JPH01317429A - 空気圧作動外科ステープラ・ヘッド - Google Patents

空気圧作動外科ステープラ・ヘッド

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Publication number
JPH01317429A
JPH01317429A JP1005012A JP501289A JPH01317429A JP H01317429 A JPH01317429 A JP H01317429A JP 1005012 A JP1005012 A JP 1005012A JP 501289 A JP501289 A JP 501289A JP H01317429 A JPH01317429 A JP H01317429A
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JP
Japan
Prior art keywords
piston
staple
drive
pneumatic
clamping
Prior art date
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Granted
Application number
JP1005012A
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English (en)
Other versions
JP2601535B2 (ja
Inventor
Jack Pedlick
ジヤツク・ペドリツク
Bela Vincze
ベラ・ビンチエ
Jess Deniega
ジエス・デニーガ
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Ethicon Inc
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Ethicon Inc
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00535—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00535—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
    • A61B2017/00557—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated inflatable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical 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
    • A61B2017/07214—Stapler heads
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2901—Details of shaft
    • A61B2017/2905—Details of shaft flexible
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2926—Details of heads or jaws
    • A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2926—Details of heads or jaws
    • A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
    • A61B2017/2929—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Surgical Instruments (AREA)
  • Materials For Medical Uses (AREA)
  • Saccharide Compounds (AREA)
  • Valve Device For Special Equipments (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • External Artificial Organs (AREA)
  • Control Of Fluid Pressure (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Prostheses (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Steroid Compounds (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、患者の組織に機械的外科ファスナを移植する
ための外科ステープラに関し、そして特に、加圧ガスに
よって動力を与えられる外科ステープラに関する。
従来の技術及び発明が解決しようとする問題点加圧ガス
の力を使用して、外科７アスナを移植する外科ステープ
ラが、技術において公知であり、そして特に、米国特許
第３．８３７．５５５号、第３．８３６．１１６号、第
３．８１５．４７６号、第３．７１７．２９４号、第３
．６６２．９３９号、第３．６４３．８５１号、第３．
６１８．８４２号、第３．６１３．５０７号、第４．４
０７．４３２号、第４．４３９．０２８号、及び第４．
３３１，２７７号において記載される。これらの特許に
示された器具において、加圧ガスのシリンダーが、器具
のハンドルに包含される。シリンダーからのガスは、ハ
ンドルの後部にある動カニニットに導かれ、この場合加
圧ガスが、機械的リンク機構配置の近位端部に適用され
る。機械的リンク機構は、器具の遠位端部におけるステ
ープル・カートリッジに結合される。ハンドルにおける
トリガーが押下される時、加圧ガスは、遠位のカートリ
ッジからステープルを移植するために、機械的リンク機
構を作動させる。
上記の特許において示された器具の総ては、器具の各作
動において、単一ステープルを交付する。
米国特許第４．５２７．７２４号において示された直線
ステープラによって行われる如く、空気圧ステープラは
、器具の各作動において幾つかのステープルを移植する
ことが望ましい。本発明による器具は、器具の各作動に
おいて１行以上のステープルを移植することができる。
上記の特許に記載された加圧ガス・ステープラにおいて
、シリンダーに包含されたガスの圧力は、機械的リンク
機構配置を動作させるために必要な力を提供するように
選ばれる。リンク機構配置は、器具のハンドルとステー
プラ・ヘッドの間で、器具のシャフトを通って延びる。
一般に、ガス圧力は、１００ｐ、ｓ、ｉ、の次元である
。弁システムは、加圧ガスをシリンダーからリンク機構
に要求により導き、これにより連結シャフトにおけるリ
ンク機構配置は、１００ｐ、ｓ、ｉ、ガス圧力によって
作動される。作動されたリンク機構配置は、代わって、
ステープラ・ヘッドにおけるステープル機構を作動させ
、組織をステープルで留め、組織は、ステープラ・ヘッ
ドのあごの間で締め付けられる。
より簡単かつ有用な器具を提供するために、先行技術装
置の機械的装置を単純化することが望ましい。特に、加
圧ガスを直接にステープラ・ヘッドに導くことが望まし
く、これにより器具のハンドルにおける加圧ガス源とス
テーグラ・ヘッドの間の機械的リンク機構配置の必要性
を除去する。
そのようなアプローチから生ずる一層の利点は、ハンド
ルをステープラ・ヘッドに結合する器具のシャフトが、
柔軟にされることであり、これは、そのような改良器具
における目的が、先行技術の装置における如く、剛性リ
ンク機構配置を行う代わりに、たわみ気送管をステープ
ラ・ヘッドに結合することであるためである。
問題点を解決するための手段 本発明の原理により、空気圧外科ステープラが提供され
、ステープラ・ヘッドのあごの間で組織を締め付け、か
つ締め付けられた組織にステープルを移植するために、
加圧ガスに応答する外科ステープラ・ヘッドを有する。
第１実施態様において、１行の外科ステープルを移植す
るｊ；めに適する外科ステープラ・ヘッドは、二重ピス
トン配置において構成される。器具の第１作動により、
加圧ガスは、ステープラ・ヘッドのあごの間で組織を締
め付けるために、第１のピストンを組織に対して駆動す
る。器具の第２作動は、第２ピストンに、ステープルを
組織に移植するステープル・ドライバを駆動させる。好
ましい第１実施態様において、ピストンの端部は、ピス
トンの束縛を防止し、かつ空気圧保全性を保証するため
に丸くされる。
本発明の好ましい実施態様の原理により、第１実施態様
の締め付け及び駆動ピストンは、各ピストンの後に位置
する気球状ブラダ−によって作動される。器具のＭ１作
動により、第１ブラダ−は、膨張され、そして膨張は、
ステープラ・ヘッドのあごの間で組織を締め付けるため
に、締め付けピストンを駆動する。器具の第２作動は、
ステープルを組織に移植するステープル駆動ピストンを
駆動するために、第２ブラダ−を膨張させる。第２実施
態様は、２つのピストンの回りに空気密封を提供する必
要性を除去し、これにより設計公差を容易にし、そして
さらに器具の構造と動作を単純化する。
本発明の実施態様は、器具のハンドルとシャフト部分に
おける機械的ステープル機構に加圧ガスを送り出す先行
技術の空気ステープラよりも都合が良い。そのような先
行技術のステープラにおいては、カなりのエネルギーが
、ハンドルからシャフトを通ってステープラ・ヘッドに
延びる機械的リンク機構を作動させる際に費やされる。
本発明において、ガス圧力は、ステープラ・ヘッドにお
いて直接に送り出される。こうして、圧力調整ガスは、
エネルギー損失なしに、締め付け及びステープル部材に
おいて直接に送り出されるために、締め付けとステープ
ル中送り出された力に関して、曖昧さは存在しない。
実施例 最初に、第１図を参照すると、本発明の空気圧作動外科
ステープラが、示される。ステープラは、３つの主要構
成要素を含む。ハンドル部分ｌＯ、シャフト部分１０８
、及びステープラ・ヘッド１１０である。３つの構成要
素は、空気圧急速分離継ぎ手によって相互連結点におい
て接合され、急速分離継ぎ手は、構成要素を脱着させ、
かつ他の構成のシャフトとステープラ・ヘッドと交換可
能にする。また、接合部２０と２２に、空気圧回転可能
ユニオン継ぎ手が位置し、回転可能ユニオン継ぎ手は、
矢印２４と２６によって示された如く、互いに関したス
テープラの主要構成要素の自由回転を許容する。特に、
シャフト１０８は、矢印２４によって示された如く、接
合部２０における軸の回りで自由に完全に回転する。ス
テープラ・ヘッド１１０は、矢印２６によって示された
如く、シャツ）１０８の軸に垂直な軸の回りで２００度
を超えて自由に回転する。
加圧ガスのシリンダーは、キャップ１６を除去し、かつ
シリンダーをハンドルに挿入することにより、ハンドル
１０の下方部分１２に挿入される。
−旦シリンダーが挿入され、かつキャップ１６が締めら
れたならば、シリンダーからのガスが、解放され、そし
てハンドルにおける圧力調整器に流動する。シリンダー
からのガスの解放は、ステープラを活動準備にし、そし
てハンドルの後部から短い距離だけボタン２５を延びさ
せ、ステープラが加圧されていることを使用者に指示す
る。
ステープル手順の第１段階は、ステープラ・ヘッド１１
０のあごの間でステープルで留められる組織を締ｉ付け
ることである。組織は、あごの間に位置し、そしてステ
ープラの後部から延びるスライド７４が押下される。ス
ライドが前方に押される時、加圧ガスは、第１ガス管路
を通ってステープラ・ヘッドに流動することを許容され
、ステープラ・ヘッドのあごの間で組織を締め付ける。
スライド７４が解放されるとすぐに、それは、バネ力に
より、図示された延びた位置に滑って戻る。
締め付けの後のステープラ・ヘッドの後方部分の位置は
、第１図において１１０″において仮線で示される。
それからカートリッジ１１２におけるステープルが、ハ
ンドルのトリガー８４を押下することにより、締め付け
られた組織を通って押しやられる。
しかし、トリガーが押下される前に、トリガー安全装置
７８が、第１図に示された位置からスロット８０におい
て上方に移動され、かつスロット８０の前方拡張部分８
２へ回転されなければならない。この安全機構は、使用
者が実施準備の前にステープルの不注意の配置を防止す
る。トリガー安全装置７８が上方に移動され、かつ前方
に回転された後、トリガーが押下され、ステープラ・ヘ
ッド１１０におけるアンビル＋１４に対してステープル
の脚を折り返すか、又はアンビルの位置にある結合ステ
ープル受は器とステープルの脚を連結するかのいづれか
により、組織においてステープルを移植する。トリガー
８４が押下される時、トリガー安全装置は、より垂直位
置に回転され、そしてバネ力によってスロット８０にお
いて下方に滑動する。
第２図は、本発明のシャフト１０８とステープラ・ヘッ
ド１１０の部分的な断面図である。ステープラ・ヘッド
は、可動締め付け及びステープル機構において複数のス
テープル２０２を保持するあご２００を含む。あご２０
０の反対側に、定置した対向あご２０４がある。ステー
プル機構に対向する定置あごの面は、あごの間の組織を
通過する金属ステープルの脚を折り返す又は曲げるアン
ビルを具備する。代替的に、ステープルが吸収性ポリマ
ー材料から構成される装置 リマー・ステープルの脚に嵌合しかつ保持する受は器の
カートリッジを保持する。そのようなポリマー・ステー
プルと受は器は、１９８７年１１月５日提出された米国
特許出願第１１７、５９２号において記載される。
ステープル２０２は、あご２００におけるステープル・
カートリッジ１１２に形成されたポケットに位置し、ス
テープルの脚は、定置あご２０４の方を向く。ステープ
ル・カートリッジ１１２の後に、ステープル・プッシャ
−２１０がある。ステープル・プッシャーは、ステープ
ル・カートリッジにおけるそれぞれのステープルのクラ
ウンの方を向く指状物２１２を有する。ステープル・プ
ッシャー２１０の後に、駆動ピストン２１４がある。
駆動ピストンは、締め付けピストン２２０の内側に位置
し、そして第３図において拡大詳細図で示された、２つ
の周囲Ｏリング２１６と２１８によって、空気圧に密封
される。締め付けピストン２２０は、ピストン・ハウジ
ング２３０の内側に位置する。締め付けピストン２２０
は、また第３図に示された２つの周囲Ｏリング２２２と
２２４によって、ピストン・ハウジングの内側で空気圧
に密封される。後者の２つのＯリングの間に、締め付け
ピストンを通過するポート２２６と２２８がある。
これらのボートは、対称的に位置し、その結果締め付け
ピストンは、底部のいづれかの端部によりピストン・ハ
ウジングに挿入される。
ピストン・ハウジングの後部に、通路２３２が位置する
．この通路は、気送管セグメント３４によって直角空気
ユニオン継ぎ手ｌ５０の第ｌコネクタに結合される。ピ
ストン・ハウジングの前部に向かって、第２通路２３６
がある。この通路は、管セグメント３６によってユニオ
ン継ぎ手１５０の第２コネクタに結合される。
ステープラ・ヘッド＋１０の下方左に、ステープラのシ
ャフト部分１０８がある。シャフト１０８は、気送管の
２つのセクション３０と３２を含む。シャフト部分にお
ける管は、空気スナップ継ぎ手によって直角ユニオン継
ぎ手１５０の２つの入りロポート（一方が５４で示され
る）に結合され、一方が１０６で示される。ハンドル１
０に結合されるシャフト１０８の後部末端に、平行空気
ユニオン継ぎ手１２０がある。空気ユニオン継ぎ手１２
０は、空気スナップ継ぎ手によってハンドルに除去可能
に結合され、空気スナップ継ぎ手の１つは、４３で示さ
れる。気送管３０、３２は、コネクタ１２０の２つの出
口ポー｝１１２に結合される。
ステープルで留められる組織が、ステープラ・ヘッドの
あご２００と２０４の間に位置し、かつあごの間で組織
を締め付けることが望まれる時、スライド７２が押下さ
れ、そして加圧ガスが、ハンドルから平行ユニオン継ぎ
手１２０の一方のポートへと流れる。加圧ガスは、シャ
フト部分１０８における管セクシヨン３０と、直角ユニ
オン継ぎ手１５０の通路を通って運ばれる。加圧ガスは
、管セグメント３４と通路２３２を通って締め付けピス
トン２２０の後部に通過する。そこでガスは、締め付け
ピストンとピストン・ハウジングの間の中間面２４０に
押しやられ、この場合それは、膨張し、かつ締め付けピ
ストンを、矢印２８０によって示された如く、前方に定
置あごの方に押す。締めイづけピストンが移動する時、
それは、駆動ピストン、ステープル・プッシャー、及び
ステープル・カートリッジを一緒に保持する。これは、
ステーグル・カートリッジと定置あご２０４の間の組織
を締め付ける。この時、締め付けピストン２２０は、前
方通路２３６が、第３図において仮線で示された如く、
締め付けピストンのポート２２８に対向する如く、ハウ
ジング２３０ｊ二おける位置にある。この通路とポート
を正確に整合させる必要性を回避するために、そしてこ
れによりいろいろな厚さの組織の締め付けとステープル
を許容するために、ポート２２８は、スロットの形式に
おいて縦に広げられることが、注目される。これにより
、通路２３６と通路２３６の任意の部分との整合は、通
路２３６の駆動ピストンの後部における空間への空気結
合を可能にする。
組織があごの間に確実に締め付けられると、使用者は、
トリガー安全装置を移動かつ回転させ、そしてステープ
ルを移植するために、トリガーを引っ張る。加圧ガスは
、平行ユニオン継ぎ手１２０、気送管３２、コネクタ１
５０、及び管セグメント３６を通って、通路２３６に流
れる。それから、加圧ガスは、締め付けピストンにおけ
るポート２２８を通って、駆動ピストンの後部における
空間２４２に流動する。この空間における膨張ガスは、
矢印２８２によって示された如く、駆動ピストン２１４
を前方にステープル・プッシャー２１４の後部に対して
押し、これにより一様な圧力が、プッシャーとその指状
物に適用される。それから、指状物は、ステープル・カ
ートリッジのポケットから、組織を通って、そしてアン
ビルに対して又は定置あごの受は器にステープルを駆動
する。トリガーが解放される時、駆動ピストンと締め付
けピストンへの加圧ガスは、ハンドルにより排出され、
ステープルで留められた組織からあご２００を解放する
。
本発明のステープラ・ヘツードの動作のための圧力調整
ガスの発生に適する空気圧調整システムは、「外科ステ
ープラ圧力調整器」と題する同時に提出された米国特許
出願第（ＥＴＨ−７４２）号において記載される。
矩形ピストンが締め付け及び駆動ピストンに対して使用
される時、ピストンは、ピストン・ハウジング及び相互
に関して移動する時、曲がる傾向があることが見いださ
れた。また、矩形ピストンの角におけるＯリング・シー
ルは、適切な空気密封を提供しない。従って、ピストン
とピストン・ハウジングの端部は、第４図において２４
４と２４６で示された如く、長円形状において丸くされ
る。これは、束縛問題を除去し、そしてピストン端部に
おいて良好な０リング・シールを提供する。
第５図の本発明の実施態様は、第２図と第３図の実施態
様に類似し、そして気球状ブラダ−を使用する代替的ス
テープラ・ヘッドの実施態様を示す。駆動ブラダ−２５
０は、管セグメント２３８に結合され、そして締め付け
ピストン２２０の内側の駆動ピストン２１４の後に位置
する。管セグメント２３８は、直角ユニオン継ぎ手１５
０の出口ポートに結合される。締め付けブラダ−２５２
は、管セグメント２３４に結合され、そしてピストン・
ハウジング２３０の内側の締め付けピストン２２０の後
に位置する。管セグメント２３４は、直角ユニオン継ぎ
手１５０の第２出ロポートに結合される。スライド７２
が押下される時、締め付けブラダ−２５２が膨張される
ために、それは、拡大し、そして締め付けピストン２２
０を定置あご２０４の方に押し、あごの間で組織を締め
付ける。トリガーが押下される時、駆動ブラダ−２５０
が膨張され、駆動ピストン２１４をステープル。
プッシャーに対して駆動し、かつ組織にステープルを移
植する。ブラダ−の使用は、ピストンの回りの０リング
・シールに対する必要性を除去し、ピストンは、この実
施態様において空気特性を有さない。この実施態様は、
非空気圧ピストンの間の公差が、ピストン束縛を防止す
るために緩和されるために、十分に矩形のピストンの使
用を許容する。ブラダ−・アクチュエータの使用はまた
、この実施態様に固有の安全機構を提供する。ブラダ−
の不注意の過剰圧力の場合には、ブラダ−は、ハウジン
グとピストンの内側で破裂する。この発生の力は、ステ
ープラ・ヘッドのハウジング内に制限され、そして漏れ
ガスは、緩和された公差により、ピストンとハウジング
の間の中間面を通って無害に排出される。さらに、第２
実施態様は、管セグメント２３８が、ピストンが締め付
け手順中移動する時、広範囲の締め付け位置で２つのピ
ストンと一緒に自由に移動するために、非常に多様な厚
さの組織をステープルで留めることができる。
本発明の主なる特徴及び態様は以下のとおりである。
１、空気圧締め付け管路と空気圧ステープル管路により
、駆動機構に結合された作動機構を有し、該駆動機構が
、ステープル・ドライバーとステープル表面を含む外科
ステープラにおいて、改良が、該空気圧締め付け管路に
付着された締め付けピストンであって、該ドライバーと
該ステープル表面の間で組織を締め付けるために、該ド
ライバーを該ステープル表面の方に推進することができ
る締め付けピストンと、 該ドライバーを推進するために、該空気圧ステープル管
路に付着されＩ；駆動ピストンとを具備する外科ステー
プラ。
２、該駆動ピストンが、該締め付けピストン内で密封さ
れ、そして該駆動ピストンの後に空気室を形成するため
に、０リング・シールにより分離される上記ｌに記載の
外科ステープラ。
３、該締め付けピストンが、該ハウジング内ノ該締め付
けピストンの後に締め付け室が形成される如く、ピスト
ン・ハウジング内でＯリング・シール内で密封される上
記２に記載の外科ステープラ。
４、該駆動ピストンと該締め付けピストンが、−膜長円
形角を呈する上記３に記載の外科ステープラ。
５、該空気ＩＥ締め付け管路が、ピストン・ハウジング
内の該締め付けピストンの後に座する締め付けブラダ−
により、該締め付けピストンを推進し、該ブラダ−は、
該作動機構によって作動された時、該締め付けピストン
を駆動するために、該空気圧締め付け管路によって充填
される上記ｌに記載の外科ステープラ。
６、該駆動ピストンが、該締め付けピストン内に可動に
包含され、該駆動ピストンは、該作動機構の作動により
、該駆動ピストンの後に座する駆動プラダ−の膨張によ
って推進される上記５に記載の外科ステープラ。
７、該駆動ピストンと該締め付けピストンが、一般長円
角を呈する上記６に記載の外科ステープラ。
８、該駆動ピストンと該締め付けピストンが、一般矩形
である上記６に記載の外科ステーグラ。
９．１つの連続ユニットにおいて、該締め付けピストン
と、該駆動ピストンと、該ドライバーとを包むハウジン
グをさらに具備し、該締め付けピストンが、さらに該駆
動ピストンを包み、この場合該空気圧締め付け管路は、
該締め付けピストンを推進するために、該ハウジング内
の締め付け室ｉ充填することができ、そして該空気圧ス
テーグル管路は、該駆動ピストンを推進するために、該
ハウジング内の該締め付け室から分離したステープル室
を充填することができる上記ｌに記載の外科ステープラ
。
１０、該空気圧締め付け管路が、該ハウジング内の該締
め付けピストンの後に座する締め付けブラダ−により、
該締め付けピストンを推進し、該ブラダ−は、該作動機
構による作動において、該締め付けピストンを駆動する
ために、該締め付け管路によって充填される上記９に記
載の外科ステープラ。
１１、該駆動ピストンが、該締め付けピストンによって
包まれ、該駆動ピストンは、該作動機構による作動にお
いて、該駆動ピストンの後に座する駆動ブラダ−の膨張
により、該空気圧駆動管路によって推進される上記１２
に記載の外科ステープラ。
１２、空気圧締め付け管路と空気圧ステープル管路によ
り、駆動機構に結合された作動機構を有し、該駆動機構
が、ステープルをステープル表面の方に駆動することが
できるドライバーを含む外科ステープラにおいて、改良
が、 該ドライバーを推進するために、該空気圧ステープル管
路に付着された駆動ピストンと、該空気圧締め付け管路
によって作動された締め付けピストンであって、該ドラ
イバーと該ステープル表面の間で組織を締め付けるため
に、該駆動ピストンと該ドライバーを該ステープル表面
の方に推進することができる締め付けピストンと、１つ
の連続ユニットにおいて、該締め付けピストンと、該駆
動ピストンと、該ドライバーとを包むピストン・ハウジ
ングとを具備し、該締め付けピストンが、該ピストン・
ハウジング内で該駆動ピストンを包み、該ハウジングは
、該空気圧締め付け管路に結合された締め付け室と、該
締め付け室から前方に該ステープル表面の方に分離され
た駆動室とを規定し、該駆動室は、該空気圧駆動管路に
結合され、 この場合該空気圧締め付け管路は、該作動機構によって
作動され、該締め付け室を空気により充填し、該締め付
けピストンを該ステープル表面の方に推進し、該ドライ
バーと該ステープル表面の間で組織を締め付け、そして
該空気圧駆動管路は、その後、該駆動室を空気により充
填するために作動され、該駆動ピストンと、該ドライバ
ーと、該ステープルを該ステープル表面の方に推進し、
該ステープルを該組織に移植する外科ステープラ。
１３、該駆動ピストンが、該締め付けピストンと該駆動
ピストンの間に座する０リング・シールにより、該締め
付けピストンから分離される上記１２に記載の外科ステ
ープラ。
１４、該締め付けピストンが、該ノ鳥つジングと該締め
付けピストンの間に座するＯリング・シールにより、該
ピストン・ハウジングから分離される上記１３に記載の
外科ステープラ。
１５、該駆動ピストンと該締め付けピストンが、−膜長
円形端部を呈する上記１４に記載の外科ステープラ。
１６、該空気圧締め付け管路が、該／１ウジングを通っ
て延びる締め付け通路により、該締め付け室に結合され
、そして該空気圧駆動管路が、該駆動室に延びる駆動通
路により、該駆動室に結合される上記１５に記載の外科
ステープラ。
１７、該空気圧締め付け管路が、該ノ１ウジング内の該
締め付けピストンの後に位置する締め付けブラダ−によ
り、該締め付けピストンを推進し、該ブラダ−は、該締
め付けピストンを駆動するために、該作動機構による作
動において、該締め付け管路によって膨張される上記１
３に記載の外科ステープラ。
１８、該駆動ピストンが、該締めゝ付けピストンによっ
て包まれ、該駆動ピストンは、該駆動ピストンの後に座
する駆動プラダ−により、該空気圧駆動管路によって推
進され、該駆動プラダ−は、該駆動ピストンを駆動する
ために該作動機構の作動により膨張される上記１７に記
載の外科ステープラ。
１９、該空気圧締め付け管路が、該ハウジング内の締め
付け通路により、該締め付けブラダ−に結合され、そし
て該空気圧駆動管路が、該締め付け通路から前方に該ス
テープル表面の方に、該ノ１ウジング内の駆動通路によ
り該駆動プラダ−に結合される上記１８に記載の外科ス
テープラ。
２０、加圧ガス源と、 組織を締め付けるための手段と、 該締め付けられ”た組織にステープルを移植するための
手段と、 該締め付け手段と該ステープル移植手段を該源からの加
圧ガスにより作動させるための手段とを具備する外科ス
テープル器具。
２１．該作動手段が、加圧ガスを該ステープル移植手段
に送り出すために作動されるトリガーと、加圧ガスを該
締め付け手段に送り出すために作動される手動制御とを
含む上記２０に記載の外科ステープル器具。
２２、該締め付け手段と該ステープル移植手段の各々が
、空気圧ピストンを含む上記２０に記載の外科ステープ
ル器具。
２３、Ｌｉ（締め付け手段と該ステープル移植手段の各
々が、ブラダ−の膨張によって作動される上記２０に記
載の外科ステープル器具。
【図面の簡単な説明】
ｖｇ１図は、本発明の原理により構成された外科ステー
プラの斜視図。 第２図は、本発明の原理により構成されたステープラ・
ヘッドを使用する外科ステープラのシャフトとステープ
ラ・ヘッドを示す図。 第３図は、第２図の部分の拡大図。 第４図は、丸くされたピストン端部を示す第２図のステ
ープラ・ヘッドの前面図。 第５図は、本発明のステープラ・ヘッドの第２実施態様
の部分的断面図。 ｌＯ・・・ハンドル部分 １６・・・ギャップ ２０．２２・・・接合部 ８０・・・スロット ８４・・・トリガー １０８・・・シャフト部分 １１０・・・ステーグラ・ヘッド １１２・・・カートリッジ １１４・・・アンビル ２００・・・あご ２０２・・・ステープル

Claims (1)

  1. 【特許請求の範囲】 １、空気圧締め付け管路と空気圧ステープル管路により
    、駆動機構に結合された作動機構を有し、該駆動機構が
    、ステープル・ドライバーとステープル表面を含む外科
    ステープラにおいて、該空気圧締め付け管路に取付けら
    れた締め付けピストンであって、該ドライバーと該ステ
    ープル表面の間で組織を締め付けるために、該ドライバ
    ーを該ステープル表面の方に推進することができる締め
    付けピストンと、 該ドライバーを推進する、該空気圧ステープル管路に取
    付けられた駆動ピストンとを具備することを特徴とする
    外科ステープラ。 ２、空気圧縮め付け管路と空気圧ステープル管路により
    、駆動機構に結合された作動機構を有し、該駆動機構が
    、ステープルをステープル表面の方に駆動することがで
    きるドライバーを含む外科ステープラにおいて、 該ドライバーを推進する、該空気圧ステープル管路によ
    つて作動せしめられる駆動ピストンと、該空気圧締め付
    け管路によって作動される締め付けピストンであつて、
    該ドライバーと該ステープル表面の間で組織を締め付け
    るために、該駆動ピストンと該ドライバーを該ステープ
    ル表面の方に推進することができる締め付けピストンと
    、１つの連続ユニットにおいて、該締め付けピストンと
    、該駆動ピストンと、該ドライバーとを包むピストン・
    ハウジングとを具備し、該締め付けピストンが、該ピス
    トン・ハウジング内で該駆動ピストンを包み、該ハウジ
    ングは、該空気圧締め付け管路に結合された締め付け室
    と、該締め付け室から前方に該ステープル表面の方に分
    離された駆動室とを規定し、該駆動室は、該空気圧駆動
    管路に結合され、 該空気圧締め付け管路は、該作動機構によつて作動され
    、該締め付け室を空気により充填し、該締め付けピスト
    ンを該ステープル表面の方に推進し、該ドライバーと該
    ステープル表面の間で組織を締め付け、そして該空気圧
    駆動管路は、その後、該駆動室を空気により充填するた
    めに作動され、該駆動ピストンと、該ドライバーと、該
    ステープルを該ステープル表面の方に推進し、該ステー
    プルを該組織に移植することを特徴とする外科ステープ
    ラ。 ３、加圧ガス源と、 組織を締め付けるための手段と、 該締め付けられた組織にステープルを移植するための手
    段と、 該締め付け手段と該ステープル移植手段を該源からの加
    圧ガスにより作動させるための手段とを具備することを
    特徴とする外科ステープル器具。
JP1005012A 1988-01-15 1989-01-13 空気圧作動外科ステープラ・ヘッド Expired - Lifetime JP2601535B2 (ja)

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GB888800909A GB8800909D0 (en) 1988-01-15 1988-01-15 Gas powered surgical stapler
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JPH01317429A true JPH01317429A (ja) 1989-12-22
JP2601535B2 JP2601535B2 (ja) 1997-04-16

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JP1005013A Expired - Lifetime JP2601536B2 (ja) 1988-01-15 1989-01-13 外科ステープラ圧力調整器
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JP1005013A Expired - Lifetime JP2601536B2 (ja) 1988-01-15 1989-01-13 外科ステープラ圧力調整器

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US4951861A (en) 1990-08-28
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US5018657A (en) 1991-05-28
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US4938408A (en) 1990-07-03
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PT89450B (pt) 1993-12-31
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BR8900176A (pt) 1989-09-12
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ES2050222T3 (es) 1994-05-16
ATE103159T1 (de) 1994-04-15
JP2601534B2 (ja) 1997-04-16
PT89452B (pt) 1994-01-31
EP0324636A1 (en) 1989-07-19
AU2849789A (en) 1989-07-20
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AU614015B2 (en) 1991-08-15
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PT89452A (pt) 1989-10-04

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