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JP4233656B2 - Automatic anastomosis instrument and guide balloon attachable to the anastomosis instrument - Google Patents

Automatic anastomosis instrument and guide balloon attachable to the anastomosis instrument Download PDF

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Publication number
JP4233656B2
JP4233656B2 JP35340598A JP35340598A JP4233656B2 JP 4233656 B2 JP4233656 B2 JP 4233656B2 JP 35340598 A JP35340598 A JP 35340598A JP 35340598 A JP35340598 A JP 35340598A JP 4233656 B2 JP4233656 B2 JP 4233656B2
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Prior art keywords
balloon
distal end
anvil
trocar
anastomosis
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JP35340598A
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Japanese (ja)
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JP2000166932A (en
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明男 田村
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Johnson and Johnson KK
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Johnson and Johnson KK
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Description

【0001】
【発明の属する技術分野】
本発明は、ステープルを用いて生体の組織又は器官を吻合するための自動吻合器及び該自動吻合器に装着可能な案内バルーンに関する。
【0002】
【従来の技術】
従来、消化管に対する外科手術においては、端端吻合、端側吻合及び側側吻合という手法が用いられている。端端吻合の例としては、胃がん等の発症のため、胃を全部摘出した場合に、食道の端部と空腸の端部とをそれぞれ半径方向内方に折り曲げた状態で当該管状の器官の周方向に沿ってステープルにより縫合し、その縫合部分の中央部を円形のメスで切除することにより両者を吻合するというものである。
【0003】
ところが、空腸等の小腸又は大腸では、食道とは異なり、栄養血管が周方向に沿って走っており、当該栄養血管の延在方向に縫合してしまうと、血流が悪くなり、最悪、壊死状態に陥ってしまうことがあった。このため、近年では、端端吻合よりも、端側吻合が好ましいとされている。即ち、端側吻合は、上述の例で言えば、空腸の端部に近い壁部に開口部を形成し、この開口部と食道端部とを円形状に吻合するものであり、吻合部への血流阻害の影響が少ない。
【0004】
上述のような手術には、迅速かつ衛生的に吻合を行える自動吻合器が用いられている。このような自動吻合器としては、例えば、図5に示す構成(特開平5−212041号公報)のものが知られている。
【0005】
図5に示す自動吻合器50は、先端部から吻合用のステープルを突出する結紮ヘッドアセンブリー60と、この結紮ヘッドアセンブリー60に接続された長尺の支持軸アセンブリー70と、上記結紮ヘッドアセンブリー60の先端部からのステープルの吐出を制御するハンドルアセンブリー80とから概略構成されている。結紮ヘッドアセンブリー60は、生体組織を縫合するためのステープル及び生体組織を切断するための円筒形状の剪刀69を収容するステープルハウジングとしての円柱状の筐体61を含んでいる。この筐体61の先端の中心部には、後述のアンビルアセンブリー100のアンビル軸104と着脱可能に係合するトロッカーとしての套管針73が配されている。
【0006】
このような構成の自動吻合器50によれば、上記結紮ヘッドアセンブリー60の先端部を生体組織内に挿入し、吻合すべき箇所から上記套管針73を露出させ、その周辺の生体組織を套管針73の基部に結紮すると共に、この結紮された箇所に対応する他方の吻合箇所から上記アンビル軸104を露出させ、その周辺の生体組織をアンビル軸104の基部に結紮した後、上記套管針73とアンビル軸104とを係合させ、両者の距離を縮め、上記結紮ヘッドアセンブリー60の先端部と上記アンビルアセンブリー100とを接触させ、円周状にステープルで吻合し、その内部を剪刀69で切開することにより、一連の吻合手術を終了することができる。
【0007】
【発明が解決しようとする課題】
以上のように、上記の自動吻合器50を用いることにより迅速かつ衛生的に吻合手術を行うことができるようになっているが、術者が生体組織内に上記結紮ヘッドアセンブリー60の先端部を挿入する際に、上記結紮ヘッドアセンブリー60の先端部の周縁部が強く生体組織に接触することにより、当該生体組織に重大な損傷を与えるおそれがあった。このため、術者は愛護的に注意深く上記結紮ヘッドアセンブリー60を押し進めなければならず、そのうえ、生体組織の表面が体液等により滑り易くなっており、組織への挿入作業に困難を極め、作業時間が長くなり、患者の負担が増大しているなどの課題があった。
【0008】
なお、特開平9−19501号公報は、管状のシャフトと、このシャフト末端部と連通する少なくとも一部が透明な組織接触部品と、上記シャフトに取り付けられた膨張可能なバルーンとを備えた手術用解剖器具を開示し、また、意匠登録第1008181号公報は、吻合器の先端部に装着して吻合器のスムースな消化管への導入を補助する円錐状の挿入具の形態を開示する。これらの公報は、いずれも本発明の背景技術又は形態を開示しているに過ぎないものである。
【0009】
この発明は、上記のような課題を解決するためになされたもので、自動吻合器の挿入部を迅速かつ安全に生体の組織内に挿入するための案内バルーンを提供することを目的とする。
【0010】
また、この発明は、上記案内バルーンを備えた自動吻合器を提供することを目的とする。
【0011】
【課題を解決するための手段】
本発明は、長尺の挿入部を生体組織内に挿入して生体組織間の吻合を行う自動吻合器の前記挿入部の先端側に装着可能な案内バルーンであって、膨張時に変形可能なバルーン部と、該バルーン部を支持しかつ前記自動吻合器の前記挿入部の先端側に係合可能な基部とを有することを特徴とする。
【0012】
本発明は、長尺の挿入部を生体組織内に挿入して生体組織間の吻合を行う自動吻合器であって、前記挿入部の先端側に装着可能な案内バルーンを含み、該案内バルーンは、膨張時に変形可能なバルーン部と、該バルーン部を支持しかつ前記挿入部の先端側に係合可能な基部とを有することを特徴とする。
【0013】
本発明は、長尺の挿入部を生体組織内に挿入して生体組織間の吻合を行う自動吻合器であって、前記挿入部の先端側に一体に設けられた案内バルーンを含み、該案内バルーンは、膨張時に変形可能なバルーン部と、該バルーン部に接続された気体流通チューブとを有することを特徴とする。
【0014】
ここで、上記「案内バルーン」とは、従来の自動吻合器に対して着脱可能なものにあっては、自動吻合器の挿入部を生体組織内に挿入する際に膨張させた状態で円滑な挿入を担保することにより生体組織の安全性を確保するバルーン部と、このバルーン部を膨張又は収縮時において支持しかつ上記挿入部の先端側に着脱自在に固定される基部とをその基本構成とするものであり、また、自動吻合器の挿入部の先端側に一体に設けられたものにあっては、上記挿入部の先端側に直接固定された上記バルーン部と、このバルーン部を膨張又は収縮させるための気体流通チューブとをその基本構成とするものである。また、「案内バルーン」というときは、上記バルーン部が膨張している状態、あるいは膨張の前後に収縮している状態のいずれをも含むものとする。上記「挿入部の先端側」とは、自動吻合器のうち、生体組織内に直接挿入される部分の全体をいい、より具体的には後述するトロッカーである套管針、この套管針を支持する筒状の筐体における円盤状の先端面、円筒状の剪刀と上記套管針との間に形成される空間の内壁面及び底面等が含まれるものとする。
【0015】
また、上記「生体組織」とは、自動吻合器による吻合が可能な生体の組織又は器官をいい、より具体的には空腸等の小腸、大腸及び食道等の管状器官等が含まれるものとする。
【0016】
さらに、上記「一体」とは、少なくとも吻合手術中に機械的手段等を講じたとしても挿入部から案内バルーンが脱落しない程度に、上記挿入部と、案内バルーンとが吻合手術前に直接又は間接的に固定されている状態をいう。
【0017】
【発明の実施の形態】
以下、図面を参照して本発明の実施の一形態を説明する。
実施の形態1.
図1(a)及び図1(b)は、本発明の案内バルーンの実施の一形態を示す模式的な正面図であり、図1(a)は当該案内バルーンにおけるバルーン部の膨張前の状態を示し、図1(b)は当該案内バルーンにおけるバルーン部の膨張時の状態を示す。なお、図5に示した従来の自動吻合器の構成要素と同一の構成要素には同一符号を付し、その部分の説明を省略する。
【0018】
図1(a)及び図1(b)において、1は案内バルーンである。案内バルーン1は、図5に示した自動吻合器50の結紮ヘッドアセンブリー60の先端部に取り付けられた套管針73が挿入可能な円筒状の基部2と、この基部2の外表面に未使用時には折畳まれており膨張時に変形可能であり、例えば先細り形状となるバルーン部3と、このバルーン部3内に気体を供給し、あるいはバルーン部3内から気体を排気するためのチューブ4と、このチューブ4を介して上記バルーン部3内の気体の供給又は排気を行うためのポンプ5とから概略構成されている。
【0019】
上記基部2の内表面は上記套管針73の外表面形状に対して相補的に形成されており、図1(a)に示すように、案内バルーン1が生体組織内で確実に自動吻合器50に固着され、脱落等の危険を回避する等の安全性を確保する観点から、上記基部2と上記套管針73とは着脱可能に係合する構成であることが好ましい。即ち、上記套管針73の外表面に形成された凹状部73aと上記基部2の内表面2aに形成された凸状部2bとは着脱可能に係合している。本実施の形態における係合形態は、上述のように両者の形態の相補性を利用するものであってもよく、また板ばね等のように両者又は片方への付勢力を利用してもよい。さらに、生体組織中で使用されることを考慮して生体組織内の温度で変態する形状記憶合金からなる部材をも利用して両者間に他方への圧接力を発生させることにより、上記案内バルーンの脱落をさらに確実に防止することもできる。また、上記基部2の外径は上記套管針73の最大径等と同程度に設定されるのが望ましい。この点については、図2以降に示される案内バルーン1についても同様である。
【0020】
図1(b)に示すように、案内バルーン1のバルーン部3は、上述したように先細り形状とされているが、生体組織内への自動吻合器の案内、生体組織内への挿入し易さ及び生体組織への損傷防止の点で円錐形状であることが好ましい。特に、縦断面形状が略正三角形であることが好ましい。このため、上記套管針73の高さは、自動吻合器50の結紮ヘッドアセンブリー60の先端部における直径を一辺の長さとする正三角形の頂点となるようにハンドルアセンブリー80等を操作して上記套管針73を前進又は後退させることにより適宜調整される。また、膨張時における上記バルーン部3の最大径は上記結紮ヘッドアセンブリー60の先端部の最大径と同一又は若干当該最大径よりも大きくなるように設定される。即ち、両者の最大径の差Lは0(mm)≦L≦Max(mm)とされる。特に、Lは0mmであることが好ましい。これは、上記バルーン部3の外表面と上記結紮ヘッドアセンブリー60の外表面とが面一となり、生体組織への挿入時における摩擦等を抑制でき、円滑な案内が可能となるからである。また、Maxは正の値であり、その上限は上記結紮ヘッドアセンブリー60の先端部が挿入される生体組織の拡張時の許容寸法等をも考慮して決められる。即ち、上記バルーン部3を無理に押し込むと、生体組織が過度に拡張し、生体組織の拡張時の許容寸法を超えた場合には、拡張した生体組織に亀裂が入り、好ましくないためである。
【0021】
また、バルーン部3の上記套管針73への装着位置は、バルーン部3の形状、寸法等、上記套管針73の先端部の露出度も適宜判断して決められる。
【0022】
さらに、バルーン部3の膨張時における断面形状は、上記套管針73から上記結紮ヘッドアセンブリー60の半径方向外方への断面形状が真円形、楕円形等の、いわゆるドーナツ状であってもよい。即ち、上述のように正三角形の断面形状が最も好適であるが、本発明はこれに限定されることなく、案内側の先端形状が先細り形状でなく、偏平形状であってもよい。
【0023】
なお、図1(a)に示すように、自動吻合器50の上記套管針73の下部には、アンビルアセンブリー100のアンビル軸104と係合するための凹部73bが形成されている。この凹部73bの形成位置は、上記套管針73に装着された上記案内バルーン1の基部2の下縁部よりもさらに下側とされる。これは、上記案内バルーン1の使用後であっても、上記アンビル軸104の上記套管針73への固着を確実なものとするためである。
【0024】
実施の形態2.
図2(a)〜図2(c)は、本発明の自動吻合器の実施の一形態を示す模式的な正面図であり、図2(a)は先の実施の形態に係る案内バルーンを図5に示した従来の自動吻合器に装着する前の状態を示し、図2(b)は装着後の状態を示し、図2(c)はバルーン部の膨張状態を示し、図2(d)は図2(c)に示した膨張したバルーン部等を上方から視た平面図である。また、図2(e)は図2(c)に示した案内バルーンを備えた自動吻合器を生体組織内に挿入する状態を模式的に示す一部を切り欠いた部分断面図である。なお、図5に示した従来の自動吻合器の構成要素と同一の構成要素には同一符号を付し、その部分の説明を省略する。
【0025】
まず、図2(a)〜図2(e)において、バルーン部3の構成材料としてはヒトの生体組織に対して拒絶反応を示さず、抗穴開け性を有し、膨張時に可撓性、柔軟性、減摩性等を発揮するシリコーンエラストマーであることが好ましい。さらに、バルーン部3の表面に種々の潤滑剤を塗布して減摩性を向上させてもよい。この点はチューブ4の構成材料においても同様である。
【0026】
ポンプ5は、気体の供給又は排気を切り替えることができるタイプのものが好ましい。ここで、気体としては、手術中に漏れても生体組織に影響を与えない空気が好ましい。なお、バルーン部3の先細り形状を維持するために収容されるのは気体であることが好ましいが、生体組織に悪影響を及ぼさなければ、気体以外のバルーン部3の内容物として、衝撃吸収性、柔軟性、粘性等を有する生理食塩水などの液体、固溶体又は固体であってもよい。
【0027】
なお、本実施の形態では、上記バルーン部3内を先細り形状の単一部屋として構成したが、本発明はこれに限定されることなく、上記バルーン部3を複数の部屋に分割した構成であってもよい。なお、上記「複数の部屋に分割した構成」には、バルーン部3を複数の部屋を有する1つのバルーンで構成する場合の他、バルーン部3を複数個のバルーンで構成する場合も含まれるものとする。バルーン部3を複数個のバルーンで構成する場合には、例えば套管針73の先端側からその後端側にかけて膨張時における最大径が漸次大きくなるように複数個のバルーンを配列することにより、複数個のバルーンを膨張させたときに全体として先細り形状とすることができる。このように複数の部屋に分割することにより、生体組織への挿入時に先端部の部屋が押し潰されても、それよりも後方の部屋は先端部の部屋ほど潰れず、むしろ上記バルーン部3の半径方向外方にはみ出す結果、生体組織に対して上記結紮ヘッドアセンブリー60の先端部の周縁部を覆うことができ、生体組織への損傷を防止することが可能となる。
【0028】
さらに、複数の部屋のうち、隣接する部屋同士を隔壁を介して接触させ、壁部に先端部の部屋から後方の部屋への気体の移動のみを許す弁を設ける構成とすることも可能である。即ち、生体組織への挿入時に先端部の部屋が押し潰された際に、先端部の部屋内の気体が弁により後方の部屋に移動するため、後方の部屋の内圧が高まり、後方の部屋の形状が維持され、上記結紮ヘッドアセンブリー60の先端部の周縁部が生体組織に対して露出するのを防止することができる。
【0029】
上述のような構成を有する案内バルーン1が、自動吻合器50の上記結紮ヘッドアセンブリー60の先端部に取り付けられて生体組織内への案内等を行った後において、上記結紮ヘッドアセンブリー60の先端部が吻合すべき生体組織間に配され、套管針73が生体組織を突き破る際には、案内バルーン1は不要である。従って、このように従来の自動吻合器50に着脱可能に装着され得る案内バルーン1は前述した端側吻合及び側側吻合よりは、生体組織を突き破る必要のない端端吻合に適している。端端吻合では、上記結紮ヘッドアセンブリー60の先端部が腸管等の生体組織の端部に到達した時点で、案内バルーン1を取り外せばよい。
【0030】
なお、上記実施の形態では、バルーン部3が基部2の外表面に折畳まれていたが、基部2内に収容される構成であってもよい。
また、上記実施の形態では、バルーン部3に接続されるチューブ4及びポンプ5を基本的な構成要素として説明したが、装着前に既にバルーン部3内に気体が充填されており、バルーン部3の先細り形状を維持できる場合には、上記チューブ等を設ける必要はない。
【0031】
本実施の形態によれば、例えば図2(e)に示すように案内バルーン1を取り付けた自動吻合器1を、生体組織としての腸管C内に押し込む際に、腸管Cの内壁面に損傷を与えることなく、円滑にかつ容易に自動吻合器50を生体組織中に挿入することができる。特に、案内バルーン1のバルーン部3の外表面と自動吻合器1の上記結紮ヘッドアセンブリー60の外表面とが略面一であるので、生体組織の受ける負荷を抑制することができる。
【0032】
なお、本実施の形態では、バルーン部3を構成する材料として押圧等を受けても外径を維持できるシリコーンエラストマーを用いている。しかし、その押圧力の程度により、バルーン部3の外径が上記結紮ヘッドアセンブリー60の先端周縁部の外側より若干小さく減少する場合に、上記結紮ヘッドアセンブリー60の先端周縁部が生体組織に対して若干露出しても、変形したバルーン部3により生体組織は上記結紮ヘッドアセンブリー60の先端部の周縁部に対して曲線的に接触することが可能となり、生体組織が保護され得る。
【0033】
実施の形態3.
図3(a)〜図3(c)は本発明の自動吻合器の実施の一形態の要部を示す断面図である。
本実施の形態の特徴は、図5に示した従来の自動吻合器の結紮ヘッドアセンブリー60の先端部に図2(a)〜図2(c)に示した案内バルーン1を一体に取り付けた点に止まらない改良を含む点にある。
【0034】
本実施の形態における改良は、バルーン部3の専用の基部を排しバルーン部3を套管針73の下部に直接固定すると共に、折畳まれたバルーン部3を套管針73と円筒状の剪刀69との間のドーナツ状の空間底部に固定し、バルーン部3の気体の供給・排気を行うチューブ4を筐体61及び綴針駆出装置62内に貫通させている点にある。図3(b)に示すように、チューブ4を介してポンプ5から気体をバルーン部3内に供給することにより、バルーン部3を先細り形状に膨張させることができる。逆に、図3(c)に示すように、ポンプ5によりバルーン部3から気体を排気することにより、上述のドーナツ状の空間底部に縮ませた状態のバルーン部3を収容することができる。
【0035】
本実施の形態では、ドーナツ状の空間内にバルーン部3が収納可能であることから、上記結紮ヘッドアセンブリー60の先端部が腸管等の生体組織の患部に到達した時点で、バルーン部3を上記ドーナツ状の空間内に収納した後、套管針73で当該患部である生体組織の側壁部を突き破り、端側吻合あるいは側側吻合を行っても、バルーン部3が剪刀69に挟まれることがなく、生体組織の吻合を確実に行うことができる。
【0036】
実施の形態4.
図4(a)〜図4(c)は本発明の自動吻合器の他の実施の形態における要部を示す断面図であり、図4(d)は本実施の形態の全体の構成を模式的に示す概略正面図である。
【0037】
本実施の形態は、前記実施の形態3と同様に自動吻合器50に案内バルーン1を一体に設けており、その特徴は、自動吻合器50内に案内バルーン1のチューブ4を通した点にある。即ち、図4(a)〜図4(d)に示すように、チューブ4の一端を上記套管針73内からバルーン部3に接続すると共に、その他端はそのまま上記套管針73内から支持軸アセンブリー70及び綴針作動レバー86の後端部に形成されたリム(不図示)を経て、外部のポンプ5に接続されている。従って、吻合手術中に生体組織に直接チューブ4が接触することがないため、チューブ4を構成する材料の自由度が増大する。
【0038】
また、本実施の形態では、図4(a)に示すように自動吻合器50の上記套管針73が凹凸部分の少ない外形を有しており、上記套管針73の外表面に折畳まれた袋状のバルーン部3が設けられている。このバルーン部3には、ポンプ5から上述したチューブ4を介して所望の気体等が供給され、必要に応じて使用終了時にバルーン部3から上記気体等を強制的に排除することができる。
【0039】
なお、本実施の形態では、吻合に際し、上記結紮ヘッドアセンブリー60の套管針73の先端部を上記アンビルアセンブリー100のアンビル軸104内に挿入し、係合させることが可能であるが、アンビル軸104により基部2の外表面に折畳まれたバルーン部3を保護するようにしてもよい。即ち、アンビル軸104の内径を折畳まれたバルーン部3を覆うことのできる程度に大きく設定し、かつ、剪刀69の内径よりも小さく設定すると共に、アンビル軸104の先端内表面と基部2の下部外表面とを係合させる構成とする。例えば、図4(a)に示すように基部2の係合位置は、剪刀69内であることが望ましい。即ち、アンビル軸104の先端が剪刀69内に入り込む構成とすることにより、アンビル軸104により覆われたバルーン部3の剪刀69との接触を避けることができるからである。従って、このような構成によれば、吻合の際にステープルや剪刀69がバルーン部3に接触し挟まれることがないことから、吻合箇所からのリーク等を確実に防止することができる。
【0040】
なお、本実施の形態では、案内終了後に、ポンプ5によりバルーン部3内の気体等を強制的に排除することにより、バルーン部3を基部2としての套管針73の外表面に吸着させて省スペースを図ると共に、套管針73にアンビル軸104を固着する際に障害とならないようにするためである。
【0041】
次に、図5〜図47を参照して本発明の自動吻合器の要部以外の構成及び使用方法等を説明する。なお、以下の図面においては、前記実施の形態1における案内バルーンの装着が可能な自動吻合器の構成を便宜的に示すこととする。
【0042】
図5を参照すると、全体を50で示してある本発明の自動吻合器(以下、手術用輪状吻合部補綴装置又は単に補綴装置ともいう)の実施例が図示してある。これは、長手方向に彎曲した支持軸アセンブリー70によって近心側アクチュエータ・ハンドルアセンブリー80に接続された遠心側結紮ヘッドアセンブリー60を含む。補綴装置50はアンビルアセンブリー100を含み、これは結紮ヘッドアセンブリー60に対して長手方向に摺動自在なように成してある。回転可能な調節ノブ82は結紮ヘッドアセンブリー60とアンビルアセンブリー100間の間隔を調節するためにアクチュエータ・ハンドルアセンブリー80の近心端に提供される。移動可能な指示器84はハンドルアセンブリー80の上部にある窓85を通して目視可能で、調節ノブ82の回転により選択した綴針の高さを示す。図19に示したように、指示器84はアンビルギャップが補綴装置50の所望する動作範囲内にあることを示す目盛87に沿って移動できる。指示器84の位置はまた選択した綴針の高さが大きいかまたは小さいかを示す。
【0043】
綴針作動レバー86はアンビルアセンブリー100が閉止しているときに所望する綴針の高さを提供するように、結紮ヘッドアセンブリー60から手術用綴針を駆出するためアクチュエータ・ハンドルアセンブリー80上に軸回転可能なように装着される。軸回転するラッチ部材88は綴針作動レバー86を移動しないように係止するためハンドルアセンブリー80上に装着され、アンビルギャップが所定範囲外になるとき結紮ヘッドアセンブリー60の差動を防止する。
【0044】
図6および図20を参照すると、結紮ヘッドアセンブリー60は筒状の筐体61を含み、これはアクチュエータ・ハンドルアセンブリー80の捜査によって前進また後退することができる綴針駆出装置62を摺動自在に受容する。綴針駆出装置62は筐体61の遠心端に装着された持針器68から複数の綴針90を係合および駆出するための複数のフィンガ63を含む。持針器68は綴針90が挿入される複数の綴針受入スロット65を含む。また、綴針駆出装置62は、綴針駆出装置62と共に前進および後退される輪状のナイフまたは剪刀69を支持する。
【0045】
結紮ヘッドアセンブリー60は中空の筒状接栓64を筐体61の近心端に含み、これが支持軸アセンブリー70の遠心端を受容する。受接管またはスリーブ72は筒状接栓64と支持軸アセンブリー70の遠心端の間の接続部に被さる。受接管72は例えば電磁的変形行程によって半径方向に内側へ向かって圧縮または収縮され、筒状接栓64を支持軸アセンブリー70の遠心端に緊密に接合する。同様に、支持軸アセンブリー70の近心端はアクチュエータ・ハンドルアセンブリー80の遠心端にある筒状の延長部分74によって受け入れられる。受接管またはスリーブ76は支持軸アセンブリー70の近心端と筒状の延長部分74の遠心端の間の接合部に被さる。受接管76は例えば磁気変形行程などにより半径方向に内側へ向かって圧縮または収縮され、支持軸アセンブリー70をアクチュエータ・ハンドルアセンブリー80に緊密に接合する。
【0046】
図6および図35を参照すると、アンビルアセンブリー100は結紮ヘッドアセンブリー60によって摺動自在に支持された套管針73に着脱可能に固定されている中空の軸状に延出するアンビル軸104上に装置された一般に輪状のアンビル102を含む。套管針73は筐体61の遠心端に装置された持針器68に対して長手方向に動作するように筒状の筐体61上に形成された中央部の支持管66(図6)内に摺動自在に受け入れられる。持針器68内の綴針受入スロット65は手術用綴針90を受容するために輪状の列に配置される。綴針受入スロット65はわずかな間隔を開けて同心円上の環状の列に配置するのが望ましい。アンビル102はアンビル102に対して駆出された際に綴針90を形成するための複数の綴針形成グルーブ108(図44)を有する環状のリム106を含む。
【0047】
アンビルアセンブリー100は套管針73がアンビル軸104に挿入されるときに套管針チップ75を係合するためアンビル軸104に沿って長手方向に延在する一対の長いスプリング状の保持クリップ110を含む。図36に示したように、保持クリップ110はアンビル軸104を通って長手方向に延出し、アンビル軸104の対向する側面に沿って配置された長手方向のスロット114に受け入れられる外側に向かって広がった部分112を含む。各保持クリップ110の外側に向かって広がった部分112は半径方向に内側に向かって折り曲げられこれらの間に套管針チップ75を取り込むための爪116を提供する。長いスロット114によって保持クリップ110の広がった部分112は套管針チップ75がアンビル軸104内に挿入されて爪116の間に前進させられた場合に半径方向に外側へ撓むことができる。
【0048】
套管針73をアンビル軸104内部へ挿入するのを容易にするため、套管針チップ75は減力プロファイルを有する。套管針チップ75は浅い角度の楔状を成して保持クリップ110を押し広げるために必要な力を減少するのが望ましい。例えば、套管針チップ75は套管針軸に対して30度またはそれ以下の楔形をした台形の形状で製作され、保持クリップ110の間へ套管針73を挿入するのを容易にしている。好適実施例において、套管針チップ75は、遠心端で30度の角度で楔形にした台形の尖頭部77と、套管針73がアンビル軸104に挿入される際に保持クリップ110を押し広げるため9度の角度で楔状にした隣接する台形の表面79を有する。
【0049】
補綴装置50を開放位置にすると(図6)、保持クリップ110によりアンビルアセンブリー100(図35)はアンビルアセンブリー100上でそれぞれ押し込むまたは引き出すことにより套管針73と着脱できるように成してある。補綴装置を閉止位置にすると(図8)、套管針73は中央部の支持管66内部へ牽引され、これが保持クリップ110の半径方向の移動を制限して、爪116が套管針チップ75に対する位置に留まるようにする。その結果、アンビルアセンブリー100は套管針73と係止され、套管針チップ75から保持クリップ110を係合解除することなく補綴装置の最大射出力にアンビル102が抵抗できるようになる。
【0050】
図38に示したように、各保持クリップ110はアンビル軸104の遠心端にある鍔121およびアンビル102に張力を与えるため一つ以上の横方向の張り出しまたは肩120を提供する広がった尖頭118を遠心端に含む。アンビル軸104上の一対の内面122(図39)は保持クリップ110の対向する端と係合する。内面122は、アンビル軸104の対向する側面上にある長いスロット114と保持クリップ110の外側に広がった部分112を位置合わせするため、アンビル軸104内部の鍵の通り道123(図40)の位置を規定する。
【0051】
図36を参照すると、套管針73は遠心端で套管針チップ75を支持する直径の減少した長い部分134で終る第1の円錐形に先細りの部分132を有する長い円筒状の本体130を含む。第2の円錐形に先細りの部分は直径の減少した円筒状の首138で終り、ここで套管針チップ75の後ろの外向きに広がった肩部分140の位置が決まる。肩部分140は套管針チップ75が保持クリップ110の間に挿入された際に爪116によって係合される。
【0052】
図37に示したように、円筒状の套管針本体130は第1の円錐形に先細りの部分132に隣接する位置で内側にオフセットしており、套管針73の周辺部の縁142を提供する。縁142は套管針73が中空のアンビル軸104内へ挿入される際にスリーブ105の端部と係合する。スリーブ105は套管針本体130の円錐状に角度のついた部分先細りの132を受容するため内側に角度のついた部分124を有する。スリーブ105の近心端で外側に面取りした部分126は套管針本体130の周辺部の縁142と係合するための周辺部の薄い縁128を提供する。面取りした部分126および144は結紮ヘッドアセンブリー60に套管針73が牽引されるに従い套管針本体130とスリーブ105の間の接合部上に組織が移行するのを容易にする。スリーブ105の周辺の薄い縁128は周辺部の縁142よりわずかに小さい直径を有して、套管針73からアンビル軸104への組織の移行を容易にするようになすのが望ましい。
【0053】
図39を参照すると、アンビル軸104は例えばステンレススチールなどの金属製の中空スリーブ105と、プラスチック製で金属製スリーブ105の外部表面に固定される薄い中空の円筒状カバー150よりなる複合構造を有する。円筒状のカバー150はアンビル軸104とカバー150の残りの部分よりわずかに直径が大きく、広がった周辺部分152を有する。広がった周辺部分152は套管針73とアンビル軸104が結紮ヘッドアセンブリー60内部に牽引された際に支持管66(図8)の遠心端へ緊密に嵌合するように寸法が決められている。周辺部分152の目的はアンビル102と持針器68の正確な軸合わせを提供することである。
【0054】
複数の外部周辺上に配置された螺旋線条(以下、外部線条とよぶ)154(図38)は広がった周辺部分152から円筒状カバー150の近心端に向かい長手方向に延在する。複数の内部周辺部に配置された螺旋線条(以下、内部線条とよぶ)156(図34)は支持管66の内部に形成される。アンビル軸104が支持管66内部に牽引されると、外部線条154は内部線条156の間に受け入れられてアンビル102と持針器68の正確な周辺部位置合わせを提供する。軸と周辺部の正確な位置合わせの結果、アンビル102の綴針形成グルーブ108は綴針受入スロット持針器68内の綴針受入スロット65と精密に位置合わせされる。
【0055】
広がった周辺部分152の別の目的は筒状組織の巾着縫合に便利なようにアンビル軸104上の周辺部の刻み目158を位置決めすることである。図6に示したように、組織が広がった周辺部分152を遠心方向に越えた位置にある周辺部の刻み目158でアンビル軸104へ巾着縫合された場合、巾着縫合した組織は広がった周辺部分152を越えて簡単に滑り出すことはない。その結果、巾着縫合された組織は広がった周辺部を越えてアンビル軸104の遠心領域に制限され、アンビル軸104は巾着縫合された組織を通って逆に滑ることはない。
【0056】
図34に示したように、内部線条156は支持管66の遠心端からはなれて近心方向に間隔が開けてあることが望ましい。内部線条156のこの配置で、アンビル軸104が牽引されるに従い、巾着縫合した組織が外部線条154と内部線条156の間に挟まれる傾向を減少し、また組織が支持管66内部へ引き込まれるのを防止している。また図6に示したように、支持管66の遠心端は、組織が筐体61の中空の内部へ引き込まれるのを防止するために、アンビル軸104が牽引されるに従い外部線条154の上に組織を押し出すための持針器68に隣接して配置された平坦な環状の縁67を有している。中央部の支持管66はアンビル軸104が結紮ヘッドアセンブリー60内へ牽引されるように視認性の増大を提供している。
【0057】
図38および図44を参照すると、アンビルアセンブリー100は巾着縫合された組織が切除される組織切断面を提供するためにアンビル102内に装置された裏打ちワッシャ160を含む。裏打ちワッシャ160は構造が環状で、アンビル102の環状リム106内部に同心状に装着される。環状のグルーブ162(図44)はこれの遠心端から内向きにワッシャ160内部へ延出し、これの近心端手前で終っている。グルーブ162によって、ワッシャ160は、薄い桁腹168によってワッシャ160の近心端で接合された外側の環状の壁164および内側の環状の壁166を含む。桁腹168は巾着縫合された組織が円形のナイフ69によって切除される裏打ち表面を提供する。環状の鍔165は内側の環状の壁166の遠心端から半径方向に内側に向かって延出し、アンビル102上にもたれてワッシャ160の内側壁166を補強する。
【0058】
図38および図41に示したように、裏打ちワッシャ160は外側の環状の壁164の遠心端で半径方向に外向きに突出した複数の爪170を含む。例えば、3つの爪170がワッシャ160の周辺部で均一の間隔が空いている。環状の凹部またはグルーブ172(図19および図20)はワッシャ160上の爪170を受容するためアンビルリム106の内側で遠心方向に形成される。爪170は環状の凹部172内に引っかけ式に嵌合してアンビル102へワッシャ160を固定する。爪170と環状の凹部172は出荷または保管中にアンビル102からワッシャ160が偶然に外れるのを防止するように摩擦力による嵌合を提供する。
【0059】
裏打ちワッシャ160はこれの外側の環状の壁164に形成された第1の一対の半円形の切り欠き部分173(図41)を含み、これは内側の環状の壁166に形成された第2の一対の半円形の切り欠き部分174と位置が揃うように成してある。切り欠き部分173および174はワッシャ160の直径方向に対向した位置に配置してあり、アンビル102の一対の穴176と位置が揃う。切り欠き部分173および174は先端178(図38)をアンビル102に取り付けるために用いる一対の固定ピン177の形成された端部を受容するために充分な隙間を提供する。
【0060】
図11を参照すると、支持軸アセンブリー70はアクチュエータ・ハンドルアセンブリー80から必要な圧縮力と動きを伝達して結紮ヘッドアセンブリー60内の綴針駆出装置62を作動させるための圧縮部材92を含む。また、支持軸アセンブリー70は、アクチュエータ・ハンドルアセンブリー80からアンビルアセンブリー100へ必要な張力を伝達してアンビルアセンブリー100にかかる圧縮力に対向するための一対の長い可撓性張力ベルト95および96からなる張力部材94を含む。可撓性張力ベルト95および96はアクチュエータ・ハンドルアセンブリー80からの動きを伝達してアンビルアセンブリー100が結紮ヘッドアセンブリー60に相対する位置に調節されうるように成す。長い可撓性スペーサーベルト98が支持軸アセンブリー70と可撓性張力ベルト95および96の間の空間内に含まれる。
【0061】
図24を参照すると、圧縮部材92は、プラスチック材料から製作されるのが望ましく、遠心端の真っ直ぐなスリーブ204まで続く中央の彎曲した部分202を併合する真っ直ぐな近心部分200を含む長い部材からなる。全長にわたって曲率が実質的に均一な支持軸アセンブリー70と対称的に、圧縮部材92の中央部の彎曲した部分202は真っ直ぐな近心部分200と遠心端の真っ直ぐなスリーブ204の間の部分で変化する曲率半径を有する。圧縮部材92は中空で筒状の支持軸アセンブリー70に相対する曲率の可撓性材料、例えば、カーボンファイバーまたはグラスファイバー充填プラスチック材料からなる。
【0062】
図24および図25に示すように、近心側延在部206は圧縮部材92のオフセット208によって決まる。近心側延在部206には外向きに延出するピン210が提供されて圧縮部材92とアクチュエータ・ハンドルアセンブリー80の接続を容易に成している。長いグルーブ212は近心側延在部206から真っ直ぐな近心部分200に沿って長手方向に延出し、圧縮部材92の中間の彎曲した部分202の手前で終っている。図26に示したように、中間の彎曲した部分202は彎曲した部分202の実質的に全長に沿って長手方向に延在する直立した案内面またはランプ214を提供した充実して筒状ではない断面を有する。ランプ214は彎曲した支持軸アセンブリー70に含まれる張力部材94の可撓性張力ベルト95および96に係合し支持するために、圧縮部材92の上に一体の案内表面を提供する。
【0063】
図24および図30を参照すると、圧縮部材92の遠心端のスリーブ204は綴針駆出装置62を確実に締め付けるのに適しており、圧縮部材92が持針器に相対して綴針駆出装置62を前進また後退させることができる。スリーブ204はスリーブ204の遠心端に形成された鍔222を越えて延在する延出部220を含む(図28)。遠心側延在部220には周囲の方向に等しい間隔で離して配置した4つの半径方向に突出する突起224の第1の組が提供される。また遠心側延在部220は周囲の方向に等しい間隔で離して配置した4つの半径方向に突出し、半径方向に突出する突起224の第1の組より間隔が広い突起226の第2の組を有する。図27に示したように、第1の組の突起224は鍔222と実質的に同じ距離で半径方向に外向きに延在している。第2の組の突起226は突起224と比較すると寸法が小さく、また突起226は突起224より短い距離で半径方向に外向きに延出している。遠心側延在部220は内側で面取りした表面228(図28)を有することでアンビルアセンブリー100が牽引されるにしたがってスリーブ204内部への套管針73の移動を容易にすることが望ましい。
【0064】
図30を参照すると、綴針駆出装置62は長手方向のスロット232によって分離された一組の近心側に延出する4つの長い位置決めフィンガ230を含む。図31に示したように、スロット232は90度の間隔で綴針駆出装置62上の円周方向に配置されている。また図32に示すように、それぞれの位置決めフィンガ230は位置決めフィンガ230の近心端に隣接して内側に面取りした表面236が提供された内側に突出する爪234を含む。綴針駆出装置62が圧縮部材92のスリーブ204へ装着される際、位置決めフィンガ230は一時的に離れるように撓んで爪234が突起226の上を移動するのを容易にしている。爪234は突起226と鍔222の間の位置で引掛かり、綴針駆出装置62をスリーブ204に固定する。鍔222は圧縮部材92からの圧縮力を伝達して綴針駆出装置62を前進させる。突起226と爪234によって綴針駆出装置62は圧縮部材92に牽引されることができる。
【0065】
図21を参照すると、張力部材94は一対の可撓性張力ベルト95および96を含み、これらは引っ張り強度を維持しつつ張力部材94の可撓性を増加させる。可撓性張力ベルト95および96の狭い遠心端は一組のピン240によって套管針73へ接続される。可撓性張力ベルト95および96の狭い近心端はピン242によってアクチュエータ・ハンドルアセンブリー80内に含まれる制御棒300へ接続される。可撓性張力ベルト95および96はそれぞれ長い中央部分245および246を含み、これらは可撓性張力ベルト95および96の狭い近心側および遠心側の端部より実質的に広い。圧縮部材92は実質的のその全長に沿って開放した非筒状の構造を有しているため、張力部材94は圧縮部材92内部に配置されたり、またはこれによって包囲されることはない。その結果、可撓性張力ベルト95および96の長い中間部分245および246は支持軸アセンブリー70の内径と実質的に同一の幅をなす。この広がった幅は、アクチュエータ・ハンドルアセンブリー80からアンビルアセンブリー100へ張力部材94を介して張力が伝達される際に可撓性張力ベルト95および96が伸縮する傾向を最小限に抑えている。
【0066】
図11および図22に示したように、可撓性スペーサーベルト98は長い可撓性ストリップ250を含み、このストリップはこれに直交して突出し、支持軸アセンブリー70の内面に係合する長手方向の羽根252の列を含む。可撓性スペーサーベルト98の上部には、一対の長い突出部254が可撓性ストリップ250の対向する端に沿って延在する。突出部254は可撓性張力ベルト96の中央部分246と係合して可撓性張力ベルト96および可撓性スペーサーベルト98の間の摺動摩擦を減少させる。アクチュエータ・ハンドルアセンブリー80に含まれる制御棒300を受容するために、長いグルーブ256が可撓性スペーサーベルト98の近心端に形成される。
【0067】
図23を参照すると、アクチュエータ・ハンドルアセンブリー80は一対の長いハンドル部分81を含み、これらが一緒に嵌合して一般に円筒状のハンドルを形成する。ハンドル部分81のそれぞれは綴針作動レバー86が軸回転するように装置される従属中子83が含まれる。制御棒300はアクチュエータ・ハンドルアセンブリー80に沿って長手方向に動くようにハンドル部分の間に含まれる。調節ノブ82はハンドル部分81の近心端によって回転可能なように支持され、また制御棒300の近心端で長い螺子を切ってある軸302と螺子で係合する。螺子の切ってある軸302は内側に螺子の切ってあるスリーブ304と調節ノブ82の遠心端で螺子によって接続する。螺子切りスリーブ304は各ハンドル部81に形成された環状の壁305に回転可能に受け入れられる。円筒状の蓋89は中空の調節ノブ82の近心端内部に固定される。制御棒300の遠心端は圧縮部材92の近心部分200にある長いグルーブ212に摺動自在に受け入れられる。制御棒300はその遠心端で張力部材94へピン242により接続されている。
【0068】
図23に示したように、U字形クリップ306と螺子308は制御棒300がこれの軸の周囲を回転するのを防止している。U字形クリップ306は螺子308を受容するための長いスロット310(図12)をこれの対向する側面それぞれに含む。後述する指示器および安全解除機構の較正を目的として、スロット310はU字形クリップ306が制御棒300の長手方向で位置を調節できるように成している。
【0069】
図5に見られるように調節ノブ82を反時計回りの方向に回転させることによって、制御棒300が前進し、張力部材を遠心方向に移動させ、アンビルアセンブリー100と結紮ヘッドアセンブリー60の間のギャップが開く。ハンドル部分81の一つにある段307(図12)が螺子308と係合して制御棒300の遠心方向への移動を制限する。調節ノブ82を対向する方向すなわち時計回りに回転することにより、制御棒300が後退し、張力部材を近心方向に移動させ、アンビルアセンブリー100と結紮ヘッドアセンブリー60の間のギャップが閉じる。蓋89の段309が制御棒300の近心方向への移動を制限する。
【0070】
アクチュエータ・ハンドルアセンブリー80はハンドル部分81のそれぞれに摺動自在に支持されている安全解除ブラケット312を含む。安全解除ブラケット312は制御棒300の螺子軸302の下側でハンドル部分81のそれぞれに形成された一対の長手方向の梁315および316の間に摺動自在に受け入れられる長い方形の板314を含む。螺子軸302は方形の板314の近心端に形成された直立する鍔318を通って延在する。コイルスプリング320はそれぞれのハンドル部分81の鍔318と環状の壁305の間におかれ、通常は梁315に向かって遠心方向に鍔318を押し付けている。安全解除ブラケット312の遠心端は遠心方向に突出する腕322となり、上向きに傾斜して横方向に突出するフィンガ324で終り、指示器84の動きを制御している。
【0071】
図12に示したように、指示器84はハンドル部分81に形成された回転軸ピン328(一つだけ示してある)の対に軸回転するように装着された支持器レバー326の上部に位置している。腕322は指示器レバー326に沿って遠心方向に延在し、フィンガ324は指示器レバー326の遠心側に位置する。コイルスプリング320(図23)は指示器レバー326を遠心方向に押して指示器84が窓85の遠心側位置にくるように提供されている(図19)。
【0072】
図6および図12において、補綴装置50はアンビルアセンブリー100を完全に開放しまたアクチュエータ・ハンドルアセンブリー80を完全に前進させた状態で図示してある。アンビルアセンブリー100を完全に開放すると、安全解除ブラケット312はコイルスプリング320によって遠心側に押し付けられ、直立した鍔318を梁に向かって推進し、フィンガ324が遠心方向に前進し、また指示器レバー326から係合解除される。制御棒300が後退すると、図13に示したように、制御棒300上のクリップ306が近心方向に動いて鍔318を係合し、また安全解除ブラケット312を近心方向に動かす。最初にアンビルアセンブリー100が締まり始めるとき、安全解除ブラケット312上のフィンガ324は指示器レバー326からまだ係合解除されている(図17)。アンビルアセンブリー100と結紮ヘッドアセンブリー60間のギャップが装置の所定範囲内に調節されると、フィンガ324は図18に示すように指示器レバー326と係合して軸回転し、指示器84を窓85の目盛87に沿って近心方向に動かし、補綴装置50が射出する際に作られる綴針の選択した高さの指示を提供する。
【0073】
安全ラッチ部材88は安全解除ブラケット312の下側でハンドル部分81の間に延在する軸回転ピン330によって軸回転するように装置される。安全ラッチ部材88は、ラッチの掛かった位置(図12)で安全解除ブラケット312の下側で水平に配置される桟332を含む。アンビルギャップが外側すなわち補綴装置50の所定範囲以上の場合、安全解除ブラケット312の方形の板314が安全ラッチ部材88の桟332に被さり、安全ラッチが綴針作動レバー86から係合解除されるのを防ぐ。また、アンビルギャップが所定範囲内の場合、安全解除ブラケット312は牽引され安全ラッチ部材88の桟332は安全解除ブラケット312の方形の板314との係合が解除される。安全ラッチ部材88はラッチの外れた位置へ軸回転して綴針作動レバー86を動作させることができるようになる(図13)。
【0074】
図23に示したように、綴針作動レバー86はプラスチック製の被覆342に被われハンドル部分81の従属中子83へ軸回転ピン344で接続され1部材を折り曲げた引金腕340を含む。引金スプリング346は軸回転ピン344に装着され、通常は綴針作動レバー86を非協働位置(図12)へ押し付けている。引金腕340はラッチ位置にある安全ラッチ部材88に係合される一対の桟348を含む。引金腕340は補綴装置50の圧縮部材92を動作させるための一対のアクチュエータ・フィンガ350も含む。引金腕340は筒状の延在部206上に嵌合し圧縮部材92の近心端でオフセット208を係合する発射クリップ352によって圧縮部材92へ結合されている。発射クリップ352は筒状の延在部206上のピン210を受容するための穴354を含む。また、発射クリップ352には引金腕340のアクチュエータフィンガ350を受容するために刻み目356がこれの対向する側面に提供される。発射クリップ352は遠心方向および近心方向双方への動きをアクチュエータフィンガ350から圧縮部材92へ伝達するために提供されている。刻み目356は負荷の下でアクチュエータフィンガ350が開大して腕355を迂回するのと、牽引時に中子358を迂回するのを防止するものである。
【0075】
図45を参照すると、着脱可能な套管針180がアンビルアセンブリー100と合わせて使用するために提供される。着脱可能な套管針180は長く一般に円筒状でその近心端に台形の形状をした套管針チップ182を有する套管針本体181を含む。一対の陥没した凹部183が円筒状の本体181の対向する側面に形成され、これが套管針180の取り扱いを容易にする。筒状の本体181は第1の円錐形で先細りになった部分184を有し、この部分は直径が減少した長い部分185へ接続し、ここが狭い円筒状の首187で終わる第2の円錐形で先細りになった部分186へ続いている。長い頭188は円筒状の首187の遠心端に提供される。頭188は套管針180の爪116が保持クリップ110の間に挿入された際に保持クリップ110の爪116と係合するための一対の近心端の肩189を含む。頭188は套管針本体181の陥没した指かけ183に対して90度の角度で周辺に配置されている一対の平坦な対向する側面190を有する。
【0076】
図46に示したように、着脱可能な套管針180を中空のアンビル軸104に挿入すると、アンビル軸104の近心端のスリーブ105が套管針180の円錐形に先細りになった部分184と係合する。平坦な側面190を縦に向けた套管針180の倍力位置では、図46に示したように、頭188は保持クリップ110の爪によって把持され、爪が肩189に係合して套管針180をアンビル軸104内部で保持する。套管針180をアンビル軸104から開放するには、套管針本体181を90度回転させて図47に示す減力位置へ向け、頭188の平坦な側面190を保持クリップ110状の爪116に合わせる。套管針180をアンビル軸104から引抜く場合に、爪116と平坦な側面190の位置が揃っていると、套管針180は、頭188の平坦な側面190を爪116と直角の方向を向けて套管針180を引抜くために要する力と比較して少ない力で保持クリップ110から係合解除することができるようになる。また減力位置に向けた場合、套管針180は少ない力で、例えば内視鏡クランプを用いて、アンビル軸104へ挿入しまた維持クリップ110と係合することができる。
【0077】
図20を参照すると、支持軸アセンブリー70は遠心端で内側に向かってオフセットがついており、筒状延在部360上の隣接する環状のグルーブ364を位置決めする直立した環状のカラー362を有する直径の小さい筒状の延在部を提供する。同様に、筐体の筒状接栓64は隣接する環状のグルーブ374によって隔てられた一つまたはそれ以上の直立した環状のカラー372を備えた近心側に延出するスリーブ370を含む。スリーブ370はわずかに直径が大きくこれの中に筒状延在部360を摺動自在に受容するように成してある。延在部360は長手方向のスロット366を有し、これは筐体61を支持軸アセンブリー70と円周方向に位置合わせするため、スリーブ370の内側に形成された長手方向の螺旋線条または鍵376を受容するための鍵の通り道を提供する。環状のカラー362および372と環状のグルーブ364および374の目的は、筒状の筐体61と支持軸アセンブリー70の間の接続点に隣接して一連の交互の突起とへこみを提供し、この上で受接管72が変形して強固で滑らないような接続を筐体61と支持軸アセンブリー70の間に提供することである。
【0078】
アクチュエータ・ハンドルアセンブリー80への支持軸アセンブリー70の接続を容易にするため、支持軸アセンブリー70の近心端は直径が小さく近心端に環状の鍔382を提供してある筒状の延在部380の位置決めするためのオフセットがついている。環状の鍔382は各ハンドル部分81の内側の環状の凹部384(図23)に受け入れられる。一対の案内棒386(図23に一つだけ図示してある)はハンドル部分81の環状の凹部384内で直径方向に対向する位置に形成してある。案内棒386はカラー382の直径方向に対向した位置に形成された一対の穴388(図20)に受け入れられる。各ハンドル部分81は半筒状のスリーブ390を遠心端に含み、これが支持軸アセンブリー70の近心端にある筒状の延在部380を受容する。受接管76(図5)は支持軸アセンブリー70とアクチュエータ・ハンドルアセンブリー80の間の接続点に被さり、半径方向に内側へ向かって変形されることによって支持軸アセンブリー70とアクチュエータ・ハンドルアセンブリー80の強固な接続を提供する。
【0079】
手術用輪状吻合部補綴装置50を用いて、2つの組織片が綴針の列によって相互に接続されるような管内吻合術を施行することができる。実施例として、組織切断面間の管腔周囲で輪状の列に配置した複数の手術用綴針を用い、一対の管腔組織の切断端を端端吻合するための術式が詳述されている。吻合術の準備として、吻合を行なう管腔組織に巾着縫合で縫合糸を通しておく。例えば、図2に示すように、二つの筒状組織の切断面52および54は、それぞれに巾着縫合糸56および58を筒状組織切断面52および54の開放端に隣接して巾着縫合の術式で通すことによって準備が整う。
【0080】
手術の術式が二重巾着縫合技術を用いて行なわれる場合、アンビルアセンブリー100を結紮ヘッドアセンブリー60に装着し、かつ完全に閉じた状態で、例えば補綴装置50を症例の肛門部開口への挿入によって第1の筒状組織切断面52内へ装置が挿入される。補綴装置50の症例への挿入前に調節ノブ82を時計方向に回転させて套管針73を支持管66内部へ牽引し、またアンビル102を持針器68に噛み込ませる。結紮ヘッドアセンブリー60は筒状組織切断面52の巾着縫合端に隣接しておかれる。次に、調節ノブ82を反時計方向に回転して、套管針73が完全に前進するまで制御棒300および張力部材92を前進させることにより、アンビルアセンブリー100をこれの完全開口位置まで移動する(図2)。套管針73が完全に前進すると、筒状組織切断面52の巾着縫合端は巾着縫合の縫合糸56を引きまた締め込むことによって円筒状の套管針本体130に向かって一緒に落ち込む。巾着縫合した組織は套管針本体130に向かって落ち込み、また巾着縫合糸56を結紮して組織を套管針本体130に固定する。
【0081】
アンビルアセンブリー100を筒状組織切断面54の巾着縫合端内部に挿入し、巾着縫合の縫合糸58を引きまた締め込むことによって組織はアンビル軸104に向かって一緒に引き込まれる。巾着縫合した組織はアンビル軸104に向かって、アンビル軸104上の周辺部に直立した部分152の遠心方向に隣接した結紮突起へ引き込み、巾着縫合糸58を一緒に締め込むことが望ましい。所望する場合はアンビルアセンブリー100を套管針73から脱着して筒状組織切断面54内へのアンビルアセンブリー100の挿入を容易にすることも可能である。筒状組織切断面54の巾着縫合端を巾着縫合糸58によってアンビル軸104に結紮した後、アンビルアセンブリー100を套管針73に再装着する。
【0082】
筒状組織切断面52および54の巾着縫合端を結紮した後、調節ノブを時計回りに回転して套管針73を支持管66に引き込み、アンビル102を持針器68に向かって移動させる。套管針73が引き込まれると、套管針本体130が組織切断面52の巾着縫合端を通して近心方向へ摺動し、巾着縫合した組織を介してアンビル軸104を支持管66内へ引き込む。面取りした部分126および144(図37)は巾着縫合組織を介して套管針本体130およびスリーブ105の間の移行部の移動を容易にする。上述したように、スリーブ105の周辺部の薄い縁128は套管針本体130の周辺の縁142より直径がわずかに小さいため、套管針73が牽引されると巾着縫合組織が面取りした部分144から面取りした部分126へ簡単に移行することができる。アンビル軸104が支持管66へ入ると、アンビル軸104上の外部線条154(図38)は支持管66の内部線条156(図34)の間に受け入れられ、また案内されて、アンビル102を持針器68と周辺部で位置合わせする。支持管66の環状の縁67が巾着縫合組織を套管針73とアンビル軸104の間の移行部へまた外部線条154へ押しつける。また、直立した周辺部分152は支持管66に緊密に受け入れられてアンビル102を持針器68と軸で位置合わせする。周辺部および軸での位置合わせの結果、アンビル102の綴針形成グルーブ108(図44)は持針器68の綴針受入スロット65(図30)と精密に位置合わせされることになる。
【0083】
アンビル102と持針器68の間のギャップが補綴装置50の動作範囲内にある所望の綴針の高さを生じるように設定されると、安全ラッチ部材88が時計方向に旋回して、図13に示してあるように、綴針作動レバー86の係合を解除する。補綴装置50は綴針作動レバー86を握りまた時計方向に回転させ、図14に示すように綴針作動レバー86をこれの動作位置へ移動させることで結紮を行なう。その結果、引金腕340のアクチュエータフィンガ350が発射クリップ352を遠心方向に駆出して圧縮部材92を支持軸アセンブリー70に沿って長手方向に前進させる。圧縮部材92は綴針駆出装置62を前進させて駆出フィンガ63を遠心方向に綴針受入スロット65へ移動させ綴針90を嵌合させる。圧縮部材92は必要な動きおよび圧縮力を引金腕340から綴針駆出装置62へ伝達して、綴針90を持針器68から組織内へ、さらにアンビル102に向かって駆出する。図10に示したように、各綴針90は組織切断面52および54を一緒に綴じ込むようにB字形に整形される。また、環状のナイフ69が綴針駆出装置によって押し出され、裏打ちワッシャ160に向かって組織を切断する。図9に示したように、環状のナイフ69は裏打ちワッシャ160を二つの環状断面に分割する。
【0084】
組織の綴じ込みおよび切断が完了した後、綴針作動レバー86はスプリング346によって非動作位置へ押される(図13)。引金腕340のアクチュエータ・フィンガ350が反時計回りに旋回して、図13に見えるように発射クリップ352と圧縮部材92を近心方向に移動させる。その結果、位置決めフィンガ230によって圧縮部材92へ接続されている綴針駆出装置62と環状のナイフ69は結紮ヘッドアセンブリー60内へ牽引される。持針器68と駆出フィンガ63の間に綴針、組織、またはその他の残渣を捕獲した場合、症例から補綴装置50を抜去する前に、綴針駆出装置62の牽引で組織から結紮ヘッドアセンブリー60を遊離させる。増力が必要とされる場合、綴針作動レバー86をこれの非動作位置へ用手的に反転して、綴針駆出装置62を牽引することができる。
【0085】
次に、アンビル102と持針器68の間で綴じ込まれた組織は調節ノブ82を反時計回りに回転させてアンビルアセンブリー100を結紮ヘッドアセンブリー60から離れるように進めることで開放される。アンビル102は綴じ込んだ組織を適切な方法で取り扱いアンビルを綴じ込んだ管腔を通して滑らせることによって管腔組織を通って移動できる。しかるのち、補綴装置50は筒状の組織切断面52および54の間で閉じた管腔を後に残して症例から除去される。
【0086】
好適な態様を以下に示す。
(I)長尺の挿入部を生体組織内に挿入して生体組織間の吻合を行う自動吻合器の前記挿入部の先端側に装着可能な案内バルーンであって、
膨張時に変形可能なバルーン部と、該バルーン部を支持し、かつ前記自動吻合器の前記挿入部の先端側に係合可能な基部とを有することを特徴とする案内バルーン。
(1)前記バルーン部には、チューブを介して気体を供給又は排気するポンプが接続されている実施態様(I)記載の案内バルーン。
(2)前記バルーン部は先細り形状を成している実施態様(I)記載の案内バルーン。
(3)前記バルーン部は円錐形状を成している上記実施態様(2)記載の案内バルーン。
(4)前記バルーン部は複数の部屋を有し、前方の部屋は後方の部屋とは独立して圧縮される実施態様(I)記載の案内バルーン。
(5)前記バルーン部のうち、前方の部屋と後方の部屋とは隔壁を介して接しており、該隔壁は前方の部屋から後方の部屋への気体の移動のみを許す弁を有している上記実施態様(4)の案内バルーン。
(II)長尺の挿入部を生体組織内に挿入して生体組織間の吻合を行う自動吻合器であって、
前記挿入部の先端側に装着可能な案内バルーンを含み、該案内バルーンは、膨張時に変形可能なバルーン部と、該バルーン部を支持し、かつ前記挿入部の先端側に係合可能な基部とを有することを特徴とする自動吻合器。
(6)前記バルーン部には、チューブを介して気体を供給又は排気するポンプが接続されている実施態様(II)記載の自動吻合器。
(7)前記バルーン部の最大径は前記挿入部の最大径よりも大きい実施態様(II)記載の自動吻合器。
(8)前記バルーン部は先細り形状を成している実施態様(II)記載の自動吻合器。
(9)前記バルーン部は円錐形状を成している実施態様(II)記載の自動吻合器。
(10)前記バルーン部は複数の部屋を有し、前方の部屋は後方の部屋とは独立して圧縮される実施態様(II)記載の自動吻合器。
(11)前記バルーン部のうち、前方の部屋と後方の部屋とは隔壁を介して接しており、該隔壁は前方の部屋から後方の部屋への気体の移動のみを許す弁を有している上記実施態様(10)の自動吻合器。
(III)長尺の挿入部を生体組織内に挿入して生体組織間の吻合を行う自動吻合器であって、
前記挿入部の先端側に一体に設けられた案内バルーンを含み、該案内バルーンは、膨張時に変形可能なバルーン部と、該バルーン部に接続された気体流通チューブとを有することを特徴とする自動吻合器。
(12)前記バルーン部には、前記気体流通チューブを介して気体を供給又は排気するポンプが接続されている実施態様(III)記載の自動吻合器。
(13)前記バルーン部の最大径は前記挿入部の最大径よりも大きい実施態様(III)記載の自動吻合器。
(14)前記バルーン部は円錐形状を成している実施態様(III)記載の自動吻合器。
(15)前記バルーン部は円錐形状を成している実施態様(III)記載の自動吻合器。
(16)前記バルーン部は複数の部屋を有し、前方の部屋は後方の部屋とは独立して圧縮される実施態様(III)記載の自動吻合器。
(17)前記バルーン部のうち、前方の部屋と後方の部屋とは隔壁を介して接しており、該隔壁は前方の部屋から後方の部屋への気体の移動のみを許す弁を有している上記実施態様(16)の自動吻合器。
【0087】
【発明の効果】
以上説明したように、本発明によれば、膨張時に変形可能なバルーン部を有する案内バルーンを自動吻合器の挿入部の先端側に装着することにより、生体組織内への自動吻合器の案内、生体組織内への挿入し易さ及び生体組織への損傷防止を図ることができる。
【図面の簡単な説明】
【図1】(a)及び(b)は、本発明の案内バルーンの実施の一形態を示す模式的な正面図であり、(a)は当該案内バルーンにおけるバルーン部の膨張前の状態を示し、(b)は当該案内バルーンにおけるバルーン部の膨張時の状態を示す。
【図2】(a)〜(c)は、本発明の案内バルーンの実施の一形態を示す模式的な正面図であり、(d)は(c)を上面から見た平面図であり、(e)は(c)に示した案内バルーンを装着した自動吻合器を生体組織内に挿入する状態を模式的に示す一部を切り欠いた部分断面図である。
【図3】(a)〜(c)は本発明の自動吻合器の実施の一形態の要部を示す断面図である。
【図4】(a)〜(c)は本発明の自動吻合器の他の実施の形態における要部を示す断面図であり、(d)は本実施の形態の全体の構成を模式的に示す概略正面図である。
【図5】本発明に従って製作した手術用補綴装置の斜視図であって、装置の全体的外観を図示したものである。
【図6】図5の装置の結紮ヘッドアセンブリーの長手方向縦断面図でアンビルを完全に開いた状態を示す。
【図7】結紮ヘッドアセンブリーの長手方向拡大断面図であって部分的に閉じた位置にあるアンビルを示す。
【図8】結紮ヘッドアセンブリーの長手方向拡大断面図で閉じた位置にあるアンビルを示す。
【図9】結紮ヘッドアセンブリーの長手方向拡大断面図であって射出位置にある綴針駆出装置を示す。
【図10】アンビルに対して形成される綴針の部分拡大図である。
【図11】補綴装置の軸アセンブリーを示す長手方向拡大断面図である。
【図12】施錠位置にある図1の補綴装置のアクチュエータ・ハンドルアセンブリーの長手方向縦断面図である。
【図13】解錠位置にあるアクチュエータ・ハンドルアセンブリーの長手方向縦断面図である。
【図14】射出位置にあるアクチュエータ・ハンドルアセンブリーの長手方向縦断面図である。
【図15】ラッチ位置にある安全開放部材の斜視図である。
【図16】ラッチ開放位置にある安全開放部材の斜視図である。
【図17】安全開放部材によって起動された指示器レバーの遠心位置を示す斜視図である。
【図18】指示器レバーの近心位置を示す斜視図である。
【図19】アクチュエータ・ハンドルアセンブリー上部の指示器窓の部分拡大図である。
【図20】補綴装置の結紮ヘッドアセンブリーと支持軸の分解斜視図である。
【図21】補綴装置の支持軸内に装置された張力部材および圧縮部材を示す拡大斜視図である。
【図22】図13の線24−24に沿って切断した支持軸アセンブリーの横断面図である。
【図23】アクチュエータ・ハンドルアセンブリーの部材の分解斜視図である。
【図24】軸アセンブリーの圧縮部材の部分切断側面図である。
【図25】圧縮部材の近心端面図である。
【図26】図24の線26−26に沿って切断した圧縮部材の断面図である。
【図27】圧縮部材の遠心端面図である。
【図28】圧縮部材の遠心端面の長手方向に拡大した部分断面図である。
【図29】圧縮部材の底面図である。
【図30】持針器、綴針駆出装置、圧縮部材の遠心端の分解斜視図である。
【図31】綴針駆出装置の端面図である。
【図32】図31の線32−32に沿って切断した綴針駆出装置の長手方向断面図である。
【図33】綴針駆出装置の側面図である。
【図34】結紮ヘッドアセンブリー用筐体の長手方向断面図である。
【図35】補綴装置のアンビルの斜視図で、結紮ヘッドアセンブリー内に含まれる套管針から取り外したアンビル軸を示す。
【図36】套管針に装着したアンビル軸を示す拡大部分断面側面図である。
【図37】アンビル軸と套管針の間の接続を示す部分拡大図である。
【図38】アンビルアセンブリー内に含まれる一対の保持クリップと裏打ちワッシャを示す分解斜視図である。
【図39】ワッシャのないアンビルアセンブリーの長手方向拡大断面図である。
【図40】保持クリップを除去したアンビルアセンブリーの断面図である。
【図41】アンビルアセンブリーの裏打ちワッシャの底面図である。
【図42】裏打ちワッシャの側面図である。
【図43】図41の線42−42に沿って切断した裏打ちワッシャの断面図である。
【図44】アンビルによる裏打ちワッシャの保持を示す部分断面拡大斜視図である。
【図45】アンビルアセンブリーと共に使用する着脱可能な套管針を示す斜視図である。
【図46】倍力位置にあるアンビル軸内に挿入した着脱可能な套管針を示す断面図である。
【図47】減力位置にあるアンビル軸内に挿入した着脱可能な套管針を示す断面図である。
【符号の説明】
1 案内バルーン
2 基部
3 バルーン部
4 チューブ
5 ポンプ
50 補綴装置(自動吻合器)
60 結紮ヘッドアセンブリー
61 筐体
62 綴針駆出装置
63 複数のフィンガ
64 筒状接栓
68 持針器
69 輪状のナイフまたは剪刀
70 支持軸アセンブリー
72 受接管またはスリーブ
74 延長部分
80 アクチュエータ・ハンドルアセンブリー
82 調節ノブ
84 指示器
86 綴針作動レバー
87 目盛
88 ラッチ部材
90 綴針
100 アンビルアセンブリー
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic anastomosis device for anastomosing biological tissues or organs using staples and a guide balloon that can be attached to the automatic anastomosis device.
[0002]
[Prior art]
Conventionally, in the surgical operation on the digestive tract, methods of end-to-end anastomosis, end-side anastomosis and side-to-side anastomosis have been used. As an example of end-to-end anastomosis, when the stomach is completely removed due to the onset of gastric cancer, the end of the esophagus and the end of the jejunum are folded inward in the radial direction. The stitches are sutured along the direction, and the central portion of the stitched portion is excised with a circular knife to anastomose the two.
[0003]
However, in the small intestine or large intestine such as the jejunum, unlike the esophagus, the feeding blood vessels run along the circumferential direction, and if the feeding blood vessels are sutured in the extending direction, the blood flow becomes worse, worst, necrosis. There were times when it fell into a state. For this reason, in recent years, end-side anastomosis is preferred over end-to-end anastomosis. That is, in the above-described example, the end-side anastomosis is such that an opening is formed in the wall near the end of the jejunum, and this opening and the esophagus end are anastomosed in a circular shape. Less affected by blood flow.
[0004]
An automatic anastomosis device that can perform anastomosis quickly and hygienically is used in the above-described operation. As such an automatic anastomosis instrument, for example, the one shown in FIG. 5 (Japanese Patent Laid-Open No. 5-212041) is known.
[0005]
An automatic anastomosis device 50 shown in FIG. 5 includes a ligation head assembly 60 that projects anastomosis staples from a tip portion, a long support shaft assembly 70 connected to the ligation head assembly 60, and the ligation head assembly. The handle assembly 80 is configured to control the discharge of staples from the leading end of the reel 60. The ligation head assembly 60 includes a columnar housing 61 serving as a staple housing that houses a staple for suturing a living tissue and a cylindrical scissors 69 for cutting the living tissue. A trocar 73 as a trocar that is detachably engaged with an anvil shaft 104 of an anvil assembly 100 described later is disposed at the center of the front end of the housing 61.
[0006]
According to the automatic anastomosis instrument 50 having such a configuration, the distal end portion of the ligation head assembly 60 is inserted into the living tissue, the trocar 73 is exposed from the position to be anastomosed, and the surrounding living tissue is removed. The ligament is ligated to the base of the trocar 73, the anvil shaft 104 is exposed from the other anastomosis location corresponding to the ligated location, and the surrounding biological tissue is ligated to the base of the anvil shaft 104. The tube needle 73 and the anvil shaft 104 are engaged with each other, the distance between the two is reduced, the distal end portion of the ligation head assembly 60 and the anvil assembly 100 are brought into contact with each other, and anastomosis is performed with a staple in a circumferential shape. A series of anastomosis operations can be completed by incising with a scissors 69.
[0007]
[Problems to be solved by the invention]
As described above, by using the automatic anastomosis device 50, an anastomosis operation can be quickly and hygienically performed. However, an operator can insert the distal end portion of the ligation head assembly 60 into a living tissue. When inserting the ligation head assembly 60, the peripheral edge portion of the distal end portion of the ligation head assembly 60 is in strong contact with the living tissue, which may cause serious damage to the living tissue. For this reason, the surgeon must carefully and carefully push the ligation head assembly 60, and the surface of the living tissue is easily slipped by body fluids, which makes it difficult to insert into the tissue. There were problems such as increased time and burden on patients.
[0008]
Japanese Patent Laid-Open No. 9-19501 discloses a surgical shaft including a tubular shaft, a tissue contact component that is at least partially transparent communicating with the distal end portion of the shaft, and an inflatable balloon attached to the shaft. A dissecting instrument is disclosed, and Design Registration No. 1008181 discloses a conical insertion tool that is attached to the distal end portion of the anastomotic device and assists the smooth introduction of the anastomotic device into the digestive tract. These publications only disclose the background art or form of the present invention.
[0009]
The present invention has been made to solve the above-described problems, and an object thereof is to provide a guide balloon for quickly and safely inserting an insertion portion of an automatic anastomosis instrument into a living tissue.
[0010]
Another object of the present invention is to provide an automatic anastomosis instrument having the guide balloon.
[0011]
[Means for Solving the Problems]
The present invention relates to a guide balloon that can be attached to the distal end side of the insertion portion of an automatic anastomosis device that inserts a long insertion portion into a living tissue and performs anastomosis between living tissues, and is a balloon that can be deformed when expanded. And a base portion that supports the balloon portion and is engageable with the distal end side of the insertion portion of the automatic anastomosis instrument.
[0012]
The present invention is an automatic anastomosis device for performing an anastomosis between living tissues by inserting a long insertion portion into a living tissue, including a guide balloon that can be attached to the distal end side of the inserting portion, And a balloon part that is deformable when inflated, and a base part that supports the balloon part and is engageable with the distal end side of the insertion part.
[0013]
The present invention is an automatic anastomosis device for performing an anastomosis between living tissues by inserting a long insertion portion into a living tissue, including a guide balloon integrally provided on the distal end side of the inserting portion, The balloon has a balloon part that can be deformed when inflated, and a gas flow tube connected to the balloon part.
[0014]
Here, the “guide balloon” described above is a device that can be attached to and detached from the conventional automatic anastomosis device, and is smooth when it is inflated when the insertion portion of the automatic anastomosis device is inserted into the living tissue. The basic configuration includes a balloon part that ensures the safety of the living tissue by ensuring insertion, and a base part that supports the balloon part during inflation or contraction and is detachably fixed to the distal end side of the insertion part. In the case where the automatic anastomosis device is integrally provided at the distal end side of the insertion portion, the balloon portion directly fixed to the distal end side of the insertion portion and the balloon portion is inflated or expanded. The basic structure is a gas flow tube for contraction. The term “guide balloon” includes both the state where the balloon portion is inflated and the state where the balloon portion is deflated before and after inflation. The “tip side of the insertion portion” refers to the entire portion of the automatic anastomosis instrument that is directly inserted into the living tissue. More specifically, the trocar as a trocar, which will be described later, It includes a disc-shaped tip surface in a cylindrical housing to be supported, an inner wall surface and a bottom surface of a space formed between a cylindrical scissors and the trocar.
[0015]
The “biological tissue” refers to a biological tissue or organ that can be anastomosed by an automatic anastomosis instrument, and more specifically includes a small intestine such as a jejunum, a tubular organ such as a large intestine, and an esophagus. .
[0016]
Furthermore, the term “integrated” means that the insertion portion and the guide balloon are directly or indirectly before the anastomosis operation so that the guide balloon does not fall out of the insertion portion even if mechanical means are taken during the anastomosis operation. The state that is fixed.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 (a) and 1 (b) are schematic front views showing an embodiment of the guide balloon of the present invention, and FIG. 1 (a) is a state before inflation of the balloon portion in the guide balloon. FIG. 1 (b) shows a state when the balloon portion of the guide balloon is inflated. In addition, the same code | symbol is attached | subjected to the component same as the component of the conventional automatic anastomosis machine shown in FIG. 5, and the description of the part is abbreviate | omitted.
[0018]
In FIGS. 1A and 1B, reference numeral 1 denotes a guide balloon. The guide balloon 1 has a cylindrical base portion 2 into which a trocar 73 attached to the distal end portion of the ligation head assembly 60 of the automatic anastomosis device 50 shown in FIG. For example, a balloon portion 3 that is folded during use and can be deformed when inflated, for example, has a tapered shape, and a tube 4 for supplying gas into the balloon portion 3 or exhausting gas from the balloon portion 3 A pump 5 for supplying or exhausting the gas in the balloon unit 3 through the tube 4 is schematically configured.
[0019]
The inner surface of the base portion 2 is formed to be complementary to the outer surface shape of the trocar 73, and as shown in FIG. From the viewpoint of securing safety such as being secured to 50 and avoiding the risk of falling off, it is preferable that the base 2 and the trocar 73 are detachably engaged. That is, the concave portion 73a formed on the outer surface of the trocar 73 and the convex portion 2b formed on the inner surface 2a of the base portion 2 are detachably engaged. The engagement form in the present embodiment may utilize the complementarity of both forms as described above, or may utilize the biasing force to both or one side like a leaf spring. . Further, the guide balloon is generated by using a member made of a shape memory alloy that transforms at a temperature in the living tissue in consideration of being used in the living tissue, and generating a pressure contact force between them. It is also possible to more reliably prevent the dropout. Further, it is desirable that the outer diameter of the base portion 2 is set to be approximately the same as the maximum diameter of the trocar 73. The same applies to the guide balloon 1 shown in FIG.
[0020]
As shown in FIG. 1B, the balloon portion 3 of the guide balloon 1 is tapered as described above. However, the automatic anastomosis device is guided into the living tissue and can be easily inserted into the living tissue. It is preferable to have a conical shape in terms of height and prevention of damage to living tissue. In particular, the longitudinal cross-sectional shape is preferably a substantially equilateral triangle. Therefore, the handle assembly 80 or the like is operated so that the height of the trocar 73 becomes the apex of an equilateral triangle whose one side is the diameter at the distal end of the ligation head assembly 60 of the automatic anastomosis instrument 50. Thus, the trocar 73 is adjusted appropriately by moving it forward or backward. Further, the maximum diameter of the balloon portion 3 at the time of inflation is set to be the same as or slightly larger than the maximum diameter of the distal end portion of the ligating head assembly 60. That is, the difference L between the maximum diameters is 0 (mm) ≦ L ≦ Max (mm). In particular, L is preferably 0 mm. This is because the outer surface of the balloon part 3 and the outer surface of the ligation head assembly 60 are flush with each other, and friction and the like during insertion into a living tissue can be suppressed, thereby enabling smooth guidance. Further, Max is a positive value, and the upper limit thereof is determined in consideration of the allowable dimension at the time of expansion of the living tissue into which the distal end portion of the ligating head assembly 60 is inserted. That is, when the balloon part 3 is forcibly pushed in, the living tissue expands excessively, and if the allowable size when expanding the living tissue is exceeded, the expanded living tissue is cracked, which is not preferable.
[0021]
Also, the mounting position of the balloon portion 3 on the trocar 73 is determined by appropriately determining the degree of exposure of the distal end portion of the trocar 73 such as the shape and size of the balloon portion 3.
[0022]
Furthermore, the cross-sectional shape of the balloon portion 3 when inflated may be a so-called donut shape in which the cross-sectional shape from the trocar 73 to the ligation head assembly 60 in the radial direction outward is a perfect circle or an ellipse. Good. That is, as described above, the cross-sectional shape of an equilateral triangle is most suitable. However, the present invention is not limited to this, and the tip shape on the guide side may be a flat shape instead of a tapered shape.
[0023]
As shown in FIG. 1A, a recess 73 b for engaging with the anvil shaft 104 of the anvil assembly 100 is formed in the lower portion of the trocar 73 of the automatic anastomosis instrument 50. The formation position of the recess 73 b is further below the lower edge of the base 2 of the guide balloon 1 attached to the trocar 73. This is to ensure that the anvil shaft 104 is fixed to the trocar 73 even after the guide balloon 1 is used.
[0024]
Embodiment 2. FIG.
2 (a) to 2 (c) are schematic front views showing an embodiment of the automatic anastomosis device of the present invention, and FIG. 2 (a) shows a guide balloon according to the previous embodiment. FIG. 2 (b) shows a state before attachment to the conventional automatic anastomosis apparatus shown in FIG. 5, FIG. 2 (c) shows an inflated state of the balloon portion, and FIG. ) Is a plan view of the inflated balloon portion and the like shown in FIG. FIG. 2E is a partial cross-sectional view schematically showing a state in which the automatic anastomosis instrument having the guide balloon shown in FIG. 2C is inserted into the living tissue. In addition, the same code | symbol is attached | subjected to the component same as the component of the conventional automatic anastomosis machine shown in FIG. 5, and the description of the part is abbreviate | omitted.
[0025]
First, in FIG. 2 (a)-FIG.2 (e), as a constituent material of the balloon part 3, it does not show rejection with respect to a human biological tissue, it has anti-drilling property, and is flexible at the time of expansion | swelling. A silicone elastomer that exhibits flexibility, anti-friction properties and the like is preferable. Further, various lubricants may be applied to the surface of the balloon portion 3 to improve the anti-friction property. This also applies to the constituent material of the tube 4.
[0026]
The pump 5 is preferably of a type that can switch between gas supply and exhaust. Here, the gas is preferably air that does not affect living tissue even if it leaks during surgery. In order to maintain the tapered shape of the balloon part 3, it is preferable that the gas is contained in a gas. However, as long as it does not adversely affect the living tissue, the contents of the balloon part 3 other than the gas are shock-absorbing, It may be a liquid such as physiological saline having flexibility and viscosity, a solid solution, or a solid.
[0027]
In the present embodiment, the inside of the balloon part 3 is configured as a single tapered room. However, the present invention is not limited to this, and the balloon part 3 is divided into a plurality of rooms. May be. The above-mentioned “configuration divided into a plurality of rooms” includes the case where the balloon unit 3 is configured by a plurality of balloons in addition to the case where the balloon unit 3 is configured by a single balloon having a plurality of rooms. And In the case where the balloon unit 3 is composed of a plurality of balloons, for example, by arranging a plurality of balloons so that the maximum diameter at the time of inflation gradually increases from the distal end side to the rear end side of the trocar 73. When the balloons are inflated, the overall shape can be tapered. By dividing into a plurality of chambers in this way, even when the tip chamber is crushed during insertion into the living tissue, the rear chamber is not crushed as much as the tip chamber. As a result of protruding outward in the radial direction, the peripheral portion of the distal end portion of the ligating head assembly 60 can be covered with respect to the living tissue, and damage to the living tissue can be prevented.
[0028]
Furthermore, it is also possible to have a configuration in which, among a plurality of rooms, adjacent rooms are brought into contact with each other via a partition wall, and a valve that allows only gas movement from a front end room to a rear room is provided on the wall. . That is, when the tip chamber is crushed during insertion into the living tissue, the gas in the tip chamber moves to the rear chamber by the valve, so the internal pressure in the rear chamber increases, The shape is maintained, and the peripheral edge portion of the distal end portion of the ligating head assembly 60 can be prevented from being exposed to the living tissue.
[0029]
After the guide balloon 1 having the above-described configuration is attached to the distal end portion of the ligation head assembly 60 of the automatic anastomosis instrument 50 and performs guidance or the like into the living tissue, the ligation head assembly 60 is The guide balloon 1 is not required when the distal end portion is disposed between the biological tissues to be anastomosed and the trocar 73 breaks through the biological tissue. Therefore, the guide balloon 1 that can be detachably attached to the conventional automatic anastomosis device 50 is more suitable for the end-to-end anastomosis that does not need to pierce the living tissue than the above-described end-side anastomosis and side-side anastomosis. In the end-to-end anastomosis, the guide balloon 1 may be removed when the tip of the ligation head assembly 60 reaches the end of a living tissue such as the intestinal tract.
[0030]
In addition, in the said embodiment, although the balloon part 3 was folded on the outer surface of the base 2, the structure accommodated in the base 2 may be sufficient.
In the above-described embodiment, the tube 4 and the pump 5 connected to the balloon unit 3 have been described as basic components. However, the balloon unit 3 is already filled with gas before mounting, and the balloon unit 3 When the taper shape can be maintained, it is not necessary to provide the tube or the like.
[0031]
According to the present embodiment, for example, when the automatic anastomosis instrument 1 with the guide balloon 1 attached thereto is pushed into the intestinal tract C as a living tissue as shown in FIG. 2 (e), the inner wall surface of the intestinal tract C is damaged. The automatic anastomosis device 50 can be inserted into the living tissue smoothly and easily without giving. In particular, since the outer surface of the balloon portion 3 of the guide balloon 1 and the outer surface of the ligation head assembly 60 of the automatic anastomosis instrument 1 are substantially flush with each other, the load received by the living tissue can be suppressed.
[0032]
In the present embodiment, a silicone elastomer that can maintain the outer diameter even when pressed or the like is used as a material constituting the balloon portion 3. However, when the outer diameter of the balloon portion 3 is slightly smaller than the outer periphery of the distal end periphery of the ligation head assembly 60 depending on the degree of the pressing force, the distal end periphery of the ligation head assembly 60 becomes a living tissue. Even if slightly exposed, the deformed balloon portion 3 can come into contact with the peripheral edge of the distal end portion of the ligation head assembly 60 in a curved manner, and the living tissue can be protected.
[0033]
Embodiment 3 FIG.
FIG. 3A to FIG. 3C are cross-sectional views showing the main part of one embodiment of the automatic anastomosis instrument of the present invention.
The feature of this embodiment is that the guide balloon 1 shown in FIGS. 2 (a) to 2 (c) is integrally attached to the distal end portion of the ligation head assembly 60 of the conventional automatic anastomosis device shown in FIG. It is in the point including the improvement which does not stop at a point.
[0034]
The improvement in the present embodiment is that the dedicated base portion of the balloon portion 3 is removed and the balloon portion 3 is directly fixed to the lower portion of the trocar 73, and the folded balloon portion 3 is formed in a cylindrical shape with the trocar 73. The tube 4 that is fixed to the bottom of the donut-shaped space between the scissors 69 and that supplies and exhausts the gas from the balloon 3 is passed through the housing 61 and the staple ejection device 62. As shown in FIG. 3B, by supplying gas from the pump 5 into the balloon part 3 through the tube 4, the balloon part 3 can be inflated into a tapered shape. On the contrary, as shown in FIG. 3C, by discharging the gas from the balloon portion 3 by the pump 5, the balloon portion 3 in a state of being contracted to the bottom of the donut-shaped space can be accommodated.
[0035]
In the present embodiment, since the balloon part 3 can be stored in a donut-shaped space, the balloon part 3 is moved when the distal end of the ligation head assembly 60 reaches the affected part of a living tissue such as the intestinal tract. After being housed in the donut-shaped space, the balloon 3 is sandwiched between the scissors 69 even if the side wall of the living tissue as the affected part is pierced with the trocar 73 and the end-side or side-side anastomosis is performed. The anastomosis of the living tissue can be performed reliably.
[0036]
Embodiment 4 FIG.
4 (a) to 4 (c) are cross-sectional views showing the main part of another embodiment of the automatic anastomosis device of the present invention, and FIG. 4 (d) schematically shows the overall configuration of the present embodiment. FIG.
[0037]
In the present embodiment, the guide balloon 1 is provided integrally with the automatic anastomosis device 50 as in the third embodiment, and the feature is that the tube 4 of the guide balloon 1 is passed through the automatic anastomosis device 50. is there. That is, as shown in FIGS. 4A to 4D, one end of the tube 4 is connected to the balloon part 3 from the trocar 73 and the other end is supported from the trocar 73 as it is. The shaft assembly 70 and the staple operating lever 86 are connected to the external pump 5 via a rim (not shown) formed at the rear end portion. Therefore, since the tube 4 does not contact the living tissue directly during the anastomosis operation, the degree of freedom of the material constituting the tube 4 increases.
[0038]
In the present embodiment, as shown in FIG. 4A, the trocar 73 of the automatic anastomosis instrument 50 has an outer shape with few uneven portions, and is folded on the outer surface of the trocar 73. A loose bag-like balloon portion 3 is provided. A desired gas or the like is supplied to the balloon unit 3 from the pump 5 through the tube 4 described above, and the gas or the like can be forcibly removed from the balloon unit 3 when the use is completed as necessary.
[0039]
In the present embodiment, it is possible to insert and engage the distal end portion of the trocar 73 of the ligation head assembly 60 into the anvil shaft 104 of the anvil assembly 100 during the anastomosis. The anvil shaft 104 may protect the balloon part 3 folded on the outer surface of the base part 2. That is, the inner diameter of the anvil shaft 104 is set to be large enough to cover the folded balloon portion 3 and set smaller than the inner diameter of the scissors 69, and the inner surface of the distal end of the anvil shaft 104 and the base 2 The lower outer surface is engaged. For example, as shown in FIG. 4A, the engagement position of the base portion 2 is preferably within the scissors 69. That is, by adopting a configuration in which the tip of the anvil shaft 104 enters the scissors 69, it is possible to avoid contact with the scissors 69 of the balloon portion 3 covered by the anvil shaft 104. Therefore, according to such a configuration, since the staples and the scissors 69 are not brought into contact with the balloon portion 3 during anastomosis, leakage from the anastomosis portion can be reliably prevented.
[0040]
In the present embodiment, after the guidance is completed, the gas or the like in the balloon portion 3 is forcibly removed by the pump 5 so that the balloon portion 3 is adsorbed to the outer surface of the trocar 73 as the base portion 2. This is to save space and prevent an obstacle when the anvil shaft 104 is fixed to the trocar 73.
[0041]
Next, with reference to FIG. 5 to FIG. 47, the configuration and method of use other than the main parts of the automatic anastomosis instrument of the present invention will be described. In the following drawings, the configuration of the automatic anastomosis instrument capable of mounting the guide balloon in the first embodiment is shown for convenience.
[0042]
Referring to FIG. 5, an embodiment of the automatic anastomosis instrument of the present invention (hereinafter also referred to as a surgical anastomosis prosthetic device or simply a prosthetic device), indicated generally at 50, is illustrated. This includes a distal ligation head assembly 60 connected to a mesial actuator handle assembly 80 by a longitudinally bent support shaft assembly 70. Prosthetic device 50 includes an anvil assembly 100 that is slidable longitudinally relative to ligating head assembly 60. A rotatable adjustment knob 82 is provided at the mesial end of the actuator handle assembly 80 to adjust the spacing between the ligation head assembly 60 and the anvil assembly 100. A movable indicator 84 is visible through a window 85 at the top of the handle assembly 80 and indicates the height of the staple selected by rotation of the adjustment knob 82. As shown in FIG. 19, the indicator 84 can move along a scale 87 that indicates that the anvil gap is within the desired operating range of the prosthetic device 50. The position of the indicator 84 also indicates whether the height of the selected staple is large or small.
[0043]
The staple actuating lever 86 is used to drive the surgical staple from the ligating head assembly 60 to provide the desired staple height when the anvil assembly 100 is closed. It is mounted on 80 so as to be rotatable. A pivoting latch member 88 is mounted on the handle assembly 80 to lock the staple actuating lever 86 against movement, and prevents differential of the ligation head assembly 60 when the anvil gap is out of range. .
[0044]
Referring to FIGS. 6 and 20, the ligation head assembly 60 includes a cylindrical housing 61 that slides on the staple ejector 62 that can be advanced or retracted by an investigation of the actuator handle assembly 80. Accept freely. The staple ejector 62 includes a plurality of fingers 63 for engaging and ejecting the plurality of staples 90 from the needle holder 68 attached to the distal end of the housing 61. The needle holder 68 includes a plurality of staple receiving slots 65 into which the staple 90 is inserted. The staple ejector 62 supports a ring-shaped knife or scissors 69 that are advanced and retracted together with the staple ejector 62.
[0045]
The ligating head assembly 60 includes a hollow cylindrical plug 64 at the mesial end of the housing 61 that receives the distal end of the support shaft assembly 70. The receiving tube or sleeve 72 covers the connection between the tubular plug 64 and the distal end of the support shaft assembly 70. The receiving tube 72 is compressed or contracted radially inward by, for example, an electromagnetic deformation process, and the cylindrical plug 64 is tightly joined to the distal end of the support shaft assembly 70. Similarly, the mesial end of the support shaft assembly 70 is received by a cylindrical extension 74 at the distal end of the actuator handle assembly 80. A receiving tube or sleeve 76 covers the junction between the mesial end of the support shaft assembly 70 and the distal end of the cylindrical extension 74. The receiving tube 76 is compressed or contracted radially inward by, for example, a magnetic deformation process, and the support shaft assembly 70 is tightly joined to the actuator / handle assembly 80.
[0046]
Referring to FIGS. 6 and 35, the anvil assembly 100 extends in the form of a hollow shaft that is detachably fixed to a trocar 73 that is slidably supported by a ligation head assembly 60. A generally annular anvil 102 mounted on top is included. The trocar 73 is a central support tube 66 formed on the cylindrical housing 61 so as to move in the longitudinal direction with respect to the needle holder 68 installed at the distal end of the housing 61 (FIG. 6). It is slidably received inside. The staple receiving slots 65 in the needle holder 68 are arranged in a ring-shaped row for receiving the surgical staples 90. The staple receiving slots 65 are preferably arranged in concentric annular rows with a slight spacing. Anvil 102 includes an annular rim 106 having a plurality of staple forming grooves 108 (FIG. 44) for forming staples 90 when ejected relative to anvil 102.
[0047]
The anvil assembly 100 includes a pair of long spring-like retaining clips 110 that extend longitudinally along the anvil shaft 104 to engage the trocar tip 75 when the trocar 73 is inserted into the anvil shaft 104. including. As shown in FIG. 36, the retaining clip 110 extends longitudinally through the anvil shaft 104 and extends outwardly to be received in longitudinal slots 114 disposed along opposite sides of the anvil shaft 104. Part 112 is included. An outwardly extending portion 112 of each retaining clip 110 is folded radially inward to provide a claw 116 for capturing the trocar tip 75 therebetween. The widened portion 112 of the retaining clip 110 due to the long slot 114 can flex radially outward when the trocar tip 75 is inserted into the anvil shaft 104 and advanced between the claws 116.
[0048]
To facilitate the insertion of the trocar 73 into the anvil shaft 104, the trocar tip 75 has a reduced force profile. Desirably, the trocar tip 75 forms a shallow angle wedge to reduce the force required to spread the retaining clip 110. For example, the trocar tip 75 is manufactured in a trapezoidal shape with a wedge shape of 30 degrees or less with respect to the trocar shaft, facilitating the insertion of the trocar 73 between the holding clips 110. . In the preferred embodiment, the trocar tip 75 pushes the retaining clip 110 as the trocar 73 is inserted into the anvil shaft 104 and a trapezoidal cusp 77 wedged at an angle of 30 degrees at the distal end. It has an adjacent trapezoidal surface 79 wedged at an angle of 9 degrees for spreading.
[0049]
When the prosthetic device 50 is in the open position (FIG. 6), the retaining clip 110 allows the anvil assembly 100 (FIG. 35) to be detachable from the trocar 73 by pushing or pulling on the anvil assembly 100, respectively. is there. When the prosthetic device is in the closed position (FIG. 8), the trocar 73 is pulled into the central support tube 66, which restricts the radial movement of the retaining clip 110 and the nail 116 is in the trocar tip 75. To stay in position. As a result, the anvil assembly 100 is locked with the trocar 73 and the anvil 102 can resist the maximum output of the prosthetic device without disengaging the retaining clip 110 from the trocar tip 75.
[0050]
As shown in FIG. 38, each retaining clip 110 has a ridge 121 at the distal end of the anvil shaft 104 and an extended peak 118 that provides one or more lateral overhangs or shoulders 120 to tension the anvil 102. At the distal end. A pair of inner surfaces 122 (FIG. 39) on the anvil shaft 104 engage opposite ends of the retaining clip 110. The inner surface 122 aligns a long slot 114 on the opposite side of the anvil shaft 104 with a portion 112 that extends outside the retaining clip 110 to position the key passage 123 (FIG. 40) within the anvil shaft 104. Stipulate.
[0051]
Referring to FIG. 36, the trocar 73 has a long cylindrical body 130 having a first conical tapered portion 132 that terminates in a reduced diameter long portion 134 that supports the trocar tip 75 at the distal end. Including. The second conical tapered portion ends with a reduced diameter cylindrical neck 138 where the outwardly expanding shoulder portion 140 behind the trocar tip 75 is located. Shoulder portion 140 is engaged by pawl 116 when trocar tip 75 is inserted between retaining clips 110.
[0052]
As shown in FIG. 37, the cylindrical trocar main body 130 is offset inwardly at a position adjacent to the first conical tapered portion 132, and the peripheral edge 142 of the trocar 73 is formed. provide. The edge 142 engages the end of the sleeve 105 when the trocar 73 is inserted into the hollow anvil shaft 104. The sleeve 105 has an inwardly angled portion 124 for receiving a conically angled portion taper 132 of the trocar body 130. The outer chamfered portion 126 at the mesial end of the sleeve 105 provides a peripheral thin edge 128 for engaging the peripheral edge 142 of the trocar body 130. Chamfered portions 126 and 144 facilitate the transfer of tissue onto the junction between trocar body 130 and sleeve 105 as trocar 73 is pulled by ligation head assembly 60. Desirably, the thin edge 128 at the periphery of the sleeve 105 has a slightly smaller diameter than the peripheral edge 142 to facilitate tissue transfer from the trocar 73 to the anvil shaft 104.
[0053]
Referring to FIG. 39, the anvil shaft 104 has a composite structure including a hollow sleeve 105 made of metal such as stainless steel and a thin hollow cylindrical cover 150 made of plastic and fixed to the outer surface of the metal sleeve 105. . The cylindrical cover 150 is slightly larger in diameter than the anvil shaft 104 and the rest of the cover 150 and has a widened peripheral portion 152. The widened peripheral portion 152 is sized to closely fit the distal end of the support tube 66 (FIG. 8) when the trocar 73 and the anvil shaft 104 are pulled inside the ligating head assembly 60. Yes. The purpose of the peripheral portion 152 is to provide accurate alignment of the anvil 102 and needle holder 68.
[0054]
Spiral filaments (hereinafter referred to as external filaments) 154 (FIG. 38) disposed on a plurality of external peripheries extend in the longitudinal direction from the widened peripheral portion 152 toward the mesial end of the cylindrical cover 150. Spiral filaments (hereinafter referred to as “inner filaments”) 156 (FIG. 34) disposed in a plurality of inner peripheral portions are formed inside the support tube 66. As the anvil shaft 104 is pulled into the support tube 66, the outer filament 154 is received between the inner filaments 156 to provide accurate peripheral alignment between the anvil 102 and the needle holder 68. As a result of the precise alignment of the shaft and the periphery, the staple forming groove 108 of the anvil 102 is precisely aligned with the staple receiving slot 65 in the staple receiving slot holder 68.
[0055]
Another purpose of the widened peripheral portion 152 is to position a peripheral notch 158 on the anvil shaft 104 for convenience in purging a tubular tissue purse. As shown in FIG. 6, when the purse string suture is made to the anvil shaft 104 at the peripheral notch 158 at a position beyond the peripheral part 152 where the tissue spreads in the centrifugal direction, the purse-sewn tissue is spread. It doesn't slide out easily beyond. As a result, the purse string sutured tissue is confined to the distal region of the anvil shaft 104 beyond the spread periphery, and the anvil shaft 104 does not slide back through the purse string suture tissue.
[0056]
As shown in FIG. 34, it is desirable that the internal filaments 156 are separated from the distal end of the support tube 66 and spaced apart in the mesial direction. With this arrangement of the internal filaments 156, as the anvil shaft 104 is pulled, the tendency of the purse string suture tissue to be pinched between the external filaments 154 and the internal filaments 156 is reduced, and the tissue enters the support tube 66. Prevents being pulled in. Also, as shown in FIG. 6, the distal end of the support tube 66 is positioned above the outer filament 154 as the anvil shaft 104 is pulled to prevent tissue from being drawn into the hollow interior of the housing 61. A flat annular edge 67 disposed adjacent to the needle holder 68 for extruding tissue. The central support tube 66 provides increased visibility so that the anvil shaft 104 is pulled into the ligation head assembly 60.
[0057]
Referring to FIGS. 38 and 44, the anvil assembly 100 includes a backing washer 160 that is installed in the anvil 102 to provide a tissue cutting surface from which the purse string sutured tissue is excised. The backing washer 160 is annular in structure and is mounted concentrically within the annular rim 106 of the anvil 102. An annular groove 162 (FIG. 44) extends inwardly from the distal end of the annular groove 162 into the washer 160 and terminates just before the mesial end. By groove 162, washer 160 includes an outer annular wall 164 and an inner annular wall 166 joined at the mesial end of washer 160 by a thin girder 168. The girdle 168 provides a backing surface where the purse string sutured tissue is excised by the circular knife 69. An annular ridge 165 extends radially inward from the distal end of the inner annular wall 166 and rests on the anvil 102 to reinforce the inner wall 166 of the washer 160.
[0058]
As shown in FIGS. 38 and 41, the backing washer 160 includes a plurality of claws 170 that project radially outward at the distal end of the outer annular wall 164. For example, the three claws 170 are evenly spaced around the washer 160. An annular recess or groove 172 (FIGS. 19 and 20) is formed in the centrifugal direction inside the anvil rim 106 to receive the pawl 170 on the washer 160. The claw 170 is hooked into the annular recess 172 to fix the washer 160 to the anvil 102. The pawl 170 and the annular recess 172 provide a frictional fit to prevent accidental removal of the washer 160 from the anvil 102 during shipping or storage.
[0059]
The backing washer 160 includes a first pair of semi-circular cutouts 173 (FIG. 41) formed in its outer annular wall 164, which is a second pair formed in the inner annular wall 166. The pair of semi-circular cutout portions 174 are aligned with each other. The notches 173 and 174 are arranged at positions facing the diametric direction of the washer 160 and are aligned with the pair of holes 176 of the anvil 102. Notches 173 and 174 provide sufficient clearance to receive the formed ends of a pair of locking pins 177 used to attach tip 178 (FIG. 38) to anvil 102.
[0060]
Referring to FIG. 11, the support shaft assembly 70 transmits a compression force and movement required from the actuator / handle assembly 80 to operate a compression member 92 for operating the staple ejector 62 in the ligation head assembly 60. Including. The support shaft assembly 70 also includes a pair of long flexible tension belts 95 for transmitting the required tension from the actuator handle assembly 80 to the anvil assembly 100 to oppose the compressive force on the anvil assembly 100 and 96 tension members 94 are included. Flexible tension belts 95 and 96 transmit movement from the actuator and handle assembly 80 so that the anvil assembly 100 can be adjusted to a position relative to the ligating head assembly 60. A long flexible spacer belt 98 is included in the space between the support shaft assembly 70 and the flexible tension belts 95 and 96.
[0061]
Referring to FIG. 24, the compression member 92 is preferably made from a plastic material and is made from a long member that includes a straight mesial portion 200 that merges a central curved portion 202 that continues to a straight sleeve 204 at the distal end. Become. In contrast to the support shaft assembly 70, which has a substantially uniform curvature over its entire length, the curved portion 202 of the central portion of the compression member 92 changes in the portion between the straight mesial portion 200 and the straight sleeve 204 at the distal end. Has a radius of curvature. The compression member 92 is made of a flexible material having a curvature relative to the hollow cylindrical support shaft assembly 70, such as a carbon fiber or glass fiber filled plastic material.
[0062]
As shown in FIGS. 24 and 25, the mesial extension 206 is determined by the offset 208 of the compression member 92. The mesial extension 206 is provided with an outwardly extending pin 210 to facilitate the connection of the compression member 92 and the actuator handle assembly 80. The long groove 212 extends longitudinally from the mesial extension 206 along the straight mesial portion 200 and ends before the middle curved portion 202 of the compression member 92. As shown in FIG. 26, the intermediate curved portion 202 is not solid and cylindrical with an upright guide surface or ramp 214 extending longitudinally along substantially the entire length of the curved portion 202. It has a cross section. The ramp 214 provides an integral guide surface on the compression member 92 for engaging and supporting the flexible tension belts 95 and 96 of the tension member 94 included in the curved support shaft assembly 70.
[0063]
24 and 30, the distal end sleeve 204 of the compression member 92 is suitable for securely tightening the staple ejection device 62, and the compression member 92 is ejected against the needle holder. The device 62 can be advanced or retracted. The sleeve 204 includes an extension 220 that extends beyond a collar 222 formed at the distal end of the sleeve 204 (FIG. 28). The distal extension 220 is provided with a first set of four radially projecting protrusions 224 spaced apart at equal intervals in the circumferential direction. Further, the centrifugally extending portion 220 protrudes in the four radial directions spaced apart at equal intervals in the peripheral direction, and a second set of protrusions 226 having a wider interval than the first set of protrusions 224 protruding in the radial direction. Have. As shown in FIG. 27, the first set of protrusions 224 extend radially outwardly at substantially the same distance as the collar 222. The second set of protrusions 226 are smaller in size than the protrusions 224, and the protrusions 226 extend radially outward at a shorter distance than the protrusions 224. It is desirable that the distal extension 220 has a chamfered surface 228 (FIG. 28) to facilitate movement of the trocar 73 into the sleeve 204 as the anvil assembly 100 is pulled.
[0064]
Referring to FIG. 30, the staple ejector 62 includes a set of four long locating fingers 230 extending mesially separated by a longitudinal slot 232. As shown in FIG. 31, the slots 232 are arranged in the circumferential direction on the staple ejection device 62 at intervals of 90 degrees. Also, as shown in FIG. 32, each positioning finger 230 includes an inwardly projecting claw 234 provided with an inwardly chamfered surface 236 adjacent to the mesial end of the positioning finger 230. When the staple ejector 62 is mounted on the sleeve 204 of the compression member 92, the positioning finger 230 is bent away temporarily to facilitate movement of the claw 234 over the protrusion 226. The claw 234 is hooked at a position between the protrusion 226 and the hook 222 to fix the staple ejection device 62 to the sleeve 204. The scissors 222 transmit the compression force from the compression member 92 to advance the staple ejector 62. The staple ejector 62 can be pulled by the compression member 92 by the protrusion 226 and the claw 234.
[0065]
Referring to FIG. 21, the tension member 94 includes a pair of flexible tension belts 95 and 96 that increase the flexibility of the tension member 94 while maintaining tensile strength. The narrow distal ends of the flexible tension belts 95 and 96 are connected to the trocar 73 by a set of pins 240. The narrow mesial ends of the flexible tension belts 95 and 96 are connected by pins 242 to a control rod 300 contained within the actuator handle assembly 80. Flexible tension belts 95 and 96 include long central portions 245 and 246, respectively, which are substantially wider than the narrow mesial and distal ends of flexible tension belts 95 and 96. Since the compression member 92 has a non-cylindrical structure that is open along substantially its entire length, the tension member 94 is not disposed within or surrounded by the compression member 92. As a result, the long intermediate portions 245 and 246 of the flexible tension belts 95 and 96 are substantially the same width as the inner diameter of the support shaft assembly 70. This widened width minimizes the tendency of the flexible tension belts 95 and 96 to expand and contract as tension is transmitted from the actuator handle assembly 80 to the anvil assembly 100 via the tension member 94. .
[0066]
As shown in FIGS. 11 and 22, the flexible spacer belt 98 includes a long flexible strip 250, which protrudes perpendicular to and engages the inner surface of the support shaft assembly 70. Includes a row of blades 252. On top of the flexible spacer belt 98, a pair of long protrusions 254 extend along opposite ends of the flexible strip 250. The protrusion 254 engages the central portion 246 of the flexible tension belt 96 to reduce sliding friction between the flexible tension belt 96 and the flexible spacer belt 98. A long groove 256 is formed at the mesial end of the flexible spacer belt 98 to receive the control rod 300 included in the actuator and handle assembly 80.
[0067]
Referring to FIG. 23, the actuator and handle assembly 80 includes a pair of long handle portions 81 that fit together to form a generally cylindrical handle. Each of the handle portions 81 includes a slave core 83 that is arranged such that the staple operating lever 86 rotates. A control rod 300 is included between the handle portions for longitudinal movement along the actuator and handle assembly 80. The adjustment knob 82 is rotatably supported by the mesial end of the handle portion 81 and is threadably engaged with a shaft 302 that is threaded at the mesial end of the control rod 300. The threaded shaft 302 is connected by a thread at the distal end of the adjustment knob 82 to the sleeve 304 threaded inside. The threaded sleeve 304 is rotatably received by an annular wall 305 formed in each handle portion 81. A cylindrical lid 89 is fixed inside the mesial end of the hollow adjustment knob 82. The distal end of the control rod 300 is slidably received in a long groove 212 in the mesial portion 200 of the compression member 92. The control rod 300 is connected to the tension member 94 by a pin 242 at its distal end.
[0068]
As shown in FIG. 23, U-shaped clip 306 and screw 308 prevent control rod 300 from rotating about its axis. U-shaped clip 306 includes a long slot 310 (FIG. 12) for receiving screw 308 on each of its opposing sides. The slot 310 allows the U-shaped clip 306 to be adjusted in the longitudinal direction of the control rod 300 for the purpose of calibrating the indicator and safety release mechanism described below.
[0069]
Rotating the adjustment knob 82 in a counterclockwise direction as seen in FIG. 5 advances the control rod 300 and moves the tension member in the centrifugal direction, between the anvil assembly 100 and the ligation head assembly 60. The gap opens. A step 307 (FIG. 12) in one of the handle portions 81 engages the screw 308 to limit the movement of the control rod 300 in the centrifugal direction. By rotating the adjustment knob 82 in the opposite direction, ie, clockwise, the control rod 300 is retracted, moving the tension member in the mesial direction and closing the gap between the anvil assembly 100 and the ligating head assembly 60. The step 309 of the lid 89 restricts the movement of the control rod 300 in the mesial direction.
[0070]
The actuator and handle assembly 80 includes a safety release bracket 312 that is slidably supported on each of the handle portions 81. The safety release bracket 312 includes a long rectangular plate 314 that is slidably received between a pair of longitudinal beams 315 and 316 formed on each of the handle portions 81 below the screw shaft 302 of the control rod 300. . The screw shaft 302 extends through an upstanding collar 318 formed at the mesial end of the square plate 314. The coil spring 320 is placed between the flange 318 of each handle portion 81 and the annular wall 305 and normally presses the flange 318 toward the beam 315 in the centrifugal direction. The distal end of the safety release bracket 312 is an arm 322 that protrudes in the centrifugal direction, ends with a finger 324 that is inclined upward and protrudes in the lateral direction, and controls the movement of the indicator 84.
[0071]
As shown in FIG. 12, the indicator 84 is positioned above the support lever 326 that is mounted for axial rotation on a pair of rotational shaft pins 328 (only one is shown) formed in the handle portion 81. is doing. The arm 322 extends in the centrifugal direction along the indicator lever 326, and the finger 324 is located on the distal side of the indicator lever 326. A coil spring 320 (FIG. 23) is provided so that the indicator lever 326 is pushed in the centrifugal direction so that the indicator 84 is positioned at the distal side of the window 85 (FIG. 19).
[0072]
6 and 12, the prosthetic device 50 is shown with the anvil assembly 100 fully open and the actuator and handle assembly 80 fully advanced. When the anvil assembly 100 is fully opened, the safety release bracket 312 is pushed to the distal side by the coil spring 320, propelling the upstanding rod 318 toward the beam, the finger 324 is advanced in the centrifugal direction, and the indicator lever The engagement is released from 326. When the control rod 300 moves backward, as shown in FIG. 13, the clip 306 on the control rod 300 moves in the mesial direction to engage the hook 318 and move the safety release bracket 312 in the mesial direction. When the anvil assembly 100 first begins to tighten, the finger 324 on the safety release bracket 312 is still disengaged from the indicator lever 326 (FIG. 17). When the gap between the anvil assembly 100 and the ligating head assembly 60 is adjusted within the predetermined range of the device, the finger 324 engages the indicator lever 326 and pivots as shown in FIG. Is moved in the mesial direction along the scale 87 of the window 85 to provide an indication of the selected height of the staple produced when the prosthetic device 50 fires.
[0073]
The safety latch member 88 is configured to pivot about a pivot pin 330 that extends between the handle portion 81 below the safety release bracket 312. The safety latch member 88 includes a bar 332 that is horizontally disposed below the safety release bracket 312 in the latched position (FIG. 12). When the anvil gap is outside, that is, beyond the predetermined range of the prosthetic device 50, the square plate 314 of the safety release bracket 312 covers the crosspiece 332 of the safety latch member 88 and the safety latch is disengaged from the staple operating lever 86. prevent. When the anvil gap is within the predetermined range, the safety release bracket 312 is pulled and the crosspiece 332 of the safety latch member 88 is released from the engagement with the rectangular plate 314 of the safety release bracket 312. The safety latch member 88 can be pivoted to the unlatched position to operate the staple operating lever 86 (FIG. 13).
[0074]
As shown in FIG. 23, the staple operating lever 86 includes a trigger arm 340 which is covered with a plastic covering 342 and connected to a dependent core 83 of the handle portion 81 by a shaft rotation pin 344 and bent by one member. The trigger spring 346 is attached to the shaft rotation pin 344 and normally presses the staple operating lever 86 to the non-cooperating position (FIG. 12). The trigger arm 340 includes a pair of bars 348 engaged with a safety latch member 88 in the latched position. The trigger arm 340 also includes a pair of actuator fingers 350 for operating the compression member 92 of the prosthetic device 50. The trigger arm 340 is coupled to the compression member 92 by a firing clip 352 that fits over the cylindrical extension 206 and engages an offset 208 at the mesial end of the compression member 92. Firing clip 352 includes a hole 354 for receiving pin 210 on cylindrical extension 206. The firing clip 352 is also provided with indentations 356 on opposite sides thereof for receiving the actuator fingers 350 of the trigger arm 340. Firing clip 352 is provided to transmit movement in both the centrifugal and mesial directions from actuator finger 350 to compression member 92. The notch 356 prevents the actuator finger 350 from expanding under the load to bypass the arm 355 and from bypassing the core 358 during towing.
[0075]
Referring to FIG. 45, a removable trocar 180 is provided for use with the anvil assembly 100. The removable trocar 180 includes a trocar body 181 having a trocar tip 182 that is long and generally cylindrical and has a trapezoidal shape at its mesial end. A pair of recessed recesses 183 are formed on opposing side surfaces of the cylindrical body 181, which facilitates handling of the trocar 180. The cylindrical body 181 has a first conical and tapered portion 184 that connects to a long portion 185 of reduced diameter, which ends with a narrow cylindrical neck 187. Continuing to a tapered portion 186 in shape. A long head 188 is provided at the distal end of the cylindrical neck 187. The head 188 includes a pair of mesial shoulders 189 for engaging the claws 116 of the retention clip 110 when the claws 116 of the trocar 180 are inserted between the retention clips 110. The head 188 has a pair of flat opposing side surfaces 190 disposed around it at an angle of 90 degrees with respect to the recessed finger rest 183 of the trocar body 181.
[0076]
As shown in FIG. 46, when the removable trocar 180 is inserted into the hollow anvil shaft 104, the sleeve 105 at the mesial end of the anvil shaft 104 tapers into the conical shape 184 of the trocar 180. Engage with. In the boosted position of the trocar 180 with the flat side 190 oriented vertically, the head 188 is gripped by the claws of the retaining clip 110 and the claws engage the shoulder 189 as shown in FIG. The needle 180 is held inside the anvil shaft 104. In order to release the trocar 180 from the anvil shaft 104, the trocar body 181 is rotated 90 degrees toward the reducing position shown in FIG. 47, and the flat side surface 190 of the head 188 is moved to the nail 116 like the holding clip 110. To match. When the trocar 180 is pulled out of the anvil shaft 104, if the position of the claw 116 and the flat side surface 190 are aligned, the trocar 180 moves the flat side surface 190 of the head 188 in a direction perpendicular to the claw 116. The holding clip 110 can be disengaged with less force than the force required to pull the trocar 180 toward. When directed to the reduced position, the trocar 180 can be inserted into the anvil shaft 104 and engaged with the retaining clip 110 with a small force, for example, using an endoscope clamp.
[0077]
Referring to FIG. 20, the support shaft assembly 70 is offset inward at the distal end and has a diameter having an upstanding annular collar 362 that positions an adjacent annular groove 364 on the tubular extension 360. Provide a small cylindrical extension. Similarly, the housing tubular spigot 64 includes a mesial extending sleeve 370 with one or more upstanding annular collars 372 separated by adjacent annular grooves 374. The sleeve 370 is slightly larger in diameter and is configured to slidably receive the cylindrical extension 360 therein. The extension 360 has a longitudinal slot 366 that longitudinally aligns the housing 61 with the support shaft assembly 70 in order to circumferentially align it with the support shaft assembly 70. Provides a key path to accept 376. The purpose of the annular collars 362 and 372 and the annular grooves 364 and 374 provide a series of alternating protrusions and indentations adjacent to the connection point between the cylindrical housing 61 and the support shaft assembly 70, above which The connection tube 72 is deformed to provide a connection between the housing 61 and the support shaft assembly 70 so that the connection tube 72 is not strong and does not slide.
[0078]
To facilitate connection of the support shaft assembly 70 to the actuator and handle assembly 80, the mesial end of the support shaft assembly 70 has a small diameter and a cylindrical extension provided with an annular collar 382 at the mesial end. An offset for positioning the portion 380 is provided. An annular collar 382 is received in an annular recess 384 (FIG. 23) inside each handle portion 81. A pair of guide rods 386 (only one is shown in FIG. 23) are formed in positions facing each other in the diametrical direction within the annular recess 384 of the handle portion 81. The guide bar 386 is received in a pair of holes 388 (FIG. 20) formed at positions opposed to the diameter direction of the collar 382. Each handle portion 81 includes a semi-cylindrical sleeve 390 at the distal end that receives a cylindrical extension 380 at the mesial end of the support shaft assembly 70. The receiving tube 76 (FIG. 5) covers a connection point between the support shaft assembly 70 and the actuator handle assembly 80, and is deformed radially inward to thereby support the shaft assembly 70 and the actuator handle assembly 80. Provides a strong connection.
[0079]
The surgical annular anastomosis prosthesis 50 can be used to perform an intravascular anastomosis such that two tissue pieces are connected together by a row of staples. As an example, a method for end-to-end anastomosis of the cut ends of a pair of lumen tissues using a plurality of surgical staples arranged in a ring-like array around the lumen between the tissue cutting planes is described in detail. Yes. In preparation for the anastomosis, a suture is passed through the luminal tissue to be anastomosed with a purse string suture. For example, as shown in FIG. 2, two tubular tissue cutting surfaces 52 and 54 have purse string sutures 56 and 58, respectively, adjacent to the open ends of the tubular tissue cutting surfaces 52 and 54. Get ready by passing through the ceremony.
[0080]
When the surgical procedure is performed using a double purse string suture technique, with the anvil assembly 100 attached to the ligation head assembly 60 and fully closed, for example, the prosthetic device 50 to the anal opening of the case. Is inserted into the first tubular tissue cutting surface 52. Prior to insertion of the prosthetic device 50 into the case, the adjustment knob 82 is rotated clockwise to pull the trocar 73 into the support tube 66, and the anvil 102 is bitten into the needle holder 68. The ligation head assembly 60 is placed adjacent to the purse string suture end of the tubular tissue cutting surface 52. The adjustment knob 82 is then rotated counterclockwise to advance the control rod 300 and tension member 92 until the trocar 73 is fully advanced, thereby moving the anvil assembly 100 to its fully open position. (FIG. 2). When the trocar 73 is fully advanced, the purse string suture end of the tubular tissue cutting surface 52 falls together toward the cylindrical trocar body 130 by pulling and tightening the purse string suture 56. The purse sewn tissue falls toward the trocar main body 130, and the purse string suture 56 is ligated to fix the tissue to the trocar main body 130.
[0081]
Tissue is pulled together toward the anvil shaft 104 by inserting the anvil assembly 100 into the purse string suture end of the tubular tissue cutting surface 54 and pulling and tightening the purse string suture 58. The purse string sutured tissue is preferably drawn toward the anvil shaft 104 into the ligature protrusion adjacent in the centrifugal direction of the portion 152 standing upright on the peripheral portion on the anvil shaft 104, and the purse string suture thread 58 is tightened together. If desired, the anvil assembly 100 can be detached from the trocar 73 to facilitate insertion of the anvil assembly 100 into the tubular tissue cutting surface 54. After the purse string suture end of the tubular tissue cutting surface 54 is ligated to the anvil shaft 104 by the purse string suture thread 58, the anvil assembly 100 is reattached to the trocar 73.
[0082]
After ligating the purse-string suture ends of the tubular tissue cutting surfaces 52 and 54, the adjustment knob is rotated clockwise to draw the trocar 73 into the support tube 66 and move the anvil 102 toward the needle holder 68. When the trocar 73 is retracted, the trocar body 130 slides in the mesial direction through the purse string suture end of the tissue cutting surface 52, and the anvil shaft 104 is pulled into the support tube 66 through the purse string tissue. Chamfered portions 126 and 144 (FIG. 37) facilitate movement of the transition between trocar body 130 and sleeve 105 via the purse string suture tissue. As described above, since the thin edge 128 of the peripheral portion of the sleeve 105 is slightly smaller in diameter than the peripheral edge 142 of the trocar body 130, the portion 144 where the purse string suture tissue is chamfered when the trocar 73 is pulled. Can be easily transferred to the chamfered portion 126. As the anvil shaft 104 enters the support tube 66, the outer filament 154 (FIG. 38) on the anvil shaft 104 is received and guided between the inner filament 156 (FIG. 34) of the support tube 66, and the anvil 102. Is aligned with the needle holder 68 at the periphery. An annular edge 67 of the support tube 66 presses the purse string suture tissue against the transition between the trocar 73 and the anvil shaft 104 and against the external filament 154. Also, the upstanding peripheral portion 152 is closely received by the support tube 66 to align the anvil 102 with the needle holder 68 on the shaft. As a result of the alignment at the peripheral portion and the shaft, the staple forming groove 108 (FIG. 44) of the anvil 102 is precisely aligned with the staple receiving slot 65 (FIG. 30) of the needle holder 68.
[0083]
When the gap between the anvil 102 and the needle holder 68 is set to produce a desired staple height that is within the operating range of the prosthetic device 50, the safety latch member 88 pivots clockwise to 13, the engagement of the staple operating lever 86 is released. The prosthetic device 50 performs ligation by grasping the needle operating lever 86 and rotating it clockwise and moving the needle operating lever 86 to its operating position as shown in FIG. As a result, the actuator finger 350 of the trigger arm 340 ejects the firing clip 352 in the centrifugal direction to advance the compression member 92 longitudinally along the support shaft assembly 70. The compression member 92 advances the staple ejecting device 62 to move the ejecting finger 63 in the centrifugal direction to the staple receiving slot 65 so that the staple 90 is fitted. The compression member 92 transmits the necessary movement and compression force from the trigger arm 340 to the staple ejector 62 and ejects the staple 90 from the needle holder 68 into the tissue and further toward the anvil 102. As shown in FIG. 10, each binding needle 90 is shaped into a B shape so as to bind the tissue cutting surfaces 52 and 54 together. Further, the annular knife 69 is pushed out by the staple ejector, and the tissue is cut toward the backing washer 160. As shown in FIG. 9, the annular knife 69 divides the backing washer 160 into two annular sections.
[0084]
After the tissue is bound and cut, the staple operating lever 86 is pushed to the non-operating position by the spring 346 (FIG. 13). The actuator finger 350 of the trigger arm 340 pivots counterclockwise to move the firing clip 352 and compression member 92 in the mesial direction as seen in FIG. As a result, the staple ejector 62 and the annular knife 69 connected to the compression member 92 by the positioning finger 230 are pulled into the ligation head assembly 60. When a staple, tissue, or other residue is captured between the needle holder 68 and the ejection finger 63, the ligation head is pulled from the tissue by pulling the staple ejection device 62 before removing the prosthetic device 50 from the case. The assembly 60 is released. If an increase in force is required, the staple actuating lever 86 can be manually reversed to its inoperative position to pull the staple ejector 62.
[0085]
Next, the tissue bound between the anvil 102 and the needle holder 68 is released by rotating the adjustment knob 82 counterclockwise to advance the anvil assembly 100 away from the ligation head assembly 60. . The anvil 102 can be moved through the lumen tissue by handling the bound tissue in an appropriate manner and sliding it through the lumen in which the anvil is bound. Thereafter, the prosthetic device 50 is removed from the case leaving behind a closed lumen between the cylindrical tissue cutting surfaces 52 and 54.
[0086]
  A preferred embodiment is shown below.
(I) A guide balloon that can be attached to the distal end side of the insertion portion of an automatic anastomosis instrument that inserts a long insertion portion into a living tissue and performs anastomosis between living tissues,
A guide balloon comprising: a balloon part that is deformable when inflated; and a base part that supports the balloon part and is engageable with a distal end side of the insertion part of the automatic anastomosis instrument.
(1) A pump for supplying or exhausting gas via a tube is connected to the balloon portion.Embodiment (I)The described guidance balloon.
(2) The balloon portion has a tapered shape.Embodiment (I)The described guidance balloon.
(3) The guide balloon according to the embodiment (2), wherein the balloon portion has a conical shape.
(4) The balloon section has a plurality of rooms, and the front room is compressed independently of the rear room.Embodiment (I)The described guidance balloon.
(5) Of the balloon portion, the front chamber and the rear chamber are in contact with each other through a partition wall, and the partition wall has a valve that allows only gas movement from the front chamber to the rear chamber. The guide balloon of the embodiment (4).
(II) An automatic anastomosis instrument for inserting an elongated insertion portion into a living tissue and performing an anastomosis between living tissues,
A guide balloon that can be mounted on the distal end side of the insertion portion, the guide balloon being deformable when inflated, and a base portion that supports the balloon portion and is engageable with the distal end side of the insertion portion; An automatic anastomosis device characterized by comprising:
(6) A pump for supplying or exhausting gas via a tube is connected to the balloon portion.Embodiment (II)The automatic anastomosis machine described.
(7) The maximum diameter of the balloon part is larger than the maximum diameter of the insertion part.Embodiment (II)The automatic anastomosis machine described.
(8) The balloon portion has a tapered shape.Embodiment (II)The automatic anastomosis machine described.
(9) The balloon portion has a conical shape.Embodiment (II)The automatic anastomosis machine described.
(10) The balloon section has a plurality of rooms, and the front room is compressed independently of the rear room.Embodiment (II)The automatic anastomosis machine described.
(11) Of the balloon portion, the front chamber and the rear chamber are in contact with each other via a partition wall, and the partition wall has a valve that allows only gas movement from the front chamber to the rear chamber. The automatic anastomosis device according to the embodiment (10).
(III) An automatic anastomosis instrument for inserting an elongated insertion portion into a living tissue and performing an anastomosis between living tissues,
A guide balloon integrally provided on the distal end side of the insertion portion, the guide balloon having a balloon portion that can be deformed when inflated, and a gas flow tube connected to the balloon portion. Anastomosis device.
(12) The balloon portion is connected to a pump for supplying or exhausting gas via the gas flow tube.Embodiment (III)The automatic anastomosis machine described.
(13) The maximum diameter of the balloon part is larger than the maximum diameter of the insertion part.Embodiment (III)The automatic anastomosis machine described.
(14) The balloon portion has a conical shape.Embodiment (III)The automatic anastomosis machine described.
(15) The balloon portion has a conical shape.Embodiment (III)The automatic anastomosis machine described.
(16) The balloon section has a plurality of rooms, and the front room is compressed independently of the rear room.Embodiment (III)The automatic anastomosis machine described.
(17) In the balloon portion, the front chamber and the rear chamber are in contact with each other via a partition wall, and the partition wall has a valve that allows only gas movement from the front chamber to the rear chamber. The automatic anastomosis device according to the embodiment (16).
[0087]
【The invention's effect】
As described above, according to the present invention, by attaching a guide balloon having a balloon part that can be deformed when inflated to the distal end side of the insertion part of the automatic anastomosis instrument, It is possible to facilitate insertion into the living tissue and prevent damage to the living tissue.
[Brief description of the drawings]
FIGS. 1A and 1B are schematic front views showing an embodiment of a guide balloon of the present invention, and FIG. 1A shows a state before inflation of a balloon portion in the guide balloon. (B) shows the state of the balloon portion of the guide balloon when inflated.
FIGS. 2A to 2C are schematic front views showing an embodiment of the guide balloon of the present invention, and FIG. 2D is a plan view of FIG. (E) is the fragmentary sectional view which notched the part which shows typically the state which inserts the automatic anastomosis instrument equipped with the guide balloon shown to (c) in a biological tissue.
FIGS. 3A to 3C are cross-sectional views showing the main parts of an embodiment of the automatic anastomosis instrument of the present invention. FIGS.
4 (a) to 4 (c) are cross-sectional views showing the main part of another embodiment of the automatic anastomosis device of the present invention, and FIG. 4 (d) schematically shows the overall configuration of the present embodiment. It is a schematic front view shown.
FIG. 5 is a perspective view of a surgical prosthesis device made in accordance with the present invention, illustrating the overall appearance of the device.
6 shows a longitudinal section of the ligation head assembly of the apparatus of FIG. 5 with the anvil fully open.
FIG. 7 is an enlarged longitudinal cross-sectional view of the ligation head assembly showing the anvil in a partially closed position.
FIG. 8 shows the anvil in a closed position in an enlarged longitudinal cross-sectional view of the ligation head assembly.
FIG. 9 is a longitudinally enlarged cross-sectional view of the ligation head assembly, showing the staple ejection device in the injection position.
FIG. 10 is a partially enlarged view of a staple formed on an anvil.
FIG. 11 is an enlarged longitudinal sectional view showing a shaft assembly of the prosthetic device.
12 is a longitudinal longitudinal cross-sectional view of the actuator and handle assembly of the prosthetic device of FIG. 1 in the locked position.
FIG. 13 is a longitudinal cross-sectional view of the actuator handle assembly in the unlocked position.
FIG. 14 is a longitudinal cross-sectional view of the actuator handle assembly in an injection position.
FIG. 15 is a perspective view of the safety release member in the latched position.
FIG. 16 is a perspective view of the safety release member in the latch release position.
FIG. 17 is a perspective view showing the centrifugal position of the indicator lever activated by the safety release member.
FIG. 18 is a perspective view showing a mesial position of an indicator lever.
FIG. 19 is a partially enlarged view of an indicator window at the top of the actuator handle assembly.
FIG. 20 is an exploded perspective view of a ligation head assembly and a support shaft of the prosthetic device.
FIG. 21 is an enlarged perspective view showing a tension member and a compression member installed in a support shaft of the prosthetic device.
22 is a cross-sectional view of the support shaft assembly taken along line 24-24 of FIG.
FIG. 23 is an exploded perspective view of members of the actuator / handle assembly.
FIG. 24 is a partial cutaway side view of a compression member of a shaft assembly.
FIG. 25 is a mesial end view of the compression member.
26 is a cross-sectional view of the compression member taken along line 26-26 of FIG. 24. FIG.
FIG. 27 is a centrifugal end view of the compression member.
FIG. 28 is a partial cross-sectional view enlarged in the longitudinal direction of the distal end face of the compression member.
FIG. 29 is a bottom view of the compression member.
FIG. 30 is an exploded perspective view of the distal end of the needle holder, the staple ejection device, and the compression member.
FIG. 31 is an end view of the staple ejection device.
32 is a longitudinal sectional view of the staple ejector taken along line 32-32 in FIG. 31. FIG.
FIG. 33 is a side view of the staple ejection device.
FIG. 34 is a longitudinal sectional view of a casing for a ligation head assembly.
FIG. 35 is a perspective view of the anvil of the prosthetic device, showing the anvil shaft removed from the trocar included in the ligating head assembly.
FIG. 36 is an enlarged partial cross-sectional side view showing the anvil shaft attached to the trocar.
FIG. 37 is a partially enlarged view showing the connection between the anvil shaft and the trocar.
FIG. 38 is an exploded perspective view showing a pair of retaining clips and backing washers included in the anvil assembly.
FIG. 39 is an enlarged longitudinal sectional view of an anvil assembly without a washer.
FIG. 40 is a cross-sectional view of the anvil assembly with the retaining clip removed.
FIG. 41 is a bottom view of a backing washer of an anvil assembly.
FIG. 42 is a side view of a backing washer.
43 is a cross-sectional view of a backing washer taken along line 42-42 in FIG. 41. FIG.
FIG. 44 is a partial cross-sectional enlarged perspective view showing holding of a backing washer by an anvil.
FIG. 45 is a perspective view of a removable trocar for use with an anvil assembly.
FIG. 46 is a cross-sectional view showing a removable trocar inserted into the anvil shaft in the boost position.
47 is a cross-sectional view showing a removable trocar inserted into an anvil shaft in a reduced position. FIG.
[Explanation of symbols]
1 Information balloon
2 base
3 Balloon part
4 tubes
5 Pump
50 Prosthetic device (automatic anastomosis device)
60 Ligating head assembly
61 housing
62 Stitch ejection device
63 Multiple fingers
64 Tubular plug
68 Needle holder
69 Ring knife or scissors
70 Support shaft assembly
72 Receptacle tube or sleeve
74 Extension
80 Actuator handle assembly
82 Adjustment knob
84 Indicator
86 Stitch needle operating lever
87 scale
88 Latch member
90 staples
100 anvil assembly

Claims (10)

長尺の挿入部を生体組織内に挿入して生体組織間の吻合を行う自動吻合器の前記挿入部の先端に装着可能な案内バルーンであって、
膨張時に変形可能なバルーン部と、該バルーン部を支持し、かつ前記自動吻合器の前記挿入部の先端に係合可能な基部とを有し、前記バルーン部は、複数の部屋を有し、前記挿入部の先端に位置する前方の部屋は、該前方の部屋より前記先端から離れた後方の部屋とは独立して圧縮されるように構成されており、前記前方の部屋と前記後方の部屋とは、隔壁を介して接しており、該隔壁は前記前方の部屋から前記後方の部屋への気体の移動のみを許す弁を有していることを特徴とする案内バルーン。
A guide balloon that can be attached to the distal end of the insertion portion of an automatic anastomosis instrument that inserts a long insertion portion into a biological tissue and performs anastomosis between the biological tissues,
A balloon part that is deformable when inflated; and a base part that supports the balloon part and is engageable with a distal end part of the insertion part of the automatic anastomosis instrument. The balloon part has a plurality of chambers. The front room located at the distal end of the insertion part is configured to be compressed independently of the rear room away from the front part from the front room, and the front room and the A guide balloon , which is in contact with a rear chamber through a partition, and has a valve that allows only gas to move from the front chamber to the rear chamber .
請求項1記載の案内バルーンにおいて、前記バルーン部は先細り形状を成している、案内バルーン。  The guide balloon according to claim 1, wherein the balloon portion has a tapered shape. 請求項記載の案内バルーンにおいて、前記バルーン部は円錐形状を成している、案内バルーン。 3. The guide balloon according to claim 2 , wherein the balloon portion has a conical shape. 請求項1記載の案内バルーンにおいて、前記バルーン部には、チューブを介して気体を供給又は排気するポンプが接続されている、案内バルーン。  2. The guide balloon according to claim 1, wherein a pump for supplying or exhausting a gas is connected to the balloon portion through a tube. 長尺の挿入部を生体組織内に挿入して生体組織間の吻合を行う自動吻合器であって、
前記挿入部の先端に装着可能な案内バルーンを含み、該案内バルーンは、膨張時に変形可能なバルーン部と、該バルーン部を支持し、かつ前記挿入部の先端に係合可能な基部とを有し、前記バルーン部は、複数の部屋を有し、前記挿入部の先端に位置する前方の部屋は、該前方の部屋より前記先端から離れた後方の部屋とは独立して圧縮されるように構成されており、前記前方の部屋と前記後方の部屋とは、隔壁を介して接しており、該隔壁は前記前方の部屋から前記後方の部屋への気体の移動のみを許す弁を有していることを特徴とする自動吻合器。
An automatic anastomosis instrument that inserts a long insertion portion into a living tissue and performs an anastomosis between living tissues,
A guide balloon attachable to a distal end portion of the insertion portion, the guide balloon being deformable when inflated, and a base portion supporting the balloon portion and being engageable with the distal end portion of the insertion portion; The balloon portion has a plurality of chambers, and the front chamber located at the distal end portion of the insertion portion is compressed independently of the rear chamber away from the distal end portion from the front chamber. The front room and the rear room are in contact with each other via a partition wall, and the partition wall is a valve that allows only gas to move from the front room to the rear room. An automatic anastomosis device characterized by comprising:
長尺の挿入部を生体組織内に挿入して生体組織間の吻合を行う自動吻合器であって、
前記挿入部の先端に一体に設けられた案内バルーンを含み、該案内バルーンは、膨張時に変形可能なバルーン部と、該バルーン部に接続された気体流通チューブとを有し、前記バルーン部は、複数の部屋を有し、前記挿入部の先端に位置する前方の部屋は、該前方の部屋より前記先端から離れた後方の部屋とは独立して圧縮されるように構成されており、前記前方の部屋と前記後方の部屋とは、隔壁を介して接しており、該隔壁は前記前方の部屋から前記後方の部屋への気体の移動のみを許す弁を有していることを特徴とする自動吻合器。
An automatic anastomosis instrument that inserts a long insertion portion into a living tissue and performs an anastomosis between living tissues,
A guide balloon integrally provided at a distal end portion of the insertion portion, the guide balloon having a balloon portion that is deformable when inflated, and a gas flow tube connected to the balloon portion; has a plurality of chambers, the front of the room located at the distal end of the insertion portion is configured to be compressed independently of the rear of the room apart from the distal end than said front room The front room and the rear room are in contact with each other through a partition wall, and the partition wall has a valve that allows only gas to move from the front room to the rear room. An automatic anastomosis device.
請求項またはに記載の自動吻合器において、前記バルーン部は先細り形状を成している、自動吻合器。The automatic anastomosis instrument according to claim 5 or 6 , wherein the balloon portion has a tapered shape. 請求項記載の自動吻合器において、前記バルーン部は円錐形状を成している、自動吻合器。The automatic anastomosis instrument according to claim 7 , wherein the balloon portion has a conical shape. 請求項またはに記載の自動吻合器において、前記バルーン部には、チューブを介して気体を供給又は排気するポンプが接続されている、自動吻合器。The automatic anastomosis device according to claim 5 or 6 , wherein a pump for supplying or exhausting a gas through a tube is connected to the balloon portion. 請求項またはに記載の自動吻合器において、前記バルーン部の最大径は前記挿入部の最大径より大きい、自動吻合器。The automatic anastomosis instrument according to claim 5 or 6 , wherein a maximum diameter of the balloon part is larger than a maximum diameter of the insertion part.
JP35340598A 1998-12-11 1998-12-11 Automatic anastomosis instrument and guide balloon attachable to the anastomosis instrument Expired - Fee Related JP4233656B2 (en)

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