JP2024505891A - 積層駆動部材を備えた外科用ステープリング・デバイス - Google Patents

積層駆動部材を備えた外科用ステープリング・デバイス Download PDF

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JP2024505891A
JP2024505891A JP2023545281A JP2023545281A JP2024505891A JP 2024505891 A JP2024505891 A JP 2024505891A JP 2023545281 A JP2023545281 A JP 2023545281A JP 2023545281 A JP2023545281 A JP 2023545281A JP 2024505891 A JP2024505891 A JP 2024505891A
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ジェイコブ シー. バリル,
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コヴィディエン リミテッド パートナーシップ
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B17/07207Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00477Coupling
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00477Coupling
    • A61B2017/00486Adaptors for coupling parts with incompatible geometries
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
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    • A61B2017/00831Material properties
    • A61B2017/0084Material properties low friction
    • A61B2017/00845Material properties low friction of moving parts with respect to each other
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B2017/07214Stapler heads
    • A61B2017/07257Stapler heads characterised by its anvil
    • A61B2017/07264Stapler heads characterised by its anvil characterised by its staple forming cavities, e.g. geometry or material
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B2017/07214Stapler heads
    • A61B2017/07271Stapler heads characterised by its cartridge
    • AHUMAN NECESSITIES
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    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B2017/07214Stapler heads
    • A61B2017/07285Stapler heads characterised by its cutter
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28Surgical forceps
    • A61B17/29Forceps for use in minimally invasive surgery
    • A61B2017/2926Details of heads or jaws
    • A61B2017/2927Details of heads or jaws the angular position of the head being adjustable with respect to the shaft

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Abstract

外科用ステープリング・デバイスは、細長い本体と、関節のために細長い本体に枢動可能に連結されたツール・アセンブリと、駆動アセンブリとを含む。駆動アセンブリは、ツール・アセンブリからステープルを射出し、ツール・アセンブリの顎部の間に締め付けられた組織を切断するために、ツール・アセンブリに関連して動くことができる。駆動アセンブリは、可撓性駆動ビームに連結された作業端を含む。可撓性駆動ビームは、金属コア部材及びコア部材の両側に固定された外部積層を含む。外部積層は、外科用ステープリング・デバイスの発射力を最小化するために、コア部材より低い摩擦係数を有する材料から形成される。

Description

本開示は、一般に可撓性駆動ビームを含む駆動アセンブリを備えた外科用ステープリング・デバイスに関し、より詳細には、関節ツール・アセンブリ及び可撓性駆動ビームを有する駆動アセンブリを含む、外科用ステープリング・デバイスに関する。
細長い本体及び細長い本体上に支持されたツール・アセンブリを含む、内視鏡ステープリング・デバイスは周知である。典型的には、ツール・アセンブリは、ツール・アセンブリが関節位置と非関節位置との間を枢動できるように、細長い本体の長手方向軸に垂直な枢軸を画定する枢動部材により、細長い本体の遠位部に連結される。このようなステープリング・デバイスは、ツール・アセンブリがツール・アセンブリからステープルを射出するために発射される時に、枢軸を中心に曲がることができる可撓性駆動ビームを有する駆動アセンブリを含む。
内視鏡外科的処置の間に体腔内の組織により良く接近するために、90度の範囲にわたるツール・アセンブリの関節が望ましい。しかしこのような高角度に関節のあるツール・アセンブリでステープリング・デバイスを発射することにより、ステープリング・デバイスを発射するために必要な発射力が大きく増加する。
ステープリング・デバイスのツール・アセンブリが関節位置にある時に、ステープリング・デバイスを発射するために必要な発射力を最小化することができるステープリング・デバイスが、当技術分野で引き続き必要とされている。
本開示は、一般に細長い本体と、関節のために細長い本体に枢動可能に連結されたツール・アセンブリと、駆動アセンブリとを含む、外科用ステープリング・デバイスに関する。駆動アセンブリは、可撓性駆動ビームに連結された作業端を含む。可撓性駆動ビームは、金属コア部材及びコア部材の両側に固定された外部積層を有する。外部積層は、外科用ステープリング・デバイスの発射力を最小化するために、コア部材より低い摩擦係数を有する材料から形成される。
本開示の態様は、作業端を含む駆動アセンブリ及び駆動ビーム・アセンブリを対象とする。作業端は、Iビーム構成を有し、第1のビーム、第2のビーム、及び第1のビームを第2のビームに相互接続する垂直支柱を含む。駆動ビーム・アセンブリは、コア部材及び外部積層を含む。コア部材は、平坦な側壁、頂壁、及び底壁を有する、可撓性ビームを含む。可撓性ビームは、作業端に固定された遠位部を有し、外部積層は、可撓性ビームの平坦な側壁に沿って支持される。コア部材は金属から形成され、外部積層は、コア部材より低い摩擦係数を有する材料から形成される。
本開示の他の態様は、アダプタ・アセンブリ、ツール・アセンブリ、及び駆動アセンブリを含む、ステープリング・デバイスを対象とする。アダプタ・アセンブリは長手方向軸を画定し、近位部及び遠位部を有する。ツール・アセンブリは、ツール・アセンブリが枢軸を中心に非関節位置と関節位置との間で関節運動ができるように、長手方向軸に垂直な枢軸を画定する枢動部材によりアダプタ・アセンブリの遠位部上に支持される。ツール・アセンブリは、開位置とクランプ位置との間で互いに関連して動くことができる、アンビル・アセンブリ及びカートリッジ・アセンブリを含む。駆動アセンブリは、ツール・アセンブリを作動させるために後退位置と前進位置との間でツール・アセンブリに関連して動くことができ、作業端及び駆動ビーム・アセンブリを含む。作業端は、Iビーム構成を有し、第1のビーム、第2のビーム、及び第1のビームを第2のビームに相互接続する垂直支柱を含む。駆動ビーム・アセンブリは、コア部材及び外部積層を含む。コア部材は、平坦な側壁、頂壁、及び底壁を有する、可撓性ビームを含む。可撓性ビームは、作業端に固定された遠位部を有し、外部積層は、可撓性ビームの平坦な側壁に沿って支持される。コア部材は金属から形成され、外部積層は、コア部材より低い摩擦係数を有する材料から形成される。
本開示の態様では、外部積層は、ポリテトラフルオロエチレンから形成される。
本開示の一部の態様では、コア部材は、ステンレス鋼から形成される。
本開示の特定の態様では、外部積層は、空洞及び頂壁と反対側の開口を画定するU字形積層アセンブリを形成するために、頂壁によって一緒に連結される。
本開示の態様では、空洞は、開口を通してコア部材を受領する。
本開示の一部の態様では、コア部材の底壁はノッチを画定し、外部積層の1つは、ノッチと位置合わせされ、開口の中に延在する指部を含む。
本開示の特定の態様では、指部は、U字形積層アセンブリをコア部材上に固定するために、U字形積層アセンブリがコア部材上に位置付けられた時に、ノッチ内にスナップ嵌合式に受領される。
本開示の一部の態様では、コア部材は開口を画定し、外部積層のそれぞれは、コア部材内の開口と位置合わせされる開口を画定する。
本開示の特定の態様では、外部積層内の開口は、コア部材内の開口内に受領される内方に突出するリブによって結び付けられ、外部積層上の内方に延在するリブは、外部積層をコア部材の両側に固定するために、コア部材の開口内に一緒に固定される。
本開示の態様では、外部積層は、コア部材を受領する空洞を画定する長方形の積層アセンブリを形成するために、頂壁及び底壁と一緒に連結される。
本開示の一部の態様では、コア部材の頂壁及び底壁のそれぞれは突起を含み、長方形の積層アセンブリの頂壁及び底壁のそれぞれは、長方形の積層アセンブリをコア部材上に固定するために、突起の1つを受領する切欠きを画定する。
本開示の特定の態様では、外部積層のそれぞれは、切欠きを画定する遠位延長部を含み、駆動アセンブリの作業端は、長方形の積層アセンブリをコア部材に固定するために、切欠き内に受領された突起を含む。
本開示の態様では、外部積層及びコア部材は開口を画定し、長方形の積層アセンブリは、開口を通って延在するピン、ダボ、リベット、及びグロメットから構成される群から選択された締結具でコア部材に固定される。
本開示の一部の態様では、外部積層のそれぞれは開口を画定し、突起を含み、コア部材は、外部積層の突起を受領する細長いスロットを含む。
本開示の特定の態様では、外部積層のそれぞれの突起は、外部積層を互いに、及びコア部材に固定するために、外部積層の他方の開口内に受領される。
本開示の態様では、コア部材内の細長いスロットは、外部積層とコア部材との間の相対移動を促進する。
他の態様、特徴、及び利点は、説明、図面、及び続く特許請求の範囲から明らかになろう。
本開示の様々な態様及び特徴は、図面を参照して説明され、同じ番号は、複数の図のそれぞれにおける同一又は対応する要素を示す。
本開示の態様による外科用ステープリング・デバイスの遠位端からの側面斜視図であり、ステープリング・デバイスのツール・アセンブリは締め付けられた非関節位置にあり、締め付けられた関節位置にあるツール・アセンブリが仮想線で示されている。 図1に示された外科用ステープリング・デバイスの再荷重アセンブリの側面斜視図であり、ツール・アセンブリは非関節の開位置にある。 図2に示された再荷重アセンブリの側面斜視部分分解図であり、ツール・アセンブリは開位置に示されている。 図3に示されたステープリング・デバイスの駆動アセンブリの側面斜視分解図である。 図4の5-5断面線に沿って切り取った断面図である。 図3に示された詳細を示した領域の拡大図である。 外部積層が駆動ビームの上に位置付けられた際の、図6に示された駆動アセンブリの駆動ビーム及び外部積層を通って切り取った断面図である。 図6の8-8断面線に沿って切り取った、駆動アセンブリを通る断面図である。 図8の9-9断面線に沿って切り取った断面図である。 図1に示されたステープリング・デバイスのツール・アセンブリの平面図であり、ツール・アセンブリは締結位置にあり、駆動アセンブリは一部後退位置にある。 図1に示されたステープリング・デバイスのツール・アセンブリの平面図であり、ツール・アセンブリは締結位置にあり、駆動アセンブリは前進位置にある。 図1に示された外科用ステープリング・デバイスの駆動アセンブリの代替版の側面斜視図である。 図12の13-13断面線に沿って駆動アセンブリを通って切り取った断面図である。 図12に示された駆動アセンブリの分解図である。 図1に示された外科用ステープリング・デバイスの駆動アセンブリの別の代替版の遠位部の側面斜視図である。 図15に示された駆動アセンブリの遠位部の側面図であり、部品が分離している。 外部積層が駆動ビームの上に位置付けられた際の、図15の17-17断面線に沿って駆動アセンブリを通って切り取った断面図である。 図15の18-18断面線に沿って駆動アセンブリを通って切り取った断面図であり、外部積層は駆動ビームの上に固定されている。 図1に示された外科用ステープリング・デバイスの駆動アセンブリの尚別の代替版の遠位部の側面斜視図である。 図19に示された駆動アセンブリの遠位部の側面図であり、部品が分離している。 図1に示された外科用ステープリング・デバイスの駆動アセンブリの別の代替版の部品が分離した状態の側面斜視図である。 図1に示された外科用ステープリング・デバイスの駆動アセンブリの別の代替版の部品が分離した状態の側面斜視図である。 組み立てられた図22に示された駆動アセンブリの遠位部の側面斜視図である。 図23の24-24断面線に沿って切り取った断面図である。 図1に示された外科用ステープリング・デバイスの駆動アセンブリの別の代替版の一部の断面図である。 図1に示された外科用ステープリング・デバイスの駆動アセンブリの尚別の代替版の一部の断面図である。
次に開示された外科用ステープリング・デバイスについて、同じ参照番号が複数の図のそれぞれにおいて同一又は対応する要素を示す図面を参照して詳細に記載される。しかし本明細書に含まれる本開示の態様は、本開示の例に過ぎず、様々な形に具現化されてもよいことを理解されたい。周知の機能又は構築は、不要な詳細で本開示を不明瞭にすることを避けるために、詳細には記載されていない。従って本明細書に開示された特定の構築及び機能の詳細は、限定と解釈されるべきではなく、特許請求の範囲のための根拠として、及び事実上あらゆる適切な詳細の構築において本開示を様々に利用するために当業者に教示するための代表的な根拠としてのみ解釈されるべきである。加えて、正面、背面、上部、下部、頂部、底部などの方向用語、及び類似用語は、記載を理解する支援をするために使用され、本開示を限定することを意図するものではない。
本記載では、用語「近位」は、デバイスを使用中にその意図する目的のために医療従事者に近いデバイスのその部分を概して指すために使用される一方で、用語「遠位」は、デバイスを使用中にその意図する目的のために医療従事者から遠いデバイスのその部分を概して指すために使用される。加えて、用語「約」及び「実質的に」は、一覧のパラメータ及び一覧のパラメータのプラス又はマイナス10パーセントを含む範囲を含むことを意図する。更に、用語「医療従事者」は、医師、看護師、及び補助要員を含む医療要員を概して指すために使用される。
本開示は、細長い本体、ツール・アセンブリ、及び駆動アセンブリを含む、外科用ステープリング・デバイスを対象とする。駆動アセンブリは、ツール・アセンブリからステープルを射出し、ツール・アセンブリの顎部の間に締め付けられた組織を切断するために、ツール・アセンブリに関連して動くことができる。ツール・アセンブリは、ツール・アセンブリが、非関節位置と関節位置との間で枢軸を中心に関節運動ができるように、細長い本体の長手方向軸に垂直な枢軸を画定する、枢動部材によって細長い本体に固定される。駆動アセンブリは、可撓性駆動ビームに連結された作業端を含む。可撓性駆動ビームは、金属コア部材、及びコア部材より低い摩擦係数を有する材料から形成され、外科用ステープリング・デバイスの発射力を最小化するためにコアの周りに固定された外部積層を含む。
図1は、ハンドル・アセンブリ12、細長い本体又はアダプタ・アセンブリ14、及びツール・アセンブリ16を含む、ステープリング・デバイス10として概して示された外科用ステープリング・デバイスを示す。本開示の態様では、ハンドル・アセンブリ12は、電動式であり、静止ハンドグリップ18及び作動ボタン20を含む。作動ボタン20は、接近、ステープリング、及び組織の切断を含む、アダプタ・アセンブリ14を介してツール・アセンブリ16の様々な機能を作動するために操作できる。示されていないが、ハンドル・アセンブリ16は、ステープリング・デバイス10を作動するために、ハンドル・アセンブリ12にエネルギーを提供する電池(図示せず)を支持することができる。ステープリング・デバイス10は電動式ステープリング・デバイスとして示されているが、本開示の利点は、手動式外科用ステープリング・デバイス、並びにロボット制御式ステープリング・デバイスで使用するのに適していることが想定される。
本開示の態様では、ツール・アセンブリ16は、ツール・アセンブリ16及び本体部24を含む再荷重アセンブリ22の一部を形成する。本体部24は、ステープリング・デバイス10のアダプタ・アセンブリ14(図1)に解除可能に連結された近位部、及びツール・アセンブリ16を支持する遠位部を有する。ツール・アセンブリ16は、再荷重アセンブリ22の一部を形成する必要はないが、アダプタ・アセンブリ14の遠位部にしっかりと接続することができることが想定される。
図2及び3は、枢動部材26及び連結部材28により本体部24の遠位部上に支持されたツール・アセンブリ16を備えた荷重アセンブリ22を示す。枢動部材26は、ツール・アセンブリ16の近位部に固定され、アダプタ・アセンブリ14の再荷重アセンブリ24の本体部24の長手方向軸「X」(図1)に垂直な枢軸「Z」(図1)を画定する、装着部材30上に支持される。連結部材28のそれぞれは、枢動部材26に連結された遠位部、及びツール・アセンブリ16が枢軸「Z」を中心に枢動できるように、再荷重アセンブリ22の本体部24にしっかりと固定された近位部を有する。
ツール・アセンブリ16は、アンビル・アセンブリ32及びカートリッジ・アセンブリ34を含む。アンビル・アセンブリ32は、ステープル形成ポケット38(図2)及び中心ナイフ・スロット40を画定する、アンビルプレート36を含む。ステープル形成ポケット38は、中心ナイフ・スロット40の両側に列状に位置合わせされ、アンビル・アセンブリ32とカートリッジ・アセンブリ34との間に締め付けられた組織内にステープルを形成するために、ステープリング・デバイス10が発射された時に、カートリッジ・アセンブリ34から射出されたステープル(図示せず)を受領する。
カートリッジ・アセンブリ34は、チャネル部材42、及びチャネル部材42内で支持されたステープル・カートリッジ44を含む。ステープル・カートリッジ44は、ステープル・スロット46(図3)及び中心ナイフ・スロット48を画定する。ステープル・スロット46は、中心ナイフ・スロット48の両側に列状に位置合わせされ、ステープル(図示せず)を受領する。チャネル部材42も、ステープル・カートリッジ44内のナイフ・スロット48と軸方向に位置合わせされた、中心ナイフ・スロット48aを画定する。本開示の態様では、アンビル・アセンブリ32は、装着部材30にしっかりと固定され、カートリッジ・アセンブリ34は、カートリッジ・アセンブリ34が、開位置とクランプ位置との間でアンビル・アセンブリ32に関連して動くことができるように、装着部材30上に枢動可能に支持される。クランプ位置では、アンビル・アセンブリ32のアンビルプレート36は、カートリッジ・アセンブリ34のステープル・カートリッジ44と並列に位置合わせされる。アンビル・アセンブリ32は、装着部材30に枢動可能に固定することができ、カートリッジ・アセンブリ34は、装着部材30にしっかりと固定することができることが想定される。米国特許第7,891,534号明細書(「第’534号特許」)は、ステープリング・デバイス10と共に使用するのに適したツール・アセンブリを詳細に開示している。
再荷重アセンブリ22の本体部24は、本体50、駆動アセンブリ52、及び外部管54を含む。本開示の態様では、本体50は本体半体部50a及び50bから形成され、本体半体部50a及び50bは、一緒に固定された時に、本体50内の後退位置と前進位置との間で駆動アセンブリ52の動きを促進するために、駆動アセンブリ52を受領する長手方向チャネル56を形成する。本体50は、本体半体部50a及び50bが組み立てられた時に、外部管54内に受領される。
図4~9は、作業端60及び可撓性駆動ビーム・アセンブリ62を含む駆動アセンブリ52を示す。駆動アセンブリ52の作業端60は、Iビーム構成を有し、第1のビーム64、第2のビーム66、及び第1のビーム64を第2のビーム66にしっかりと連結する垂直支柱68を含む。本開示の態様では、垂直支柱68は、遠位に面する切断縁部71を支持し又は含む。駆動アセンブリ52の作業端60は、開位置とクランプ位置との間でツール・アセンブリ16を動かし、ステープル・カートリッジ44からステープルを発射するために、ツール・アセンブリ16内に受領され、ツール・アセンブリ16を通って動くことができる。駆動アセンブリ52の作業端60とツール・アセンブリ16の相互作用のより詳細な記載については、第’534号特許を参照されたい。
駆動ビーム・アセンブリ62は、金属コア部材70及びコア部材70の両側に位置付けられた外部積層72を含む。コア部材70は、平坦な側壁76、頂壁78、及び底壁80を有する可撓性ビーム74、近位部並びに遠位部を含む。可撓性ビーム74の遠位部は、駆動アセンブリ60の作業端60に連結される。本開示の態様では、コア部材70の遠位部は、溶接により駆動アセンブリ60の作業端60に固定される。別法として、駆動アセンブリ52の作業端60を可撓性ビーム74に固定するために、連動構造、例えばダブテール・コネクタなどの他の技法を使用することができる。本開示の態様では、コア部材70は、ステンレス鋼、例えばステンレス鋼301から形成することが可能であるが、コア部材70を形成するために他の金属を使用することができることが想定される。コア部材70は、金属シートの積層から形成することができることも想定される。
駆動ビーム・アセンブリ62の外部積層72は、コア部材70の側壁76に固定される。本開示の態様では、外部積層72は、コア部材70より低い摩擦係数を有する可撓性材料から形成される。本開示の一部の態様では、外部積層72は、ポリテトラフルオロエチレン(PTFE)から形成されるが、外部積層72を形成するための他の材料、例えばナイロン及びポリプロピレンなどの使用も想定される。外部積層を形成するために選択された材料は、駆動ビーム・アセンブリ62とツール・アセンブリ16の金属成分との間の摩擦係数を約0.05~0.2に低減することが想定される。
本開示の態様では、外部積層72は、外部積層72で空洞84を画定するU字形積層アセンブリ83を形成するために、頂壁82によって一緒に連結される。空洞84は、コア部材70を受領するように寸法化される。U字形積層アセンブリ83は、外部積層72がコア部材70の側壁76に沿って位置付けられるように、コア部材70を中心に積層アセンブリ83を通過させることができる、頂壁82の反対側に位置付けられた開口86(図4)を画定する。
本開示の態様では、コア部材70の底壁80はノッチ88を画定し、外部積層72の1つは、積層アセンブリ83の開口86(図5)を横切って延在する指部90を含む。指部90は、コア部材70のノッチ88内に受領されるように位置付けられる。U字形積層アセンブリ83が図4及び7における矢印「A」によって示された方向にコア部材70の上を摺動する時、指部90は、指部90を支持する外部積層72を矢印「B」の方向に外方に変形させるために、コア部材70の側壁76の1つを係合する。指部90がコア部材70内でノッチ88と位置合わせして動かされると、指部90を支持する外部積層72は、ノッチ88内に指部90を位置付け、コア部材70を中心にU字形積層アセンブリ83を固定するために、図8における矢印「C」によって示された方向に内方にスナップ嵌合する。
図10は、ツール・アセンブリ16をクランプ位置に動かすために、駆動アセンブリ52の一部が前進又はクランプ位置で90度関節運動をしたツール・アセンブリ16を示す。駆動アセンブリ52とツール・アセンブリ16との間の相互作用の詳述については、第’534号特許を参照されたい。この位置では、駆動ビーム・アセンブリ62は、枢動部材26と隣接した位置で90度曲げられる。
図11は、ツール・アセンブリ16を発射又は作動するために前進した駆動アセンブリ52を示す。ツール・アセンブリが関節位置にある状態で、駆動アセンブリ52がステープリング・デバイス10を発射するために前進されると、駆動ビーム・アセンブリ62は、駆動アセンブリ52の作業端60がツール・アセンブリ16を通って前進するために、矢印「D」の方向に90度の屈曲に沿って前進する。ツール・アセンブリ16を通って作業端60が前進することにより、ツール・アセンブリ16を通って作動スレッドが前進して、ステープル・カートリッジ44からステープルを射出し、アンビル・アセンブリ32とカートリッジ・アセンブリ34との間に締め付けられた組織を切断する。外部積層72をコア部材70の各側面76に提供することにより、駆動アセンブリ52上の摩擦力は、ステープリング・デバイス10(図1)を発射するために必要な力を下げるために実質的に低減される。
図12~14は、概して駆動アセンブリ152として示された、ステープリング・デバイス10の駆動アセンブリ52の代替版を示す。駆動アセンブリ152は、作業端160及び可撓性駆動ビーム・アセンブリ162を含む。駆動アセンブリ152の作業端160は、駆動アセンブリ52の作業端60(図4)と同一であり、本明細書では更に詳細に記載されない。可撓性駆動ビーム・アセンブリ162は、コア部材170及び外部積層172を含む。コア部材170は、コア部材170を通るコア部材170の側壁176の間に延在する細長い開口174を画定する。外部積層172のそれぞれは、コア部材170内の細長い開口174と位置合わせされ、外部積層172を通って延在する、細長い開口178を画定する。細長い開口178のそれぞれは、外部積層172をコア部材170の側壁176に固定するために、コア部材170内の開口174の各々の中に受領された、内方に突出するリブ180によって結び付けられる。本開示の態様では、外部積層172のリブ180は、外部積層172をコア部材170の両側176に固定するために、超音波溶接などによって一緒に固定することができる。
駆動アセンブリのこの版及び以下に記載されている駆動アセンブリの版のコア部材170及び外部積層172は、コア部材70及び外部積層72について上に同定された材料から形成され、本明細書では更に詳細には記載されない。
図15~18は、概して駆動アセンブリ252として示された、ステープリング・デバイス10の駆動アセンブリ52(図4)の代替版を示す。駆動アセンブリ252は、作業端260及び可撓性駆動ビーム・アセンブリ262を含む。駆動アセンブリ252の作業端260は、駆動アセンブリ52の作業端60(図4)と同一であり、本明細書では更に詳細に記載されない。可撓性駆動ビーム・アセンブリ262は、コア部材270及び外部積層272を含み、外部積層272は、空洞286を画定する長方形の積層アセンブリ283を形成するために、頂壁及び底壁282によって一緒に連結される。空洞286は、コア部材270を摺動可能に受領するように寸法化される。本開示の態様では、コア部材270の頂壁278及び底壁280は、近位に面する傾斜面、及びコア部材270の長手方向軸に垂直な遠位停止面を含む、突起288を含む。長方形の積層アセンブリ283は、積層アセンブリ283の頂壁282a及び底壁282b内に切欠き290を有する遠位部を含む。コア部材270が空洞286内に受領され、積層アセンブリ283が図16における矢印「E」の方向に摺動されると、突起288は、積層アセンブリ283をコア部材270の周りに固定するために、切欠き290内に受領される。
本開示の態様では、積層アセンブリ283の遠位部は、コア部材270上の突起288を積層アセンブリ283内の切欠き290の中を通過させることができるように、積層アセンブリ283の頂壁及び底壁282を図17における矢印「F」の方向に外方に曲げることができるために、積層アセンブリ283の遠位端に可撓性を提供するスロット292(図15)を含む。一旦突起288が切欠き290の中を通過すると、積層アセンブリ283の遠位部は、積層アセンブリ283をコア部材270に固定するためにその非付勢位置に戻る。
図19及び20は、概して駆動アセンブリ352として示された、ステープリング・デバイス10の駆動アセンブリ252(図15)の代替版を示す。駆動アセンブリ352は、長方形の積層アセンブリ383内の切欠き390が、積層アセンブリの頂壁及び底壁上より、むしろ外部積層372の遠位延長部372a上に形成され、突起388が、コア部材の頂壁及び底壁上より、むしろ駆動アセンブリ352の作業端360の垂直支柱368上に形成されることを除いて、駆動アセンブリ252に実質的に類似している。積層アセンブリ383が、図20における矢印「G」の方向にコア部材370の上を摺動すると、駆動アセンブリ352の作業端360の垂直支柱368上の突起388は、積層アセンブリ383をコア部材370に固定するために、突起288(図18)が切欠き290内に受領されるのと同じ手法で、外部積層372の遠位延長部内に形成された切欠き390内に受領される。
図21は、概して駆動アセンブリ452として示された、ステープリング・デバイス10の駆動アセンブリ52の別の代替版を示す。駆動アセンブリ452は、作業端460及び可撓性駆動ビーム・アセンブリ462を含む。駆動アセンブリ452の作業端460は、駆動アセンブリ52の作業端60(図4)と同一であり、本明細書では更に詳細に記載されない。可撓性駆動ビーム・アセンブリ462は、コア部材470及び外部積層472を含み、外部積層472は、空洞486を画定する長方形の積層アセンブリ483を形成するために、頂壁及び底壁482によって一緒に連結される。空洞486は、コア部材470を受領する。本開示の態様では、コア部材470及び外部積層472は、コア部材470を空洞486内の外部積層472に固定するために、ピン又はダボ494を受領する開口492を画定する。
図22~24は、概して駆動アセンブリ552として示された、ステープリング・デバイス10の駆動アセンブリ52の別の代替版を示す。駆動アセンブリ552は、作業端560及び可撓性駆動ビーム・アセンブリ562を含む。駆動アセンブリ552の作業端560は、駆動アセンブリ52の作業端60(図4)と同一であり、本明細書では更に詳細に記載されない。可撓性駆動ビーム・アセンブリ562は、コア部材570及び外部積層572を含む。本開示の態様では、外部積層572のそれぞれは段付開口574を画定し、拡大頭部596を備えた内方に延在する突起594を含む。コア部材570は、突起594と位置合わせされた細長いスロット598を画定する。突起594は、コア部材570内の細長いスロット598を通って位置付けられ、外部積層572を互いに及びコア部材570に固定するために、他方の外部積層572の段付開口574の中に圧入される。コア部材570内に細長いスロット598を提供することにより、外部積層572は、コア部材570に関連して一斉に摺動することができる。外部積層572のそれぞれは、1つの突起594を含み、1つの開口574を画定してもよく、又は外部積層572の一方は、2つの開口574を画定することができ、外部積層572の他方は、2つの突起594を含むことができることが想定される。
図25及び26は、概して駆動アセンブリ652及び752として示された、ステープリング・デバイス10の駆動アセンブリ52の他の代替版を示す。駆動アセンブリ652では、駆動ビーム・アセンブリ662の外部積層672及びコア部材670は、開口674及び676のそれぞれを画定し、開口674及び676は互いに位置合わせされる。開口674及び676は、外部積層672をコア部材670に固定するグロメット678(図25)を受領する。本開示のこの態様では、グロメット678は外端680を含み、外端680は、外部積層672をコア部材670に緊密に固定するために、開口674の一部を画定する外部積層672の角度の付いた面682に分岐して係合する。
駆動アセンブリ752(図26)は、外部積層772が管状リベット778を使用して互いに、及びコア部材770に固定されることを除いて、駆動アセンブリ652(図25)と実質的に同じである。本開示のこの態様では、外部積層772内の開口774は段付であり、外部積層772を互いに、及びコア部材770に固定するために、リベット778の頭部780を受領する。
本明細書に具体的に記載され、添付図面に示されたデバイス及び方法は、非限定的な例示的実施形態であることが当業者には理解されよう。一例示的実施形態に関連して示され、又は記載された要素及び特徴は、本開示の範囲から逸脱することなく別の要素及び特徴と組み合わせてもよいことが想定される。その上、当業者は、上記の実施形態に基づいた本開示の更なる特徴及び利点を認識するであろう。従って、本開示は、添付の特許請求の範囲によって示されたものを除いて、具体的に示されて記載されたものによって限定されるものではない。

Claims (20)

  1. 第1のビーム、第2のビーム、及び前記第1のビームを前記第2のビームに相互接続する垂直支柱を含む、Iビーム構成を有する作業端と、
    コア部材及び外部積層を含む駆動ビーム・アセンブリであって、前記コア部材は、平坦な側壁、頂壁、及び底壁を有する可撓性ビームを含み、前記可撓性ビームは、前記作業端に固定された遠位部を有し、前記外部積層は、前記可撓性ビームの前記平坦な側壁に沿って支持され、前記コア部材は金属から形成され、前記外部積層は、前記コア部材より低い摩擦係数を有する材料から形成される、駆動ビーム・アセンブリを含む、駆動アセンブリ。
  2. 前記外部積層は、ポリテトラフルオロエチレンから形成される、請求項1に記載の駆動アセンブリ。
  3. 前記コア部材は、ステンレス鋼から形成される、請求項2に記載の駆動アセンブリ。
  4. 前記外部積層は、空洞及び頂壁と反対側の開口を画定するU字形積層アセンブリを形成するために、前記頂壁によって一緒に連結され、前記空洞は、前記開口を通して前記コア部材を受領する、請求項1に記載の駆動アセンブリ。
  5. 前記コア部材の前記底壁はノッチを画定し、前記外部積層の1つは、前記ノッチと位置合わせされ、前記開口の中に延在する指部を含み、前記指部は、前記U字形積層アセンブリを前記コア部材上に固定するために、前記U字形積層アセンブリが前記コア部材上に位置付けられた時に、前記ノッチ内にスナップ嵌合式に受領される、請求項4に記載の駆動アセンブリ。
  6. 前記コア部材は開口を画定し、前記外部積層のそれぞれは、前記コア部材内の前記開口と位置合わせされる開口を画定し、前記外部積層内の前記開口は、前記コア部材内の前記開口内に受領された内方に突出するリブによって結び付けられ、前記外部積層上の前記内方に延在するリブは、前記外部積層を前記コア部材の両側に固定するために、前記コア部材の前記開口内に一緒に固定される、請求項1に記載の駆動アセンブリ。
  7. 前記外部積層は、長方形の積層アセンブリを形成するために、頂壁及び底壁と一緒に連結され、前記長方形の積層アセンブリは、前記コア部材を受領する空洞を画定する、請求項1に記載の駆動アセンブリ。
  8. 前記コア部材の前記頂壁及び前記底壁のそれぞれは突起を含み、前記長方形の積層アセンブリの前記頂壁及び前記底壁のそれぞれは、前記長方形の積層アセンブリを前記コア部材上に固定するために、前記突起の1つを受領する切欠きを画定する、請求項7に記載の駆動アセンブリ。
  9. 前記外部積層のそれぞれは、切欠きを画定する遠位延長部を含み、前記駆動アセンブリの前記作業端は突起を含み、前記突起は、前記長方形の積層アセンブリを前記コア部材に固定するために、前記切欠き内に受領される、請求項7に記載の駆動アセンブリ。
  10. 前記外部積層及び前記コア部材は開口を画定し、前記長方形の積層アセンブリは、ピン、ダボ、リベット、及びグロメットから構成される群から選択された締結具で前記コア部材に固定され、前記締結部は前記開口を通って延在する、請求項7に記載の駆動アセンブリ。
  11. 前記外部積層のそれぞれは開口を画定し、突起を含み、前記コア部材は、前記外部積層の前記突起を受領する細長いスロットを含み、前記外部積層のそれぞれの前記突起は、前記外部積層を互いに、及び前記コア部材に固定するために、前記外部積層の他方の前記開口内に受領され、前記コア部材内の前記細長いスロットは、前記外部積層と前記コア部材との間の相対移動を促進する、請求項1に記載の駆動アセンブリ。
  12. 長手方向軸を画定し、近位部及び遠位部を有するアダプタ・アセンブリと、
    ツール・アセンブリが枢軸を中心に非関節位置と関節位置との間で関節運動ができるように、前記長手方向軸に垂直な前記枢軸を画定する枢動部材により、前記アダプタ・アセンブリの前記遠位部上に支持されるツール・アセンブリであって、前記ツール・アセンブリは、開位置とクランプ位置との間で互いに関連して動くことができる、アンビル・アセンブリ及びカートリッジ・アセンブリを含む、ツール・アセンブリと、
    前記ツール・アセンブリを作動させるために、後退位置と前進位置との間で前記ツール・アセンブリに関連して動くことができる駆動アセンブリであって、前記駆動アセンブリは、
    第1のビーム、第2のビーム、及び前記第1のビームを前記第2のビームに相互接続する垂直支柱を含む、Iビーム構成を有する作業端と、
    コア部材及び外部積層を含む駆動ビーム・アセンブリであって、前記コア部材は、平坦な側壁、頂壁、及び底壁を有する可撓性ビームを含み、前記可撓性ビームは、前記作業端に固定された遠位部を有し、前記外部積層は、前記可撓性ビームの前記平坦な側壁に沿って支持され、前記コア部材は金属から形成され、前記外部積層は、前記コア部材より低い摩擦係数を有する材料から形成される、駆動ビーム・アセンブリを含む、駆動アセンブリを含む、ステープリング・デバイス。
  13. 前記外部積層は、ポリテトラフルオロエチレンから形成される、請求項12に記載のステープリング・デバイス。
  14. 前記コア部材は、ステンレス鋼から形成される、請求項13に記載のステープリング・デバイス。
  15. 前記外部積層は、空洞及び頂壁と反対側の開口を画定するU字形積層アセンブリを形成するために、前記頂壁によって一緒に連結され、前記空洞は、前記開口を通して前記コア部材を受領する、請求項12に記載のステープリング・デバイス。
  16. 前記コア部材の前記底壁はノッチを画定し、前記外部積層の1つは、前記ノッチと位置合わせされ、前記開口の中に延在する指部を含み、前記指部は、前記U字形積層アセンブリを前記コア部材上に固定するために、前記U字形積層アセンブリが前記コア部材上に位置付けられた時に、前記ノッチ内にスナップ嵌合式に受領される、請求項15に記載のステープリング・デバイス。
  17. 前記コア部材は開口を画定し、前記外部積層のそれぞれは、前記コア部材内の前記開口と位置合わせされる開口を画定し、前記外部積層内の前記開口は、前記コア部材内の前記開口内に受領された内方に突出するリブによって結び付けられ、前記外部積層上の前記内方に延在するリブは、前記外部積層を前記コア部材の両側に固定するために、前記コア部材の前記開口内に一緒に固定される、請求項12に記載のステープリング・デバイス。
  18. 前記外部積層は、長方形の積層アセンブリを形成するために、頂壁及び底壁と一緒に連結され、前記長方形の積層アセンブリは前記コア部材を受領する空洞を画定する、請求項12に記載のステープリング・デバイス。
  19. 前記コア部材の前記頂壁及び前記底壁のそれぞれは突起を含み、前記長方形の積層アセンブリの前記頂壁及び前記底壁のそれぞれは、前記長方形の積層アセンブリを前記コア部材上に固定するために、前記突起の1つを受領する切欠きを画定する、請求項18に記載のステープリング・デバイス。
  20. 前記外部積層のそれぞれは、切欠きを画定する遠位延長部を含み、前記駆動アセンブリの前記作業端は突起を含み、前記突起は、前記長方形の積層アセンブリを前記コア部材に固定するために、前記切欠き内に受領される、請求項18に記載のステープリング・デバイス。
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US9987012B2 (en) 2015-07-21 2018-06-05 Covidien Lp Small diameter cartridge design for a surgical stapling instrument
US10064622B2 (en) 2015-07-29 2018-09-04 Covidien Lp Surgical stapling loading unit with stroke counter and lockout
US10045782B2 (en) 2015-07-30 2018-08-14 Covidien Lp Surgical stapling loading unit with stroke counter and lockout
WO2017180785A1 (en) 2016-04-12 2017-10-19 Applied Medical Resources Corporation Reload shaft assembly for surgical stapler
US10537324B2 (en) 2016-12-21 2020-01-21 Ethicon Llc Stepped staple cartridge with asymmetrical staples
US10478183B2 (en) 2017-02-17 2019-11-19 Ethicon Llc Adjunct release for surgical staplers
US11517313B2 (en) * 2021-01-27 2022-12-06 Covidien Lp Surgical stapling device with laminated drive member

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US11517313B2 (en) 2022-12-06
US20230123878A1 (en) 2023-04-20
CN116761558A (zh) 2023-09-15
WO2022164684A1 (en) 2022-08-04
US20220233193A1 (en) 2022-07-28
EP4284259A1 (en) 2023-12-06

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