JP2004305741A - 組織の2つの層の間に吻合を形成するための器具、および手術用カッターに取り付け可能で切断されるべき組織に隣接して配置可能な器具 - Google Patents

組織の2つの層の間に吻合を形成するための器具、および手術用カッターに取り付け可能で切断されるべき組織に隣接して配置可能な器具 Download PDF

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JP2004305741A
JP2004305741A JP2004109203A JP2004109203A JP2004305741A JP 2004305741 A JP2004305741 A JP 2004305741A JP 2004109203 A JP2004109203 A JP 2004109203A JP 2004109203 A JP2004109203 A JP 2004109203A JP 2004305741 A JP2004305741 A JP 2004305741A
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tissue
cutting tool
knife
distal end
shaft
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JP4672276B2 (ja
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Charles Hueil
チャールズ・ヒュイル
Edward Jenkins
エド・ジェンキンズ
Timothy Knodel
ティモシー・クノデル
Bryan Knodel
ブライアン・クノデル
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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
    • A61B17/11Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/1114Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00681Aspects not otherwise provided for
    • A61B2017/00685Archimedes screw
    • 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

Abstract

【課題】 組織に当接する組織面と、組織面の平面とほぼ平行に動いて切断器具に当接する組織の近位の端部まで延びていない切断線を形成する切断用具とを有する切断器具を提供することを目的とする。
【解決手段】 シャフト40と、シャフトの遠位の端部に取り付けられ第1の組織係合面16を有する第1の長寸のフォーク10と第2の組織係合面48を有する第2の長寸のフォーク21とを有すると共に少なくとも2つの間隔を置いて配置された組織固定具15の列50を長手方向の軸に実質的に平行に組織に取り付ける手段をさらに含むエンドエフェクタと、少なくとも2つの間隔を置いて配置された組織固定具の列の間を第1および第2の長寸のフォークの長手方向の軸とほぼ平行な方向に移動可能な切断用具18と、切断用具が組織固定具の列の近位の端部および遠位の端部の間のみを切るように切断用具を駆動するための手段12,26,28とを有する。
【選択図】 図2

Description

本出願が主張する優先権の基礎となる米国特許出願は同時継続中の米国特許出願第10/405,125号(代理人整理番号END−5035)と関連し、その米国特許出願第10/405,125号は本明細書で参照文献として引用される。
本発明は、大まかに言って中空器官または管の吻合手術を行なうための器具および方法に関する。
吻合の形成すなわち通常は別個の2つの内腔の間に外科的に通路を形成することは多くの外科手術で重要なステップである。吻合の形成が外科手術での重要なステップであることは小腸の一部が取り除かれて残りの部分が再結合されて飲食物を流すための完全な通路が形成される腸癌では真実である。腸管の吻合は肥満の患者の体重を減らすために行なわれる胃バイパス術でも行なわれる。胃バイパス術では胃を切除して胃ポウチが形成される。このときリニアカッターが食道の直ぐ遠位の側の胃の小さな部分を胃のその他の部分から分離するために繰り返して用いられる。次に空腸が遠位の部分でリニアカッターを用いて切離され、このときリニアカッターは組織を切断しかつ組織をステープルで留める。その後、ルーリムと呼ばれる空腸の遠位の部分が運ばれて胃ポウチと吻合され、これは胃腸吻合術と呼ばれる。胃腸吻合術はリニアカッター、円形ステープラー、または手縫いによって実施される。胃腸吻合術に続いて、リニアカッターはルーリムを切除された胃の下側部分の下に延在する空腸の部分に側側吻合するために用いられ、これは腸腸吻合術と呼ばれている。
典型的なリニアカッターは遠位の端部の器具を形成する2つのフォークを有する。一方のフォークはステープルを射出するためのカートリッジアセンブリと組織を切断するための切断用具とを含んでいて、もう一方のフォークはステープルに組織を保持するための適正な形状を与えるためのポケットを収容しているアンビルを有する。カートリッジアセンブリは一般的にフォークが組織に配置されて閉じられたときに切断されてステープルで留められるべき組織に当接する組織面を有する。内カッターの一例が1997年10月7日に発行された米国特許第5,673,840号に見られ、この米国特許は本明細書で参照文献として引用される。
リニアカッターを用いて側側吻合を形成する場合、外科医は2つの内腔を側壁が接触するように整合する。各内腔にリニアカッターのフォークを入れるための小さな開口が形成される。リニアカッターの一方のフォークが一方の内腔に挿入され、リニアカッターのもう一方のフォークがもう一方の内腔に挿入される。次にリニアカッターの2つのフォークはその間で各内腔の側壁の一部が圧縮されるように閉じられる。2つの小さな入り口用の開口はこれらの2つの圧縮された側壁の一部分のみによって分離されている。リニアカッターを発射することによってリニアカッター内の組織の近位の端部からフォークの端部付近の点まで延びる直線に沿って組織が切断されてステープルで留められ、元の入り口用の小さな開口から半径方向に外向きに伸びる切断線がステープルラインの間に形成される。不規則な形状の大きな開口が内腔の外側に向かって形成される。この内腔の外側に向かう大きな開口は2つの内腔の間の望ましい連通を維持しながら閉じられなければならない。形成されたばかりの通路をそのままに保ちながら内腔の外側に向かう開口を閉じることはより多くの手術技能および手術時間を必要とする困難な作業であるといえる。内腔は開口に針を通すときにひだを持つ傾向がありかつ不規則になる傾向があるので、外科医は大きな開口を縫合しながら内腔を均一に保つことが困難であるといえる。外科医は最初の使用に対して直角をなすよう適用されるステープル器具を用いて開口をステープルで留めることを好むかもしれない。2回目のステープリングが正確に働くとはいえ、2回目に適用されるステープリング器具を位置決めすることが難しいので、結果的に形成される通路の寸法を確かめることが難しくなる。
2つの内腔の間の通路がリニアカッターの部材用に形成された入り口用の開口まで近位の向きに延びていなければ、入り口用の2つの小さな開口だけを閉鎖すれば済む。その場合、内腔はより規則的な状態に留まり、通路の寸法はより予測可能なものとなる。作業フォーク内の組織の近位の端部まで延在しない切断線を形成するリニアステープリング器具が特許文献1(2000年5月23日にウォルフら(Wolf et al's)に付与された米国特許第6,066,144号)に記載されていて、この米国特許第6,066,144号は本明細書で参照文献として引用される。しかし、ウォルフらの切断ブレードは、チーズを切断するチーズワイヤのように、器具内で圧縮された組織の平面にほぼ垂直に動く。この切断動作は繊細な管組織には有効であるが、頑健な腸および胃の組織を切断するための最適な動作ではないかもしれない。組織の平面にほぼ平行な、そしてカートリッジの組織面にほぼ平行な切断がブレードに対する組織の面積をより少なくし、頑健な組織を切断するために必要とされる力を減らす。
米国特許第6,066,144号明細書(第8−10欄、第10図)
出願人は、組織に当接する組織面と、組織面の平面とほぼ平行に動いて切断器具に当接する組織の近位の端部まで延びていない切断線を形成する切断用具とを有する切断器具の必要性を認識した。出願人は、器具に対して切断線を配置するために、切断されるべき組織と平行に動きかつ切断されるべき組織に向かってそして切断されるべき組織から離れるように動かされる切断用具を有する器具の必要性を認識した。出願人は吻合術を実施するための器具の使用方法の必要性をも認識した。
組織面と組織面の平面とほぼ平行に移動可能でかつ器具と当接する組織の近位の端部まで延びていない切断線を形成できる切断用具とを有する器具が提供される。切断用具は形成される通路の長手方向の位置を調節するように切断されるべき組織に向けてそして切断されるべき組織から離れるように動かされる。器具は組織の切断された縁部を保持するための手術用固定具またはステープルをも含む。吻合手術用器具のフォーク用に形成された入り口用の2つの小さな開口まで切断線を延ばさずに2つの内腔を結合する方法も提供される。
本発明の新規な特徴が特許請求の範囲に詳細に記載されている。しかし、本発明自体は、本発明のさらなる目的および特徴と共に構成および操作方法に関して添付の図面と共に以下の説明を参照することによって最良に理解されるであろう。
本発明によれば、吻合を完成するために通路を形成した後に入り口用の2つの小さな開口だけを閉鎖すれば済み、内腔はより規則的な状態に留まり、通路の寸法はより予測可能なものとなる効果がある。
図1はカートリッジアセンブリ10およびアンビル21が装備された手術用カッターすなわちリニアカッター11の斜視図である。リニアカッター11はカートリッジアセンブリ10を保持しかつカートリッジアセンブリ10を用いて組織内に開口を形成することができるフレーム23を有する。リニアカッター11のフレーム23は閉鎖トリガ27および発射トリガ29をも提供する。閉鎖トリガ27および発射トリガ29は両方とも近位の向きに回動してカートリッジアセンブリ10およびアンビル21を組織に接近させるための機構を駆動する。
図1はリニアカッター11が組織を操縦するためにどのように構成されているのかをも示している。リニアカッター11はシャフトの近位の端部42およびシャフトの遠位の端部44を有するシャフト40を有する。カートリッジアセンブリ10およびアンビル21はシャフトの遠位の端部44でリニアカッター11に取り付けられた2つの直線状のフォークとして説明される。カートリッジアセンブリ10およびアンビル21は両方で組織に対して作業を行なうエンドエフェクタを構成する。カートリッジアセンブリ10は使用時に組織に接触するハウジング組織面16すなわち第1の組織係合面を提供し、アンビル21はアンビル組織面48すなわち第2の組織係合面を提供する。図1は組織を受容するように開いたカートリッジアセンブリ10およびアンビル21を示しているが、アンビル21はアンビル組織面48およびハウジング組織面16が実質的に平行になるまでカートリッジアセンブリ10に向けて回動してよい。実質的に平行な2つの組織面(アンビル組織面48およびハウジング組織面16)は2つの組織面の間に2つの組織面に平行な長手方向の軸46を画定する。
図2はカートリッジアセンブリ10の斜視図を示している。カートリッジアセンブリ10はカートリッジすなわちハウジング25を有していて、ハウジング25にはカートリッジアセンブリ10を用いて切断されかつステープルで留められるべき組織に当接するようにハウジング組織面16が延在している。カートリッジアセンブリ10はステープルポケット13内に配置された複数の組織固定具すなわちステープル15をさらに収容している。ステープル15は間隔を置いて配置された少なくとも2列のステープル列50として配列されている。図2は6列のステープル列50を示している。ステープル列50はステープル列の近位の端部52で始まりステープル列の遠位の端部54で終わっている。
図3はカートリッジアセンブリ10のカム面12を明示するための断面を示す図である。断面はカートリッジアセンブリ10内のスロット32とカートリッジアセンブリ10の一部であるかまたは器具(リニアカッター)自体の中に配置された切断用具すなわちナイフ18をも明示している。カム面12はカートリッジアセンブリ10の近位の部分からカートリッジアセンブリ10の中央部分まで延在している。カム面12はカム面の近位の部分14、上り傾斜部分20、中央カム部分24、および下り傾斜部分22を有する。カム面の近位の部分14は組織面16から十分な間隔だけ離れていてナイフ18がカートリッジアセンブリ10の近位の部分内に配置されているときにナイフ18は隠されていて組織面16に隣接するいずれの組織に対しても露出されないようになっている。カム面の近位の部分20の遠位の側では、上り傾斜部分20が遠位の向きにゆくほど組織面16に近づくように傾斜して延在していている。カートリッジアセンブリ10の中央部分の近くでは、上り傾斜部分20は組織面16に最も接近した点に到達する。中央カム部分24は上り傾斜部分20から下り傾斜部分22まで遠位の向きに続いている。カートリッジアセンブリ10の遠位の端部の近くでは、下り傾斜部分22は遠位の向きにゆくほど組織面16から離れるように傾斜して延在している。下り傾斜部分22は中央カム部分24に比べて組織面16のより近くから始まり、カム面12のその他の部分から分離されている。カム面12はナイフ18を組織面16および組織面16に隣接する任意の組織に近づけそして組織面16および組織面16に隣接する任意の組織から遠ざけるように案内して動かすための軌道を形成する。カム面12はカートリッジアセンブリ10内に形成されていてよい。
図3はナイフ18の片方の側面から延出するカムフォロア28をも示している。カムフォロア28はナイフ18が遠位の向きに進むときにカム面28に接触しカム面28に従う。ナイフアクチエータ26がナイフ18を遠位の向きに押す。ナイフアクチエータ26は、例えば、カートリッジアセンブリ10が挿入されるフレーム23(図1)を有する図1に示されているようなリニアカッター11のような任意の内視鏡的リニアカッターの一部であってよい。ナイフアクチエータおよび器具(リニアカッター)の発射および閉鎖を駆動するための他の手段は当業者によく知られている。それらの例は1997年1月28日に発行された米国特許第5,597,107号に記載されていて、この米国特許第5,597,107号は本明細書で参照文献として引用される。
図4はナイフ18の斜視図である。カムフォロア28に加えて、ナイフ18はナイフ18が撓むようにするためのナイフスロット38を組み込んでいる。ナイフ18の遠位の端部にはナイフエッジ33およびナイフ先端30が設けられている。ナイフエッジ33は組織を切ることができ、ナイフ先端30は組織を突き刺すことができる。ナイフエッジ33はナイフ18の遠位の端部にある角度34に亘って配置されている。
図5は、ナイフ18が上り傾斜部分20と中央カム部分24の交差する部分の近くの点に向けて配置されたカートリッジアセンブリ10を示している。カートリッジアセンブリ10はリニアカッター11内に挿入できる。カートリッジアセンブリ10を挿入して発射トリガ29(図1)を引くとナイフアクチエータ26が前方に移動してナイフ18がスロット32を通って動く。カムフォロア28はカム面12に接触してナイフ18が組織面16にほぼ平行に遠位の向きに進むときにナイフ18を組織面16に向かうようにそして組織面16から離れるように動かす。カムフォロア28は最初にカム面の近位の部分14に接触する。カムフォロア28がカム面の近位の部分14に接触している間は、ナイフ18は組織面16から離れていて組織を切断しない。ナイフ18が遠位の向きに進むと、カムフォロア28は上り傾斜部分20に接触し、それによってナイフ18が組織面16に向けて動かされる。ナイフ18の遠位の部分は柔軟な部分すなわちナイフスロット38のところで組織面16に向けて撓み、ナイフ18の近位の部分はナイフアクチエータ26と軸線方向に沿って整合したままに留まる。ナイフ先端30が組織面16から露出されると、ナイフ先端30は組織面16に隣接する組織を突き刺し切断を開始する。ナイフエッジ33はある角度34に亘って配置されているので、組織に最も近いナイフエッジ34のある角度34だけ曲げられた部分はナイフ18が組織に向けて移動するときに組織に向かい合って組織を切る。カムフォロア28が中央カム部分24に到達するとナイフ18は組織面16に向けて移動するのを終える。ナイフスロット38はナイフ18が図7に示された位置へ撓むことができるように設計されている。ナイフ18は遠位の向きに進みながら組織面16と当接する組織の切断を続ける。ナイフ18は組織面16と平行な向きで組織を切断する。ナイフ18は下り傾斜部分22に到達するまで組織面16と平行に前進する。下り傾斜部分22はカムフォロア28と接触してナイフ18を組織面16から離れるように動かし、ナイフ18を図8に示された位置に配置する。ナイフ18は組織から離れるように動いて切断を終える。ナイフ18は組織面16に当接する組織から隠される。次にリニアカッター11の機構がナイフアクチエータ26を後退させる。カートリッジアセンブリ10の構造は切断線をカートリッジアセンブリ10の近位の端部まで延びないようにできる。カートリッジアセンブリ10の構造はナイフ18がステープル列の近位の端部52とステープル列の遠位の端部54(図2)との間のみでハウジング組織面16から現れるようにすることができる。カートリッジアセンブリ10をリニアカッター11で用いることによって、リニアカッター11は近位の向きに組織の近位の部分まで延びない切断線を組織面16に当接する組織に形成することができる。ナイフ18はステープル列の近位の端部52とステープル列の遠位の端部54の間のみを切る。
図9および図10は体の2つの内腔の側側吻合術を示している。2つの内腔の側側吻合術では、外科医はカートリッジアセンブリ10およびアンビル21を装備したリニアカッター11を用いることができる。図9は外科医が各内腔にひとつづつ2つの小さな開口17を形成してリニアカッター11のアンビル21を第1の内腔に挿入し、リニアカッター11のカートリッジアセンブリ10を第2の内腔に挿入した様子を示している。アンビル21をカートリッジアセンブリ10に向けて閉じることによって、各内腔の壁の一部が組織面16に隣接する平面上で圧縮される。開口17の周縁部のうちアンビル21とカートリッジアセンブリ10の間に挟まれた部分が近位の組織端部31になる。次に外科医はリニアカッター11を発射してナイフ18を組織面16および圧縮された組織の平面にほぼ平行に動かすことによってアンビル21とカートリッジアセンブリ10の間に挟まれた組織に切断線および通路36を形成することができる。ナイフ18は近位の組織端部31から離れた点から切断線を開始し、ステープル列の近位の端部52とステープル列の遠位の端部54の間のみを切断する。ステープル列の近位の端部52から離れた組織の部分は切断されないまま残される。外科医は通路36を形成する手術を完了するために2つの小さな開口17のみを縫合することを必要とする。
図10は結果的に形成された通路36を示している。リニアカッター11は、一方の内腔の壁をもう一方の内腔の壁に接着し、流れを調節し、内腔内の内容物が内腔の外に漏れ出すのを防止するために、切断線に隣接した組織内にステープル15を挿入し終わっている。ある間隔の切断されていない組織35が開口17と切断線の始まりとの間の内腔の壁に存在している。縫合またはステープルが開口17を閉じるために用いられてよい。飲食物の流動体または栄養物のような物体が通路36を通過してよい。吻合術が血管吻合術の場合には血液が通路36を通過してよい。
等価な構造が本明細書で例示され記載された構造に代わって用いられてもよいことおよび本発明の記載された実施の形態は特許請求の範囲に記載された発明を実施するために用いられる唯一の構造ではないことが認識される。特許請求の範囲に記載された発明を実施するために用いられる等価な構造の一例として、リニアカッター11はカートリッジアセンブリ10が取り付けられるフレーム23を有する直視下手術または内視鏡的手術に有益な任意のリニアカッターでよい。リニアカッター11は無線周波数エネルギー供給機またはレーザーエネルギー供給機のような組織を接着するための別の用具をさらに含んでいてもよい。等価な構造の別の例として、ナイフ18はその周縁部に沿ったエッジを備えたディスクのような任意の切断用具であってよい。ディスクは、組織面16に実質的に平行に遠位の向きに進められながら組織面16に向けて動かされそして組織面16から離れるように動かされてよい。本発明を実施するために用いられる等価な方法の別の例として、2つの内腔を結合する方法が胃、小腸、尿管、または血管のような多くのタイプの体内の内腔を結合するのに有益に用いられる。そのような方法は胃バイパス術でよく行なわれるように小腸を小腸に結合するのに、または小腸を胃に結合するのに有益である。
組織面に実質的に平行に切断する別の方法は、切断エッジが切断の近位の端部が開始されるべき領域で組織に向かい合うようにナイフを回動させることであってよい。ナイフは例えば組織面の下のカートリッジのスロット内に置かれるような形状を有していてよい。ナイフの形状は切断エッジがより長く、したがってナイフが回動したときに切断エッジが組織と向かい合うようにカートリッジの組織面の上に延びるようにより背の高い形状であってよい。ピンなどの回動点が、組織の近位の端部を切断することが望まれる箇所でナイフスロット内に配置されてよい。押し出しアームがナイフを遠位の向きに押し、ピンがナイフが遠位の向きに動くのを妨害する。このときナイフは組織の表面の下に配置された配置から切断エッジが組織に向かい合う第2の配置へ回動される。押し出しアームは回動点すなわちピンから離れた点でナイフと係合する。押し出しアームによって加えられる力および押し出しピンによる反作用的な力が、2つの点が距離的に離れているので、ナイフを回動させるモーメントを生み出す。回動した後に、ナイフは切断エッジが組織に向かい合いながら遠位の向きに移動して組織を切断し切開を形成する。
本明細書で本発明の好ましい実施の形態が示され説明されたが、そのような実施の形態は例示のためのみに提供されたことが当業者には明らかであろう。さまざまな変形、変更、および置き換えが本発明を逸脱することなく当業者には今や思い浮かぶであろう。例えば、当業者には明らかであるように、本明細書の開示内容はロボット支援の手術にも同様に用いられる。加えて、上述された全ての構造は機能を有しそれらの構造はその機能を実施するための手段と呼ぶことができる。したがって、本発明は特許請求の範囲の真髄および範囲によってのみ限定されることが意図されている。
この発明の具体的な実施態様は以下の通りである。
(1)切断用具を近位の組織端部から離れた点から始まる切断線に沿って案内できる上記第1の長寸のフォーク内の軌道をさらに有する、請求項1記載の器具。
(2)軌道が切断用具を組織係合面に向けて動かして上記切断用具を露出させる上り部分を有する、請求項1記載の器具。
(3)軌道が切断器具を組織係合面から離れるように動かして上記切断用具を隠す下り部分をさらに有する、上記実施態様(2)記載の器具。
(4)切断用具が柔軟な部分をさらに有し、上記柔軟な部分が曲がることによって上記切断用具の第1の部分が軌道に従うようにされる、請求項1記載の器具。
(5)切断用具が上記切断用具が露出されたときに組織係合面にほぼ垂直に突出する穿通先端をさらに有する、請求項1記載の器具。
(6)切断用具が上記切断用具の遠位の端部に沿って角度をなす切断面をさらに有する、上記実施態様(5)記載の器具。
(7)切断用具を駆動するための機構が、切断用具を組織係合面に向けて動かしそして上記組織係合面から離れるように動かすための軌道を有する、請求項2記載の器具。
(8)切断用具を駆動するための機構が、切断用具を組織係合面に向けて動かしそして上記組織係合面から離れるように動かすための軌道を有する、請求項2記載の器具。
(9)切断用具、軌道、および組織固定具が、器具から取り外し可能な自蔵式カートリッジ内に配置されている、請求項2記載の器具。
(10)切断用具が柔軟な部分をさらに有し、上記柔軟な部分が曲がることによって上記切断用具の第1の部分が軌道に従うようにされる、請求項2記載の器具。
(11)切断用具が上記切断用具が露出されたときに組織係合面にほぼ垂直に突出する穿通先端をさらに有する、請求項2記載の器具。
(12)切断用具が上記切断用具の遠位の端部に沿って角度をなす切断面をさらに有する、上記実施態様(11)記載の器具。
(13)ハウジング内の複数のステープルをさらに有する、請求項3記載の器具。
(14)軌道が切断用具を組織面から離れるように動かして上記切断用具を隠す下り部分をさらに有する、請求項3記載の器具。
(15)切断用具の表面に配置されていて軌道に沿って移動可能なカムフォロアをさらに有する、請求項3記載の器具。
(16)切断用具が器具を通って動くナイフアクチエータによって遠位の向きに動かされ、
上記切断用具が柔軟な部分を有し、上記柔軟な部分が上記切断用具の第1の部分が上記切断用具のその他の部分が上記ナイフアクチエータと軸線方向で整合しながら上記軌道に従うようにする、請求項3記載の器具。
(17)切断用具が上記切断用具が組織面に向けて動かされるときに組織を突き刺すように配置されている穿通先端を有する、請求項3記載の器具。
(18)切断用具が上記切断用具の遠位の端部に沿って角度をなすように配置された切断エッジを有する、請求項3記載の器具。
本発明は腸および胃のような頑健な組織を切断して吻合を行なうことに用いることができる。
本発明のある実施の形態に基づくカートリッジアセンブリを有する手術用カッターの斜視図である。 本発明のある実施の形態に基づくカートリッジアセンブリの斜視図である。 図2の線2−2に沿った断面を示す斜視図である。 図2のカートリッジアセンブリで用いられる切断用具の斜視図である。 切断用具がカートリッジアセンブリ内の近位の位置に配置された図2の線2−2に沿った側断面図である。 切断用具がカートリッジアセンブリの上り傾斜部に沿って遠位の向きに動かされている図2の線2−2に沿った側断面図である。 切断用具がカートリッジアセンブリの中央カム部に沿って遠位の向きに動かされている図2の線2−2に沿った側断面図である。 切断用具がカートリッジアセンブリの下り傾斜部に沿って遠位の向きに動かされている図2の線2−2に沿った側断面図である。 側側吻合術を開始するために2つの内腔内に挿入された内視鏡的リニアカッターで使用されている図2のカートリッジアセンブリを示す模式図である。 図2のカートリッジアセンブリを用いたリニアカッターによって形成された通路を示すために一方の内腔の一部が切り欠きされた側側吻合術を示す模式図である。
符号の説明
10 カートリッジアセンブリ
11 リニアカッター
12 カム面
13 ステープルポケット
14 近位の部分
15 ステープル
16 ハウジング組織面
17 小さな開口
18 切断用具
20 上り傾斜部分
21 アンビル
22 下り傾斜部分
23 フレーム
24 中央カム部分
25 ハウジング
26 ナイフアクチエータ
27 閉鎖トリガ
28 カムフォロア
29 発射トリガ
30 ナイフ先端
31 近位の組織端部
32 スロット
33 ナイフエッジ
34 角度
35 切断されていない組織
36 通路
38 ナイフスロット
40 シャフト
42 シャフトの近位の端部
44 シャフトの遠位の端部
46 長手方向の軸
48 アンビル組織面
50 ステープル列
52 ステープル列の近位の端部
54 ステープル列の遠位の端部

Claims (3)

  1. 組織の2つの層の間に吻合を形成するための器具であって、
    (a)近位の端部および遠位の端部を有するシャフトおよび上記シャフトの上記遠位の端部に取り付けられたエンドエフェクタであって、上記エンドエフェクタは近位の端部と、遠位の端部と、上記近位の端部および上記遠位の端部の間の長手方向の軸とを備えた第1の長寸のフォークおよび第2の長寸のフォークを有し、上記第1の長寸のフォークは第1の組織係合面を有し、上記第2の長寸のフォークは第2の組織係合面を有し、上記エンドエフェクタは、上記第1および第2の長寸のフォークの少なくとも上記遠位の端部が互いに離れて配置されている開いた位置と、上記第1および第2の組織係合面が密接に隣接する閉じた位置と有し、上記エンドエフェクタは少なくとも2つの間隔を置いて配置された組織固定具の列を上記長手方向の軸に実質的に平行に組織に取り付ける手段をさらに含む、上記シャフトおよびエンドエフェクタと、
    (b)上記少なくとも2つの間隔を置いて配置された組織固定具の列の間を上記第1および第2の長寸のフォークの上記長手方向の軸とほぼ平行な方向に移動可能な切断用具と、
    (c)上記切断用具が上記組織固定具の列の近位の端部および遠位の端部の間のみを切るように上記切断用具を駆動するための手段と
    を有する、吻合を形成するための器具。
  2. 組織の2つの層の間に吻合を形成するための器具であって、
    (a)近位の端部および遠位の端部を有するシャフトおよび上記シャフトの上記遠位の端部に取り付けられたエンドエフェクタであって、上記エンドエフェクタは近位の端部と、遠位の端部と、上記近位の端部および上記遠位の端部の間の長手方向の軸とを備えた2つの長寸のフォークを有し、上記長寸のフォークの各々は組織係合面を有し、上記エンドエフェクタは、上記長寸のフォークの少なくとも上記遠位の端部が互いに離れて配置されている開いた位置と、上記組織係合面が密接に隣接する閉じた位置と有し、上記エンドエフェクタは少なくとも2つの間隔を置いて配置された組織固定具の列を上記長手方向の軸に実質的に平行に組織に取り付ける手段をさらに含む、上記シャフトおよびエンドエフェクタと、
    (b)上記少なくとも2つの間隔を置いて配置された組織固定具の列の間を上記2つの長寸のフォークの上記長手方向の軸とほぼ平行な方向に移動可能な切断用具と、
    (c)上記切断用具が上記組織固定具の列の近位の端部および遠位の端部の間のみを切るように上記切断用具を駆動するための機構と
    を有する、吻合を形成するための器具。
  3. 手術用カッターに取り付け可能で切断されるべき組織に隣接して配置可能な器具であって、
    (a)組織面を有するハウジングと、
    (b)上記ハウジング内に配置されていて上記組織面にほぼ平行な方向に移動可能な切断用具と、
    (c)上記切断用具に隣接して配置されていて、上記切断用具を上記組織面に向けて動かして上記切断用具を露出させる上りカム部分を有する軌道と
    を有する、手術用カッターに取り付け可能で切断されるべき組織に隣接して配置可能な器具。
JP2004109203A 2003-04-02 2004-04-01 組織の2つの層の間に吻合を形成するための器具、および手術用カッターに取り付け可能で切断されるべき組織に隣接して配置可能な器具 Expired - Fee Related JP4672276B2 (ja)

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EP1464287B1 (en) 2009-12-30
ATE453365T1 (de) 2010-01-15
DE602004024843D1 (de) 2010-02-11
MXPA04003214A (es) 2004-11-29
AU2011200484A1 (en) 2011-02-24
EP1464287A2 (en) 2004-10-06
US20040199181A1 (en) 2004-10-07
JP4672276B2 (ja) 2011-04-20
EP1464287A3 (en) 2004-12-01
AU2004201380A1 (en) 2004-10-21

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