JP2001029349A - Biopsy forceps with needle for endoscope - Google Patents
Biopsy forceps with needle for endoscopeInfo
- Publication number
- JP2001029349A JP2001029349A JP11208817A JP20881799A JP2001029349A JP 2001029349 A JP2001029349 A JP 2001029349A JP 11208817 A JP11208817 A JP 11208817A JP 20881799 A JP20881799 A JP 20881799A JP 2001029349 A JP2001029349 A JP 2001029349A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- forceps
- pair
- mucous membrane
- cups
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、内視鏡の鉗子チ
ャンネルに挿通されて体腔内から生検組織標本を採取す
るために用いられる内視鏡用針付生検鉗子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biopsy forceps with a needle for an endoscope which is inserted into a forceps channel of an endoscope and used to collect a biopsy tissue specimen from a body cavity.
【０００２】[0002]
【従来の技術】内視鏡用生検鉗子は一般に、内視鏡の鉗
子チャンネルに挿脱されるシース内に挿通配置された操
作ワイヤを軸線方向に進退操作することによって、シー
スの先端に配置された一対の鉗子カップを嘴状に開閉駆
動するようになっている。2. Description of the Related Art Generally, a biopsy forceps for an endoscope is disposed at a distal end of a sheath by operating an operation wire inserted through a sheath inserted into and removed from a forceps channel of the endoscope in an axial direction. The pair of forceps cups is driven to open and close in a beak shape.
【０００３】そして針付きの生検鉗子の場合には、組織
標本を採取するために鉗子カップを閉じる際に、鉗子カ
ップが粘膜面で滑って標本を採取し損なわないようにす
るために、後方から前方に向かって一対の鉗子カップ内
の中央部分に突出する針が設けられている。[0003] In the case of a biopsy forceps with a needle, when the forceps cup is closed to collect a tissue sample, the forceps cup slides on the mucosal surface so as not to fail to collect the sample. A needle is provided that projects forward from the center of the pair of forceps cups.
【０００４】[0004]
【発明が解決しようとする課題】図７は、そのような従
来の内視鏡用針付生検鉗子によって粘膜面から組織標本
を採取する状態を示しており、鉗子カップ９１を開き、
針９２を粘膜１００に突き刺した状態で鉗子カップ９１
を粘膜１００に押し付けながら閉じることにより、粘膜
１００から切り取られた組織標本が鉗子カップ９１内に
採取される。FIG. 7 shows a state in which a tissue specimen is collected from a mucosal surface by using such a conventional biopsy forceps with a needle for an endoscope. The forceps cup 91 is opened.
With the needle 92 pierced into the mucous membrane 100, the forceps cup 91
The tissue sample cut from the mucous membrane 100 is collected in the forceps cup 91 by closing the same while pressing the same against the mucous membrane 100.
【０００５】そのような採取動作中に鉗子カップ９１を
閉じる際には、鉗子カップ９１が粘膜１００の表面から
浮き上がってしまわないように、鉗子カップ９１を粘膜
１００に押し付けながら閉じる必要がある。When the forceps cup 91 is closed during such a sampling operation, it is necessary to close the forceps cup 91 while pressing the forceps cup 91 against the mucous membrane 100 so that the forceps cup 91 does not rise from the surface of the mucous membrane 100.
【０００６】すると、鉗子カップ９１がその容積以上の
組織を食いちぎろうとする状態になるので、動作抵抗が
大きくて切れ味が悪く、また組織が鉗子カップ９１の外
部にはみ出して所望の位置の組織を採取できない場合が
ある。[0006] Then, the forceps cup 91 is in a state of trying to cut through the tissue larger than the volume, so that the operating resistance is large and the sharpness is poor, and the tissue protrudes outside the forceps cup 91 to remove the tissue at a desired position. In some cases, it cannot be collected.
【０００７】また、鉗子カップ９１が粘膜１００に深く
食い込むので、出血が多くなると共に、図８に示される
ように組織標本が切り取られた粘膜１００の残り部分が
非常に薄くなって、穿孔を起こし易くなる場合がある。Further, since the forceps cup 91 digs deeply into the mucous membrane 100, bleeding increases, and as shown in FIG. 8, the remaining portion of the mucous membrane 100 from which the tissue specimen has been cut becomes very thin, causing perforation. May be easier.
【０００８】そこで本発明は、粘膜の組織標本を、狙っ
たとおりの正しい位置の適度の深さから採取することが
できる内視鏡用針付生検鉗子を提供することを目的とす
る。Accordingly, an object of the present invention is to provide a biopsy forceps with a needle for an endoscope which can collect a tissue sample of a mucous membrane from an appropriate depth at an intended position.
【０００９】[0009]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の内視鏡用針付生検鉗子は、シース内に挿通
配置された操作ワイヤを軸線方向に進退操作することに
よって嘴状に開閉駆動される一対の鉗子カップがシース
の先端に配置されると共に、後方から前方に向かって一
対の鉗子カップ内に突出する針が設けられた内視鏡用針
付生検鉗子において、斜め後方に向かって突出する刺状
部を針の先端近傍に突設したものである。In order to achieve the above object, a biopsy forceps with a needle for an endoscope according to the present invention is provided with a beak by operating an operating wire inserted in a sheath in an axial direction. In a biopsy forceps with a needle for an endoscope provided with a pair of forceps cups that are driven to open and close in a manner arranged at the distal end of the sheath and provided with a needle projecting from the rear toward the front into the pair of forceps cups, A barbed portion projecting obliquely rearward is provided near the tip of the needle.
【００１０】なお、刺状部は少なくとも一つあればよ
く、対称に一対配置されていてもよく、位置をずらせて
複数配置されていてもよい。[0010] It is sufficient that at least one barbed portion is provided, and a pair may be symmetrically disposed, or a plurality of barbs may be disposed with their positions shifted.
【００１１】[0011]
【発明の実施の形態】図面を参照して本発明の実施の形
態を説明する。図３は、本発明の実施の形態の内視鏡用
針付生検鉗子の全体構成を示しており、図示されていな
い内視鏡の鉗子チャンネルに挿脱される可撓性のシース
１の内部には、軸線方向に進退自在に操作ワイヤ２が全
長にわたって挿通配置されている。Embodiments of the present invention will be described with reference to the drawings. FIG. 3 shows an entire configuration of a biopsy forceps with a needle for an endoscope according to an embodiment of the present invention, and a flexible sheath 1 inserted into and removed from a forceps channel of an endoscope (not shown). Inside, an operation wire 2 is inserted and arranged over the entire length so as to be able to advance and retreat in the axial direction.
【００１２】シース１の基端（手元側）には、操作ワイ
ヤ２を進退操作させるための操作部４が連結されてお
り、シース１の先端には、操作ワイヤ２によって駆動さ
れる先端作動部３が連結されている。An operation section 4 for moving the operation wire 2 forward and backward is connected to a proximal end (hand side) of the sheath 1, and a distal end operation section driven by the operation wire 2 is connected to a distal end of the sheath 1. 3 are connected.
【００１３】図１は、本発明の実施の形態の内視鏡用針
付生検鉗子の先端部分を示している。シース１は、例え
ばステンレス鋼線材を一定の径で巻いた密着巻きコイル
パイプによって形成されている。FIG. 1 shows a distal end portion of a biopsy forceps with a needle for an endoscope according to an embodiment of the present invention. The sheath 1 is formed of, for example, a tightly wound coil pipe in which a stainless steel wire is wound with a constant diameter.
【００１４】シース１の先端に連結固定された先端本体
３３には、長手方向にスリット３４が形成されていて、
その前端近傍に差し渡された状態に固設された支軸３５
に、一対の鉗子カップ３１が嘴状に開閉するように回動
自在に軸支されている。A slit 34 is formed in the distal end main body 33 fixedly connected to the distal end of the sheath 1 in the longitudinal direction.
A support shaft 35 fixed in a state of being extended near the front end thereof
In addition, a pair of forceps cups 31 are rotatably supported so as to open and close like a beak.
【００１５】スリット３４内には、鉗子カップ３１を開
閉作動させるために操作ワイヤ２によって駆動される公
知のリンク機構３６が配置されている。このリンク機構
３６は、四つのリンクを互いに回動自在に環状に連結し
たいわゆるパンタグラフ状に形成されており、そのうち
の先側の二つのリンクは、一対の鉗子カップ３１に一体
に連続して形成されていて、支軸３５を中心に回動す
る。A known link mechanism 36 driven by the operation wire 2 for opening and closing the forceps cup 31 is disposed in the slit 34. The link mechanism 36 is formed in a so-called pantograph shape in which four links are rotatably connected to each other in a ring shape, and two links on the leading side are integrally formed continuously with a pair of forceps cups 31. And rotates about the support shaft 35.
【００１６】リンク機構３６の後端に連結された駆動ロ
ッド３７には、操作ワイヤ２の先端が連結固着されてお
り、シース１の手元側からの遠隔操作によってリンク機
構３６を動作させ、操作ワイヤ２を先側へ押し込めば一
対の鉗子カップ３１が開き、操作ワイヤ２を手元側へ牽
引すれば鉗子カップ３１が二点鎖線で示されるように閉
じる。A drive rod 37 connected to the rear end of the link mechanism 36 has a distal end of the operation wire 2 connected and fixed thereto. The link mechanism 36 is operated by remote operation from the proximal side of the sheath 1 to operate the operation wire 2. 2 is pushed toward the front side, a pair of forceps cups 31 is opened, and if the operation wire 2 is pulled toward the hand side, the forceps cup 31 is closed as indicated by a two-dot chain line.
【００１７】先端本体３３の先端部分から前方に向かっ
て、一対の鉗子カップ３１内に突出する針３２が設けら
れている。針３２は先端本体３３及び一対の鉗子カップ
３１の中心軸線位置に配置されている。A needle 32 is provided which protrudes into the pair of forceps cups 31 from the distal end of the distal end body 33 toward the front. The needle 32 is disposed at the center axis position of the distal end main body 33 and the pair of forceps cups 31.
【００１８】針３２は、図２の部分平面断面図にも示さ
れるように、基端部側に形成された孔に支軸３５が通さ
れて支持されており、側方に曲げて形成された腕部３２
ａの端部が、先端本体３３に形成された孔３３ａにかし
め固定されて回転止めになっている。As shown in the partial plan sectional view of FIG. 2, the needle 32 is supported by passing a support shaft 35 through a hole formed on the base end side, and is formed by bending laterally. Arm 32
The end of “a” is caulked and fixed to a hole 33 a formed in the tip main body 33 to prevent rotation.
【００１９】図１に戻って、針３２の先端は一対の鉗子
カップ３１が閉じた状態では鉗子カップ３１内に納まる
長さに設定されており、針３２の先端近傍には、斜め後
方に向かって突出する一対の刺状部３２ｂが１８０°対
称の位置に突設されている。Returning to FIG. 1, the distal end of the needle 32 is set to have a length that fits inside the forceps cup 31 when the pair of forceps cups 31 is closed. A pair of barbed portions 32b that protrude are provided at 180 ° symmetrical positions.
【００２０】上述のように構成された内視鏡用針付生検
鉗子によって粘膜面から組織標本を採取する際には、鉗
子カップ３１を開いて針３２を粘膜１００に突き刺した
ら、従来とは逆に、そのまま内視鏡用針付生検鉗子を手
元側に引き戻すように操作する。When a tissue specimen is collected from the mucosal surface with the biopsy forceps with a needle for an endoscope configured as described above, the forceps cup 31 is opened and the needle 32 is pierced into the mucous membrane 100. Conversely, the operation is performed such that the biopsy forceps with the needle for the endoscope is pulled back toward the user.
【００２１】すると、図４に示されるように、針３２か
ら突設された刺状部３２ｂによって粘膜１００が引っ張
り上げられ、このように粘膜１００が引き伸ばされた状
態で鉗子カップ３１を閉じることにより、粘膜１００の
表面寄りの組織標本を適量採取することができ、鉗子カ
ップ３１を閉じる際の切れ味もよい。Then, as shown in FIG. 4, the mucous membrane 100 is pulled up by the piercing portion 32b protruding from the needle 32, and the forceps cup 31 is closed while the mucous membrane 100 is stretched in this manner. In addition, an appropriate amount of a tissue specimen near the surface of the mucous membrane 100 can be collected, and the sharpness when closing the forceps cup 31 is good.
【００２２】また、標本採取の位置も見当がつけ易くて
安全であり、図５に示されるように、組織標本が切り取
られた粘膜１００の残り部分が適当な厚みを有し、出血
が少なくて穿孔の心配もない。Further, the position of the sample is easy to find and safe, and as shown in FIG. 5, the remaining portion of the mucous membrane 100 from which the tissue sample has been cut has an appropriate thickness, and there is little bleeding. There is no worry about perforation.
【００２３】なお、本発明は上記実施の形態に限定され
るものではなく、例えば刺状部３２ｂは、図６の（Ａ）
に示されるように、位置をずらせて一対（又はそれ以
上）配置されていてもよく、（Ｂ）に示されるように刺
状部３２ｂは少なくとも一個あればよく、（Ｃ）に示さ
れるように、板材により形成された針３２の一部を折り
曲げて刺状部３２ｂを形成してもよい。The present invention is not limited to the above-described embodiment. For example, the barbed portion 32b may be formed as shown in FIG.
, A pair (or more) may be arranged with their positions shifted, as shown in (B), at least one barbed portion 32b may be provided, and as shown in (C), Alternatively, a part of the needle 32 formed of a plate material may be bent to form the barbed portion 32b.
【００２４】[0024]
【発明の効果】本発明によれば、斜め後方に向かって突
出する刺状部を針の先端近傍に突設したので、粘膜面か
ら組織標本を採取する際には、鉗子カップを開いて針を
粘膜に突き刺し、そのまま生検鉗子を手元側に引き戻す
ように操作することにより、針から突設された刺状部に
よって粘膜が引っ張り上げられ、その状態で鉗子カップ
を閉じれば粘膜の表面寄りの組織標本を切れ味よく適量
採取することができる。そして、標本採取の位置も見当
がつけ易くて安全であり、組織標本が切り取られた粘膜
の残り部分が適当な厚みを有し、出血が少なくて穿孔の
心配もない。According to the present invention, the barb projecting obliquely rearward is provided in the vicinity of the tip of the needle. Therefore, when collecting a tissue sample from the mucosal surface, the forceps cup is opened and the needle is opened. By piercing the mucous membrane and pulling the biopsy forceps back to the proximal side, the mucous membrane is pulled up by the piercing part protruding from the needle. An appropriate amount of a tissue specimen can be sharply collected. The location of the sample is easy to find and safe, and the remaining portion of the mucous membrane from which the tissue sample has been cut has an appropriate thickness, so that there is little bleeding and there is no fear of perforation.
【図１】本発明の実施の形態の内視鏡用針付生検鉗子の
先端部分の側面断面図である。FIG. 1 is a side sectional view of a distal end portion of a biopsy forceps with a needle for an endoscope according to an embodiment of the present invention.
【図２】本発明の実施の形態の内視鏡用針付生検鉗子の
先端部分の部分平面断面図である。FIG. 2 is a partial plan sectional view of a distal end portion of the biopsy forceps with a needle for an endoscope according to the embodiment of the present invention.
【図３】本発明の実施の形態の内視鏡用針付生検鉗子の
全体構成を示す側面図である。FIG. 3 is a side view showing the overall configuration of the biopsy forceps with a needle for an endoscope according to the embodiment of the present invention.
【図４】本発明の実施の形態の内視鏡用針付生検鉗子の
使用状態の先端部分の側面図である。FIG. 4 is a side view of a distal end portion of the use of the biopsy forceps with a needle for an endoscope according to the embodiment of the present invention.
【図５】本発明の実施の形態の内視鏡用針付生検鉗子に
よって組織標本が採取された後の粘膜の状態を示す側面
断面図である。FIG. 5 is a side cross-sectional view showing a state of a mucous membrane after a tissue sample has been collected by the biopsy forceps with a needle for an endoscope according to the embodiment of the present invention.
【図６】本発明の実施の形態の内視鏡用針付生検鉗子の
針の複数の変形例を示す部品図である。FIG. 6 is a component diagram showing a plurality of modified examples of the needle of the biopsy forceps with a needle for an endoscope according to the embodiment of the present invention.
【図７】従来の内視鏡用針付生検鉗子の使用状態の先端
部分の側面図である。FIG. 7 is a side view of a distal end portion of a conventional biopsy forceps with a needle for an endoscope in use.
【図８】従来の内視鏡用針付生検鉗子によって組織標本
が採取された後の粘膜の状態を示す側面断面図である。FIG. 8 is a side sectional view showing a state of a mucous membrane after a tissue sample is collected by a conventional biopsy forceps with a needle for an endoscope.
１ シース ２ 操作ワイヤ ３１ 鉗子カップ ３２ 針 ３２ｂ 刺状部 Reference Signs List 1 sheath 2 operation wire 31 forceps cup 32 needle 32b stab
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西村 幸 長野県岡谷市川岸中２−18−31 有限会社 リバー精工内 Ｆターム(参考） 4C061 AA00 BB00 CC00 DD00 GG15 HH21 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Sachi Nishimura 2-18-31 Kawagishinaka, Okaya-shi, Nagano F-term in River Seiko Co., Ltd. 4C061 AA00 BB00 CC00 DD00 GG15 HH21
Claims (3)
線方向に進退操作することによって嘴状に開閉駆動され
る一対の鉗子カップが上記シースの先端に配置されると
共に、後方から前方に向かって上記一対の鉗子カップ内
に突出する針が設けられた内視鏡用針付生検鉗子におい
て、 斜め後方に向かって突出する刺状部を上記針の先端近傍
に突設したことを特徴とする内視鏡用針付生検鉗子。A pair of forceps cups, which are opened and closed in a beak-like manner by operating an operation wire inserted and arranged in a sheath in an axial direction, are arranged at the distal end of the sheath, and are directed from the rear to the front. In a biopsy forceps with a needle for an endoscope provided with a needle projecting into the pair of forceps cups, a barbed portion projecting obliquely rearward is protruded near the tip of the needle. Biopsy forceps with a needle for an endoscope.
請求項１記載の内視鏡用針付生検鉗子。2. The biopsy forceps with a needle for an endoscope according to claim 1, wherein said pair of stabs are symmetrically arranged.
れている請求項１記載の内視鏡用針付生検鉗子。3. The biopsy forceps with a needle for an endoscope according to claim 1, wherein a plurality of the stab-like portions are arranged at different positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20881799A JP4373536B2 (en) | 1999-07-23 | 1999-07-23 | Endoscopic biopsy forceps with needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20881799A JP4373536B2 (en) | 1999-07-23 | 1999-07-23 | Endoscopic biopsy forceps with needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001029349A true JP2001029349A (en) | 2001-02-06 |
| JP4373536B2 JP4373536B2 (en) | 2009-11-25 |
Family
ID=16562624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20881799A Expired - Fee Related JP4373536B2 (en) | 1999-07-23 | 1999-07-23 | Endoscopic biopsy forceps with needle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4373536B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010100780A1 (en) | 2009-03-05 | 2010-09-10 | オリンパスメディカルシステムズ株式会社 | Biopsy tissue collecting and treating device |
| US8317726B2 (en) | 2005-05-13 | 2012-11-27 | Boston Scientific Scimed, Inc. | Biopsy forceps assemblies |
| US8469993B2 (en) | 2003-06-18 | 2013-06-25 | Boston Scientific Scimed, Inc. | Endoscopic instruments |
| US9681857B2 (en) | 2003-06-18 | 2017-06-20 | Boston Scientific Scimed, Inc. | Endoscopic instruments and methods of manufacture |
| CN107753092A (en) * | 2017-11-30 | 2018-03-06 | 彭翼 | Intracavitary Endarterectomy device |
-
1999
- 1999-07-23 JP JP20881799A patent/JP4373536B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8469993B2 (en) | 2003-06-18 | 2013-06-25 | Boston Scientific Scimed, Inc. | Endoscopic instruments |
| US9681857B2 (en) | 2003-06-18 | 2017-06-20 | Boston Scientific Scimed, Inc. | Endoscopic instruments and methods of manufacture |
| US8317726B2 (en) | 2005-05-13 | 2012-11-27 | Boston Scientific Scimed, Inc. | Biopsy forceps assemblies |
| US8672859B2 (en) | 2005-05-13 | 2014-03-18 | Boston Scientific Scimed, Inc. | Biopsy forceps assemblies |
| WO2010100780A1 (en) | 2009-03-05 | 2010-09-10 | オリンパスメディカルシステムズ株式会社 | Biopsy tissue collecting and treating device |
| US8241227B2 (en) | 2009-03-05 | 2012-08-14 | Olympus Medical Systems Corp. | Biopsy tissue sampling treatment instrument |
| CN107753092A (en) * | 2017-11-30 | 2018-03-06 | 彭翼 | Intracavitary Endarterectomy device |
| CN107753092B (en) * | 2017-11-30 | 2024-01-19 | 彭翼 | Intra-cavity intima stripping device |
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| Publication number | Publication date |
|---|---|
| JP4373536B2 (en) | 2009-11-25 |
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