JP2003000603A - 外科用組織ステープリング器具及び外科用ステープリング器具へのバットレス材料の取付け組立体 - Google Patents

外科用組織ステープリング器具及び外科用ステープリング器具へのバットレス材料の取付け組立体

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Publication number
JP2003000603A
JP2003000603A JP2002130857A JP2002130857A JP2003000603A JP 2003000603 A JP2003000603 A JP 2003000603A JP 2002130857 A JP2002130857 A JP 2002130857A JP 2002130857 A JP2002130857 A JP 2002130857A JP 2003000603 A JP2003000603 A JP 2003000603A
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Prior art keywords
tissue
stapling instrument
surgical stapling
buttress
assembly
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JP4226267B2 (ja
Inventor
Richard L Grant
リチャード・エル・グラント
Mark S Zeiner
マーク・エス・ゼイナー
Geoff Hueil
ジェオフ・ヒュエイル
Kenneth Wales
ケネス・ウェールズ
Dean L Garner
ディーン・エル・ガーナー
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Ethicon Endo Surgery Inc
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Ethicon Endo Surgery Inc
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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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00491Surgical glue applicators
    • 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
    • A61B17/11Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/115Staplers for performing anastomosis in a single operation
    • A61B17/1155Circular staplers comprising a plurality of staples
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00491Surgical glue applicators
    • A61B2017/00513Tissue soldering
    • 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
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03Automatic limiting or abutting means, e.g. for safety
    • A61B2090/037Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Materials For Medical Uses (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

(57)【要約】 【課題】 バットレス材料を外科用ステープリング器具
の組織クランプ部材に解放自在に取り付ける組立体を提
供する。 【解決手段】 この組立体は、これが外科用ステープリ
ング器具(20)上に配置されたときに、外科用ステー
プリング器具の組織クランプ部材の頂面(41)に連結
される実質的に剛性のフレーム(91)を有する。バッ
トレス材料(100)が、フレームの第1の側部及び第
2の側部に取り付けられていて、組立体が外科用ステー
プリング器具上に配置されたときに、外科用ステープリ
ング器具の組織クランプ部材の底面に当接するようにな
っている。

Description

【発明の詳細な説明】
【0001】
【発明の分野】本発明は一般に、複数の外科用ファスナ
ー又は締結具を組織中に付ける外科用締結器具に関し、
特に、組織内に補強された外科用ファスナーラインを形
成することを目的としてバットレス(支え)材料を外科
用締結器具に取り付ける新規な方法に関する。
【0002】
【発明の背景】多くの外科手技では組織の切除が行われ
る。かかる手技の1つは、気腫の治療のために肺の一部
を切除する肺容積減少術である。特にステープルの使用
と関連した身体組織の切除中に生じる1つの問題は、止
血の問題である。或る形式の身体組織、例えば、肺内に
見受けられる薄くて脆い組織が止血の問題を一層生じが
ちであり、疾患の状態によってはこれらの問題が深刻化
する場合がある。機械的器具、例えば外科用ステープラ
及びリニア(直線)カッタ(これらには開放型と内視鏡
利用型の両方がある)が、疾患のある肺組織を切除する
手段として利用される。ステープルは、脈管構造の止血
を可能にし、肺組織に付けられた場合には良好な度合の
空気遮断又は漏止め性(pneumostasis)をもたらす。外
科用ステープリング器具は、交換可能なカートリッジ中
に多数の互い違いの列をなして保持された複数のステー
プル及び少なくとも一方が可動の1対の互いに向かい合
ったジョーを有している。外科用ステープリング器具
は、肺組織をカートリッジとジョーとの間で圧平し、ス
テープルを切除されるべき肺の疾患部分に密接して圧平
状態の組織中へ発射する。切刃を成形されたステープル
の最も内側の列相互間で長手方向に通して組織を切断す
る。外科用ステープリング器具を手術部位から取り外
し、別の未発射状態のステープリングカートリッジを再
装填し、手順を繰り返してついには肺の所望の部分が切
除されて取り除かれるようにする。開放型リニアカッタ
の一例が、オハイオ州シンティナティ所在のエシコン・
エンド−サージェリィ(Ethicon Endo-Surgery)社に譲
渡され、1995年5月16日に発行された米国特許第
5,415,334号に開示されており、かかる米国特
許の開示内容を本明細書の一部を形成するものとしてこ
こに引用する。内視鏡利用型リニアカッタの一例が、オ
ハイオ州シンティナティ所在のエシコン・エンド−サー
ジェリィ社に譲渡され、1997年1月28日に発行さ
れた米国特許第5,597,107号に開示されてお
り、かかる米国特許の開示内容を本明細書の一部を形成
するものとしてここに引用する。
【0003】このように用いられる外科用ステープラの
利用と関連して知られているもう1つの問題は、ステー
プリング(ステープル留め)された肺組織内の空気漏れ
部の生成にある。漏れ部は、カットライン(切断線)及
び(又は)ステープル穴それ自体に生じる場合がある。
多くの場合、疾患のある肺組織は、薄くて脆いので、肺
が再び膨らむときにステープルのところで裂ける場合が
ある。これら空気漏れはなかなか無くならず、患者にと
って病院滞在期間が数週間延びる場合がある。これら漏
れの問題を解決する手段として、外科医は、バットレス
又は外科用綿撒糸材料を所望のステープリング部位に装
着し、バットレス材料を貫通してステープリングするこ
とによりステープルラインを補強している。バットレス
材料は、脆い組織に対する補強手段となる。組織は、ス
テープル穴に押し付けられ、その結果、空気遮断又は漏
止め性が増大する。これにより、ステープルラインのと
ころで組織が裂ける恐れが小さくなり、しかも、脆い組
織内でのステープルの引き抜け具合が減少する。これら
補強材料は代表的には、外科用ステープリング器具のジ
ョー部材に解放自在に取り付けられ、発射の際、補強材
料が肺組織にステープリングされるようになる。最適に
は、肺組織はこの補強材料の薄い層相互間で「サンドイ
ッチ」される。変形例として、バットレス材料を、多く
の他の外科手技、例えば、卵巣摘出術、胃バイパス、腸
組織の吻合又はステープルラインの補強又は組織中の止
血作用の増強を必要とする場合のある任意他の手技で使
用できるが、これらには限定されない。
【0004】バットレス材料を外科用ステープリング器
具のジョー部材に解放自在に取り付ける場合、それ特有
の問題が生じる。バットレス材料は、通常の手術中に脱
落しないように外科用ステープリング器具のジョーにし
っかりと取り付けられなければならず、しかも、ステー
プルの発射後、外科用ステープリング器具から容易に解
放又はリリースされなければならない。種々の接着剤及
び機械的取付け手段が知られている。接着剤と機械的取
付け手段の両方について以下に説明するが、これらは両
方とも欠点を持っている。
【0005】バットレス材料を接着剤でリニアカッタに
取り付ける器具の一例が、グラベナー(Gravener)氏等
に付与された米国特許第5,441,193号に記載さ
れている。この器具は、バットレス材料を生体適合性の
あるシアノアクリレート接着剤で外科用器具に取り付け
る。接着は、バットレス材料の縁部に沿って施され、ミ
シン目から成る破線がバットレス材料内に(接着剤線に
隣接して)配置され、接着剤が施されていないバットレ
ス材料の中央部分を接着剤が塗布された縁部から引き裂
くことができるようにする。しかしながら、接着剤が塗
布されたバットレス材料の部分は、器具から解放可能で
はない。その結果、バットレス材料を器具から(発射後
に)取り外すのは特に困難である。というのは、穿孔相
互間の材料の全てを同時に引き裂いて外科用ステープリ
ング器具を組織から取り外さなければならないからであ
る。
【0006】外科医が外科用器具を発射後に手術部位か
ら取り外すのを容易にするような仕方でバットレス材料
を外科用器具に解放自在に取り付ける接着剤が要望され
ている。フランシス(Francis)氏等に付与された米国
特許第5,752,965号は、使用直前に塗布しなけ
ればならない剥離性接着剤でバットレス材料又はストリ
ップを外科用ステープリング器具に取り付ける技術を教
示している。アラインメント器具を用いて、対をなすバ
ットレスストリップを整列させ、接着剤を各バットレス
ストリップの露出表面に塗布し、次に外科用ステープリ
ング器具のジョーを接着剤及びバットレスストリップ上
で閉じる。ジョーが開かれると、バットレス材料を粘着
性の液状接着剤で外科用ステープリング器具のジョー及
びカートリッジに取り付ける。粘着性液状接着剤は、ヒ
ドロキシプロピルメチルセルロース、ポリプロピレング
リコール及び水で構成されたものとして教示されてい
る。このようにバットレス材料を取り付けるのに剥離性
接着剤が用いられる場合があるが、粘着性液状接着剤の
接着効果は一時的である。加うるに、取付けプロセス
は、時間がかかり、発射のたびに取付け作業を繰り返さ
なければならない。最後に、粘着性接着剤が空気にいっ
たんさらされると、接着剤の揮発要素が蒸発し始める。
このことにより、手術直前又は手術中におけるこの粘着
性接着剤の塗布が制限される。
【0007】経時的にカラカラに乾かず又は劣化しない
剥離性接着剤が要望されている。かかる接着剤を用いる
と、バットレス材料を製造工場で外科用ステープリング
器具に取り付けることができ、その結果、時間とコスト
の両方の節約が得られる。レスリー・ハミルトン(Lesl
ie Hamilton)氏等によって出願された欧州特許出願公
開明細書EP1064883A1は、半結晶質固体又は
粘着性液体(蜂蜜に似た稠度(consistency)のもので
ある)である無毒の生体吸収性脂肪族エステルポリマー
の剥離性接着剤を教示している。この接着剤は、体温
(37℃)で流動性であり、好ましくは、室温(25
℃)で流動性であることを特徴としている。しかしなが
ら、この接着剤は、トラック、輸送コンテナ、貨車及び
倉庫内でしばしば遭遇する高い温度(50℃まで)では
非常に高い流動性を示すようになる場合がある。高温条
件下では、接着剤は、器具の他の部分又は器具の包装材
に移着する場合があり、この移着により、接着層の強度
が減少する場合がある。
【0008】上記説明から分かるように、バットレス材
料を接着剤で外科用ステープラに取り付ける場合、多く
の問題が生じる場合がある。また、外科用ステープリン
グ器具へのバットレス材料の機械的取付け方法も当該技
術分野において周知であり、接着剤を用いた場合の問題
を解決している。多くの機械的取付け方法が存在してお
り、普及している方法の1つは、外科用ステープリング
器具のクランプ部材上にスリーブを配置することであ
る。スリーブを、可撓性の布又は織物、例えばバットレ
ス材料で形成するのがよく、或いは、別の布又は織物に
取り付けられたバットレス材料の剥離可能なストリップ
を有していてもよい。これらスリーブのうちの多くは、
クーパー(Cooper)氏等に付与された米国特許第5,5
03,638号、レイバーン(Rayburn)氏等に付与さ
れた米国特許第5,702,409号、レイバーン氏等
に付与された米国特許第5,810,855号、マッキ
ーン(McKean)氏等に付与された米国特許第5,96
4,774号に記載されている。
【0009】スリーブを効果的に用いるとバットレス材
料を外科用ステープリング器具のエンドエフェクタに取
り付けることができるが、スリーブは手術中に他の合併
症を引き起こす場合がある。例えば、スリーブがバット
レス材料の中実スリーブで作られている場合、外科用ス
テープリング器具の発射を行うと、バットレス材料と組
織がステープリングされ、ステープルライン相互間でバ
ットレススリーブと組織が切離される。この作用によ
り、組織の部分(カットラインの各側の組織部分)がバ
ットレス材料のシートにより互いに取り付けられたまま
になる。これにより、外科医が介入してバットレスの切
断スリーブを切断し、切断した組織を分離し、バットレ
ス材料の望ましくない部分を取り除く必要がある。
【0010】長期間にわたって有効なままであり、製品
の遭遇しがちなあらゆる温度で作用発揮状態を保ち、外
科用ステープリング器具から容易に解放される外科用ス
テープリング器具へのバットレス材料の解放自在な取付
け手段が要望されている。
【0011】
【発明の概要】本発明によれば、外科用ステープリング
器具の組織クランプ部材にバットレス材料を解放自在に
取り付ける組立体が開示される。この組立体は、これが
外科用ステープリング器具上に配置されたときに、外科
用ステープリング器具の組織クランプ部材の頂面に連結
される実質的に剛性のフレームを有する。バットレス材
料が、フレームの第1の側部及び第2の側部に取り付け
られていて、組立体が外科用ステープリング器具上に配
置されたときに、外科用ステープリング器具の組織クラ
ンプ部材の底面に当接するようになっている。
【0012】本発明の新規な特徴は特許請求の範囲に具
体的に記載されている。しかしながら、本発明はそれ自
体、構造及び操作方法に関し、その別の目的及び利点と
共に、添付の図面を参照して以下の説明を読むと最もよ
く理解できよう。
【0013】
【実施形態の詳細な説明】次に、図面を参照すると(図
中、同一の符号は同一の要素を示している)、図6は、
本発明に従って構成された外科用ステープリング器具2
0を示している。器具20は、有孔バットレスストリッ
プ100をエンドエフェクタ35に解放自在に取り付け
る本発明のアンビルキャリヤ90を有している。図示の
外科用ステープリング20は、管内用カッタ(endocutt
er)であり、身体組織をクランプしたりステープリング
したり切断したりするためのものとして当該技術分野で
は周知である。変形例として、外科用ステープリング器
具20は、多くの他の締結器具のうちの1つ、例えば、
円形ステープラ、ステープラ、クリップアプライヤ、或
いは1回又は複数回の発射を行うことができる多数の他
の締結又はステープリング器具のうちの何れであっても
よい。ステープル又はファスナーを、外科用ステープリ
ング器具と一体に形成されたステープルカートリッジ又
は発射して交換することができ、それにより同一の外科
用締結器具からの多数回の発射を可能にする着脱自在な
ステープルカートリッジ内に収納することができる。本
発明の組立体は、図6乃至図11に示されている。
【0014】外科用ステープリング器具20は、オペレ
ータが掴む取っ手25、取っ手25から遠位側へ延びる
細長いシャフト30及びシャフト30から遠位側へ延び
るエンドエフェクタ35を有している。エンドエフェク
タ35は、第1の組織クランプ部材及び第2の組織クラ
ンプ部材を有し、これらクランプ部材は、組織をこれら
の間に受け入れる開き位置と、組織をこれらの間でステ
ープリングする閉じ位置との間で動くことができる。第
1の組織クランプ部材は、シャフト30から延びる固定
チャネル31及びチャネル内に設けられた着脱自在なス
テープルカートリッジ45を有している。第2の組織ク
ランプ部材は、第2の組織クランプ部材と向かい合った
可動アンビル40である。ステープルカートリッジ45
は、固定チャネル31内に配置された状態で示されてお
り、かかるカートリッジ内には複数のステープル49が
収容されている。可動アンビル40は、取っ手25から
延びるクロージャトリガ26に操作的に取り付けられて
おり、クロージャトリガ26の動きに応動する。クロー
ジャトリガ26を図6に示す開き位置から取っ手25の
グリップ27に向かって動かすと、アンビル40は図6
の開き位置から着脱自在なステープルカートリッジ45
に隣接した閉じ位置(図示せず)に動く。発射トリガ2
8をクロージャトリガ26に向かって動かすと(クロー
ジャトリガ26及びアンビル40は閉じ位置にあると
き)、着脱自在なステープルカートリッジ45内に入っ
ている複数のステープル49は押し出される。ステープ
ル49は、着脱自在なステープルカートリッジ45から
バットレスストリップ60,61を貫通して打ち出さ
れ、アンビル40に当たってしっかりとした“B”字形
の状態(図示せず)に成形される。外科用ステープリン
グ器具20の一例は、オハイオ州シンシナティ・クリー
クロード4545所在のエシコン−エンド・サージェリ
ィ社によって製造されたTSB35エンドパス(Endopa
th:登録商標)ETS内視鏡型リニアカッタである。外
科用ステープリング器具20及び着脱自在なステープル
カートリッジ45は概要が共通譲受人の米国特許第5,
597,107号に記載されており、かかる米国特許の
記載内容を本明細書の一部を形成するものとしてここに
引用する。
【0015】図6に示すように、第1のバットレススト
リップ60は、着脱自在なステープルカートリッジ45
の第1の組織クランプ表面46に解放自在に取り付けら
れている。バットレスストリップ60を多種多様なバッ
トレス材料から形成することができ、かかるバットレス
材料としては、ニュージャージー州サマービル所在のエ
シコン・インコーポレイテッド(Ethicon, Inc.)製の
ビクリル(VICRYL:登録商標)、ミズーリ州セントルイ
ス所在のシャーウッド−デイビス・アンド・ゲックス
(Sherwood-Davis and Geck)社製のデキソン(DEXON:
登録商標)、及びデラウェア州ウィルミントン所在のデ
ュポン社(DuPont de Nemours & Co.)製のテフロン
(登録商標)が挙げられる。加うるに、他の材料として
は、動物材料、例えば、なめし牛心膜、生体適合性のあ
るエラストマー、例えば、英国ガーグレーブ所在のエシ
コン・インコーポレイテッド製のε−カプロラクトング
リコリド(ε−caprolactone glycolide)、又は多くの
適当なバットレス材料のうちの何れか一が挙げられる。
適当なε−カプロラクトングリコリド材料又はフォーム
は、特に関心のあるものであり、米国特許第5,46
8,253号に記載されており、かかる米国特許の記載
内容を本明細書の一部を形成するものとしてここに引用
する。本発明の目的は、バットレスストリップ60,6
1を長期間にわたり、最高2年以上にわたって外科用ス
テープリング器具20の少なくとも一部に解放自在に取
り付けることにある。
【0016】ホットメルト接着剤を用いるバットレスス
トリップの取付け 図2乃至図4は、本発明の固体接着剤65を用いてバッ
トレスストリップ60,61をエンドエフェクタ35の
第1のクランプ表面46及び第2のクランプ表面41に
それぞれ解放自在に取り付ける段階を示している図であ
る。固体接着剤65は、室温(25℃)で固体であり、
体温(37℃)で固体であり、高い温度では溶融可能で
ある。この種の接着剤は、ホットメルト接着剤と呼ばれ
ており、接着又は糊付け作業の際、溶融状態の接着剤6
6として塗布される。溶融接着剤66が冷えると、これ
は固体接着剤65の状態に戻り、接着層を形成する。図
2乃至図4では、外科用ステープリング器具20のエン
ドエフェクタ35が拡大状態で示されており、アンビル
40は、分かりやすくするためにこれを断面にして回転
させた状態で示されている。変形例として、ホットメル
ト接着剤65を溶剤で溶融した状態で用いてバットレス
ストリップ60,61を外科用ステープリング器具20
にくっつけてもよい。溶剤が溶融状態の接着剤66から
蒸発すると、これは固体ホットメルト接着剤65の状態
に戻り、バットレスストリップ60,61を外科用ステ
ープリング器具20に取り付ける。
【0017】図2は、アプリケータ70を用いて溶融接
着剤66を第1のクランプ表面46及び第2のクランプ
表面41に塗布する第1段階を示している図である。ア
プリケータ70は、取っ手72、溶融接着剤66を放出
するための遠位側ノズル71、取っ手72内に収納され
ていて、固体接着剤65の遠位端部を溶融させる抵抗加
熱装置75(図示せず)及び電気コード74を有してい
る。電気コード74を電源80に取り付けると、抵抗加
熱装置75の通電が行われる。取っ手72は、抵抗加熱
装置75に隣接して設けられた過熱防止のための冷却ス
ロット77を有している。これらの形式のグルー又は接
着剤アプリケータ70は、ホットメルトグルーガンとし
て当該技術分野では周知であり、商業用又は家庭用とし
て入手容易である。ホットメルトグルーガン又は接着剤
アプリケータ70の優れた例は、イリノイ州60084
ワウコンダ所在のFPLコーポレイション製のシュワー
・ボンダー(SHURE BONDER:登録商標)プロ9000グ
ルーガンである。
【0018】図2では、固体接着剤65のロッドが、取
っ手72の近位端部のところに設けられた開口部中に挿
入された状態で示されている。固体接着剤65のロッド
を挿入すると、このロッドは、アプリケータトリガ73
に操作自在に結合されている送り機構(図示せず)に操
作自在に係合する。アプリケータトリガ73を作動させ
ると、固体接着剤65のロッドは取っ手内で遠位側へ動
き、ついには、高温状態の抵抗加熱装置75に接触して
固体接着剤65のロッドの遠位側部分が融けるようにな
る。アプリケータトリガ73にさらに圧力を加えると、
溶融状態の接着剤66がノズル71のオリフィス76か
ら押し出されると共に、固体接着剤65のロッドがアプ
リケータ70中へ遠位側へ動く。ホットメルトグルーガ
ン又はアプリケータ70は、固体接着剤65を塗布する
好ましい方法を実施する際に用いられるが、別の接着剤
アプライヤが利用可能である。これら別の接着剤アプラ
イヤとしては、接着剤の溶融リボンを塗布する加圧溶融
型グルーディスペンサ、溶融状態の液滴のスプレーを吹
き付けるスプライヤ及び溶融接着剤のフィルムを被着さ
せるホットローラが挙げられるが、これらには限定され
ない。
【0019】図2では、アプリケータ70は、溶融接着
剤66の数本の線をカートリッジ45及びアンビル40
のそれぞれの第1の組織クランプ表面46及び第2の組
織クランプ表面41に付着させる状態で示されている。
溶融接着剤は、バットレスストリップ60,61を付着
させる段階の実施前にこれら表面に塗布される。溶融接
着剤66は、第2の組織クランプ表面41上にこれにエ
ンボスされたステープルポケット42相互間で塗布され
た状態で示されている。溶融接着剤66の2本の線は、
第2の組織クランプ表面41上では短い状態に保たれ、
第1のバットレスストリップ60を第2の組織クランプ
表面41に取り付けるが、第1のバットレスストリップ
60を容易に取り外すことができるのに十分な保持力を
もたらす。
【0020】溶融接着剤66のこれよりも長い2つの列
が、ステープルスロット47の長手方向列相互間で着脱
自在なステープルカートリッジ45の第1の組織クラン
プ表面46上に配置された状態で示されている。各ステ
ープルスロット47は、着脱自在なステープルカートリ
ッジ45内の深いところに位置する第1の引込み位置か
ら第1の組織クランプ表面46から延びる第2の位置に
動くことができるピストン状のステープル打込み装置4
8(図示せず)を有している。図2及び図3では、ステ
ープル打込み装置48は、着脱自在なステープルカート
リッジ45のステープルスロット47内の深いところに
位置する第1の引込み位置にある。“U”字形ステープ
ル49(図示せず)が各ステープルスロット47内でこ
の中に引っ込められているステープル打込み装置48の
頂部上に配置されている。ステープル打込み装置48を
第2の位置に動かすと、ステープル49は着脱自在なカ
ートリッジ45から突き出される。これらの図におい
て、ステープル打込み装置48及びステープル49は、
ステープルスロット47内に引っ込められて位置してい
るので見えない。ステープルカートリッジ45の構造並
びにステープル打込み装置48及びステープル49の動
かし方は、当該技術分野で周知であり、ウイリアムソン
・フォース(Williamson IV)氏等に付与された米国特
許第5,415,334号に見ることができ、かかる米
国特許の記載内容を本明細書の一部を形成するものとし
てここに引用する。
【0021】図3に示すように、溶融接着剤66をいっ
たん塗布すると、第2の段階として、バットレスストリ
ップ60,61をこれらにそれぞれ対応した組織クラン
プ表面46,41上に取り付ける。第1のバットレスス
トリップ60及び第2のバットレスストリップ61は、
第1の組織クランプ表面46、第2の組織クランプ表面
41及び溶融接着剤66に向かって動いている状態で示
されている。図4は、バットレスストリップ60,61
を定位置に配置し、そしてそれぞれ対応関係にあるクラ
ンプ表面46,41に押し付ける接着作業の最終段階を
示している図である。バットレスストリップ60,61
を定位置に押し付けると、溶融接着剤66はバットレス
ストリップ61とクランプ表面46,41との間で圧縮
され、放冷されて固体接着剤65の状態に戻り、バット
レスストリップ60,61を外科用ステープリング器具
20に取り付ける。
【0022】外科用ステープリング器具20の発射操作
を行うと、ステープル打込み装置48がカートリッジ4
5内の第1の位置から第2の位置、即ち、第1の組織ク
ランプ表面46から伸長した位置に動く。この動作と同
時に、ステープル49が持ち上がってアンビル40に当
たって成形されると共に第1のバットレスストリップ6
0が上方に持ち上げられてカートリッジ45の第1の組
織クランプ表面46から遠ざけられる。第1のバットレ
スストリップ60の上方運動により、第1のバットレス
ストリップ60と第1の組織クランプ表面46との接着
層が壊れ、それにより、第1のバットレスストリップ6
0がステープルカートリッジ45から離される。
【0023】変形例として、一般に溶融接着剤66をス
テープルスロット47内に配置し、第1のバットレスス
トリップ60をカートリッジ45上に取り付けることに
よりバットレスストリップ60をカートリッジ45に付
着させることができる。溶融接着剤を2つの互いに異な
る方法でステープルスロット47内に配置することがで
きる。第1の方法として、ホットメルトをホットメルト
グルーガンを用いて直接ステープルスロット47内に注
入し、バットレスストリップ60をステープルスロット
47(図示せず)にくっつけることができる。第2の方
法として、溶融接着剤66をステープルスロット47に
隣接して第1の組織クランプ表面46上に配置し(図
3)、第1のバットレスストリップ60を第1の組織ク
ランプ表面46に押し付けることによりこれをステープ
ルポケット48内に押し込むことにより、溶融接着剤6
6はステープルポケット48に入ることができる。押し
付け操作により、溶融接着剤66の大部分が第1の組織
クランプ表面46から押し出されて隣接のステープルス
ロット47内に押し込まれ、バットレスストリップ61
をステープルスロット47と第1の組織クランプ表面4
6(図示せず)の両方にくっつける。固体接着剤65が
ステープルスロット47内に位置した状態で外科用ステ
ープリング装置20の発射操作を行うと、ステープル打
込み装置48及びステープル49は、ステープルスロッ
ト47内で上方に動き、この中に入っている固体接着剤
65に接触する。運動中のステープル打込み装置48と
ステープル49の接触により、固体接着剤65がスロッ
ト47から押し出され、第1のバットレスストリップ6
0と着脱自在なステープルカートリッジ45との間の接
着層が壊れる。
【0024】かくして、本発明の固体接着剤65は、外
科用ステープリング器具20の発射操作を用いることに
よりステープルカートリッジ45と第1のバットレスス
トリップ60との間の接着層を壊したとき、剥離性接着
剤となる。ステープリング器具20の発射操作を用いて
接着層を壊すことは、接着剤成分には依存しないという
ことに注目することは重要である。すなわち、多種多様
な接着剤を上述の方法で剥がすことができる。ホットメ
ルト接着剤に加えて、他の接着剤を室温で塗布すること
ができ、かかる接着剤としては、例えば、エラストマー
化合物、RTVシリコーン、天然及び合成ゴム、嫌気性
配合物、シーラント、成形可能な配合物、例えば、歯科
用ダム配合物、又は展性材料、例えばワックスのような
接着剤が挙げられる。加うるに、上述の接着剤又は多数
の他の接着剤、例えば、アクリル樹脂系接着剤、シアノ
アクリレート系接着剤、エポキシ樹脂接着剤等のうち何
れでも接着抑制剤と共に用いることができる。接着抑制
剤は、接着層の強さを減少させるバリヤとして働き、か
かる接着抑制剤としては、油、グリース、ワックス、離
型剤、テフロン(登録商標)、シリコーン又は接着強度
を抑制する任意の他の表面汚染物質が挙げられる。
【0025】ステープル49を着脱自在なステープルカ
ートリッジ45から突き出すと、第2のバットレススト
リップ61も第2の組織クランプ表面41から離され、
“U”字形ステープル49が“B”の形状になる。
“U”字形ステープル49は、これらを第2の組織クラ
ンプ表面41に取り付けられている第2のバットレスス
トリップ61中に打ち込んでアンビル40内のステープ
ルポケット42に打ち当てることにより“B”の形に成
形される。ステープル49のワイヤをステープルポケッ
ト42内に押し込むと、ステープルワイヤの端部がくる
りとカールして“B”の形になり、固体接着剤65をス
テープルポケット42及び第2の組織クランプ表面41
から脱落させる。この動作により、第2のバットレスス
トリップ61がアンビル40(図示せず)から離脱され
る。
【0026】図5は、溶融接着剤66を用いてバットレ
ス材料を円形ステープラ85に取り付けている状態を示
している図である。バットレスリング86が、溶融接着
剤66でバットレスリング86を第1の円形圧縮表面8
7及び第2の円形圧縮表面88に接着させる段階の直前
状態で、円形圧縮表面87,88から離れて分解図の状
態で示されている。図5では、溶融接着剤66は、第1
の圧縮表面87に塗布されるので見えなくなる。
【0027】ホットメルト接着剤配合物 固体接着剤65は、市販の種々のホットメルト接着剤の
うち何れであってもよい。ホットメルト接着剤は、身体
組織と生体適合性があり、天然又は合成のものであるこ
とが好ましい。天然生物重合体及び特に多数の生体蛋白
質をホットメルト接着剤として用いることができる。こ
れら蛋白質としては、コラーゲン、ゲラチン、フィブリ
ン、フィブロネクチン、フィブリノーゲン、エラスチ
ン、血清、アルブミン、ヘモグロビン、オバルブミン等
又はこれらの任意の組合せが挙げられる。さらに、多糖
類、例えば、ヒアルロン酸、コンドロイチン硫酸、ヒド
ロキシルスターチ、ヒドロキシルセルロース、ヒドロキ
シプロピル−セルロース、カルボキシル−セルロース、
チキン/キトサン、アガロース及びアルギネートを単独
で又は他の物質と組み合わせて用いることができる。
【0028】合成材料としては、ポリ(乳酸)、ポリ
(グリコール酸)、ポリ(ヒドロキシブチレート)、ポ
リ(ホスファジン)、ポリエステル、ポリエチレングリ
コール、ポリエチレンオキシド、ポリアクリルアミド、
ポリヒドロキシエチルメタクリレート、ポリビニルピロ
リドン、ポリビニルアルコール、ポリアクリル酸、ポリ
アセテート、ポリカプロラクトン、ポリプロピレン、ナ
イロン等が挙げられる。また、適当な生体適合性で生体
吸収性のポリマーとしては、脂肪族ポリエステル、ポリ
(アミノ酸)、コポリ(コーテル−エステル)、ポリア
ルキレンオキサレート、ポリアミド、チロシン誘導ポリ
カーボネート、ポリ(イミノカーボネート)、ポリオル
トエステル、ポリアキサエステル、ポリアミドエステ
ル、アミノ基を含むポリオキサエステル、ポリ(無水
物)、ポリホスファゼン、生体分子(即ち、生体重合
体、例えば、コラーゲン、エラスチン、生体吸収性スタ
ーチ等)及びこれらの配合物から成る群から選択された
ポリマーが挙げられるが、これらには限定されない。
【0029】固体接着剤65について特に関心のあるも
のは、約40℃以下の温度で固体のコポリマーである。
好ましいコポリマーは、ε−カプロラクトン又はトリメ
チレンカーボネート及びグリコリドのコポリマーであ
る。最も好ましくは、コポリマーは、ε−カプロラクト
ンとグリコリドのコポリマーである。ε−カプロラクト
ンの量は、30重量%乃至45重量%であり、残部がグ
リコリドであるのがよい。理想的には、コポリマーは、
36:64(モル/モル)〔ポリ(ε−カプロラクトン
−コ−グリコリド)〕で構成されたものであるのがよ
い。コポリマーは、陽子NMRスペクトグラフィーによ
って定められる1%未満の未反応モノマーを含むエラス
トマーである。内部粘度は、25℃でヘキサフルオロイ
ソプロパノール(HFIP)の0.1g/dL溶液中で
定量され、約0.8g/dL乃至約3.2g/dL、好
ましくは約0.6g/dL乃至約2.4g/dL、最も
好ましくは約1.6g/dLである。特に好ましい実施
形態では、好ましい固体接着剤と好ましいバットレス材
料の両方を、同一の生体吸収性材料であるε−カプロラ
クトングリコリドで作るのがよい。
【0030】固体接着剤65は、最高40℃までの温度
では固体であるという特徴を備えているのがよく、4
0.1℃乃至600℃の高温状態では劣化を生じること
なく溶融するものである。より好ましい接着剤は、12
0℃乃至240℃の高温、最も好ましくは180℃で劣
化を生じないで溶融する固体接着剤65である。上述の
コポリマーを米国特許第5,468,253号、同第
5,133,739号及び同第4,605,730号の
教示内容に従って調製するのがよく、これら米国特許の
記載内容を明細書の一部を形成するものとしてここに引
用する。
【0031】バットレスストリップをアンビルに取り付
ける変形例としての器具及び方法 図6乃至図11は、バットレスストリップを図1の外科
用ステープリング器具20のアンビル40に取り付ける
別の器具及び方法を示している図である。図6は、アン
ビルキャリヤ90がアンビル40に固定され、バットレ
スストリップがアンビルキャリヤ90に着脱自在に取り
付けられた外科用ステープリング器具20を示している
図である。アンビルキャリヤ90は、アンビル40上に
摺動し、完全に取り付けられるとアンビル40上にロッ
クする。ロックをアンビルキャリヤ90の取り外し又は
交換のために容易に解除することができる。
【0032】図7乃至図9に最もよく示されているよう
に、アンビルキャリヤ90は、フレーム又はキャリヤシ
ェル91及び有孔バットレスストリップ100から組み
立てられている。キャリヤシェル91は中空であり、ア
ンビル40上で滑って動くようになっており、逆“U”
字形キャリヤ本体92を有し、これから遠位側へ延びる
ノーズ95を有している。ノーズ95は、手術部位への
外科用ステープリング器具20の配置の際、組織の損傷
を防止するよう尖っておらず或いは非外傷性であるのが
よい。ばね部材96が、ノーズ95をキャリヤ本体92
の遠位端部に連結している。ロック又は保持特徴部97
が、ノーズ95の内面(図示せず)上に配置されてアン
ビルキャリヤ90と外科用ステープリング器具20のア
ンビル40を解除自在に係合させるようになっている。
保持特徴部97は、外科用ステープリング器具20のア
ンビル40上に設けられた凹状特徴部(図示せず)と嵌
合関係をなして係合する凸状ディンプル又はリブである
のがよい。ノーズ95をアンビル40から持ち上げて離
すと(保持特徴部97がアンビル40と係合していると
き)、ばね部材96が偏向し、保持特徴部97がアンビ
ル40上の凹状嵌合特徴部から持ち上げられ、キャリヤ
シェルがアンビル40からロック解除される。複数の取
付け特徴部、例えば、“L”字形フック93が、キャリ
ヤ本体92の各側上で下方に延び、アーム94が“L”
字形フック93の垂直部分又は第1の部材93aから遠
位側の方向へ水平方向に延びている。フック93が好ま
しい実施形態であるが、スパイク、アーム、タブ、ボス
又は多数の解除自在な手段のうちどれを追加的にキャリ
ヤシェル91に設けてもよい。キャリヤシェル91は、
剛性又は半剛性の材料、例えば、エンジニアリングプラ
スチックで作られたものであるのがよく、かかるエンジ
ニアリングプラスチックの例としては、液晶ポリマー、
ポリカーボネート、ポリスチレン、又は多くの適当な医
用エンジニアリング熱成形プラスチック又は熱硬化性プ
ラスチックのうちのどれかが挙げられる。加うるに、キ
ャリヤシェル91を任意の金属材料、例えば、アルミニ
ウム、鋼、ステンレス鋼、銅又はこれらの組合せ及びこ
れらの合金から形成してもよい。
【0033】有孔バットレスストリップ100は、上述
のバットレス材料のうちの何れかから形成された矩形シ
ートであり、列状の互いに間隔を置いた開口部101が
これを貫通して延びている。有孔バットレスストリップ
100は、各水平方向アーム94を有孔バットレススト
リップ100のそれぞれ対応した開口部101に完全に
通してついには開口部101を“L”字形フック93の
第1の部材93a又は垂直部分に接触させるようにする
ことにより、キャリヤシェル91上に取り付けられる。
有孔バットレスストリップ100をキャリヤシェル91
に対して遠位側に動かすことにより、開口部101がア
ーム94から外れて有孔バットレスストリップ100が
キャリヤシェル91から解放される。かくして、有孔バ
ットレスストリップ100は、一方向直線運動によりキ
ャリヤシェル91から離脱可能である。図7には、有孔
バットレスストリップ100をアーム94に取り付ける
際の開口部101の経路を示す矢印が示されている。
【0034】図8は、有孔バットレスストリップ100
とキャリヤシェル91の好ましい組立体を示す等角図で
ある。この組立体では、フック93のアーム94は各
々、有孔バットレスストリップ100のそれぞれ対応関
係にある開口部101内に配置された状態で示されてい
る。アーム94を開口部101と組み合わせると開口部
101内へのアーム94の配置に起因して、僅かなレベ
ルのディンプル又は窪みが有孔バットレスストリップ1
00の縁部のところに生じる。アンビルキャリヤ90の
好ましい組立体をアンビル40上に取り付けると、有孔
バットレスストリップ100はアンビル40の第2のク
ランプ表面41によりキャリヤシェル91から離れてテ
ント状になり、有孔バットレスストリップ100が平ら
になる。
【0035】図9は、有孔バットレス100とキャリヤ
シェル91の別の組立体の断面図である。この図では、
有孔バットレスストリップ100の縁部は、開口部10
1の各列に沿って上方に折り曲げられて全体として
“U”字形になっている。次に、“U”字形有孔バット
レスストリップ100の垂直方向側部をフック93の内
部に配置し、アーム94の各々をこれらとそれぞれ対応
関係にある開口部101内に通す。この取付け法によ
り、取付け状態の有孔バットレスストリップ100上に
全体として平らな水平断面が得られる。
【0036】手術の際、アンビルキャリヤ90を以下の
ようにして用いる。アンビルキャリヤ90(有孔バット
レスストリップ100を含む)を外科用ステープリング
器具20の開き状態のアンビル40上に滑らせる。次
に、アンビル40を閉じ、外科用ステープリング器具2
0のエンドエフェクタ35を患者の体内に挿入する。ア
ンビル40を開き、エンドエフェクタを選択された手術
部位のところで組織中に配置する。アンビル40を閉じ
て組織をアンビル40の第2のクランプ表面41と着脱
自在なステープルカートリッジ45の第1のクランプ表
面46との間でクランプする。外科用ステープリング器
具20の発射操作を行い、有孔バットレスストリップ1
00を組織にステープリングし、組織及びバットレスス
トリップをステープルライン相互間で切断する。アンビ
ル40を開き、外科用ステープリング器具20を手術部
位から近位側へ引き離す。外科用ステープリング器具2
0を取り出すと、ステープリングされた有孔バットレス
ストリップ100は、組織に取り付けられたままであ
り、キャリヤシェル91のアーム94を有孔バットレス
ストリップ100の開口部101から滑らせて出し、そ
れにより、有孔バットレスストリップ100を外科用ス
テープリング器具20から解放する。外科用ステープリ
ング20に新しいアンビルキャリヤ90を再装填するた
め、外科医は、外科用ステープリング器具20を患者か
ら取り出さなければならない。次に、外科医は、ノーズ
95を持ち上げることにより、使用済みキャリヤシェル
91をアンビル40から取り外して保持特徴部97をア
ンビル40からロック解除し、そして、キャリヤシェル
91をアンビル40から滑らせて外す。新しいアンビル
キャリヤ90をアンビル40上に滑らせて再装填作業を
終了させる。
【0037】図10は、アンビル40と有孔バットレス
ストリップ100の両方から離脱させると同時に有孔バ
ットレスストリップ100を操作中外科用ステープリン
グ器具20から解放させることができる着脱自在なキャ
リヤシェル191の変形実施形態を示している図であ
る。着脱自在なキャリヤシェル191は、細長いキャリ
ヤ本体92と、アーム194及びこれから延びる第1の
部材193aを備えたフック193と、ノーズ195と
を有している。突起198が、キャリヤシェル191の
近位端部から延びており、突起116に固定的に取り付
けられた長い縫合糸又はケーブル199を有している。
有孔バットレスストリップ100を、上述すると共に図
8及び図9に示した方法の何れかで着脱自在なキャリヤ
シェル115と組み合わせることができる。
【0038】手術の際、有孔バットレスストリップ10
0が取り付けられた着脱自在なキャリヤシェル191を
エンドエフェクタ35のアンビル40上に滑らせる。次
に、ケーブル199をシャフト30に沿って着脱自在な
キャリヤシェル191から近位側へ延ばし、外科用ステ
ープリング器具20の取っ手25に隣接した自由端部で
終端させる。エンドエフェクタ35を(トロカールを介
して)患者の体内に配置することにより、ケーブル19
9の自由端部は患者の体外に位置したままになる。エン
ドエフェクタ35を組織にクランプし、外科用ステープ
リング器具20の発射操作を行った後、ケーブル199
を引っ張ることにより有孔バットレスストリップ100
を外科用ステープリング器具20から解放する。ケーブ
ル199を引っ張ると同時に、着脱自在なキャリヤシェ
ル191が遠位側へ動き、アンビル40から離脱する。
着脱自在なキャリヤシェル191が遠位側へ動くと、ア
ーム194は有孔バットレスストリップ100の開口部
101から引き抜かれ、有孔バットレスストリップ10
0は着脱自在なキャリヤシェル191及びアンビル40
から解放される。アンビル40を開くと、有孔バットレ
スストリップ100及びこれに取り付けられた組織がエ
ンドエフェクタ35から解放される。次に、ケーブル1
99を用いて使用済み着脱自在なキャリヤシェル115
をトロカールを介して患者から抜き出す。
【0039】図11は、有孔バットレスストリップをス
テープリング器具である円形ステープラ85に着脱自在
に取り付ける更に別の実施形態を示している図である。
この実施形態では、バットレスストリップを上述の直線
運動ではなく回転運動により円形ステープリング器具か
ら解放する。図示のように、円形ステープラ85は、開
き状態の円形アンビル89及び長手方向軸線を有してい
る。取付けリング105が、円形アンビル89に取り付
けられ又はこれから形成されている。タブフック106
が、取付けリング105から器具の本体に向かって遠位
側へ延びており、タブアーム106aを有している。タ
ブアーム106aは、タブフック106から円形アンビ
ル89の周囲にぐるりと同じ反時計回りの方向に延びて
いる。タブフック106は、半径方向外方に互いに間隔
を置いていて、円形アンビル85がタブフック106を
押し潰すことなく完全に閉じることができるようになっ
ている。
【0040】有孔バットレスリング107が、円形アン
ビル89から延びるタブフック106に取り付けられる
ように設けられている。複数のタブ108が、有孔バッ
トレスリング107の周囲の周りにぐるりと間隔を置い
て設けられ、タブ開口部109が各タブ108を貫通し
て延びている。図示のように、有孔バットレスリング1
07の周囲の周りに等間隔を置いて配置された4つのタ
ブ108及びこれと同数のタブフック106が設けられ
ている。有孔バットレスリング107を取付けリング1
05のタブフック106に着脱自在に取り付けるため、
タブ開口部109をタブアーム106a上に配置し、有
孔バットレスリング107を時計回りの方向に回転させ
る。これと同様に、反時計回りの方向に回転させると、
取付け状態の有孔バットレスリング107が取り外され
る。変形例として、タブアーム106aは、時計回りの
方向に延びてもよく、この場合、有孔バットレスリング
107を、取付けのために反時計回りの方向に、取外し
のためには時計回りの方向にそれぞれ回転させる。有孔
バットレスリング107を組織にステープリングした
後、円形アンビル89を開き、円形ステープラ85を時
計回りの方向に回転させてアーム94をタブ開口部から
引き抜き、有孔バットレスリング107を円形ステープ
ラ85から解放する。円形ステープラ85はシングルシ
ョット型器具なので、取付けリング105を円形アンビ
ル89に永続的に又は着脱自在に取り付けるのがよい。
変形例として、有孔バットレスリング107を、タブフ
ック106が遠位側へ延びた状態で(図示せず)第2の
取付けリング105を第1の円形圧縮表面88に隣接し
て取り付けることにより第1の円形圧縮表面88上に取
り付けてもよい。取付けリング105を第1の円形圧縮
表面88と第2の円形圧縮表面87の両方に隣接して取
り付ける場合、取付けリングフックの両方の組を開口さ
せると共にアーム94を両方の取付けリング105上で
同一方向に配向させる(図示せず)よう注意する必要が
ある。アーム94を同一方向に配向させた状態で、円形
ステープラ85を回転させると、両方の有孔バットレス
リング107は同時に外れる。
【0041】本発明の具体的な実施形態は、次の通りで
ある。 (1)前記バットレス材料は、その第1の側部及び第2
の側部に沿って設けられた複数の開口部を有し、前記開
口部は、前記バットレス材料を前記フレームに取り付け
るために前記フレームの前記第1の側部及び第2の側部
に沿って設けられたフックと嵌合することを特徴とする
請求項1記載の組立体。 (2)前記フレームは、その底面から延びていて、組織
クランプ部材に設けられた嵌合特徴部と係合するリブを
更に有していることを特徴とする請求項1記載の組立
体。 (3)前記フレームは、実質的に硬質のプラスチックで
作られていることを特徴とする請求項1記載の組立体。 (4)前記バットレス材料は、前記フレームの前記第1
の側部と前記第2の側部との間に延びる実質的に連続し
た頂面を有していることを特徴とする請求項1記載の組
立体。 (5)前記バットレス材料は、その第1の側部及び第2
の側部に沿って設けられた複数の開口部を有し、前記開
口部は、前記バットレス材料を前記フレームに取り付け
るために前記フレームの前記第1の側部及び第2の側部
に沿って設けられたフックと嵌合することを特徴とする
請求項2記載の組立体。
【0042】(6)前記フレームは、その底面から延び
るリブを更に有し、前記少なくとも一方のクランプ部材
は、前記組立体を前記少なくとも一方のクランプ部材に
固定するよう前記リブと嵌合する凹みを更に有している
ことを特徴とする請求項2記載の外科用ステープリング
器具。 (7)前記フレームは、実質的に硬質のプラスチックで
作られていることを特徴とする請求項2記載の組立体。 (8)前記バットレス材料は、前記少なくとも一方のク
ランプ部材の前記底面を実質的に覆っていることを特徴
とする請求項2記載の外科用ステープリング器具。 (9)前記バットレス材料は、その第1の側部及び第2
の側部に沿って設けられた複数の開口部を有し、前記開
口部は、前記バットレス材料を前記フレームに取り付け
るために前記フレームの前記第1の側部及び第2の側部
に沿って設けられたフックと嵌合することを特徴とする
請求項3記載の組立体。 (10)前記フレームは、その底面から延びているリブ
を更に有し、第2のクランプ部材は、前記組立体を前記
第2の組織クランプ部材に固定するよう前記リブと係合
する凹みを更に有していることを特徴とする請求項3記
載の組立体。
【0043】(11)前記フレームは、実質的に硬質の
プラスチックで作られていることを特徴とする請求項3
記載の組立体。 (12)前記バットレス材料は、前記第2のクランプ部
材の前記底面を実質的に覆っていることを特徴とする請
求項3記載の外科用ステープリング器具。 (13)前記バットレス材料は、その第1の側部及び第
2の側部に沿って設けられた複数の開口部を有し、前記
開口部は、前記バットレス材料を前記フレームに取り付
けるために前記フレームの前記周囲にぐるりと設けられ
たフックと嵌合することを特徴とする請求項4記載の組
立体。 (14)前記フレームは、実質的に硬質のプラスチック
で作られていることを特徴とする請求項4記載の組立
体。 (15)前記バットレス材料は、前記少なくとも一方の
クランプ部材の前記底面を実質的に覆っていることを特
徴とする請求項4記載の外科用ステープリング器具。
【0044】
【発明の効果】請求項1に記載された本発明の組立体
は、これが外科用ステープリング器具上に配置されたと
きに、外科用ステープリング器具の組織クランプ部材の
頂面に連結される実質的に剛性のフレームを有し、バッ
トレス材料が、フレームの第1の側部及び第2の側部に
取り付けられていて、組立体が外科用ステープリング器
具上に配置されたときに、外科用ステープリング器具の
組織クランプ部材の底面に当接するような構成になって
いる。手術後、外科用ステープリング器具から容易に解
放されるようになっている。かかる機械的取付け手段を
利用した本発明の構成により、従来技術で生じていたよ
うな合併症の問題が解決されると共に脆い組織に取り付
けられた外科用ファスナーラインの補強を効果的に達成
することができる。請求項2及び請求項3の発明は、か
かる機械的取付け手段を利用した外科用ステープリング
器具、請求項4の発明は、同様にかかる機械的取付け手
段を利用した円形外科用ステープリング器具に関するも
のであって、上述の作用効果を奏することができる。
【0045】本発明の特定の実施形態を開示したが、本
発明の精神及び範囲から逸脱することなく器具及び(又
は)方法の設計変更例を想到できる。本発明を説明する
際に用いた用語は、説明のためであって、限定のための
ものではない。
【図面の簡単な説明】
【図1】外科用ステープリング器具の等角図であり、ア
ンビルの第1のクランプ表面に解放自在に取り付けられ
ると共に本発明のホットメルト接着剤によってステープ
ルカートリッジの第2のクランプ表面に解放自在に取り
付けられたバットレスストリップを備えるエンドエフェ
クタを示す図である。
【図2】図1の外科用ステープリング器具のエンドエフ
ェクタの拡大等角図であり、分かりやすくするためにア
ンビルを断面で示すと共に回転させており、この図は、
アプリケータを用いて本発明の溶融ホットメルト接着剤
をエンドエフェクタの第1のクランプ表面及び第2のク
ランプ表面に塗布する段階を示している。
【図3】外科用ステープリング器具のエンドエフェクタ
の拡大等角図であり、分かりやすくするためにアンビル
を断面で示すと共に回転させており、この図は、バット
レス材料を組織クランプ表面に塗布された本発明の溶融
ホットメルト接着剤に接触させることによりバットレス
材料のストリップを組織クランプ表面の各々に取り付け
る段階を示している。
【図4】本発明のホットメルト接着剤を設定値を越えて
冷却する段階を示す分解等角図であり、剥離性接着剤が
固体になり、バットレス材料の部分の各々をそれぞれ対
応関係にある組織クランプ表面の各々に接着するように
なる状態を示す図である。
【図5】円形ステープリング器具の等角図であり、円形
ステープリング器具へのバットレスリングの取付けのた
めに本発明の溶融接着剤を円形ステープリング器具のア
ンビル及びステープルカートリッジに塗布する段階の実
施前における円形ステープリング器具上に配置されたバ
ットレスリングを示している図である。
【図6】外科用ステープリング器具の等角図であり、ア
ンビルキャリヤによってアンビルの第1のクランプ表面
に解放自在に取り付けられたバットレスストリップを備
えるエンドエフェクタを示す図であり、バットレススト
リップは、外科用ステープリング器具に対する遠位側へ
の運動により取外し可能であることを示す図である。
【図7】アンビルキャリヤの構成要素の等角分解図であ
り、有孔バットレスストリップがキャリヤシェルと解放
自在に組み立てられるときの有孔バットレスストリップ
の経路を示す図である。
【図8】図7のアンビルキャリヤの組立状態の構成要素
の等角図である。
【図9】アンビルキャリヤの構成要素の別の組立状態の
遠位側端面図である。
【図10】着脱自在なキャリヤシェル及び有孔バットレ
スストリップの変形実施形態の等角分解図である。
【図11】開放位置にあるアンビル及びアンビルに取り
付けられた取付けリングを備える円形ステープリング器
具の等角図であり、有孔バットレスリングが取付けリン
グに着脱自在且つ回転自在に取り付けられている状態を
示す図である。
【符号の説明】
20 外科用ステープリング器具 25 取っ手 30 シャフト 31 固定チャネル 35 エンドエフェクタ 40 アンビル 41,46 組織クランプ表面 45 ステープルカートリッジ 47 ステープルスロット 49 ステープル 60 バットレスストリップ 90 アンビルキャリヤ 91 フレーム又はキャリヤシェル 92 アンビルキャリヤ本体 100 有孔バットレスストリップ
───────────────────────────────────────────────────── フロントページの続き (72)発明者 マーク・エス・ゼイナー アメリカ合衆国、45103 オハイオ州、バ タビア、エリオン・ロード 1979 (72)発明者 ジェオフ・ヒュエイル アメリカ合衆国、45040 オハイオ州、メ イソン、インディアン・サマー・ウェイ 8212 (72)発明者 ケネス・ウェールズ アメリカ合衆国、45010 オハイオ州、メ イソン、スウェイン・プレイス 9675 (72)発明者 ディーン・エル・ガーナー アメリカ合衆国、45244 オハイオ州、シ ンシナティ、レーク・フォレスト・レーン 5063 Fターム(参考) 4C060 CC01 CC09 CC13 CC23 MM24

Claims (4)

    【特許請求の範囲】
  1. 【請求項1】 外科用ステープリング器具の組織クラン
    プ部材にバットレス材料を解放自在に取り付ける組立体
    であって、 a.前記組立体が外科用ステープリング器具上に配置さ
    れたときに、外科用ステープリング器具の組織クランプ
    部材の頂面に連結される実質的に剛性のフレームと、 b.前記フレームの第1の側部及び第2の側部に取り付
    けられていて、前記組立体が外科用ステープリング器具
    上に配置されたときに、外科用ステープリング器具の組
    織クランプ部材の底面に当接するバットレス材料とを有
    していることを特徴とする組立体。
  2. 【請求項2】 組織をクランプしてステープリングする
    外科用ステープリング器具であって、 a.取っ手と、前記取っ手に連結された第1及び第2の
    互いに向かい合った組織クランプ部材とを有し、前記組
    織クランプ部材は、組織をこれらの間に受け入れる開き
    位置と、組織をこれらの間でステープリングする閉じ位
    置との間で動くことができ、前記第1のクランプ部材
    は、複数のステープルを収容しており、 b.前記第1のクランプ部材及び第2のクランプ部材の
    うち少なくとも一方に解放自在に取り付けられた組立体
    を有し、前記組立体は、前記少なくとも一方の組織クラ
    ンプ部材の頂面に連結された実質的に硬質のフレーム
    と、前記フレームの第1の側部及び第2の側部に取り付
    けられたバットレス材料とを有し、前記バットレス材料
    は、前記少なくとも一方の組織クランプ部材の底面に当
    接することを特徴とする外科用ステープリング器具。
  3. 【請求項3】 組織をクランプしてステープリングする
    外科用ステープリング器具であって、 a.取っ手と、前記取っ手に連結された第1及び第2の
    互いに向かい合った組織クランプ部材とを有し、前記組
    織クランプ部材は、組織をこれらの間に受け入れる開き
    位置と、組織をこれらの間でステープリングする閉じ位
    置との間で動くことができ、前記第1のクランプ部材
    は、複数のステープルを収容しており、 b.前記第2のクランプ部材に解放自在に取り付けられ
    た組立体を有し、前記組立体は、前記第2の組織クラン
    プ部材の頂面に連結された実質的に硬質のフレームと、
    前記フレームの第1の側部及び第2の側部に取り付けら
    れたバットレス材料とを有し、前記バットレス材料は、
    前記第2の組織クランプ部材の底面に当接することを特
    徴とする外科用ステープリング器具。
  4. 【請求項4】 組織をクランプしてステープリングする
    円形外科用ステープリング器具であって、 a.取っ手と、前記取っ手に連結された第1及び第2の
    互いに向かい合った組織クランプ部材とを有し、前記組
    織クランプ部材は、組織をこれらの間に受け入れる開き
    位置と、組織をこれらの間でステープリングする閉じ位
    置との間で動くことができ、前記第1のクランプ部材
    は、複数のステープルを収容しており、 b.前記第1のクランプ部材及び第2のクランプ部材の
    うち少なくとも一方に解放自在に取り付けられた組立体
    を有し、前記組立体は、前記少なくとも一方の組織クラ
    ンプ部材の頂面に連結された実質的に硬質のフレーム
    と、前記フレームの周囲にぐるりと円周方向に取り付け
    られたバットレス材料とを有し、前記バットレス材料
    は、前記スカートの一方の組織クランプ部材の底面に当
    接することを特徴とする円形外科用ステープリング器
    具。
JP2002130857A 2001-05-07 2002-05-02 外科用組織ステープリング器具及び外科用ステープリング器具へのバットレス材料の取付け組立体 Expired - Lifetime JP4226267B2 (ja)

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US09/850,374 US6656193B2 (en) 2001-05-07 2001-05-07 Device for attachment of buttress material to a surgical fastening device
US09/850,369 US6592597B2 (en) 2001-05-07 2001-05-07 Adhesive for attaching buttress material to a surgical fastening device
US850374 2001-05-07

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