JP5503446B2 - バットレス材料を保持する縫合糸のクリンプおよび解放 - Google Patents

バットレス材料を保持する縫合糸のクリンプおよび解放 Download PDF

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JP5503446B2
JP5503446B2 JP2010174053A JP2010174053A JP5503446B2 JP 5503446 B2 JP5503446 B2 JP 5503446B2 JP 2010174053 A JP2010174053 A JP 2010174053A JP 2010174053 A JP2010174053 A JP 2010174053A JP 5503446 B2 JP5503446 B2 JP 5503446B2
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オルソン リー
アラニー エルニー
モズツィエルズ パトリック
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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
    • 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
    • A61B17/07292Reinforcements for staple line, e.g. pledgets
    • 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
    • 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
    • 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
    • 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
    • A61B2017/07285Stapler heads characterised by its cutter

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Description

本開示は、バットレス材料をアンビルに取り付け、そしてバットレス材料をアンビルから解放するシステムに関する。より特定すると、本開示は、バットレス材料保持縫合糸をアンビルにクリンプしそして脱係合するための、保持および解放機構に関する。
種々の外科手術手順中、しばしば、組織の2つの側面を再度付着させる必要がある。このことは代表的に、これらの組織の2つの縁部を、互いに対して同一面になるように近接させ、そしてこれらの組織をステープル留め、縫合などにより固定することによって、達成される。いくつかの例において、組織を接続するステープル線または縫合線は、組織を裂き得るかまたは切り抜け得る(特に、その組織が比較的弱い場合)。従って、治癒中に、ステープル線または縫合線を通しての漏出が起こり得る。
これらの問題を軽減する目的で、材料のストリップ(「バットレス材料」と呼ばれる)が、ステープル留めまたは縫合の前に、組織に対して配置される。このバットレス材料は、ステープル線または縫合線を強化することに役立ち、そして組織の接合部を覆って治癒前の漏出を防止することに役立つ。
特定の最小侵襲性外科手術手順において、バットレス材料は、使用される外科手術用器具に予め取り付けられ得る。例えば、バットレス材料は、外科手術用ステープル留め器具のステープルカートリッジまたはアンビルアセンブリに取り付けられ得る。このバットレス材料は、種々の手段(例えば、接着剤など)により保持される。
従って、容易な組み立て、容易な保持、および/または組織がステープル留めされた後のバットレス材料保持縫合糸の引き続く解放を可能にする、縫合糸の保持および解放機構を組み込むカートリッジまたはアンビルアセンブリを提供することが望ましい。
上記課題を解決するために、本発明は、例えば、以下を提供する:
(項目1A)
自身に設置された可動部分を有するハンドル;
該ハンドルから遠位に延びる細長管状部材;
該細長管状部材の遠位端に設置されたエンドエフェクタであって、該エンドエフェクタは、下側および上側を有する第一の部材を備え、該下側は面を有し、該エンドエフェクタは、ポケットおよび側壁を有する、エンドエフェクタ;
該面に対して配置されたバットレス材料のストリップ;
バックスパンならびに該バックスパンから延びる第一の端部および第二の端部を有する保持構成要素であって、該バックスパンは、該バットレス材料のストリップを横切って配置され、そして該第一の端部は、該エンドエフェクタの該下側から該上側まで延びる、保持構成要素;ならびに
該エンドエフェクタの該上側に移動可能に設置された保持部材であって、該保持構成要素の該第一の端部は、該保持部材と該第一の部材との間に解放可能に固定され、該保持部材は、可撓性レッグおよびタブを有し、該タブは、該側壁に係合して、該保持部材をロックされた位置に維持し、該保持部材は、該ロックされた位置において該第一の端部と係合する、保持部材、
を備える、外科手術用器具。
(項目2A)
上記エンドエフェクタの上記上側がヘッドを備え、そして上記ポケットが上記ヘッドより近位に位置する、上記項目に記載の外科手術用器具。
(項目3A)
上記保持部材が上記ポケット内で移動可能に設置され、そして上記保持構成要素の上記第一の端部が、上記ヘッドの近位面と該保持部材の遠位面との間に解放可能に固定される、上記項目のうちのいずれかに記載の外科手術用器具。
(項目4A)
上記保持部材が遠位面を有するプッシュプレートを備え、上記保持構成要素の第一の端部が、該プッシュプレートの該遠位面と上記ヘッドの上記近位面との間に解放可能に固定される、上記項目のうちのいずれかに記載の外科手術用器具。
(項目5A)
上記エンドエフェクタが隙間溝を備え、上記保持構成要素の上記第一の端部が、該隙間溝を通って、該エンドエフェクタの上記下側から該エンドエフェクタの上記上側まで通過する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目6A)
上記隙間溝が上記ポケットを通過する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目7A)
上記タブの近位面が、上記ロックされた位置において上記側壁の遠位面と係合する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目8A)
上記保持部材が、上記プッシュプレートから上記可撓性レッグの近位端まで延びる棒を備える、上記項目のうちのいずれかに記載の外科手術用器具。
(項目9A)
上記可撓性レッグに係合して該可撓性レッグを拘束された状態まで移動させるように移動可能な従動子をさらに備える、上記項目のうちのいずれかに記載の外科手術用器具。
(項目10A)
上記保持部材が第二の可撓性レッグを備え、該第二の可撓性レッグが第二の側壁と係合可能なタブを備える、上記項目のうちのいずれかに記載の外科手術用器具。
(項目11A)
上記エンドエフェクタが第二の隙間溝を有し、上記保持構成要素の上記第二の端部が、該第二の隙間溝を通って、上記エンドエフェクタの下側から該エンドエフェクタの該上側まで通過する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目12A)
上記バットレス材料のストリップが、上記保持構成要素の上記第一の端部および上記第二の端部の通過のための第一の切り抜きおよび第二の切り抜きを備える、上記項目のうちのいずれかに記載の外科手術用器具。
(項目13A)
上記エンドエフェクタが、アンビル部材および外科手術用ステープル留めカートリッジを有する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目14A)
上記第一の端部が上記隙間溝内で締められる、上記項目のうちのいずれかに記載の外科手術用器具。
(項目15A)
上記エンドエフェクタがナイフスロットを有する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目16A)
上記バットレス材料のストリップの一部分が穿孔されている、上記項目のうちのいずれかに記載の外科手術用器具。
(項目17A)
上記従動子が上記可撓性レッグを圧縮するように移動可能であり、そして上記保持部材が上記保持構成要素から離れるように移動することを可能にする、上記項目のうちのいずれかに記載の外科手術用器具。
(項目18A)
上記従動子が貫通可能な材料から形成されている、上記項目のうちのいずれかに記載の外科手術用器具。
(項目19A)
ナイフの近位への移動が上記従動子を後方に引く、上記項目のうちのいずれかに記載の外科手術用器具。
本発明はさらに、例えば、以下を提供する:
(項目1B)
自身に設置された可動部分を有するハンドル;
該ハンドルから遠位に延びる細長管状部材;
該細長管状部材の遠位端に設置されたエンドエフェクタアセンブリであって、該エンドエフェクタアセンブリは、下側および上側を有する第一の部材を備え、該下側が面を有する、エンドエフェクタアセンブリ;
該面に対して配置されたバットレス材料のストリップ;
バックスパンならびに該バックスパンから延びる第一の端部および第二の端部を有する保持構成要素であって、該バックスパンは、該バットレス材料のストリップを横切って配置され、そして該第一の端部は、該第一の部材の該下側から該上側まで延びる、保持構成要素;ならびに
該第一の部材の該上側に移動可能に設置された保持部材であって、該保持構成要素の該第一の端部は、該保持部材の遠位面と、該第一の部材の近位面との間に解放可能に固定される、保持部材、
を備える、外科手術用器具。
(項目2B)
上記第一の部材の上記上側が、ヘッド、および該ヘッドより近位に位置するポケットを備える、上記項目に記載の外科手術用器具。
(項目3B)
上記保持部材が、上記ポケット内で移動可能に設置されており、そして上記保持構成要素の上記第一の端部が、上記ヘッドの近位面と該保持部材の上記遠位面との間に解放可能に固定される、上記項目のうちのいずれかに記載の外科手術用器具。
(項目4B)
上記保持部材が、遠位面を有するプッシュプレートを備え、上記保持構成要素の上記第一の端部が、該プッシュプレートの該遠位面と上記ヘッドの上記近位面との間で解放可能に固定される、上記項目のうちのいずれかに記載の外科手術用器具。
(項目5B)
上記アンビル部材が、隙間溝を備え、その結果、上記保持構成要素の上記第一の端部が、上記第一の部材の上記下側から該第一の部材の上側まで、該隙間溝を通過する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目6B)
上記隙間溝が上記ポケットを通過している、上記項目のうちのいずれかに記載の外科手術用器具。
(項目7B)
上記第一の部材が、チャネルを規定する1対の側壁を有し、各側壁が遠位面を有し、上記保持部材が、該チャネルと上記ポケットとの間で移動可能なタブを備え、その結果、該タブが該ポケット内にある場合に、該タブの近位面が該側壁の遠位面と係合する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目8B)
上記保持部材が可撓性レッグを備え、上記タブが該可撓性レッグの遠位端に位置している、上記項目のうちのいずれかに記載の外科手術用器具。
(項目9B)
上記保持部材が、上記プッシュプレートから上記可撓性レッグの近位端まで延びる棒を備え、その結果、該保持部材が近位位置にある場合には、上記タブは上記チャネル内にあり、そして該保持部材が遠位位置にある場合には、該タブは上記側壁の上記遠位面と係合して、該プッシュプレートを上記保持構成要素の上記第一の端部と係合させてロックする、上記項目のうちのいずれかに記載の外科手術容易具。
(項目10B)
上記可撓性レッグが、上記チャネル内で拘束された状態にあり、そして上記タブが上記側壁の上記遠位面より遠位にある場合には拡張した状態にある、上記項目のうちのいずれかに記載の外科手術用器具。
(項目11B)
上記保持および解放機構が、上記チャネル内で移動可能な従動子をさらに備え、該従動子は、上記可撓性レッグと係合可能であることにより、該可撓性レッグを上記拘束された状態と上記拡張した状態との間で移動させる、上記項目のうちのいずれかに記載の外科手術用器具。
(項目12B)
上記保持部材が、上記棒の近位端に固定された第二の可撓性レッグを備え、該第二の可撓性レッグは、上記側壁の上記遠位面のうちの1つと係合可能なタブを備える、上記項目のうちのいずれかに記載の外科手術用器具。
(項目13B)
上記第一の部材は、第二の隙間溝を有し、その結果、上記保持構成要素の上記第二の端部が、上記第一の部材の上記下側から該第一の部材の上側へと、該第二の隙間溝を通過する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目14B)
上記バットレス材料のストリップが、上記保持構成要素の上記第一の端部および上記第二の端部の通過のための第一の切り抜きおよび第二の切り抜きを備える、上記項目のうちのいずれかに記載の外科手術用器具。
(項目15B)
上記可動部分が、上記保持部材を第一の位置から第二の位置へと移動させるように作動可能であり、該第一の位置は、上記保持構成要素を該保持部材の遠位面と上記第一の部材の近位面との間に固定し、そして該第二の位置は、該保持部材が該保持構成要素の上記第一の端部および上記第二の端部から離れるように移動することを可能にする、上記項目のうちのいずれかに記載の外科手術用器具。
(項目16B)
上記第一の部材がアンビル部材であり、そして上記外科手術用器具が第二の部材をさらに備え、該第二の部材が外科手術用ステープル留めカートリッジである、上記項目のうちのいずれかに記載の外科手術用器具。
(項目17B)
上記保持部材がロックされた位置を有し、該保持部材は該ロックされた位置において上記保持構成要素を固定する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目18B)
上記保持部材が、該保持部材を上記ロックされた位置に維持するための少なくとも1つのタブを有する、上記項目のうちのいずれかに記載の外科手術用器具。
(項目19B)
上記少なくとも1つのタブを移動させるための従動子をさらに備え、上記ロックされた位置から離れる上記保持部材の移動を可能にする、上記項目のうちのいずれかに記載の外科手術用器具。
(摘要)
バットレス材料のストリップをエンドエフェクタに固定する縫合糸をクリンプしそして解放するための機構が提供される。この機構は、このエンドエフェクタ内で移動可能に設置された保持部材を備える。この保持部材は、このエンドエフェクタにこの縫合糸をクリンプする第一の位置から、このエンドエフェクタからこの縫合糸を解放する第二の位置へと移動可能である。この機構は、従動子部材をさらに備え、この従動子部材は、この保持部材と係合可能であり、そして第一の位置と第二の位置との間でこの保持部材を移動させるように、外科手術用器具の起動に応答して移動可能である。この保持部材をこの第一の位置に固定するためのロック機構もまた提供される。この従動子部材は、このロック機構を脱係合させるように働く。
(要旨)
ハンドル部材に設置された可動部分またはトリガを有するハンドル部材、およびこのハンドル部材から遠位に延びる細長管状部材一般に備える、外科手術用器具が開示される。エンドエフェクタアセンブリが、この細長管状部材の遠位端に設置される。このエンドエフェクタアセンブリは、下側および上側を有し、この下側は、面を有する。バットレス材料のストリップが、この第一の部材のこの面に対して配置される。バックスパンならびにこのバックスパンから延びる第一の端部および第二の端部を有する、保持構成要素が提供される。このバックスパンは、このバットレス材料のストリップを横切って配置され、そしてこの第一の端部は、この第一の部材の下側から上側まで延びる。
この第一の部材の上側は、特定の実施形態において、ヘッドおよびこのヘッドの近くに位置するポケットを備える。この保持部材は、このポケット内で移動可能に設置され得、そしてこの保持構成要素の第一の端部は、ヘッドの近位面とこの保持部材の遠位面との間に解放可能に固定され得る。この保持部材は、特定の実施形態において、プッシュプレートを備え、このプッシュプレートは、遠位面を有する第一の部材を備え、そしてこの保持構成要素の第一の端部は、このプッシュプレートの遠位面とこのヘッドの近位面との間に解放可能に固定される。
1つの実施形態において、この第一の部材は、隙間溝を備え、その結果、この保持構成要素の第一の端部が、この第一の部材の下側からこの第一の部材の上側へと、この隙間溝を通過する。特定の実施形態において、この隙間溝は、このポケットを通る。
この第一の部材は、望ましくは、チャネルを規定する1対の側壁をさらに備え、各側壁は、遠位面を有する。この保持部材は、このチャネルとこのポケットとの間を移動可能なタブを備え得、このタブの近位面は、このタブがこのポケット内にある場合に、この側壁の遠位面と係合する。
この保持部材は、特定の実施形態において、可撓性レッグを備え、そしてこのタブは、この可撓性レッグの遠位端に位置する。この可撓性レッグは、チャネル内にある場合には、拘束された状態にあり、そしてこのタブが側壁の遠位面より遠位にある場合には、拡張した状態にある。この保持部材は、プッシュプレートから可撓性レッグの近位端まで延びる棒をさらに備え、その結果、このタブは、近位位置においてはチャネル内にあり、そして遠位位置においては側壁の遠位面と係合して、このプッシュプレートを保持構成要素の第一の端部と係合させてロックする。
保持および解放機構は、チャネル内で移動可能な従動子をさらに備え得る。この従動子は、可撓性レッグと係合可能であり、この可撓性レッグを拘束された状態と拡張した状態との間で移動させる。
1つの実施形態において、この保持部材は、この棒の近位端に固定された第二の可撓性レッグを備える。この第二の可撓性レッグもまた、側壁の遠位面のうちの一方の係合可能なタブを備える。
別の実施形態において、第一の部材は、第二の隙間溝を有し、その結果、保持構成要素の第二の端部は、この第一の部材の下側からこの第一の部材の上側まで、この第二の隙間溝を通過する。
特定の実施形態において、バットレス材料のストリップは、保持構成要素の第一の端部および第二の端部の通過のための、第一の切り抜きおよび第二の切り抜きを備える。
保持部材は、保持構成要素の第一の端部が保持部材の遠位面と第一の部材の近位面との間に解放可能に固定されるように、第一の部材の上側に移動可能に設置される。この保持構成要素は、この第一の部材との係合のための、横方向に移動可能なタブを備え得る。
特定の実施形態において、外科手術用器具の可動部分またはトリガは、第一の位置(保持構成要素の第一の端部および第二の端部を保持部材の遠位面と第一の部材の近位面との間に固定する)から第二の位置(保持部材が保持構成要素の第一の端部および第二の端部から離れて移動することを可能にする)へと、保持部材を移動させるように作動可能である。
特定の実施形態において、この第一の部材はアンビル部材であり、そしてこの器具は、外科手術用ステープル留めカートリッジを備える。この保持部材は、この保持構成要素を固定する、ロックされた位置を有し得る。この保持部材は、この保持部材をこのロックされた位置に維持するための、少なくとも1つのタブを有する。この少なくとも1つのタブは、横方向に移動可能であり得、アンビル部材に係合し得る。特定の実施形態において、この器具は、この少なくとも1つのタブを移動させるための従動子を備え、この保持部材がこのロックされた位置から離れる移動を可能にする。
本開示の、バットレス付きアンビルアセンブリと一緒に使用するための縫合糸の保持および解放機構の実施形態が、図面を参照しながら本明細書中に開示される。
本発明により、容易な組み立て、容易な保持、および/または組織がステープル留めされた後のバットレス材料保持縫合糸の引き続く解放を可能にする、縫合糸の保持および解放機構を組み込むカートリッジまたはアンビルアセンブリが提供される。
図1は、縫合糸の保持および解放機構を組み込むバットレス付きアンビルアセンブリを有する、外科手術用ステープル留め器具の斜視図である。 図2は、バットレス材料のストリップおよび保持縫合糸を備えるバットレス付きアンビルアセンブリの遠位端の、下から見た斜視図である。 図3は、部品が分離された、図2と類似のバットレス付きアンビルアセンブリの遠位端の斜視図である。 アンビルカバーが取り外された、バットレス付きアンビルアセンブリの遠位端の、上から見た斜視図である。 図5は、部品が分離された、図4と類似の斜視図である。 図6は、バットレス付きアンビルアセンブリの遠位端の上平面図である。 図7は、縫合糸の保持および解放機構による保持縫合糸の固定を図示する、バットレス付きアンビルアセンブリの遠位端の上平面図である。 図8は、縫合糸の保持および解放機構の最初の解放を図示する、バットレス付きアンビルアセンブリの遠位端の上平面図である。 図9は、保持縫合糸の解放を図示する、バットレス付きアンビルアセンブリの遠位端の上平面図である。
(実施形態の詳細な説明)
バットレス付きアンビルアセンブリにおいて使用するための、本開示の保持および解放機構の実施形態が、図面を参照しながらここで詳細に記載される。図面において、同じ番号は、数枚の図の各々において、同一の要素または対応する要素を表す。当該分野において通常であるように、用語「近位」とは、使用者または操作者(すなわち、外科医または医師)に近い方の部分または構成要素をいい、一方で、用語「遠位」とは、使用者から遠い方の部分または構成要素をいう。
図1〜図9を参照し、最初に図1に関して、本開示の縫合糸の保持および解放機構の実施形態を組み込む外科手術用ステープル留め器具10が図示されている。外科手術用ステープル留め器具10は、一般に、ハンドル12から遠位に延びる細長管状部材14を有する、ピストルグリップ型のハンドル12を備える。エンドエフェクタアセンブリ16が、細長管状部材14の遠位端18から遠位に延びる。エンドエフェクタアセンブリ16は、バットレス付きアンビルアセンブリ20およびステープルカートリッジ22を備える1対のエンドエフェクタを有する。バットレス付きアンビルアセンブリ20は、ステープルカートリッジ22に対して移動可能に設置され、そしてステープルカートリッジ22から間隔を空けた開位置から、バットレス付きアンビルアセンブリ20を閉じてステープルカートリッジ22と協働的に整列させる閉位置へと移動可能である。移動可能な部分またはトリガ24がハンドル12に提供され、そしてバットレス付きアンビルアセンブリ20を開位置と閉位置との間で移動させるように作動可能である。さらに、トリガ24は、ステープルカートリッジ22に収容されたステープル(図示せず)をステープルカートリッジ22から、バットレス付きアンビルアセンブリ20のステープルクリンプポケット(図3)内へと、本明細書中以下により詳細に記載される様式で排出する目的で、ステープルカートリッジ22を起動させるように作動可能である。細長管状部材14を回転させ、これによってエンドエフェクタアセンブリ16を手術される組織に対して配向させるために、回転ノブ26がハンドル12に提供される。
ここで図2および図3を参照すると、バットレス付きアンビルアセンブリ20は、一般に、アンビル部材28を備え、このアンビル部材は、アンビル部材28の下側32に位置するバットレス材料のストリップ30を有する。具体的には、バットレス材料のストリップ30は、アンビル部材28のアンビル面34に載るように配置される。組織をステープル留めする前に、バットレス材料のストリップ30をアンビル部材28のアンビル面34と接触させて維持して固定するために、保持構成要素36が提供される。保持構成要素36は、ストラップ、縫合糸、糸、ケーブルなどを備え得、そしてバックスパン38、ならびにバックスパン38から延びる第一の端部40および第二の端部42を備える。バックスパン38は、バットレス材料のストリップ30と係合して、バットレス材料のストリップ30をアンビル面34に対して保持する。第一の端部40および第二の端部42は、隙間溝(例えば、アンビル部材28に形成された第一の隙間溝44および第二の隙間溝46)を通過し、本明細書中で以下により詳細に記載される様式で、アンビル部材28に固定される。第一の隙間溝44および第二の隙間溝46は、それぞれ、保持構成要素36の第一の端部40および第二の端部42が、第一の隙間溝44および第二の隙間溝46内で拘束したり締めたりすることなく自由に通過することを可能にするような寸法にされることが留意されるべきである。あるいは、保持構成要素36の第一の端部40および第二の端部42のうちの一方は、手術部位からの除去の際に、アンビル部材28で止まるかまたは他の様式で取り付けられて、保持構成要素36をアンビル部材28と一緒に保持し得る。保持構成要素36は、可撓性であっても、弾力性であっても、硬くてもよい。保持構成要素36は、バットレス材料30から独立していても、バットレス材料30と一体的に形成されてもよい。
バットレス材料のストリップ30は、保持構成要素36の第一の端部40および第二の端部42の通過のための、第一の切り抜き48および第二の切り抜き50を備えて、バットレス材料のストリップ30にしわが寄ったり丸まったりすることを防止する。バットレス材料のストリップ30および保持構成要素36は、バットレス材料および縫合糸のために一般的に使用される、通常公知である任意の材料(吸収性材料、再吸収性材料などが挙げられる)から形成される。
図3をしばらく参照すると、アンビル部材28のアンビル面34は、複数のステープル曲げポケット52を備え、これらのステープル曲げポケットは、ステープル留め器具において通常公知である様式で、ステープルカートリッジ22(図1)から排出されたステープル(図示せず)の自由端を受容して曲げるように働く。さらに、ナイフスロット54が、アンビル部材28の実質的な部分を完全に通って延び、ナイフ刃(図示せず)の、組織を切断し、そしてバットレス材料のストリップ30をその長さに沿って切断するための通過に適応する。バットレス材料のストリップ30がナイフスロット54の遠位端56を越えて遠位に延びる場合、バットレス材料のストリップ30の遠位端58穿孔はされるか、スロットを付けられるか、または他の様式で構築されて、バットレス材料のストリップ30が、このナイフ刃により切断される部分と同一線で2つの半体に分離されることが想定される。
ここで図4および図5を参照すると、上記のように、バットレス付きアンビルアセンブリ20は、保持構成要素または構造体36(図2)をアンビル部材28に固定し、そしてアンビル部材28との係合から解放するための、保持および解放機構60を備える。アンビル部材28の上側62は、ポケット64を備え、このポケットは、アンビル部材28の遠位端68に形成されたヘッド66と、ポケット64より近位に位置する1対の側壁70、72との間に形成される。側壁70および72は、間にチャネル74を規定する。ナイフスロット54は、チャネル74を通ってポケット64の近位端76(図5)まで延びる。図示されるように、隙間溝44および46は、ポケット64の遠位端78を通過する。
保持および解放機構60は、ポケット64およびチャネル74内に配置された、保持部材80を備える。保持部材80は、保持構成要素36の第一の端部40および第二の端部42をヘッド66に対して固定するために提供される。保持部材80は、矩形のプッシュプレート82を備え、このプッシュプレートは、ポケット64内に配置され、そしてアンビル部材28の長軸に対して垂直に配向する。棒84が、プッシュプレート82から近位に延びて、チャネル74内まで延びる。1対の可撓性アーム86および88が、棒84の拡大した近い端90から遠位に延びる。可撓性アーム86および88は、プッシュプレート82をポケット64内で遠位に、保持構成要素36に対して固定することを補助する。1対のタブ92および94が、それぞれ可撓性アーム86および88から外向きに延び、これらは、プッシュプレートがポケット64内で遠位位置にある場合に、それぞれの側壁70および72に係合するために提供される。
保持部材80は、種々の材料(例えば、プラスチック、形状記憶材料または形状記憶合金、あるいはアーム86および88が撓むことを可能にし、一方で保持構成要素36をヘッド66に対して固定するために充分なプッシュプレート82の硬さを維持するような他の材料)から形成され得る。
保持および解放機構60は、チャネル74内で保持部材80に対して近位に配置された、従動子96をさらに備える。図示される実施形態において、従動子96はU字型であり、そして基部98、ならびに基部98から遠位に延びるレッグ100および102を備える。レッグ100および102は、タブ92および94を側壁70および72との係合から解放することを補助する目的で、保持部材80の可撓性アーム86および88に係合して内向きに撓ませるために提供される。このことは、プッシュプレート82が、以下により詳細に記載される様式で、保持構成要素36から脱係合することを可能にする。U字型従動子96は、保持部材80の可撓性アーム86および88を圧縮するために充分な強度を有するように、種々の比較的硬い材料(例えば、プラスチック、ステンレス鋼など)から形成され得る。
特に図5をしばらく参照すると、棒84の遠位端104は、プッシュプレート82の中心106から延びる。レッグ100および102の内側表面108および110は、可撓性アーム86および88のそれぞれの外側表面112および114と係合して、これらの可撓性アームを棒84に向けて内向きに折りたたむかまたは押し込む。
図4に戻って参照すると、保持部材80およびU字型従動子96をアンビル部材28内に保持する目的で、バットレス付きアンビルアセンブリ20は、長手軸方向の近位端118を有するカバー116をさらに備え、この長手軸方向の近位端は、アンビル部材28のチャネル74の上に重なる。カバー116の拡大した矩形の遠位端120は、保持部材80の上でポケット64内に嵌り、そしてスナップばめ、溶接、接着などをされ得る。任意の過剰な縫合糸材料を調整してカバー116と同一面にする目的で、切り抜き122および124が、拡大した矩形の遠位端120に提供されて、保持構成要素36の第一の端部40および第二の端部42の通過を可能にする。
ここで、図2〜3および図6〜9を参照し、最初に図6に関して、バットレス付きアンビルアセンブリ20の組み立ておよび使用が、ここで記載される。組み立て前の状態において、保持部材80の一部分は、チャネル74内で近位位置にある。具体的には、タブ92および94がチャネル74内に位置し、可撓性アーム86および88を、チャネル74内で応力を受けた状態または拘束された状態にする。従動子96もまた、チャネル74内で近位位置にある。
図3をしばらく参照すると、最初に、バットレス材料のストリップ30が、アンビル部材28のアンビル面34を覆って配置される。保持構成要素36がバットレス材料のストリップ30を覆って配置され、その結果、保持構成要素36のバックスパン38が、バットレス材料のストリップ30と係合して、バットレス材料のストリップ30をアンビル面34に対して保持する(図2を参照のこと)。本明細書中で上で留意されたように、バットレス材料のストリップ30は、バットレス材料のストリップ30にしわが寄ったり襞になったりすることを防止する目的で、保持構成要素36の第一の端部40および第二の端部42をそれぞれ受容するための切り抜き48および50を備える。
図2、図3、および図6を参照すると、その後、保持構成要素36の第一の端部40および第二の端部42は、保持構成要素36の第一の端部40および第二の端部42が隙間溝44および46に完全に入るまで、アンビル部材28に形成されたそれぞれの隙間溝44および46に巻かれるか、または通される。本明細書中で上で留意されたように、隙間溝44および46は、第一の端部40および第二の端部42が隙間溝44および46内で挟み付けたり締めたりすることなく、保持構成要素36の第一の端部40および第二の端部42を緩く受容するような寸法にされる。
ここで図7を参照すると、保持構成要素36をアンビル部材28に固定し、そして特に、第一の端部40および第二の端部42をアンビル部材28内に固定する目的で、保持部材80は、手で遠位に進められて、プッシュプレート82をポケット64を通過してヘッド66の方へと移動させる。保持部材80は、プッシュプレート82の遠位面130が保持構成要素36の第一の端部40および第二の端部42を、ヘッド66の近位面132に対して捕捉するまで、遠位に進められる。この様式で、保持構成要素36、および従って、バットレス材料のストリップ30は、アンビル部材28に固定される。
本明細書中で上で留意されたように、タブ92および94が、保持部材80を遠位位置にロックする目的で提供される。保持部材80は、チャネル74内を遠位に移動し、そしてポケット64、タブ92および94は、チャネル74から出て、そしてポケット64に入る。タブ92および94がチャネル74から出るにつれて、可撓性アーム86および88は、拘束された状態から開いた状態または拡張した状態へと自由に移動し、タブ92および94の近位面134および136が第一の側壁70および第二の側壁72の遠位面138および140と係合するまで、タブ92および94をポケット64内で外向きに動かす。この位置において、保持部材80は、最も遠位の位置にロックされ、保持構成要素36をアンビル部材28に固定する。本明細書中で上で留意されたように、使用前においては、従動子96は、チャネル74内の近位位置に依然としてある。
ここで図1、図8および図9を参照すると、外科手術用器具10、および特に、バットレス付きアンビルアセンブリ20の使用が、ここで記載される。図1を参照すると、最初の位置において、バットレス付きアンビルアセンブリ20は、ステープルカートリッジ22から間隔を空けた状態にある。その後、具体的には図示されないが、外科手術用器具10は、ステープルカートリッジ22およびバットレス付きアンビルアセンブリ20をステープル留めされるべき組織の付近に配置するように、操作される。次いで、トリガ24が起動されて、バットレス付きアンビルアセンブリ22を、ステープルカートリッジ22から間隔を空けた開位置から、閉じてステープルカートリッジ22と協働的に整列した、組織の付近における閉位置まで移動させる。トリガ24のさらなる起動は、ステープルをステープルカートリッジ22から組織およびバットレス材料のストリップ30を通して、アンビル面34に形成されたステープル曲げポケット52(図3)内へと排出するように働く。ステープルが曲げポケット52内に排出されると、ナイフ刃がナイフスロット54を通過して、ステープル留めされた組織およびバットレス材料のストリップ30を切断する。本明細書中で上で留意されたように、バットレス材料のストリップ30がナイフ刃によって完全には切断されない場合、切り取り線がバットレス材料のストリップ30の遠位端58に形成されて、バットレス材料のストリップが2つの半体に完全に分離することを可能にし得る。
ここで図8を参照すると、ナイフ刃(例えば、ナイフ刃142)がチャネル54内を遠位に移動するにつれて、ナイフ刃142の遠位端144は、従動子96のバックスパン98と係合する。ナイフ刃142の遠位への移動は、従動子96をチャネル74内で遠位に押し進め、従動子96を保持部材80と係合させる。具体的には、従動子96が遠位に移動するにつれて、それぞれのレッグ100および102の内側表面108および110が、保持部材80の可撓性アーム86および88の外側表面112および114と係合する。このことにより、可撓性アーム86および88は、拘束された状態へと内向きに押し進められ、タブ92および94を棒84の方へと内向きに引く。
ここで図9を参照すると、従動子96が保持部材80のレッグ86および88上を完全に前進すると、タブ92および94は、完全に内側の位置まで移動し、タブ92および94の近位面134および136を、側壁70および72の遠位面138および140から脱係合させる。これは、保持部材80を「ロック解除」して、この保持部材がそのロックされた位置から離れて移動することを可能にし、プッシュプレート82の圧力を、保持構成要素36の第一の端部40および第二の端部42から解放する。この状態で、第一の端部40および第二の端部42は、隙間溝44および46から引き抜かれ得、これによって、保持構成要素36およびバットレス材料のストリップ30をアンビル部材28から解放する。
従動子96が貫通可能な材料(例えば、プラスチック材料)から形成される状況においては、ナイフ刃142の遠位端144は、従動子96のバックスパン98を貫通する。ナイフチャネル54を通るナイフ刃142の近位への移動は、従動子96、および従って、保持部材80を引き、プッシュプレート82を保持構成要素36の第一の端部40および第二の端部42からさらに近位に引き離し、これによって、保持構成要素36をアンビル部材28からさらに解放する。このようにして、保持および解放機構60は、最初、保持構成要素36、および従って、バットレス材料のストリップ30をアンビル部材28に固定し、そして外科手術用器具10のその後の操作の際に、保持構成要素36およびバットレス材料のストリップ30がアンビル部材28から解放されることを可能にするように機能する。
種々の改変が、本明細書中に開示される実施形態に対してなされ得ることが理解される。例えば、本明細書中で上で留意されたように、保持構成要素の一端のみが、アンビル部材から自由に解放される必要があり、一方で、この保持構成要素または縫合糸の反対側の端部は、例えば接着剤の使用または締めスロット内への保持によって、アンビル部材に固定され得る。さらに、開示される保持部材は、1つのみの可撓性レッグを利用して、保持部材を遠位位置に固定し得る。さらに、ナイフ刃を本開示の従動子と係合させる他の手段(例えば、磁石、接着剤など)が提供されて、ナイフ刃が本開示のアンビル部材内で近位位置まで従動子を移動させることを可能にし得る。さらに、特定の実施形態において、別の起動棒またはプッシャーが提供されて、外科手術用ステープル留め器具10の起動とは無関係に、図1、図8および図9に関連して上で議論された保持部材80を解放する。従って、上記説明は、限定であると解釈されるべきではなく、単に、特定の実施形態の説明であると解釈されるべきである。当業者は、添付の特許請求の範囲の趣旨および範囲内で、他の改変を予測する。
10 外科手術用ステープル留め器具
12 ハンドル
14 細長管状部材
16 エンドエフェクタアセンブリ
20 バットレス付きアンビルアセンブリ
22 ステープルカートリッジ
24 トリガ
26 回転ノブ
28 アンビル部材
30 バットレス材料のストリップ
36 保持構成要素
38 バックスパン
40 第一の端部
42 第二の端部

Claims (19)

  1. 自身に設置された可動部分を有するハンドル;
    該ハンドルから遠位に延びる細長管状部材;
    該細長管状部材の遠位端に設置されたエンドエフェクタであって、該エンドエフェクタは、下側および上側を有する第一の部材を備え、該下側は面を有し、該エンドエフェクタは、ポケットおよび側壁を有する、エンドエフェクタ;
    該面に対して配置されたバットレス材料のストリップ;
    バックスパンならびに該バックスパンから延びる第一の端部および第二の端部を有する保持構成要素であって、該バックスパンは、該バットレス材料のストリップを横切って配置され、そして該第一の端部は、該エンドエフェクタの該下側から該上側まで延びる、保持構成要素;ならびに
    該エンドエフェクタの該上側に移動可能に設置された保持部材であって、該保持構成要素の該第一の端部は、該保持部材と該第一の部材との間に解放可能に固定され、該保持部材は、可撓性レッグおよびタブを有し、該タブは、該側壁に係合して、該保持部材をロックされた位置に維持し、該保持部材は、該ロックされた位置において該第一の端部と係合する、保持部材、
    を備える、外科手術用器具。
  2. 前記エンドエフェクタの前記上側がヘッドを備え、そして前記ポケットが前記ヘッドより近位に位置する、請求項1に記載の外科手術用器具。
  3. 前記保持部材が前記ポケット内で移動可能に設置され、そして前記保持構成要素の前記第一の端部が、前記ヘッドの近位面と該保持部材の遠位面との間に解放可能に固定される、請求項2に記載の外科手術用器具。
  4. 前記保持部材が遠位面を有するプッシュプレートを備え、前記保持構成要素の第一の端部が、該プッシュプレートの該遠位面と前記ヘッドの前記近位面との間に解放可能に固定される、請求項3に記載の外科手術用器具。
  5. 前記エンドエフェクタが隙間溝を備え、前記保持構成要素の前記第一の端部が、該隙間溝を通って、該エンドエフェクタの前記下側から該エンドエフェクタの前記上側まで通過する、請求項3に記載の外科手術用器具。
  6. 前記隙間溝が前記ポケットを通過する、請求項5に記載の外科手術用器具。
  7. 前記タブの近位面が、前記ロックされた位置において前記側壁の遠位面と係合する、請求項1に記載の外科手術用器具。
  8. 前記保持部材が、前記プッシュプレートから前記可撓性レッグの近位端まで延びる棒を備える、請求項4に記載の外科手術用器具。
  9. 前記可撓性レッグに係合して該可撓性レッグを拘束された状態まで移動させるように移動可能な従動子をさらに備える、請求項1に記載の外科手術用器具。
  10. 前記保持部材が第二の可撓性レッグを備え、該第二の可撓性レッグが第二の側壁と係合可能なタブを備える、請求項1に記載の外科手術用器具。
  11. 前記エンドエフェクタが第二の隙間溝を有し、前記保持構成要素の前記第二の端部が、該第二の隙間溝を通って、前記エンドエフェクタの下側から該エンドエフェクタの該上側まで通過する、請求項1に記載の外科手術用器具。
  12. 前記バットレス材料のストリップが、前記保持構成要素の前記第一の端部および前記第二の端部の通過のための第一の切り抜きおよび第二の切り抜きを備える、請求項1に記載の外科手術用器具。
  13. 前記エンドエフェクタが、アンビル部材および外科手術用ステープル留めカートリッジを有する、請求項1に記載の外科手術用器具。
  14. 前記第一の端部が前記隙間溝内で締められる、請求項5に記載の外科手術用器具。
  15. 前記エンドエフェクタがナイフスロットを有する、請求項1に記載の外科手術用器具。
  16. 前記バットレス材料のストリップの一部分が穿孔されている、請求項1に記載の外科手術用器具。
  17. 前記従動子が前記可撓性レッグを圧縮するように移動可能であり、そして前記保持部材が前記保持構成要素から離れるように移動することを可能にする、請求項9に記載の外科手術用器具。
  18. 前記従動子が貫通可能な材料から形成されている、請求項9に記載の外科手術用器具。
  19. ナイフの近位への移動が前記従動子を後方に引く、請求項9に記載の外科手術用器具。
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JP2011036654A (ja) 2011-02-24
AU2010203316A1 (en) 2011-03-03
EP2283782A1 (en) 2011-02-16
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US7988027B2 (en) 2011-08-02
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