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JP3650550B2 - Endoscopic biopsy forceps - Google Patents
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JP3650550B2 - Endoscopic biopsy forceps - Google Patents

Endoscopic biopsy forceps Download PDF

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Publication number
JP3650550B2
JP3650550B2 JP25514699A JP25514699A JP3650550B2 JP 3650550 B2 JP3650550 B2 JP 3650550B2 JP 25514699 A JP25514699 A JP 25514699A JP 25514699 A JP25514699 A JP 25514699A JP 3650550 B2 JP3650550 B2 JP 3650550B2
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JP
Japan
Prior art keywords
drive lever
wire
forceps
biopsy forceps
sheath
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
JP25514699A
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Japanese (ja)
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JP2001070309A (en
Inventor
輝雄 大内
勝 長峰
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.)
Nagamine Manufacturing Co Ltd
Original Assignee
Nagamine Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nagamine Manufacturing Co Ltd filed Critical Nagamine Manufacturing Co Ltd
Priority to JP25514699A priority Critical patent/JP3650550B2/en
Priority to US09/654,521 priority patent/US6554850B1/en
Priority to DE10043163A priority patent/DE10043163B4/en
Priority to DK200001311A priority patent/DK200001311A/en
Publication of JP2001070309A publication Critical patent/JP2001070309A/en
Application granted granted Critical
Publication of JP3650550B2 publication Critical patent/JP3650550B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【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生検鉗子に関する。
【0002】
【従来の技術】
内視鏡用生検鉗子は一般に、一体に形成された鉗子カップと駆動レバーとがシースの先端側に配置され、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り駆動レバーが支軸を中心に回動し、それによって鉗子カップが嘴状に開閉駆動されるようになっている。
【0003】
そのような従来の内視鏡用生検鉗子においては、図8に示されるように、図示されていない操作ワイヤの先端と駆動レバー8との間に介在するリンク板13が、駆動レバー8と並んで配置され、リベット18により回動自在な状態に連結されている。7は鉗子カップである。
【0004】
【発明が解決しようとする課題】
しかし、駆動レバー8とリンク板13とは、リベット18によりいわゆる片持ち状態に連結されているので、使用による磨耗やガタつき等によって、例えば図9に示されるように、かしいだ状態になり、リベット18が傾いたり曲がったりして動きが悪くなってしまう場合が少なくない。そして、最悪の場合にはリベット18が脱落してしまうこともある。
【0005】
そこで本発明は、鉗子カップと一体に形成された駆動レバーが円滑に作動して鉗子カップを確実に開閉させることができる内視鏡用生検鉗子を提供することを目的とする。
【0006】
【課題を解決するための手段】
上記の目的を達成するため、本発明の内視鏡用生検鉗子は、鉗子カップと駆動レバーとが一体的に形成されてシースの先端側に配置され、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り駆動レバーが支軸を中心に回動し、それによって鉗子カップが嘴状に開閉駆動されるようにした内視鏡用生検鉗子において、操作ワイヤの先端に設けられたワイヤ状部材の先端を曲げ戻してループを形成すると共に、駆動レバーを形成する部材により駆動レバーの後端部分にワイヤ係合部を形成し、ワイヤ状部材のループを駆動レバーのワイヤ係合部に回転自在に係合させたものである。
【0007】
なお、鉗子カップと駆動レバーとが、板材からプレス加工によって形成されていて、ワイヤ係合部が、駆動レバーの後端部分を支軸と平行な軸線を中心にしてワイヤループ内に緩く入る円筒形状に丸めた形状に形成されていてもよい。
【0008】
そして、ワイヤ係合部が、駆動レバーを形成する部材を部分的に二重に重ね合わせて形成されていてもよく、ワイヤ状部材が、操作ワイヤ自体の先端部分であってもよい。
【0009】
【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1及び図2は、内視鏡用生検鉗子の先端部分を示しており、図1は側面断面図、図2は平面断面図である。ただし、両図共に、少ない図面で構造を説明できるように、異なる断面を複合して図示してある。
【0010】
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は、例えばステンレス鋼線を一定の径で密着巻きして形成された密着巻コイルパイプからなる。
【0011】
ただし、シース1は密着巻コイルパイプに可撓性チューブを被覆したものや、その他の構成をとってもよく、その長さは例えば1〜2.5m程度、直径は1.5〜3mm程度である。
【0012】
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おり、シース1の基端側に連結された操作部(図示せず)からの操作によって操作ワイヤ2が進退操作される。
【0013】
この実施の形態においては、二本の操作ワイヤ2が例えば四フッ化エチレン樹脂製の一本の可撓性チューブ21内に並べて通された状態でシース1内に挿通されており、可撓性チューブ21の先端近傍において、二本の操作ワイヤ2が、相対的な位置ずれ防止をするための固着リング22によって一体的に固着されている。
【0014】
シース1の先端には支持本体3が固定的に連結されている。この支持本体3は、シース1の先端に連結される環状連結部31の先側に、コの字状に形成された支持枠部32が固着されて構成されている。
【0015】
この実施の形態の環状連結部31は、シース1の先端外周に螺合する螺旋状の凹凸がキャップ状の部材に形成されて構成され、支持枠部32は、板状の部材をコの字状に曲げてその開放部分を前方に向け、後端部分が環状連結部31に固着されている。そして、環状連結部31と支持枠部32との連結固着部の中心軸線位置には、操作ワイヤ2が緩く通る貫通孔が形成されている。
【0016】
支持本体3の先端近傍(即ち支持枠部32の先端近傍)には、軸線方向と直交する向きに支軸受孔4が貫通して穿設され、そこに支軸5が通されてかしめ固定されている。
【0017】
そして、鉗子カップ7と駆動レバー8とが一体に形成された二組の部材がその支軸5に回動自在に支持されており、一対の鉗子カップ7は、開放面どうしがあい対向した状態で支持本体3より前方に突出した位置に配置されている。
【0018】
駆動レバー8は、コの字状の支持枠部32の溝32a内に可動に収容されている。そして、両端が支持本体3に保持された支軸5が各駆動レバー8に穿設された軸孔11に通されていて、駆動レバー8が支軸5を中心に回動することにより、駆動レバー8と一体に形成された鉗子カップ7が嘴状に開閉動作をする。図3は、鉗子カップ7が開いた状態を示している。
【0019】
鉗子カップ7と駆動レバー8は、一枚のステンレス鋼板を素材としてプレス加工によって形成されており、図4にその部品単体の斜視図が示され、図2には平面断面の一部が示されている。
【0020】
鉗子カップ7と駆動レバー8は、全体として柄の短いスプーン状に形成されている。鉗子カップ7は背部分に孔7aが形成された半長球状であり、開放面の縁部には刃が形成されている。
【0021】
鉗子カップ7と駆動レバー8との境界部分9は、V−V断面を示す図5に示されるように略U字状の断面形状に形成されており、駆動レバー8も境界部分9と連続した略U字状の断面形状に形成されている。このように、断面形状が略U字状に形成された部分は、その底部が横方向の力に対抗する梁として作用し、優れた強度を有する。
【0022】
二本の操作ワイヤ2の先端部分は、各々曲げ戻されて閉じたループ2aが形成されており、そのループ2aが係合するワイヤ係合部18が駆動レバー8の後端部に形成されている。
【0023】
ワイヤ係合部18は、支軸5と平行な軸線を中心に駆動レバー8の後端部分を形成する部材を円筒形状に丸めて形成されており、操作ワイヤ2のループ2aが、ワイヤ係合部18に対して回転自在にワイヤ係合部18を囲む状態に緩く係合している。図1に示されるように、ワイヤ係合部18はほぼシース1の外径位置の前方に位置している。
【0024】
駆動レバー8の底部にはワイヤ係合部18に隣接する部分に溝孔8aが穿設されて、そこに操作ワイヤ2のループ2a部分が通されている。なおワイヤ係合部18は、図6及び図7に示されるように、大きめに切り欠いた駆動レバー8の壁部材を、部分的に二重に重ね合わせて形成してもよい。
【0025】
このような構成により、操作ワイヤ2を手元側から進退操作すれば、駆動レバー8が支軸5を中心に回動して、鉗子カップ7が嘴状に開閉し、使用時には、生体の粘膜組織を一組の鉗子カップ7の間に強く挟み込んで、食いちぎるようにして鉗子カップ7内に採取することができる。
【0026】
ワイヤ係合部18がシース1の外径位置の前方に位置している(即ち、中心軸位置からある程度離れている)ので、操作ワイヤ2の牽引により鉗子カップ7に強い閉止力が生じ、組織を強い力で食いちぎることができる。
【0027】
そして、駆動レバー8の後端部分に操作ワイヤ2の先端部分を係合させた構成であり、操作ワイヤ2は断面形状が略U字状の駆動レバー8のほぼ中心線位置に係合するので、駆動レバー8がかしいだり傾いたりせず円滑に作動し、鉗子カップ7を確実に開閉させることができる。
【0028】
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、駆動レバー8の後端に係合するワイヤは、シース1内に通された操作ワイヤ2の先端に連結された別部材であってもよく、鉗子カップ7は鰐口状その他どのような形状であっても差し支えない。
【0029】
【発明の効果】
本発明によれば、操作ワイヤの先端に設けられたワイヤ状部材の先端を曲げ戻してループを形成し、駆動レバーの後端部分に駆動レバーを形成する部材により形成されたワイヤ係合部に、ワイヤ状部材のループを係合させたことにより、鉗子カップと一体に形成された駆動レバーがかしいだりせず、円滑に作動して鉗子カップを確実に開閉させることができ、強い閉止力を得ることができる。
【図面の簡単な説明】
【図1】本発明の実施の形態の内視鏡用生検鉗子が閉じた状態の先端部分の側面複合断面図である。
【図2】本発明の実施の形態の内視鏡用生検鉗子が閉じた状態の先端部分の平面複合断面図である。
【図3】本発明の実施の形態の内視鏡用生検鉗子が開いた状態の先端部分の側面部分断面図である。
【図4】本発明の実施の形態の内視鏡用生検鉗子の鉗子カップと駆動レバーが一体に形成された部材の斜視図である。
【図5】本発明の実施の形態の内視鏡用生検鉗子の鉗子カップと駆動レバーとの境界部分の断面図(図4におけるV−V断面図)である。
【図6】本発明の実施の形態の内視鏡用生検鉗子のワイヤ係合部の変形例の部分断面図である。
【図7】本発明の実施の形態の内視鏡用生検鉗子のワイヤ係合部の第2の変形例の部分断面図である。
【図8】従来の内視鏡用生検鉗子の部分平面図である。
【図9】従来の内視鏡用生検鉗子の部分拡大断面図である。
【符号の説明】
1 シース
2 操作ワイヤ
2a ループ
5 支軸
7 鉗子カップ
8 駆動レバー
8a 溝孔
18 ワイヤ係合部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an endoscopic biopsy forceps that is inserted into a forceps channel of an endoscope and used to collect a biopsy tissue specimen from within a body cavity.
[0002]
[Prior art]
Endoscopic biopsy forceps generally have an integrally formed forceps cup and drive lever disposed on the distal end side of the sheath, and an operation wire inserted and disposed in the sheath is operated to advance and retract in the axial direction. Is rotated about the support shaft, whereby the forceps cup is driven to open and close like a bowl.
[0003]
In such a conventional endoscopic biopsy forceps, as shown in FIG. 8, the link plate 13 interposed between the tip of the operation wire (not shown) and the drive lever 8 is connected to the drive lever 8. They are arranged side by side and are connected by a rivet 18 so as to be rotatable. 7 is a forceps cup.
[0004]
[Problems to be solved by the invention]
However, since the drive lever 8 and the link plate 13 are connected to each other in a so-called cantilever state by the rivet 18, due to wear or play due to use, for example, as shown in FIG. In many cases, the rivet 18 tilts or bends, resulting in poor movement. In the worst case, the rivet 18 may fall off.
[0005]
Therefore, an object of the present invention is to provide an endoscopic biopsy forceps that can smoothly open and close a forceps cup by smoothly operating a drive lever formed integrally with the forceps cup.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an endoscopic biopsy forceps according to the present invention includes an operation wire in which a forceps cup and a drive lever are integrally formed and arranged at the distal end side of the sheath, and inserted into the sheath. In an endoscopic biopsy forceps in which the forceps cup is opened and closed in a bowl-like manner by rotating the actuator forward and backward in the axial direction, the drive lever is rotated around the support shaft. The tip of the provided wire-like member is bent back to form a loop, and the member that forms the drive lever forms a wire engaging portion at the rear end portion of the drive lever, and the loop of the wire-like member is connected to the wire of the drive lever. The engagement portion is rotatably engaged.
[0007]
Note that the forceps cup and the drive lever are formed by pressing from a plate material, and the wire engaging portion loosely enters the wire loop around the axis parallel to the support shaft at the rear end portion of the drive lever. You may form in the shape rounded to the shape.
[0008]
And the wire engaging part may be formed by partially overlapping the members forming the drive lever, and the wire-like member may be the tip portion of the operation wire itself.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a distal end portion of an endoscopic biopsy forceps, FIG. 1 is a side sectional view, and FIG. 2 is a plan sectional view. However, in both figures, different cross sections are shown in a complex manner so that the structure can be explained with a small number of drawings.
[0010]
A flexible sheath 1 that is inserted into and removed from a forceps channel of an endoscope (not shown) is formed of, for example, a tightly wound coil pipe formed by tightly winding a stainless steel wire with a constant diameter.
[0011]
However, the sheath 1 may have a tightly wound coil pipe covered with a flexible tube or other configurations, and the length is about 1 to 2.5 m and the diameter is about 1.5 to 3 mm, for example.
[0012]
An operation wire 2 is inserted through the entire length of the sheath 1 so as to be movable forward and backward in the axial direction. The operation wire 2 is operated by an operation from an operation portion (not shown) connected to the proximal end side of the sheath 1. Advancing / retreating is performed.
[0013]
In this embodiment, the two operation wires 2 are inserted into the sheath 1 in a state where the two operation wires 2 are arranged and passed through a single flexible tube 21 made of, for example, a tetrafluoroethylene resin. In the vicinity of the distal end of the tube 21, the two operation wires 2 are integrally fixed by a fixing ring 22 for preventing relative displacement.
[0014]
A support body 3 is fixedly connected to the distal end of the sheath 1. The support body 3 is configured by fixing a support frame portion 32 formed in a U-shape to the front side of an annular connection portion 31 connected to the distal end of the sheath 1.
[0015]
The annular connecting portion 31 of this embodiment is configured such that a spiral unevenness that is screwed to the outer periphery of the distal end of the sheath 1 is formed on a cap-like member, and the support frame portion 32 is formed by replacing a plate-like member with a U-shape. The rear end portion is fixed to the annular connecting portion 31 with its open portion facing forward and bent in a shape. A through-hole through which the operation wire 2 passes loosely is formed at the central axis position of the connection fixing portion between the annular connection portion 31 and the support frame portion 32.
[0016]
Near the tip of the support body 3 (that is, near the tip of the support frame portion 32), a support bearing hole 4 is drilled in a direction perpendicular to the axial direction, and the support shaft 5 is passed through and fixed by caulking. ing.
[0017]
Then, two sets of members in which the forceps cup 7 and the drive lever 8 are integrally formed are rotatably supported by the support shaft 5, and the pair of forceps cups 7 face each other with their open surfaces facing each other. And is disposed at a position protruding forward from the support body 3.
[0018]
The drive lever 8 is movably accommodated in the groove 32 a of the U-shaped support frame portion 32. The support shaft 5 having both ends held by the support body 3 is passed through the shaft holes 11 formed in each drive lever 8, and the drive lever 8 rotates around the support shaft 5 to drive. The forceps cup 7 formed integrally with the lever 8 opens and closes like a bowl. FIG. 3 shows a state where the forceps cup 7 is opened.
[0019]
The forceps cup 7 and the drive lever 8 are formed by pressing a single stainless steel plate as a raw material. FIG. 4 shows a perspective view of the component itself, and FIG. 2 shows a part of a plane cross section. ing.
[0020]
The forceps cup 7 and the drive lever 8 are formed in a short spoon shape as a whole. The forceps cup 7 has a hemispherical shape with a hole 7a formed in the back portion, and a blade is formed at the edge of the open surface.
[0021]
The boundary portion 9 between the forceps cup 7 and the drive lever 8 is formed in a substantially U-shaped cross section as shown in FIG. 5 showing the VV cross section, and the drive lever 8 is also continuous with the boundary portion 9. It is formed in a substantially U-shaped cross-sectional shape. Thus, the part in which the cross-sectional shape is formed in a substantially U shape acts as a beam whose bottom part opposes lateral force, and has excellent strength.
[0022]
The tip portions of the two operation wires 2 are respectively bent back to form a closed loop 2a, and a wire engaging portion 18 with which the loop 2a engages is formed at the rear end portion of the drive lever 8. Yes.
[0023]
The wire engaging portion 18 is formed by rounding a member forming the rear end portion of the drive lever 8 around an axis parallel to the support shaft 5 into a cylindrical shape, and the loop 2a of the operation wire 2 is formed by wire engagement. The wire 18 is loosely engaged with the portion 18 so as to freely rotate. As shown in FIG. 1, the wire engaging portion 18 is located approximately in front of the outer diameter position of the sheath 1.
[0024]
A slot 8a is formed in the bottom of the drive lever 8 at a portion adjacent to the wire engaging portion 18, and the loop 2a portion of the operation wire 2 is passed therethrough. As shown in FIGS. 6 and 7, the wire engaging portion 18 may be formed by partially overlapping the wall member of the drive lever 8 that is cut out in a large size.
[0025]
With such a configuration, when the operation wire 2 is moved forward and backward from the hand side, the drive lever 8 rotates about the support shaft 5 and the forceps cup 7 opens and closes in a hook shape. Can be taken between the pair of forceps cups 7 and collected in the forceps cup 7 so as to bite.
[0026]
Since the wire engaging portion 18 is located in front of the outer diameter position of the sheath 1 (that is, a certain distance from the central axis position), a strong closing force is generated in the forceps cup 7 by pulling the operation wire 2, and the tissue Can be eaten with a strong force.
[0027]
Then, the tip end portion of the operation wire 2 is engaged with the rear end portion of the drive lever 8, and the operation wire 2 is engaged with the substantially center line position of the drive lever 8 having a substantially U-shaped cross section. The drive lever 8 operates smoothly without being tilted or tilted, and the forceps cup 7 can be reliably opened and closed.
[0028]
In addition, this invention is not limited to the said embodiment, For example, the wire engaged with the rear end of the drive lever 8 is another member connected with the front-end | tip of the operation wire 2 penetrated in the sheath 1 The forceps cup 7 may have any shape such as a mouth opening or the like.
[0029]
【The invention's effect】
According to the present invention, the tip of the wire-like member provided at the tip of the operation wire is bent back to form a loop, and the wire engaging portion formed by the member that forms the drive lever at the rear end portion of the drive lever. By engaging the loop of the wire-like member, the drive lever formed integrally with the forceps cup is not distorted, it can operate smoothly and can open and close the forceps cup reliably, and has a strong closing force Can be obtained.
[Brief description of the drawings]
FIG. 1 is a side composite sectional view of a distal end portion in a state in which an endoscopic biopsy forceps according to an embodiment of the present invention is closed.
FIG. 2 is a plan composite sectional view of a distal end portion in a state where an endoscopic biopsy forceps according to an embodiment of the present invention is closed.
FIG. 3 is a side partial cross-sectional view of a distal end portion in a state where an endoscopic biopsy forceps according to an embodiment of the present invention is opened.
FIG. 4 is a perspective view of a member in which a forceps cup and a drive lever of an endoscopic biopsy forceps according to an embodiment of the present invention are integrally formed.
5 is a cross-sectional view (a VV cross-sectional view in FIG. 4) of a boundary portion between a forceps cup and a drive lever of an endoscopic biopsy forceps according to an embodiment of the present invention.
FIG. 6 is a partial cross-sectional view of a modification of the wire engaging portion of the biopsy forceps for endoscope according to the embodiment of the present invention.
FIG. 7 is a partial cross-sectional view of a second modification of the wire engaging portion of the biopsy forceps for endoscope according to the embodiment of the present invention.
FIG. 8 is a partial plan view of a conventional endoscopic biopsy forceps.
FIG. 9 is a partially enlarged cross-sectional view of a conventional endoscopic biopsy forceps.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sheath 2 Operation wire 2a Loop 5 Support shaft 7 Forceps cup 8 Drive lever 8a Slot 18 Wire engaging part

Claims (3)

鉗子カップと駆動レバーとが一体的に形成されてシースの先端側に配置され、上記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り上記駆動レバーが支軸を中心に回動し、それによって上記鉗子カップが嘴状に開閉駆動されるようにした内視鏡用生検鉗子であって
上記操作ワイヤの先端に設けられたワイヤ状部材の先端を曲げ戻してループを形成すると共に、上記駆動レバーを形成する部材により上記駆動レバーの後端部分にワイヤ係合部を形成し、上記ワイヤ状部材のループを上記駆動レバーのワイヤ係合部に回転自在に係合させたものにおいて、
上記鉗子カップと上記駆動レバーとが、板材からプレス加工により形成されていて、上記ワイヤ係合部が、上記駆動レバーの後端部分を上記支軸と平行な軸線を中心にして上記ワイヤループ内に緩く入る円筒形状に丸めた形状に形成されていることを特徴とする内視鏡用生検鉗子。
The forceps cup and the drive lever are integrally formed and arranged on the distal end side of the sheath. By operating the operation wire inserted and arranged in the sheath in the axial direction, the drive lever rotates around the support shaft. An endoscopic biopsy forceps that is configured to move so that the forceps cup is opened and closed like a bowl.
The tip of the wire-like member provided at the tip of the operation wire is bent back to form a loop, and a wire engaging portion is formed at the rear end portion of the drive lever by the member forming the drive lever. In which the loop of the member is rotatably engaged with the wire engaging portion of the drive lever ,
The forceps cup and the drive lever are formed by pressing from a plate material, and the wire engaging portion has a rear end portion of the drive lever in the wire loop with an axis parallel to the support shaft as a center. A biopsy forceps for an endoscope which is formed into a cylindrical shape that is loosely inserted into a cylindrical shape .
上記ワイヤ係合部が、上記駆動レバーを形成する部材を部分的に二重に重ね合わせて形成されている請求項記載の内視鏡用生検鉗子。It said wire engaging portion, an endoscopic biopsy forceps according to claim 1, wherein is formed by a member for forming the drive lever superimposed partially double. 上記ワイヤ状部材が、上記操作ワイヤ自体の先端部分である請求項1又は2記載の内視鏡用生検鉗子。The biopsy forceps for an endoscope according to claim 1 or 2 , wherein the wire-like member is a tip portion of the operation wire itself.
JP25514699A 1999-09-03 1999-09-09 Endoscopic biopsy forceps Expired - Fee Related JP3650550B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP25514699A JP3650550B2 (en) 1999-09-09 1999-09-09 Endoscopic biopsy forceps
US09/654,521 US6554850B1 (en) 1999-09-03 2000-09-01 Endoscopic biopsy forceps
DE10043163A DE10043163B4 (en) 1999-09-03 2000-09-01 Joining sensor for position accurate mounting of components or hubs, has hollow cylindrical joining part, sealing arrangement, and ring sealing
DK200001311A DK200001311A (en) 1999-09-03 2000-09-04 Endoscopic biopsy forceps.

Applications Claiming Priority (1)

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JP25514699A JP3650550B2 (en) 1999-09-09 1999-09-09 Endoscopic biopsy forceps

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Publication number Priority date Publication date Assignee Title
US8469993B2 (en) 2003-06-18 2013-06-25 Boston Scientific Scimed, Inc. Endoscopic instruments
US20040260337A1 (en) 2003-06-18 2004-12-23 Scimed Life Systems, Inc. Endoscopic instruments and methods of manufacture
US7276066B2 (en) 2003-10-29 2007-10-02 Pentax Corporation Medical instrument for endoscope
JP5194238B2 (en) * 2007-10-04 2013-05-08 有限会社リバー精工 Endoscopic biopsy forceps
WO2017110287A1 (en) 2015-12-25 2017-06-29 株式会社カネカ Endoscope forceps and method for manufacturing endoscope forceps
EP4417153A1 (en) * 2023-02-15 2024-08-21 Finemedix Co., Ltd. Hemostatic forceps for endoscope
KR20250110696A (en) * 2024-01-12 2025-07-21 주식회사 엔도로보틱스 Forceps structure

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