JP3284504B2 - 外科切除装置 - Google Patents

外科切除装置

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Publication number
JP3284504B2
JP3284504B2 JP32233892A JP32233892A JP3284504B2 JP 3284504 B2 JP3284504 B2 JP 3284504B2 JP 32233892 A JP32233892 A JP 32233892A JP 32233892 A JP32233892 A JP 32233892A JP 3284504 B2 JP3284504 B2 JP 3284504B2
Authority
JP
Japan
Prior art keywords
tissue
tip
tube member
cutting tube
collection chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP32233892A
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English (en)
Other versions
JPH05208021A (ja
Inventor
ディ.ピングルトン エドワード
ジー.トムソン ポール
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cook Inc
Original Assignee
Cook Inc
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Publication date
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Publication of JPH05208021A publication Critical patent/JPH05208021A/ja
Application granted granted Critical
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320016Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B17/32002Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2217/00General characteristics of surgical instruments
    • A61B2217/002Auxiliary appliance
    • A61B2217/005Auxiliary appliance with suction drainage system

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Description

【発明の詳細な説明】
【0001】
【産業上の利用分野】本発明は生物学的組織を除去する
外科切除装置に関する。
【0002】
【従来の技術】本発明は特願平2−19125として出
願した同一出願人にかかる外科切除装置の改良に関する
ものである。従来の外科切除装置の図の先端部は患者の
組織を切除するためのものであり、その切除された組織
が根本部のスクリーンを介して、吸引される構造が示さ
れている。本発明は、この先端部の組織切除装置の改良
および切除された組織の吸引装置の改良に係る。
【0003】
【発明が解決しようとする課題】本発明の目的は、外科
の組織切断用のカッターブレード(組織切除装置)の安
全性の向上と組織吸引用のフィルタと真空ラインの形状
の変更に関する。
【0004】
【課題を解決するための手段】前記課題を解決するため
に、本発明の外科切除装置は、通路412を有する細長
い外部シース409と、前記通路412内で回転可能に
搭載された細長い内部切断チューブ部材401と、前記
内部切断チューブ部材401を前記外部シース409内
で回転駆動する回転駆動機構416と、 ここで、この
内部切断チューブ部材401の先端部の回転により、組
織を切除する回転切断エッジ407を提供し、前記内部
切断チューブ部材401を介して切除された組織を取り
除く組織収集室419と、からなり、前記外部シース4
09の先端部は前記通路412より小さい断面の組織収
集室419を提供し、前記回転切断エッジ407はその
先端部で通路412内に収納されることを特徴とする。
【0005】
【実施例】図1は、外科切除装置400の部分断面図で
ある。この外科切除装置400は組織を切断する回転切
断エッジ407を有している。この回転切断エッジ40
7は、外部シース409の通路412内に完全に収納さ
れている。この通路412はその先端部410の周囲で
環状に閉鎖されて、外科組織バッグが貫通するのを阻止
している。この切断装置400は、外部シース409内
に回転可能に配置された内部切断チューブ部材401を
有している。この内部切断チューブ部材401内に入っ
た組織は、そこに加わる真空による力により、内部切断
チューブ部材401の中空通路404内に引き込まれ
る。そして、外科医がこの装置の先端部を側面方向に動
かすことにより切断される。この回転駆動機構416
は、モータ440を有しており、このモータ440は内
部切断チューブ部材401の根本部403の周囲に配置
されて、内部切断チューブ部材401を回転し、その中
の組織を切断する。真空ライン422が、この装置のハ
ンドル431に接続されて、内部切断チューブ部材40
1の中空通路404内に組織を引き込む。この切断され
た組織は、内部切断チューブ部材401内を通って、真
空ポート418から組織収集室419に入る。この組織
収集室419はハンドル431内に配置されている。組
織収集室419の底部に配置された円錐状スクリーン4
23は切断された組織が組織収集室419内に留まっ
て、真空ライン422が目詰まりするのを防ぐ。真空制
御手段417は止栓425を含み、この止栓425は真
空ポート424と真空ライン422との間に配置され
て、外科切除装置400に加わる真空の程度を制御す
る。
【0006】図1の回転駆動機構416は、前の関連出
願に示された別の駆動機構で置換可能である。同様に、
ハンドルと真空システムも、また前の出願に示されたも
のでも置換可能である。内部切断チューブ部材401
は、先端部402、根本部403とその中に伸びる中空
通路404とを有する。内部切断チューブ部材401の
周囲には外部シース409が配置され、その根本部41
1はカプラ426を介して、ハンドル431に接続され
ている。通路412は先端部410と根本部411との
間の外部シース409内を軸方向に伸びる。
【0007】図2、3に、内部切断チューブ部材401
の先端部402と外部シース409の先端部410の部
分断面図が示されている。その中に組織が収納されてい
る外科組織バッグの貫通を阻止するために、先端部41
0はその周囲を環状に閉じる外部シース409の外部表
面413を有し、先端開口414を形成している。この
先端部410は内部切断チューブ部材401の先端部4
02まで、あるいは、それを超えて伸び、先端開口41
4を除き、先端部402の周囲で部分的に閉じている。
先端部410の環状の閉鎖部は図2、3に示され、部分
的にドーム形状をしている。この先端部410は先端部
402の周囲で部分的に環状で閉じている。
【0008】内部切断チューブ部材401の先端部40
2は、先端部410と同様に部分的に環状に閉じている
のが好ましい。しかし、先端部402は先端部410と
その形状が異なってもよく、しかし、先端開口406が
先端開口414まで伸びる、あるいは、そこから内側に
配置されるという意味において、先端部402は先端部
410で中空通路404内に存在すべきである。
【0009】組織は、外部シース409の先端開口41
4内に引き込まれ、内部切断チューブ部材401の先端
開口406周囲に配置された回転切断エッジ407と噛
み合う。外科医は、先端部402を側面方向の運動、あ
るいは、回転方向の運動をさせて、回転切断エッジ40
7が先端開口406内に引き込まれた組織を切断する。
外科組織バッグの貫通を阻止したり、この装置をより簡
単に動かすために、外部シース409と内部切断チュー
ブ部材401の球状閉鎖表面427と球状閉鎖表面42
8を均一の球状にする。その結果、外部シース409の
先端開口414と内部切断チューブ部材401の先端開
口406は、それぞれ通路412と中空通路404の断
面直径よりも小さな断面直径を有する。さらに内部切断
チューブ部材401の先端開口406は、外部シース4
09の先端開口414内に配置されて、より小さな断面
直径を有し、組織を内部切断チューブ部材401内に引
き込み、回転切断エッジ407と接触させて、外科医に
より側面方向、あるいは円周方向の運動をさせることに
より組織を切断する。回転切断エッジ407の直径は、
先端開口414の直径より小さいのが組織を切断すると
いう点から小さいのは好ましい。しかし、必要ならば、
回転切断エッジ407の直径は先端開口414の直径以
下でもよい。
【0010】以下に具体的な寸法を記述する。中空通路
404は、300シリーズのステンレス製チューブで、
長さが12.38cm(4.785インチ)で、外径が
1.09cm(0.428インチ)、内径が1.04c
m(0.41インチ)である。外部シース409の先端
開口414の直径は、約0.79cm(0.31イン
チ)から0.8cm(0.315インチ)で、球状閉鎖
表面427は、約0.254cm(0.1インチ)の均
一な半径を有する。内部切断チューブ部材401は、3
00シリーズのステンレス製チューブで、その長さは1
9cm(7.5インチ)で、外径が約0.96cm
(0.377インチ)で、壁厚は0.0254cm
(0.01インチ)で、内径は約0.9cm(0.35
7インチ)である。先端開口406の直径は、約0.6
98cm(0.275インチ)で、球状閉鎖表面428
は、約0.254cm(0.1インチ)の均一の半径を
有する。回転切断エッジ407は、約25から30度の
内側角を有し、切断チューブの軸方向に対し、直交する
半径方向で内側に面している。このような形状により、
先端開口406と先端開口414を介して、組織が引き
込まれたときに、横方向の切断を可能とする。図1に部
分的に示したように、内部切断チューブ部材401の根
本部403から約0.96cm(0.375インチ)、
真空ポート418は約2.86cm(1.125イン
チ)伸び、405から0.45cm(0.177イン
チ)の深さ、中空通路404内に入る。カプラ408は
中空通路404内で固定配置されて、内部切断チューブ
部材401の根本部403から伸びて、モータ440の
シャフト441と取り外し可能に競合する。
【0011】図1、2に示したように、内部切断チュー
ブ部材401の上の先端部402の周囲に先端部軸受表
面415が配置され、それは長さで0.5cm、先端部
402から0.5cm離れて配置される。この先端部軸
受表面415は、0.038cm(0.015インチ)
の厚さを有し、95%ハードクロムのような電解処理さ
れた材料で、外部シース409の中空通路404内に内
部切断チューブ部材401を回転可能にする。根本部軸
受表面420は、同様に先端開口406の外部表面の上
に、そして、外部シース409の根本部403周囲に配
置される。先端開口406と外部シース409の先端部
の間の距離は、スラストディスク429により保持され
る。このスラストディスク429は、内部切断チューブ
部材401の周囲、外部シース409の根本部に配置さ
れ、カプラ426と軸受ディスク430と係合する。あ
るいは、図3に示すように、約0.038cm(0.0
15インチ)のPTFE材料製の薄い壁の421が、先
端開口406と外部シース409との間に挿入されて、
これが軸系表面として機能する。
【0012】内部切断チューブ部材401の中空通路4
04は、チューブの長さ全体にわたって伸び、患者から
切断された組織を真空ポート418を介して、組織収集
室419内に引き込む。ハンドル431は、先端部クロ
スバー開口432内に固定配置されたカプラ426を有
する円筒状T型部材である。内部切断チューブ部材40
1は、ハンドル431の根本部クロスバー開口433を
介して、外部シース409内に挿入される。フランジ4
34は、内部切断チューブ部材401の根本部周囲に配
置されて、組織がモータ440内に引き込まれるのを阻
止する。フランジ434は、ハンドル431の通路43
5内に配置され、これはフランジ436と回転駆動機構
416の先端部との間の根本部クロスバー開口433の
周囲である。
【0013】フランジ436の組織収集室419は、フ
ランジ436を有し、このフランジ436は、内部切断
チューブ部材401の中空通路404と真空ポート41
8を介して連通している。組織収集室419は、ハンド
ル431のシリンダ壁437により包囲されている。組
織収集室419の根本部は、キャップ438を有し、こ
れにはその中に配置された真空ポート424とそこから
伸びる止栓425とを有する。円錐状スクリーン423
は、組織が真空ポート424を介して、真空ライン42
2内に引き込まれるのを防止する。真空制御手段417
は、真空ポート424と止栓425と円錐状スクリーン
423とを含む。ハンドル431は、公知のプラスチッ
ク材料製で、簡単にモールド成形される。回転駆動機構
416は、外筒439内に配置される市販のモータ44
0を有し、このモータ440はハンドル431の根本部
クロスバー開口433内に簡単にねじ込まれて、カプラ
408と競合する。
【0014】内部切断チューブ部材401を回転させる
回転駆動機構416でもって、組織は、回転切断エッジ
407により切断されて、中空通路404を貫通して、
真空ポート418を介して組織収集室419内に引き込
まれる。電力制御ライン(図示せず)は、回転駆動機構
416に接続されて、モーターのスピードを制御する。
外科医はこのスピード電力制御ラインに接続されたペダ
ルでもって制御する。組織収集室419に接続された真
空は、切断された組織を内部切断チューブ部材401か
ら引き込み、内部切断チューブ部材401からハンドル
431内の組織収集室419内に引き込む。外科医は組
織収集室419に接続された真空の程度を止栓425を
介して調整できる。
【0015】本発明の切断装置の先端部は鋸状の歯、あ
るいは、変更されたカット端部を有し、異なる切断動
作、あるいはスライス動作を提供することができる。外
部シールドの円形状先端部は一連の丸いワイヤを有し、
軟組織の通過を可能として内部切断部材によりそれを切
断、あるいはスライスすることもできる。このようなワ
イヤケージは、外科組織バッグの破損を防止できる。
【0016】
【発明の効果】以上述べたごとく、本発明の外科切除装
置によれば、安全に患者の組織を切除し、それを効率よ
く組織収集室に収納することができる。
【図面の簡単な説明】
【図1】本発明の一実施例の部分断面図である。
【図2】図1の外科切除装置の先端部の部分断面図であ
る。
【図3】図1の外科切除装置の部分断面斜視図である。
【符号の説明】
400 外科切除装置 401 内部切断チューブ部材 402 先端部 403 根元部 404 中空通路 406 先端開口 407 回転切断エッジ 408 カプラ 409 外部シース 410 先端部 411 根元部 412 通路 413 外部表面 414 先端開口 415 先端部軸受表面 416 回転駆動機構 417 真空制御手段 418 真空ポート 419 組織収集室 420 根元部軸受表面 422 真空ライン 423 円錐状スクリーン 424 真空ポート 425 止栓 426 カプラ 427 球状閉鎖表面 428 球状閉鎖表面 429 スラストディスク 430 軸受ディスク 431 ハンドル 432 先端部クロスバー開口 433 根元部クロスバー開口 435 通路 436 フランジ 437 シリンダ壁 438 キャップ 440 モータ 441 シャフト
───────────────────────────────────────────────────── フロントページの続き (72)発明者 ポール ジー.トムソン アメリカ合衆国 インディアナ プット ナム郡 フィルモア アール.アール. 1 、ボックス 204 (56)参考文献 特開 平1−126957(JP,A) 実開 平1−159824(JP,U) 米国特許4274414(US,A) 米国特許3889657(US,A) 米国特許4649919(US,A) 米国特許5019036(US,A) 米国特許4598710(US,A) 米国特許4517977(US,A) (58)調査した分野(Int.Cl.7,DB名) A61B 17/32

Claims (10)

    (57)【特許請求の範囲】
  1. 【請求項1】 通路(412)を有する細長い外部シー
    ス(409)と、 前記通路(412)内で回転可能に搭載された細長い内
    部切断チューブ部材(401)と、 前記内部切断チューブ部材(401)を前記外部シース
    (409)内で回転駆動させ、この内部切断チューブ部
    材(401)の先端部の回転により、組織を切除する回
    転切断エッジ(407)を提供する回転駆動機構(41
    6)と、 前記内部切断チューブ部材(401)を介して切除され
    た組織を取り除く組織収集室(419)とからなる外科
    切除装置において、 前記通路よりも小さな断面寸法の均一な先端開口(41
    4)を形成するために、前記外部シースの先端部は連続
    的な態様で環状に閉鎖されており、 前記内部切断チューブ部材の回転切断エッジ(407)
    その先端部で通路(412)内に収納されることを特
    徴とする外科切除装置。
  2. 【請求項2】 前記回転切断エッジ(407)は、前記
    先端開口(414)から内側に離間して配置され、 切断部が先端開口(414)の周囲に形成されることを
    特徴とする請求項1の装置。
  3. 【請求項3】 前記回転切断エッジ(407)は、鋸
    状、あるいは連続状の刃であることを特徴とする請求項
    1、または2の装置。
  4. 【請求項4】 外部シース(409)の環状閉鎖部は、
    連続的で均一な半径のカーブで形成され、 内部切断チューブ部材(401)の先端部は、連続で均
    一なカーブで形成されることを特徴とする請求項1、
    2、3の装置。
  5. 【請求項5】 内部切断チューブ部材(401)の先端
    開口(406)は、外部シース(409)の先端開口
    (414)よりも小さい、 ことを特徴とする請求項4の装置。
  6. 【請求項6】 先端部軸受表面(415)と根本部軸受
    表面(420)は、外部シース(409)と内部切断チ
    ューブ部材(401)の間に配置されることを特徴とす
    る請求項1、2、3、4、5の装置。
  7. 【請求項7】 前記先端部軸受表面(415)と根本部
    軸受表面(420)は、内部切断チューブ部材(40
    1)の表面に形成された転回処理した表面であることを
    特徴とする請求項6の装置。
  8. 【請求項8】 前記内部切断チューブ部材(401)
    は、その先端部から離れた場所に真空ポート(418)
    を有し、 前記真空ポート(418)は、真空ライン(422)を
    有する内部切断チューブ部材(401)と連通すること
    を特徴とする請求項1−7の装置。
  9. 【請求項9】 前記組織収集室(419)は、真空ポー
    ト(418)と真空ライン(422)との間に配置さ
    れ、 この組織収集室(419)は、ハンドル(431)内に
    配置されることを特徴とする請求項8の装置。
  10. 【請求項10】 組織収集室(419)内の組織が、真
    空ライン(422)に入るのを阻止するために、組織収
    集室(419)内に円錐状スクリーン(423)を設け
    たことを特徴とする請求項8の装置。
JP32233892A 1991-11-08 1992-11-09 外科切除装置 Expired - Fee Related JP3284504B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/790,583 US5275609A (en) 1990-06-22 1991-11-08 Surgical cutting instrument
US790583 1991-11-08

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Publication Number Publication Date
JPH05208021A JPH05208021A (ja) 1993-08-20
JP3284504B2 true JP3284504B2 (ja) 2002-05-20

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EP (1) EP0541377B1 (ja)
JP (1) JP3284504B2 (ja)
AT (1) ATE125136T1 (ja)
AU (1) AU669677B2 (ja)
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EP0541377A1 (en) 1993-05-12
ATE125136T1 (de) 1995-08-15
AU669677B2 (en) 1996-06-20
US5275609A (en) 1994-01-04
CA2082327C (en) 2003-09-30
EP0541377B1 (en) 1995-07-19
AU2820692A (en) 1993-05-13
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JPH05208021A (ja) 1993-08-20
DE69203571T2 (de) 1996-01-11

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