JPS58500053A - 外科用ステ−プラのインジケ−タ - Google Patents

外科用ステ−プラのインジケ−タ

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JPS58500053A
JPS58500053A JP57500770A JP50077082A JPS58500053A JP S58500053 A JPS58500053 A JP S58500053A JP 57500770 A JP57500770 A JP 57500770A JP 50077082 A JP50077082 A JP 50077082A JP S58500053 A JPS58500053 A JP S58500053A
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indicator
stapler
support assembly
moving means
assembly
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JPS6134816B2 (ja
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グレイヴナ−・ロイ・デイ
デカルロ・アルフレツド・エフ
ノイレズ・ダグラス・ジ−
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ユナイテツド ステイツ サ−ジカル コ−ポレ−シヨン
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/11Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
    • A61B17/115Staplers for performing anastomosis, e.g. in a single operation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/11Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
    • A61B17/115Staplers for performing anastomosis, e.g. 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
    • 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
    • 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
    • A61B90/08Accessories or related features not otherwise provided for
    • A61B2090/0807Indication means
    • A61B2090/0811Indication means for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
    • 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
    • A61B90/36Image-producing devices or illumination devices not otherwise provided for
    • A61B90/361Image-producing devices, e.g. surgical cameras
    • A61B2090/3616Magnifying glass

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (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】 外科用ステープラのインジケータ 発明の背景 本発明は外科用ステープラの比較的簡単かつ安価な装置に関するものである。
ステープル支持部分とそのアノビルとの間の空間においてステープラの一端でス テープル留めを行うような各種の外科用ステープラが知られている。例えば/9 7g年72月7日付出願の・I中空身体器官の円形外科用ステープル留め装置お よびそれに使用する使い捨てカートリッジ・Iと題する米国特許出願第91.’ l’12/号を参照されたい。この出願では、外科用ステープルとナイフを備え た使い捨てカートリッジアッセンブリと、使用前にその末端側端部に取付けられ 使用後に取外される。共働するアンビルアッセンブリとを備えることができるス テープラが記載されている。この種のステープラにおいては、一般にステープラ の反対側端部にノブすなわち蝶ナツトが設けられている。このノブすなわち蝶ナ ツトは、回転して外科医がステープル留めする体組織を処理しこれを配置するス テープル支持部分とアノビルとの間の間隔を著しく変化させるようになっている 。
典型的には、このようなステープラにおいてステープル支持部分とアノビルとの 間の最大の間隔は約772インチ〜2インチであった。しかしながらこのステー プラで組織をステープル留めすることができる前に、そのステープル支持部分と そのアンビルとの間の間隔は使用するステープルの大きさに適合する間隔となる まで小さくされなければならなかった。例えば一般的なり型外科用ステープルに よってステーブル留めするには、ステープル支持部分とアノビルとの間の間隔は 約/謳〜2.3 vanまで小さくして、ステープル支持部分とアンビル部分と の間に圧縮されている組織がステープラによって適切に固定されることができる ようにしなければならなかった。
このようなステープラのステープル支持部分と使用されるステープルに適合する アノビルとの間に間隔を設け、組織が適切に固定できるようにするために、ステ ープル支持部分とアンビルとの間の間隔が組織を固定するのに適切であるように するための手段がめられていた。
79gθ年70月/6日出願の・I外科用便い捨て固定装置ηと題する係属中の 米国特許出願m/97.AI’1号においては、ステープラのステープル支持部 分とそのアンビルとの間の間隔がステープル支持部分とアノビルとの間で組織を 固定するのに一般に適切であるような間隔の範囲内であることを示すインジケー タを備えたステープラが記載されている。(この範囲は以下「一般に適切な間隔 の範囲」という)このステープラのインジケータは、アノビルを支持している可 動中心ロッドの基部側端部と、この中心ロッドにねじ嵌合している蝶ナツトの基 部側端部から構成されている。蝶ナツトを回転させてアノビルとステープル支持 部分との間の間隔が一般に適切な間隔の範囲(例えば約/〜2り唄の範囲)内に ある位置まで中心ロッドを移動させると、この中心ロッドの基部側端部は蝶ナツ トの端部と同一平面になるかあるいはその基部側に伸びている。
しかしながら、上記特許出願第1 q7,4 / +号のステープラにおいては 、アノビルとステープル支持部分との間の間隔が一般に適切な間隔の範囲内にあ るかどうかということをステープラの使用者が迅速かつ正確に知ることは必ずし も可能ではなかった。この点に関し、アンビルとステープル支持部分との間の間 隔が一般に適切な間隔の範囲内の最大の間隔に近づ(と a)中心ロッドの基部側の端部が蝶ナツトの端部と同一平面になっているかある いは蝶ナツトの基部側の端部の基部方向に伸びているかどうか(すなわちアンビ ル部分とステープル支持部分との間の間隔が一般に適切な間隔の範囲内にあるか どうか);あるいは、 d)中心ロッドの基部側の端部が蝶ナツトの端部の末端側に配置され℃いるがど うが(すなわちアノビルとステープル支持部分との間の間隔が一般に適切な間隔 の範囲内にないかどうか)、 ということを視覚的に決定することは困難であるかあるいは不可能であった。
従って外科用ステープラのアンビルとステープル支持部分との間の間隔が一般に 適切な間隔の範囲内であるかどうかが−目でわかるような手段がめられていた。
発明の要約 外科用ステープラにおいて: a)アンビルと; b)アンビルの基部方向に配置されているステープル支持アッセンブリを備え; このステーブル支持アッセンブリは、ステープルがアンビルに対して末端方向に 押されてアンビルとステーブル支持アッセンブリとの間で組織なステーブル留め するように作動されるようになっており; C)さらにアノビルまたはステーブル支持アッセンブリに連結され、軸方向に動 くようになっているねじ込みロッドと; d)ステーブル支持アッセンブリの基部方向に配置されかつねじ込みロッドとね じ嵌合している回転自在の移動手段を有し、この移動手段の回転によってねじ込 みロッドを軸方向に動かし;この移動手段は、ねじ込みロッドがステーブル支持 アッセンブリに連結され℃いる場合にはアノビルに、またねじ込みロッドがアン ビルに連結されている場合にはステーブル支持アッセンブリに回転自在に連結さ れており;かつ移動手段はねじ嵌合し℃いるねじ込みロッドの部分は移動手段内 部に配置されており;かつe)ねじ込みロッドと移動手段に連結され℃いる手段 であって、移動手段に対するねじ込みロッドの軸方向の位置が、アノビルとステ ーブル支持アッセンブリとの間の間隔がアンビルとステーブル支持アッセンブリ との間で組織をステープル留めするのに一般に適切である間隔の範囲内であるよ うな位置にあることを示す手段を備えている上記外科用ステープラにおいて; 前記表示手段(e)が; ねじ込みロッドに連結されねじ込みロッドと移動手段との間で移動手段内を軸方 向に動くようになっているインジケータマーキングと; 移動手段の側面にあるら篩面を備え、該ら篩面は移動手段が回転してインジケー タマーキングがら篩面の軸方向に配置され℃いる際に移動手段に対して基部方向 にありインジケータマーキングのら旋パスと冥質的に平行であり: インジケータマーキングはアノビルとステーブル支持アッセンブリとの間の間隔 が一般に適切な間隔の範囲内にある場合かつその場合にのみ移動手段が回転して 移動手段によって側面がカバーされず、ら篩面の基部方向から連続的に見ること ができかつら篩面に隣接していることを特徴とする上記外科用ステープラ。
この改良された外科用ステープルのインジケータを用いると、アンビルアッセン ブリとステーブル支持アッセンブリとの間隔が一般に適切な間隔の範囲内である かどうかを一目で決定することができる。
図面の簡単な説明 第1図は、係属中の米国特許出願第1qり、乙ZlLt号に記載されている外科 用ステープラの斜視図であり、本発明のインジケータの一実施態様を備えている 。第1図は最も遠い位置まで伸びている軸方向に可動のステープラの中心ロッド を示している 第1図では中心ロッドの末端に取付けられたアンビルアッセンブ リは、ステープラの・・クランプの末端にあるステーブル支持アッセンブリから 齢れている。
第2図は第1図のステープラの基部を示す分解斜視図である。第2図は第1図に 見られるステープラの反対側から見た図面である。第2図は本発明のインジケー タの要素を示しており、このインジケータは中心ロッドに連結され℃おり、この インジケータによってアンビルアッセンブリとステーブル支持アッセンブリとの 間の間隔が一般に適切な間隔の範囲に入っているかどうかを迅速かつ正確に決め ることができる。
第3図は第1図の線3−3に沿ってとられた一部断面図である。
第9図は第1図のステープラの基部を示す部分斜視図である。第9図はステープ ラの蝶ナツトの側面の両側にある一対の窓の末端側の面を示し℃いる。中心ロッ ドに連結され℃いるインジケータの基部は一対の窓の末端側(ζ配置されており 、インジケータの両押jにある一対のインジケータマーキングは蝶ナツトによっ て側面から力・(−されている。
第S図は第1図のステープラの斜視図であり、アンビルアッセンブリとステーブ ル支持アッセンブリが中空の身体器官のセクションをクランプし、そのセクショ ンをいっしょに固定しようとしている状態を示している。
第4図は第S図の線6−乙に沿ってとられた一部断面図である。第6図は第S図 のステープラの・・ンドルが・・クランプに向って押されプッシャーを末端方向 に押してステーブル支持アッセンブリを作動し、アンビルアッセンブリとステー ブル支持アッセンブリの間で組織をいっしょに固定するような状態にある。第S 図のステープラのハウジング、中心ロット、ブツシャ−1蝶ナツトおよびインジ ケータの位置を示している。
第7図は第9図に類似の部分斜視図であり、第S図のステープラの基部を示して おり、インジケータの基部は一対の窓の基部側に配置されている。第7図は6窓 の末端表面を示しており、インジケータマーキングの1つが窓の一方の末端表面 に隣接しその基部側に見えている。
第S図は第S図の線g−gVC沿ってとられた第S図のステープラの蝶ナツトを 示す一部平面図である。
第7図は本発明のインジケータの別の実施態様を備えた外科用ステープラの基部 を示′f第コ図に類似の分解斜視図である。
第70図は第9図のインジケータの実施態様とステープラを示す、第3図に類似 の一部断面図である。
第1/図は第9図のステープラの基部を示す、第7図に類似の部分斜視図である 。このインジケータの基部はステープラの蝶ナツトの側面にある窓の基部側に配 置されており、インジケータのインジケータマーキングは窓の末端表面に隣接し かつその基部側に見えている。
好ましい実施態様の詳細な説明 本発明の原理は他の外科用ステープラにも応用できるものであるが、本発明は/ 9go年70月り6日付出願のL/外科用の使い捨て固定装置・lと題する係属 中の米国特許m / q7.A / +号の使い捨て外科用ステープラにこれを 応用した場合についての以下の説明から完全に理解されるであろう。上記出願を 参照されたい。
第7図〜第g図には本発明のインジケータを備えた外科用ステープラの一実施態 様10が示されている。前記出願第1 q7.A / 4号によれば、このステ ーグラ10は軸方向の孔14を有する細長い中空の管状ボデーすなわち・・ウジ ング12を有し℃いる。・・ウジング12の基部には蝶ナツト16があり、この 蝶ナツト16は・・ウジフグ12の孔14と同軸の、軸方向の孔1γを備えてい る。
・・ウジング12の末端から中心ロッド1Bが突き出している。この中心ロッド 18は・・ウジング12の孔14内に軸方向に配置され、孔14内で末端方向お よび基部方向に動くようになっている。中心ロッド18は・・ウジング12の末 端から遠方に伸びそこからかなりの距離の25ところで止まる。中心ロッド18 はまた・・ウジング12の基部の方向に伸びる。中心ロッド18は蝶ナツト16 の孔17の中に入りその中で軸方向に配置されている。
中心ロッド18は孔17内で軸方向に動くようになっている。
中心ロッド18の末端にはアンビルアッセンブリ20がある。・・ウジング12 の末端には、アンビルアッセンブリ20の基部側にステーブル支持アッセンブリ 22がある。アンビルアッセンブリ20および/またはステープル支持アッセン ブリ22はステープラ10と一体にすることもできるし、あるいは当業者によ( 知られたやり方でステープラの使用者が所定の支持された方向にステープラ10 に対して固定して取付けられるような独立した部品とすることもできる。
アンビルアッセンブリ20とステープル支持アッセンブリ22の構造および寸法 は本発明の不可欠の要素ではなく、一般的な互換性のあるアンビルアッセンブリ とステープル支持アッセンブリ、例えば797g年7a月7日付の・l中空身体 器官の円形外科用ステーブル装置およびこれに用いる使い捨てカートリッジL/ と題する米国特許出願第q乙’7.42 /号に記載され℃いるアンビルアッセ ンブリとステープル支持アッセンブリも好適に使用することができる。アンビル アッセンブリ20は環状ナイフ切断リング(図には示されていない)とステーブ ル折り曲げポケット(図には示されていない)の2つの同心環状列をもっている のが好ましい。ステープル支持アッセンブリ22は複数の外科用ステーブル(図 には示されていない)を有しており、このステーブルは二つの同心環状列22A 内に配置され、アンビルアッセンブリ20の方向を向いている。ステープル支持 アッセンブリ22はまたこの環状ステーブルの列と同心でその内側に環状ナイフ 22Bを有し℃いるのが好ましい。ステープラ10においてステープル支持アッ センブリ22を作動するとそのナイフ22Bがアンビルアッセンブリ20のナイ フ切断リング内に末端方向に押され、またステーブル22Aの列はアンビルアッ センブリのポケットニ向かって末端方向に押されそのポケットにより折り曲げら れる。
ステープラ10の・飄つジング120両側から一対の一体の・・ンドル24が平 行に突き出している。各・・ンドル24は・・ウジング12の管状壁の側面の周 囲にある環状ヨーク25によって、・・ウジング12の管状壁に枢支されている 。ヨーク25は・hウジフグ12の管状壁から横方向に隔置されている一対の枢 支ピン26を支持している。各ハンドル24は枢支ピン26の、・・ウジング1 2かも遠い側に配置されている第1・・ンドル部分28と枢支ビン26の他方の 側に配置されている’1742・・ンドル部分30を備えている。各第コ・・ン ドル部分30はヨーク25の軸方向スロット31と・・ウジング12の軸方向ス ロット32の中に伸びている。第4図かられかるように、スロット31はヨーク 25の両側を通って中心・方向に伸びており、かつヨーク25の基部からヨーク 25の末端に隣接する環状リング33まで末端方向に伸びている。
ヨーク25のスロット31により、第2・・ンドル部分30が・・ウジング12 0両側のスロット32内へ中心方向かつ末端方向に動(ことができるようになっ ている。
さらに第4図かられ−かるように、・・ウジング12のスロット32はその管状 壁から中心方向に、枢支ピン26の基部側に伸びている。
スロット31と32の寸法ならびに配置は、ステープラ10内にあって、第1・ ・7ドル部分28が蝶ナツト16と・・ウジング12(蝶ナツト16の内側)の 方に動く際に第2・・ンドル部分30がヨーク25または・・ウジング12の管 状壁に妨害されることな(スロット31と32内を十分な距離だけ中心方向かつ 末端方向に動くことができるようになっている。この点で、各スロット31と3 2は各第コ・・ンドル部分30より幾分幅が広くかつ枢支ピン26の付近から基 部方向に伸びている。・・ウジング12の各スロット32の基部側の端部は、w I/ハンドル部分28がハウジング12と蝶ナツト16から横方向に離れるよう に動く際に、6第2・・ンドル部分30がスロット3−2から横方向外向きに動 かないように十分に末端方向に伸びている。
ステープラ10の蝶ナツト16を回転させると中心ロッド18を、・・ウジング 12の軸方向の孔14内および蝶ナツト16の軸方向の孔17内において末端方 向または基部方向に動かすことができる。これは中心・ロンド18のその基部に 近い側にある直径の小さい部分19にねじが設けられ、このねじが第3図および 第4図に示されているように蝶ナンド16の軸方向の孔17のくびれ部分17a の上にあるねじとかみ合っているためである。
中心ロッド18の末端に近接しているもう一つの部分19aは中心ロッドの両側 に一対の軸方向のキー溝(図には示されていない)を有している。一対のキー( 図には示されていない)が、中心ロッド18に隣接したステープル支持アッセン ブリ22の内面の両側に設けられており、第コの一対のキー(図には示されてい ない)が、中心ロッド18に近接したアンビルアッセンブリ20の内面の両側に 設けられている。このキーは、蝶ナツト16が回転して中心ロッド18を軸方向 に動かし、アンビルアッセンブリ20とステープル支持アッセンブリ22が中心 ロッド18上で所定の支持された方向に動いて組織を適切に固定する際に、・・ ウジング12に対して中心ロッド18が回転しないようにこのキー溝に嵌合して いる。
ステープラ10の中心ロッド18の基部側端部には本発明のインジケータ34が 設けられている。所望によりインジケータ34は中心ロッド18と一体にするこ とができる。しかしながら、第2図に最もよく示されているように、インジケー タ34は中心ロッド18に取付けられター 般に円筒状のインジケータねじ35 を備え℃いるのが好ましい。インジケータ34はまた、インジケータねじ35の 側面35aの基部に摩擦により保持されているほぼ管状のインジケータスリーブ 36を備えているのが好ましい。インジケータ34と、インジケータねじ35お よびインジケータスリーブ36は蝶ナツト16の孔17内に配置されている。
インジケータねじ35の末端35bはねじ付きの突き出し部37を備えている。
この突き出し部37は中心ロッド18の基部にあるねじ付き穴19bKねじ込み されている。中心ロッド18とインジケータねじ35を合わせた軸方向の長さく いっしょにねじ込みされている場合)および・・ウジング12と蝶ナツト16を 通過する同軸の孔14と17を合わせた軸方向の長さは、インジケータねじ35 の基部側端部35cが蝶ナツト16の基部側表面16aとフラッシュすなわち同 一平面となる時に、アンビルアッセンブリ20が一般的に適切な空間の範囲内で ステープル支持アッセンブリ22から隔置されているような長さであるのが好ま しい。
インジケータスリーブ36はその111面36aの上に、直径方向反対側に一対 の軸方向に伸びるインジケータマーキング38を備えている。各インジケータマ ーキンク38は中尼・ロッド16の側面と蝶ナツト16の孔17のP[iとの間 に配置される。各インジケータマーキング38はインジケータスリーブ36の末 端に近接しかつインジケータスリーブの側面36aの色(例えは白)と対照的な よく目につく色(例えば赤)IC層色されていることが好ましい。
また本発明によれば第2図および第3図に最もよく示されているように、蝶ナツ ト16の側面16bの直径方向反対側に一対の窓39が設けられている。6窓3 9は蝶ナンド16内に配置されており、アンビルアッセンブリ20とステープル 支持アッセンブリ22が一般に適切な間隔の範囲にある時に、中心ロッド18に 連結されているインジケータ34のインジケータマーキング38の7つがこの窓 に配置されるようになっている。窓39の位置および形は、アンビルアッセンブ リとステープル支持アッセンブリとの間の間隔が一般に好ましい間隔の範囲内に ある時かつその時にのみ蝶ナツト16が回転してインジケータマーキング38の それぞれが蝶ナツト16の側面16b[よって横方向からカバーされず、むしろ 窓39の異なる一方の末端の面39aの基部方向でこれに隣接した窓39の異な る一方からステープラ10の使用者に連続的に見えるようになっている。この点 に関し、アンビルアッセンブリとステープル支持アッセンブリとの間隔が一般に 好ましい間隔の範囲内にない場合には、インジケータマーキング38は蝶ナツト 16の側面16bによって側面が覆われるために窓39から見えない。
第9図および第7図から最もよくわかるように、蝶ナツト16が//2回転する とアンビルアッセンブリ20が一般に好ましい間隔の範囲内でステープル支持ア ッセンブリ22に対して軸方向に動くように、それぞれの窓39%にその末端面 39aは蝶ナツト16に対してインジケータマーキング38の7つの走行ら旋パ スと一致するら旋形状をもっている。この点に関し、それぞれの窓39とその末 端面39aはら旋の//2回転を定義し、このら旋の/回転の前進距離は蝶ナツ ト16と中心ロッド18の嵌合ねじのピッチと同じである。従って6窓39の末 端面39aは蝶ナツト16の側面16bにあるら旋回39aからなり、このら旋 回は蝶ナンドが回転しインジケータマーキングがら旋回39aの軸方向に配置さ れる際に、蝶ナツトに対してインジケータマーキング38のら旋バスの基部側で 向き合い実質的にこのら旋パスと平行になる。また第ダスおよび第7図から最も よくわかるように、一方の窓39の末端面39aの末端398′は蝶ナツト16 と中心ロッド18の嵌合ねじの前進距離の半分だけ、すなわち、蝶ナツト16が //2回転する際に各インジケータマーキング38が前進する距離だけ、他方の 窓39の末端面39aの基部に近い端物398″から軸方向に偏位している。そ の結果、窓39の末端面39aの軸方向に偏位した末端39a′と基部に近い端 部39a“は、蝶ナツト16の側面16bの直径方向反対側の一対の軸方向に伸 びる肩39bを形成し℃いる。
6窓39の寸法は重要ではない。しかしながら6窓39の軸方向の幅は各インジ ケータマーキング38の露出部分の軸方向の長さの約2倍あって、アンビルアッ センブリ20とステープル支持アッセンブリ220間の間隔が一般に好ましい間 隔の範囲内にある時に窓39の末端面39aの基部側のインジケータマーキング 38の全部分が窓39からはりぎり見えるようにするのが好ましく・0透明プラ スチツク製の拡大レンズ40を6窓39に設けて、6窓39のそれぞれのインジ ケータマーキング38がよく見えるようにすることも好ましい。
それぞれのインジケータマーキング38の露出部分の軸方向の長さは蝶ナツト1 6が//2回転する間に進むインジケータマーキングの距離に等しい。それぞれ のインジケータマーキング38はまた実質的に長方形の形をしているのが好まし い。この点に関し、それぞれのインジケータマーキング38の基部に近い側の端 部38 aがインジケータスリーブ36の末端と角度をなし、その角度が6窓3 9の末端面39avcよって定義されるら旋の//2 回転にほぼ等しいことが 特に望ましい。それによって、アンビルアッセンブリ20とステープル支持アッ センブリ220間の間隔が一般に好ましい間隔の範囲内に入るまでは、インジケ ータマーキング38の部分は蝶ナツト16の窓39から全く見えない。
所望により二組の平行な軸方向に伸びる印41を、第2図および第3図に最もよ く示されているように、蝶ナツト16の側面16bの円周に設けることができる 。この印41の組は蝶ナツト160反対側にある。印41の各組は窓39の異な る一方に隣接しておりかつ各組の6印はその隣接する窓39から軸方向に配置さ れる。インジケータマーキング38が窓39から見ることができ、かつ印41か ら軸方向に配置されている場合には、6印41はアンビルアッセンブリ20とス テープル支持アッセンブリ22との間の特定の間隔(一般に好適な間隔の範囲内 にある)と関連している。印41は通常の長さの単位で目盛りをつけることかで さ、蝶ナツト16が//、1回転する際にインジケータマーキング38が進む距 離に等しい間隔の範囲をカバーすることができる。この印41によって、ステー プラの使用者は a)アンビルアッセンブリとステープル支持アッセンブリとの 間の間隔を決めることおよびb)アンビルアッセンブリとステーブル支持アッセ ンブリとの間に所定の間隔を与えること、例えば固定すべき組織の厚さに相当す る間隔を与えることができる。この点に関し、アンビルアッセンブリとステープ ル支持アッセンブリとの間の所定の間隔は、各インジケータマーキング38が窓 39の1つから見ることができ、かつ所定の間隔に相当する蝶ナツト16上の特 定の印41の軸の方向に配置されるまで蝶ナツト11を回転することにより簡単 に得ることができる。
印41の数およびその位置は重要ではない。この点に関し、印41の数はアンビ ルアッセンブリ20とステーブル支持アッセンブリ22との間にどの程度正確な 間隔が必要とされるかということVこよって決められる。第1図〜第g図の実施 態様から明らかなように、3つの印41の組を用いてアンビルアッセンブリとス テープル支持アッセンブリとの間の/3trrm(例えば25聰〜10調)の間 隔の範囲を分割することができる。しかしながら、第9図〜第1/図の別の実施 態様に示されているように、3つ以上の印を有する組を用いて、例えば乙つの印 141を用い℃、このような幅の間隔を分割することができる。
本発明によれば、アンビルアッセンブリ20とステーブル支持アッセンブリ22 との間の間隔が一般に適切な間隔の範囲内にある場合には、インジケータマーキ ング38は:a[ナツト16の窓39の異なる7つと反対側に位置しかつこの中 に見ることができ:b)窓39の異なる1つの末端面39aの基部に近い方に見 ることができかつこれに隣接し;およびC)蝶ナツト16の1つの印41から軸 方向に配置されあるいは2つの印410間に軸方向に配置されている。これによ ってステープラ10の使用者は、−目で、アンビルアッセンブリとステーブル支 持アッセンブリとの間の間隔が一般に適切な間隔の範囲内にあることを知ること ができる。これによってまた、アンビルアッセンブリとステープル支持アッセン ブリとの間の間隔は、単に蝶ナツト16を回転させ中心ロッド18、アンビルア ッセンブリ20およびインジケータ34を、各インジケータマーキング38が印 41の軸方向K 配a gれてアンビルアッセンブリとステーブル支持アッセン ブリとの間の所望の間隔が得られるようになるまで軸方向に動かすことによって 容易に変えることができる。
また本発明によれば、アンビルアッセンブリとステープル支持アッセンブリとの 間の間隔が一般に適切な間隔の範囲内にない場合には、インジケータマーキング 38はいずれも、蝶ナツト16の窓39の1つに面して配置されず、従って見え ない。むしろ各インジケータマーキング38はそれぞれの窓39の末端面39a から末端方向に配置されており、従って蝶ナツト16の側面16bによって隠さ れている。インジケータマーキング38が窓39の末端側のら旋回39aの末端 部398′と基部398″との間の肩39bの下から現われ、かつ蝶ナツト16 の側面16bの下から現われてくるのは、蝶ナツト16が回転してインジケータ マーキング38を、a)第9図に示されているように、インジケータマーキング が蝶ナツトによって隠されている位置から、b)第7図に示されているように窓 39の末端面39aの基部側の位置まで基部方向に移動させた場合だけである。
次にさらに蝶ナツト16を回転して中心ロッド18とインジケータマーキング3 8を第7図に示されている位置の方向に動かすと、各インジケータマーキング3 8は蝶ナツトが//コ回転する際に蝶ナツト16に対して窓39の異なる7つの 末端ら旋回39aに平行なら族パスに沿って、a)適切な組織固定を行うための アンビルアッセンブリのステープル支持アッセンブリとの間の適切な最大間隔( 例えば2、5 tan )を表わす蝶ナツトの片側にある第1印41に隣接する 末端面39aの末端部398′から、第7図に示されているように、b)適切な 組織固定を行うためのアンビルアッセンブリとステーブル支持アッセンブリとの 間の適切な最小間隔(例えば10欄)を示す蝶ナツト16の同じ側にある最後の 印41に隣接する末端面39aの基部に近い端部39a″まで動くことがわかる 。この点に関し、蝶ナツト16が//2回転すると各インジケータマーキング3 8は一定の軸方向の長さとして連続的に見ることができ、また各インジケータマ ーキング38は窓39の一方の//コ回転する、ら旋、末端面39a[%つて走 行することがわかる。従ってステープラ10の使用者は、蝶ナツト16の片側を 見るだけで、インジケータマーキング3Bの一方が窓39の一方から見えるなら アンビルアッセンブリとステーブル支持アッセンブリの間の間隔が一般に好まし い間隔の範囲内にあるかどうかが一目でわかる。中心ロッド18の基部方向への 移動は、ワッシャー52によって止められ同時に、インジケータマーキング38 が適切な最小間隔に相当する最後の印41と完全に一致するようにするのが好ま しい。
第3図に示されているように、インジケータねじ35)lll1面35 aは中 心ロッド18のねじ山部分19から横方向に伸びている。その結果、中心ロッド 18が動いてアンビルアッセンブリ20をステープル支持アッセンブリ22から 遠去かるようにその最大限まで移動させると、インジケータねじ35の末端35 bは内側に突き出している肩42と当接するようになる。この肩42は蝶ナツト 16の孔17内に配置され孔17のねじ山のあるくびれだ部分17aの基部に配 置されている。インジケータねじ35の末端W35bと肩42は中心ロッド18 の末端方向への運動を制限する機能を有する。
第6図から明らかなように、管状プッシャー50がステープラ10の・・ウジン グ12の軸方向の孔14内に設けられている。このプノンヤ−50は孔14内を 軸方向に動くようになっている。特にプッシャー50の末端部は、ステーブル支 持アッセンブリ220基部側の端部内で末端方向に動きかつステープル支持アッ センブリの内部に動いてステーブル支持アッセンブリを作動させ、その結果その ナイフ22bがアンビルアッセンブリ20のナイフ切断リング内部に向かって末 端方向に押され、かつステーブル22aの列がアンビルアッセンブリのポケツ) [対して末端方向に押されてステープルを折り曲げ組織を切断しかつ固定するよ うになっている。中心ロッド18はプッシャー50の軸方向の孔51内に配置さ れ、孔51内で軸方向に動くようになっている。ブツシャ−50は蝶ナツト16 の軸方向の孔17のくびれたねじ山部分17aの末端側に配置されている。軸方 向の孔17のくびれた部分17aの周囲で蝶ナツト16が、a)プッシャー50 .b)ハウジング12またはC)直径の小さい部分19の末端側に配置されてい る中心ロッド18の部分によって損傷されるのを防止するために、プッシャー5 0と・・ウジフグ120基部に近い側で中心ロッド18の直径の小さい部分19 の周囲に環状スラストワッシャー52が設けられている。
また第6図から明らかなようにハウジング12のその基部に近い側面に管状の溝 53が設けられている。また蝶ナツト16の軸方向の孔17の末端には内側に伸 びる環状肩54が設けられ、またヨーク250基部側端邪には内側に伸びる環状 肩55が設けられている。この蝶ナツトの肩54とヨークの肩55は・・ウジン グ12の溝53にはまり込み、蝶ナツト16の末端がヨーク250基部側の端部 と当接するようになっている。
また第6図から明らかなように、プッシャー50の両側に一対の軸方向のスロッ ト62があり環状の壁を突き抜けて伸びている。各スロット62の幅は第二バン ドル部分30の1つの幅より幾分大ぎ(なっている。各スロット62の末端部は 第1・・ンドル部分28がハウジング12の方向に押されて第コ・・ンドル部分 が末端方向に、かつ中心方向に動く際[第2・・ンドル部分3011cよって末 端方向に押されるように配置されている。スロット62の末端はまた第コ・−ン ドル部分30の末端方向の運動によって十分な距離、末端方向に動かされ、ステ ープル支持アッセンブリ22がプッシャー50の末端方向の運動によって作動す るように配置されている。
また第4図から明らかなように、中心ロッド18の側面18aには円周面に軸方 向の溝64が設けられている。
この溝640基部側の端部は、第1・・ンドル部分28が・・ウジング12の方 向に押されかつ(@6図に示されているよ’1m)インジケータマーキング38 が蝶ナツト16の窓39から見える際に、枢支ピン26から遠い方のそれぞれの 第二バンドル部分30の端部66が溝64の基部に近い、中心ロッド1Bの側面 18aと当接することなく溝64内に中心方向に動くことができるように配置さ れている。また溝64の末端側端部は、ステーブル支持アッセンブリ22がプッ シャー50の末端方向の運動によって作動されるまで、6第2・・7ドル部分3 0の遠方端部66が溝64の末端側端部と当接することなく溝64内で末端方向 に動くことができるように配置されている。
さらに第6図から明らかなように、それぞれの第二バンドル部分30はヨーク2 5の軸方向のスロット31の一方と、ハウジング12の軸方向のスロット32の 一方ヲ通り、プッシャー50の軸方向のスロット62の一方の中に伸びている。
本発明に従えば、($3図に示されているように)インジケータマーキング3B が蝶ナツト16の窓39から見えない場合には、それぞれの第二バンドル部分3 0の遠方端部66が溝64の基部に近い側で中心ロッド18の側面18aと当接 し、末端方向にかつ溝64内に中心方向に動(ことができないようになっている 。(第4図に示されているように)インジケータマーキング38が蝶ナツト16 の窓39から見える時だけ、それぞれの第二バンドル部分30の遠方端部66は 溝64の基部に近い側で中心ロット18の側面18aと当接することなく中心ロ ッド18内て末端方向に、かつ溝64内に中心・方向に自由に動くことができる 。これは枢支ピン26から遠いそれぞれのm2ハンドル部分3゜の端部66が、 枢支ピンから中心ロッド18の側面18aまでの横方向の距離より大きな距離だ け枢支ピンから隔置されるためである。
本発明のインフケ−2340組立てはステープラ1゜の中心ロッド18の上で先 ず蝶ナツト16を回転させて中心ロット18を基部方向に動かすことによって行 うことかでさる。蝶ナツト16は回転することができな(なるまで回転させる。
この点で、中心ロット18はスラストワッシャー52に当接する。次にインジケ ータねじ35の末端35bにあるねじ付き突起37を中心ロッド18の基部側端 部のねじ付き穴19bに挿入し、ねじ嵌合させる。このねじ付き突起37によっ てインジケータねじ35を中心ロッド18に取り付けると、インジケータねじの 基部側端部35cは蝶ナツト16の基部側端部16aとほぼ同一平面となる。次 にインジケータスリーブ36を蝶ナツト16の孔170基部側端部内に挿入し、 インジケータねじ350基部側端部35cおよび側面35aを越えて末端方向に 強制的にスライドさせる。インジケータスリーブ36はインジケータマーキング 38のそれぞれが窓39の末端面39aの基部側端部39a″から基部側に、か つ蝶ナツト16のそれぞれの側の最後の印41の軸方向(例えば10椙)に配置 されるように、インジケータねじ35の基部側端部および側面35aを越えて末 端方向に押付けられる。インジケータスリーブ36はイノジケータねじ35の上 を末端方向に押され、それぞれのインジケータマーキング38が°a)窓39か ら見え、b)窓39の末端面39aに隣接し、かつC)蝶ナツト16が//2回 転する際にインジケータマーキング38が前進する長さだけ末端面39aから基 部方向に伸びるようにし、それによって蝶ナツト16が//2回転するとインジ ケータマーキング38が窓39から見えなくなり、逆方向に回すと中心・ロット 18とインジケータ34が末端方向に動くようにする。
ステープラ10を吻合手術に使用する場合を概略的に第1図および第S図に示す 。中空の器官70の病組織を通常の方法により除去した後、ステープラの末端を 吻合すべき組織72と74の2つのセクションの第1中空セクション72から挿 入する(例えば直腸アプローチの手法を用いて大腸の吻合を行う際にステープラ を直腸から挿入スる)。アンビルアッセンブリ20だけが第1組織セクション7 2の端部より前方に伸びている。次に蝶ナツト16を第1図に示されている位置 まで回転してアンビルアッセンブリ20をステーブル支持アッセンブリ22から 末端方向に動かす。蝶ナツト16を回転すると中心ロット18がプッシャー50 の孔51を肯って末端方向に動さ、インジケータねじ35の末135bが蝶ナツ ト16の軸方向の孔17内の環状の肩42と当接する。
次に組織72の第1セクシヨンの端部をステーブル支持アッセンブリ22をおお うようにかぶせ、中心ロット18の周りに結び付ける。第2組織セクション74 の端部をアンビルアッセンブリ20をおおうようにがぷせ中心ロッド18に結び 付ける。周知の・l巾着・l縫合を用いて中心・ロット18の周りに中空器官の 組織を固定することもできる。
次に蝶ナツト16を再び反対方向に回転させて中心ロッド18とアンビルアッセ ンブリ20を基部方向に動かす。蝶ナンド16を回転してインジケータスリーブ 36の上にあるインジケータマーキング38が蝶ナツト16の窓39から見える ようにする。このことはステーブル支持アッセンブリからアンビルアッセンブリ までの間隔が一般に適切な間隔の範囲内にあることを示している。
その結果、ステープラ10のハンドル24をそのハウジング12の方向に強く握 るだけで組織はステープラ10によって固定される。
所望により、アンビルアッセンブリとステーブル支持アッセンブリの間の間隔を もう少し小さくすることもできる(例えば通常より幾分厚みが少ない組織を固定 するような場合)。これは蝶ナツト16をさらに回転してアンビルアッセンブリ をさらに基部方向に動かし、窓39から見て、インジケータスリーブ360両側 にあるインジケータマーキング38を、蝶ナツト16上にあり、アノビルアッセ ンブリとステーブル支持アッセンブリの間のより小さな所望の間隔に適合する印 41の軸方向に配置することにより行うことができる。
所望により、アンビルアッセンブリとステーブル支持アッセンブリの間の間隔を より大きくすることもできる(例えば通常より幾分厚みの犬ぎい組織を固定する 場合)。
これは蝶ナツト16を回転し℃アノビルアッセンブリを末端方向に動かし、窓3 9から見て、インジケータスリーブ36の各インジケータマーキング38が、ア ンビルアッセンブリとステーブル支持アッセンブリの間のより犬ぎな所望の間隔 に適合する印41の軸方向に配置されるようにすることによって行うことができ る。
アンビルアッセンブリとステーブル支持アッセンブリの間の所望の間隔が達成さ れたら、ステープラを用いて組織セクションT2と14を固定することができる 。第1ハンドル部分28の穴46がらワイヤ安全ロック44を取り外す。次にハ ンドル24を強く握って、第1ハンドル部分28を蝶ナツト16とハウジング1 2の方向に押し付ける。これによって第コハンドル部分3oが枢支ピン26の周 りに回転し、ヨーク25の軸方向のスロット31ならびにハウジング12の軸方 向のスロット32を通って末端方向に、かつ中心方向に動く。これによってまた 第コハンドル部分30が:プッ/ヤー50の軸方向のスロット62を通して末端 方向に、がっ中・し・方向に動さ;中心・ロット18の軸方向の溝64内に末端 方向にかつ中心方向に動ぎ;かつプッシャー50のスロット62の末端側縁部に 向かって末端方向に動く。第コハンドル部分30のこのような運動は溝64の基 部に近い部分のような中心ロッド18の側面18aのいがなる部分からの妨害も 受けない。またこの運動は第2ハンドル部分30が中心ロッド18の溝64の末 端と当接するまで続けることができる。この点に関し、ハンドル24を強く握る とそれぞれの第2ハンドル部分30が中心方向かつ末端方向に動きかつプッシャ ー50のスロット62の末端側の縁部を末端方向に押し、プッシャー50を末端 方向に動かし、ステーブル支持アッセンブリがブツシャ−50により作動せしめ られ、かつステーブルが組織の適当なセクションを貫通してアンビルアッセンブ リのポケットに対して末端方向に押付けられ、ステーブルがアンビルアッセンブ リのポケットによって折り曲げられ、組織の固定縫合線とステーブルとの間の組 織のセクション部分は環状ナイフとナイフ切断リングによって切断される。
第9図〜第1/図には本発明のインジケータのもう7つの実施態様134が示さ れている。このインジケータ134は第1図〜第g図のステープラ10と実質的 に同じ外科用ステープラ110に組み込まれている。第9図〜第//図のステー プラ110とインジケータ134においては、第1図〜WJg図のステープラ1 0とインジケータ34の要素に対応する要素は、第1図〜第g図のステープラ1 0およびインジケータ34の要素と100だけ異なる1照符号が付けられている 。
第9図〜第1/図のインジケータ134においては、インジケータねじ135が 設けられ、このインジケータねじ135はインジケータスリーブ136を備え、 このスリーブ136はインジケータねじの側面135aの基部に近い端部に摩擦 により保持されている。インジケータねじ135の末端部135bにはねじ付き 突起137が設けられ、この突起137はステープラ110の中心ロッド(示さ れていない)の基部に近い端部にある穴の中にねじ込むことができる。インジケ ータスリーブ136の末端部に隣接し℃、その側面136aに7つの軸方向に伸 びているインジケータマーキング138がある。
ファスナー110の蝶ナツト116の側面116bに7つの窓139が設けられ 、この窓139は蝶ナツト116の両側面に伸びている。透明なプラスチック製 管状拡大レンズ140が蝶ナツト116の孔117の基部および窓139に挿入 されている。
所望により蝶ナツト116の側面116bの局面に7組の平行な軸方向に伸びる 印141を設けることもできる。6印141は窓139から軸方向にこれに隣接 して配置されている。6印141は、インジケータマーキング138が窓139 から見え、かつ印から軸方向に配置されている場合に、ステープラ110のアン ビルアッセンブリとステープル支持アッセンブリ(示されていない)との間の特 定の間隔に関連をもっている。
ステープラ110のアンビルアッセンブリとステープル支持アッセンブリの間の 間隔が一般に好ましい間隔の範囲内にある時かつこの時にのみ、蝶ナツト116 が完全に一回転し、蝶ナツト116の単一の窓139がら単一のインジケータマ ーキング138が連続的に見えるように、ステーブル110とそのインジケータ 134は適合せしめられている。この点に関し、インジケータマーキング138 は、アンビルアッセンブリとステープル支持アッセンブリとの間の間隔が一般に 好ましい間隔の範囲内にない場合、蝶ナツト16Vcより側面がカバーされ見え なくなる。窓139とその末端面139aは、蝶ナツト116が完全に一回転す る際に、蝶ナツト116Vc対してインジケータマーキング138の走行のら族 パスと一致するら旋形状を有するのが好ましい。
蝶ナツト116が回転して中心ロッドとアノビルアッセンブリを基部方向に動か し、アンビルアッセンブリとステープル支持アッセンブリが一般に好ましい間隔 の範囲内になると、インジケータマーキング138が窓139の末端面139a の末端側端部139a’と基部側端部139a″との間の蝶ナツト116の肩1 39bの下から現われた後に、窓139の中に現われてくる。次にインジケータ マーキング138は蝶ナツト116が完全に一回転する間に窓139のら施米端 面139aに平行なら旋バスに溢って、蝶ナツト116に対して:a)組織を固 定するのに適切なアンビルアッセンブリとステープル支持アッセンブリとの間の 適切な最大の間隔(例えば2、3 ran )を示している蝶ナツト116の片 側にある@/印141に隣接している窓139の末端面139aの末端部139 a’から、b)第1/図に示されているように適切な組織の固定をするためのア ンビルアッセンブリとステープル支持アッセンブリとの間の適切な最小間隔(例 えば10Tra)を示している蝶ナツト116の他方の側にある最後の印141 に隣接している窓139の末端面139aの基部側の端部139 a ″まで動 く。
第1図〜第g図のステープラ10のインジケータマーキング38とは異なり、第 7図〜第1/図のステープラ110のインジケータマーキング138は、蝶ナツ ト116が殆ど完全に一回転する間、蝶ナツト116の窓139から見える。従 つ℃、ステープラ110のインジケータマーキング138の見ることができる移 動距離は、第1図〜第g図のステープラ10のΩつのインジケータマーキング3 8のそれぞれの見ることができる移動距離のほぼコ倍である。その結果、ステー プラ110の7つのインジケータマーキング138は、第1図〜第g図のステー プラ10の一対のインジケータマーキング38よりも、ステープラ110のアン ビルアッセンブリとステープル支持アッセンブリとの間の間隔を一層正確Vc演 :1定することができる。それでもやはり、例えば係楕中の出願7Jf、 /  97,679号記載のステープラのアンビルアッセンブリとステーブル支持アッ センブリの間の間隔が一般に好ましい間隔の範囲内にあることを一目で知るには 、第1図〜第g図のステープラ10のように、一対のインジケータマーキング3 8と、一対の窓39と、二組の印41を備えたインジケータ34が一般に好まし い。
ここに説明した実施態様は本発明の原理を単に例示するにとどまり、本発明の精 神および範囲から逸脱することなく当業者によって各種の変形が可能であること 、従って上記形状は単に好ましい実施態様に過ぎないことが理解されるであろう 。
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Claims (1)

  1. 【特許請求の範囲】 / 外科用ステープラにおいて゛ a)アノビルと; b)前記アンビルの基部方向に配置されているステープル支持アッセンブリとを 備え;該ステープル支持アッセンブリはそのステープルが前記アンビル罠対して 末端方向に押されてアンビルアッセンブリとステープル支持アッセンブリとの間 で組織をステープルで留めるように作動するようになっており;C)前記アンビ ルまたはステープル支持アッセンブリに連結され、軸方向に動くようになってい るねじ込みロッドと;d)前記ステープル支持アッセンブリの基部方向に配置さ れち・つ前記ねじ込みロッドとねじ嵌合し、回転すると前記ねじ込みロッドを軸 方向に動かす回転自在の移動手段を備え;該移動手段は、前記ねじ込みロッドが ステープル支持アッセンブリに連結されている場合にはアノビルに、また前記ね じ込みロッドがアンビルに連結されている場合にはステープル支持アッセンブリ に、回転自在に連結されており;かつ前記移動手段とねじ嵌合して(・るねじ送 入ロッドの部分は前記移動手段内部に配置されており;かつe)ねじ込みロッド と移動手段に連結された手段とを有し、該手段は、移動手段に対するねじ込みロ ッドの軸方向の位置により、アンビルアッセンブリとステープル支持アッセンブ リとの間の間隔がアンビルアッセンブリとステープル支持アッセンブリとの間で 組織をステープルで留めるのに一般に適している間隔の範囲内にあることを表示 するものであり;前記改良された表示手段(e)が: 前記ネじ込みロッドに連結されかつねじ込みロッドと移動手段との間で移動手段 内を軸方向に移動するようになっているインジケータマーキングと;前記移動手 段の側面にあるら篩面とを備え、該ら篩面は、前記移動手段が回転してインジケ ータマーキングがら篩面の軸方向に配置されている際に移動手段に対して基部方 向にありインジケータマーキングのら旋バスに対してほぼ平行であり。 アンビルアッセンブリとステープル支持アッセンブリとの間の間隔が一般に好ま しい間隔の範囲内にある時およびこの時にのみ、前記移動手段が回転し、前記イ ンジケータマーキングが移動手段によって側面がカバーされずかつ前記ら篩面か ら基部方向に連続的に見ることができかつ前記ら篩面に隣接していることを特徴 とする上記外科用ステープラ。 ユ 前記表示手段telが:ねじ込みロッドの両側に配置されている2つのイン ジケータマーキング;および移動手段の両側に配置されているλつのら篩面とを 備え;アンビルアッセンブリとステープル支持アッセンブリの間の間隔が一般に 好ましい間隔の範囲内にある際かつこの際にのみ、移動手段が//2回転すると 、それそれのインジケータマーキングがら臆面の異なる一方に隣接し連続してそ の基部方向に見えていることを特徴とする請求の範囲第7項に記載のステープラ 。 3 インジケータマーキングがら臆面に隣接して見える際に、それぞれのインジ ケータマーキングが移動手段が//Ω回転する際にそれぞれのインジケータマー キングが前進する距離に等しい距離だけら臆面から基部方向に伸びている請求の 範囲第コ項に記載のステープラ。 グ インジケータマーキングが、はぼ管状のインジケータスリーブの側面にあり 、該インジケータスリーブがねじ込みロッドの基部側端面に連結されているほぼ 円筒状の部材の側面の基部側端部に摩擦により保持されている請求の範囲第7項 に記載のステープラ。 S インジケータスリーブが、ねじ込みロッドの基部側端部にねじ留めされてい るインジケータねじの基部側端部にある請求の範囲第9項に記載のステープラ。 ム ねじ込みロッドとインジケータねじを連結した際の軸方向の長さが、インジ ケータねじの基部側端部が移動手段の基部側端部と同一平面にある際にアンビル が一般に好ましい間隔の範囲内でステーブル支持アッセンブリから隔置されてい るような距離である請求の範囲第5項に記載のステープラ。 7 インジケータマーキングがインジケータスリーブの末端側端部に隣接してい る請求の範囲第9項に記載のステープラ。 と インジケータマーキングの基部側端部が、インジケータスリーブの末端側端 部と角度をなし、その角度がら臆面によつ℃定義されたら旋とほぼ同じ角度であ る請求の範囲第7項に記載のステープラ。 9 ら臆面が移動手段の側面にある窓の末端面からなり;前記窓は、移動手段が 回転してインジケータマーキングが窓の軸方向に配置されている際に移動手段に 対してインジケータマーキングのら族バスに相当するら旋形状を有している請求 の範囲第1項に記載のステープラ。 10各ら臆面が、移動手段の側面の両側にある一対の窓の異なる一方の末端面か らなり、6窓は、移動手段が回転してインジケータマーキングが窓の軸方向に配 置されている際に移動手段に対してインジケータマーキングのら旋パスに対応す るら旋形状を有している請求の範囲第2項に記載のステープラ。 // 複数の実質的に平行な軸方向に伸びる印が、ら臆面に隣接しら臆面の軸方 向に移動手段の側面に設けられ6印は、インジケータマーキングがら臆面に隣接 して見えかつ印の軸方向に配置されている際にアンビルアッセンブリとステーブ ル支持アッセンブリがそれらの間17c%定の間隔を有していることを表示する ものである請求の範囲第1項に記載のステープラ。 /2二組の実質的に平行な軸方向に伸びる印が、移動手段の側面の両側に設けら れ;各組は、2つのら臆面の異なる一方に隣接しがっそれがら軸方向に配置され ており、6印は、インジケータマーキングがら臆面に隣接して見えかつ印の軸方 向に配置されている際にアンビルアッセンブリとステーブル支持アッセンブリが それらの間に特定の間隔を有していることを表示するものである請求の範囲第2 項に記載のステープラ。 /3a)軸方向の孔を有する管状ハウジングと;b)該ハウジングの孔内に軸方 向に配置されかつハウジングの孔内で末端方向および基部方向に動くようになっ ている中心・ロッドと: C)該中心ロッドの末端側端部に所定の支持された方向で取付けられているアン ビルと; d)ハウジングの末端側端部に、アンビルの基部側に、所定の支持された方向で 取付けられているステーブル支持アッセンブリとを備え;該ステーブル支持アッ センブリは、そのステープルがアノビルに対して末端方向に押されアンビルアッ センブリとステーブル支持アッセンブリとの間で組織を固定するように作動する ようになっており;e)中心ロッドとねじ嵌合している回転自在の移動手段を有 し、該移動手段はその回転の際にハウジングの孔の中で中心ロッドを末端方向に および基部方向に動かすようになっており;該移動手段はハウジングに回転自在 に連結されかつハウジングの基部方向に伸びており;さらに移動手段とねじ嵌合 している中心ロッドの部分は移動手段内に配置されており: f)中心ロッドと移動手段に連結されている手段を有し、該手段はハウジングの 末端側端部に対する中心ロッドの末端側端部の軸方向の位置が、アノビルアッセ ンブリとステーブル支持アッセンブリとの間の間隔がアノビルアッセンブリとス テーブル支持アッセンブリとの間で組織を固定するのに一般に適している間隔の 範囲内であるということを表示するものである上記手段とを備えている外科用ス テープラにおいて。 前記表示手段(flが; はぼ管状のインジケータスリーブの側面の両側にあるΩつのインジケータマーキ ングを備え;該スリーブは中心ロッドの基部側端部にねじ留めされているほぼ円 筒状のインジケータねじの側面の基部側端部に摩擦により保持されており;かつ 各インジケータマーキングは中心ロッドと移動手段との間で移動手段内部におい て軸方向に動(ようになっており;かつ移動手段の側面の両側に一対の窓を有し ;6窓はら施米端面を有し、このら施米端面は移動手段が回転しインジケータマ ーキングが末端面の軸方向に配置されている際に移動手段に対してインジケータ マーキングのら旋パスに実質的に平行であり; 各インジケータマーキングはアンビルアツセンブリとステープル支持アッセンブ リとの間の間隔が一般に好ましい間隔の範囲内にある際およびその際にのみ移動 手段が回転して、移動手段によって側面が力・(−されず窓の異なる一方の末端 面の基部方向に連続して見えかつこれに隣接していることを!!!f微とする上 記外科用ステープラ。
JP57500770A 1981-02-17 1982-01-22 外科用ステ−プラのインジケ−タ Granted JPS58500053A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US234720 1981-02-17
US06/234,720 US4379457A (en) 1981-02-17 1981-02-17 Indicator for surgical stapler

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JPS58500053A true JPS58500053A (ja) 1983-01-13
JPS6134816B2 JPS6134816B2 (ja) 1986-08-09

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EP (1) EP0071630B1 (ja)
JP (1) JPS58500053A (ja)
AU (1) AU539898B2 (ja)
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CA (1) CA1176935A (ja)
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CA1176935A (en) 1984-10-30
EP0071630A4 (en) 1985-02-28
US4379457A (en) 1983-04-12
DE3276100D1 (en) 1987-05-27
BR8206395A (pt) 1983-01-25
WO1982002824A1 (en) 1982-09-02
EP0071630A1 (en) 1983-02-16
AU7498381A (en) 1982-08-26
JPS6134816B2 (ja) 1986-08-09
EP0071630B1 (en) 1987-04-22
AU539898B2 (en) 1984-10-18

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