JP4629222B2 - Endoscopic alligator biopsy forceps - Google Patents

Endoscopic alligator biopsy forceps Download PDF

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JP4629222B2
JP4629222B2 JP2000391771A JP2000391771A JP4629222B2 JP 4629222 B2 JP4629222 B2 JP 4629222B2 JP 2000391771 A JP2000391771 A JP 2000391771A JP 2000391771 A JP2000391771 A JP 2000391771A JP 4629222 B2 JP4629222 B2 JP 4629222B2
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forceps
cups
alligator
pair
edge
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JP2002191605A (en
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直哉 大内
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Hoya株式会社
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【0001】 [0001]
【発明の属する技術分野】 BACKGROUND OF THE INVENTION
この発明は、鉗子カップの噛み合わせ縁が鋸歯状に形成された内視鏡用鰐口型生検鉗子に関する。 This invention relates to an endoscopic alligator biopsy forceps edge engagement of the forcep cups are formed in a sawtooth shape.
【0002】 [0002]
【従来の技術】 BACKGROUND OF THE INVENTION
内視鏡用生検鉗子は一般に、可撓性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、可撓性シースの先端に配置された一対の鉗子カップが嘴状に開閉駆動されるようになっている。 The endoscopic biopsy forceps generally an insertion placed operating wire in the flexible sheath by advancing and retracting operation in the axial direction, a pair of forceps cups disposed at the distal end of the flexible sheath is a beak is opened and closed driven.
【0003】 [0003]
そのような内視鏡用生検鉗子の鉗子カップには各種の形状があるが、図5に示される鰐口型生検鉗子は、鉗子カップ1を閉じたときに粘膜組織によく食い込むように、鉗子カップ1の噛み合わせ縁1aが鋸歯状に形成されている。 Such While the forcep cups of the endoscope biopsy forceps have various shapes, alligator biopsy forceps shown in Figure 5, as bite well mucosal tissue when closing the forceps cups 1, the engagement edge 1a forcep cups 1 are formed in a sawtooth shape.
【0004】 [0004]
【発明が解決しようとする課題】 [Problems that the Invention is to Solve
図6は上述のような従来の内視鏡用鰐口型生検鉗子の鉗子カップ1が閉じた状態を示しており、鋸歯状部分に形成された双方の噛み合わせ縁1aの尖った部分どうしが噛み合わされるように構成されている。 6 shows a state in which the forceps cup 1 of a conventional endoscopic alligator biopsy forceps as described above is closed, pointed portions each other edge 1a engagement of both formed in a serrated portion It is configured to be engaged.
【0005】 [0005]
その結果、噛み合わせ縁1aの尖った部分の先端が粘膜組織にある程度刺さった状態にはなるが、粘膜面に浅く食い込む状態にしかならないので、格別に優れた粘膜組織採取能力を得ることはできなかった。 As a result, the tip of the pointed portion of the engagement edge 1a becomes the state stuck to some extent to the mucosal tissue, since not only shallower bites state mucosal surface, can be obtained exceptionally good mucosal tissue sampling capability There was no.
【0006】 [0006]
また、鉗子カップ1を空間中で開閉させることによって噛み合わせ縁1aの尖った部分どうしがぶつかって歯こぼれを起こし易いので、鉗子カップ1の切れ味が短期間で劣化してしまう場合があった。 Further, since susceptible to tooth spill each other pointed parts of the engagement edge 1a is bumped by opening and closing the forceps cups 1 in space, there is a case where sharpness forcep cup 1 is deteriorated in a short period of time.
【0007】 [0007]
そこで本発明は、鉗子カップの噛み合わせ縁が粘膜組織によく食い込んで優れた粘膜組織採取能力を得ることができ、しかも噛み合わせ縁に歯こぼれが発生し難くて耐久性の優れた内視鏡用鰐口型生検鉗子を提供することを目的とする。 The present invention is an endoscope edge engagement of the forceps cup can be obtained an excellent mucosal tissue collection capability bite well mucosal tissue, which moreover meshing teeth spill edge excellent in durability hardly occurs an object of the present invention is to provide a use alligator type biopsy forceps.
【0008】 [0008]
【課題を解決するための手段】 In order to solve the problems]
上記の目的を達成するため、本発明の内視鏡用内視鏡用鰐口型生検鉗子は、可撓性シースの先端に配置された鋸歯状の噛み合わせ縁を有する一対の鰐口型の鉗子カップが、可撓性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嘴状に開閉駆動される内視鏡用鰐口型生検鉗子において、操作ワイヤが基端側から牽引されて一対の鉗子カップが限界まで閉じた状態のときに、各鉗子カップの噛み合わせ縁の鋸歯状部分が、互い違いに噛み合わさるようにしたものである。 To achieve the above object, the endoscope alligator biopsy forceps for endoscopic of the present invention, a pair of alligator type forceps having a distal end to the arrangement sawtooth of mating edges of the flexible sheath cup, pulling the insertion arranged operating wire in the flexible sheath in alligator biopsy forceps for an endoscope which is driven to open and close the beak by advancing and retracting operation in the axial direction, the operation wire from the base end side it is when a pair of forceps cups of closed to the limit, the serrated portion of the edge engagement of the forceps cup is obtained by the staggered Kamiawasaru so.
【0009】 [0009]
なお、各鉗子カップの噛み合わせ縁の鋸歯状部分が、全範囲において隙間を有する状態で噛み合わさるようにすれば、歯こぼれの発生が防止されて耐久性上好ましい。 Incidentally, serrated portion of the edge engagement of the forceps cups, if the Kamiawasaru so in a state of having a gap in the entire range, the occurrence of teeth spill is prevented on durability preferable.
【0010】 [0010]
その場合、操作ワイヤの進退運動を鉗子カップの開閉運動に変換するリンク機構が可撓性シースの先端部分に設けられていて、鉗子カップが限界まで閉じた状態のときに一対の鉗子カップどうしが当接しないように鉗子カップの閉じ動作を規制するストッパが、リンク機構部分に設けられていてもよい。 In that case, the forward and backward movement of the operation wire have a link mechanism for converting the opening and closing movement of the forceps cup provided at the tip portion of the flexible sheath, each other pair of forceps cups in a state in which the forceps cup is closed to the limit is a stopper for restricting the contact was not close operation of the forcep cups as may be provided in the link mechanism portion.
【0011】 [0011]
また、一対の鉗子カップが限界まで閉じた状態のときの双方の噛み合わせ縁間の隙間は0.2mm以下であるのが好ましい。 Also, preferably the gap between both of mating edges of a state where the pair of forcep cups are closed to the limit is 0.2mm or less.
【0012】 [0012]
【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION
図面を参照して本発明の実施例を説明する。 With reference to the accompanying drawings illustrating the embodiment of the present invention.
図2は、内視鏡用鰐口型生検鉗子を示しており、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シース2は例えば密着巻コイルパイプからなり、その内部には、軸線方向に進退自在に操作ワイヤ3が全長にわたって挿通配置されている。 Figure 2 shows an endoscopic alligator biopsy forceps, the flexible sheath 2 to be inserted into and removed from a forceps channel of an endoscope not shown is made of, for example, adhesion wound coil pipe, therein is retractably operation wire 3 is inserted and arranged over the entire length in the axial direction.
【0013】 [0013]
可撓性シース2の基端(手元側)には、操作ワイヤ3を進退操作させるための操作部10が連結されており、可撓性シース2の先端には、操作ワイヤ3によって開閉駆動される一対の鉗子カップ1が配置されている。 The proximal end of the flexible sheath 2 (hand side), the operation wire 3 the operation unit 10 is coupled for advancing and retracting operation of the tip of the flexible sheath 2 is driven to be opened and closed by the operation wire 3 a pair of forcep cups 1 are arranged that.
【0014】 [0014]
図1及び図3は内視鏡用鰐口型生検鉗子の先端部分を示しており、可撓性シース2の先端に固着された先端支持枠4に、鋸歯状の噛み合わせ縁1aを有する一対の鉗子カップ1が、支持軸5を中心に嘴状に開閉するように支持されている。 1 and 3 show the distal end portion of alligator biopsy forceps for an endoscope, the flexible sheath 2 of the tip support frame 4 which is secured to the distal end, the pair having a serrated interdigitated edge 1a forceps cups 1 is supported so as to open and close the beak around the support shaft 5.
【0015】 [0015]
操作ワイヤ3と鉗子カップ1との間にはパンタグラフ状のリンク機構6が配置されており、リンク機構6の後端部に配置されたワイヤ接続ロッド7に、操作ワイヤ3の先端部分が後方から連結固着されている。 Operation are disposed pantograph-shaped link mechanism 6 is provided between the wire 3 and the forcep cups 1, the wire connecting rod 7 disposed on the rear end portion of the link mechanism 6, the tip portion of the operation wire 3 is rear It is fixedly connected.
【0016】 [0016]
その結果、操作部10において操作ワイヤ3を進退操作することにより、ワイヤ接続ロッド7が軸線方向に進退して、操作ワイヤ3の進退動作を鉗子カップ1の開閉動作に変換するようにリンク機構6が動作し、一対の鉗子カップ1が嘴状に開閉駆動される。 As a result, by advancing and retracting operation of the operation wire 3 in the operating unit 10, the wire connection rod 7 moves forward and backward in the axial direction, the operation link mechanism 6 so as to convert the opening and closing operation of the forward and backward movement of the wire 3 forcep cup 1 There work, the pair of forcep cups 1 is driven to open and close the beak.
【0017】 [0017]
このとき、操作ワイヤ3が基端側から牽引されて一対の鉗子カップ1が限界まで閉じた状態になると、各鉗子カップ1の噛み合わせ縁1aの鋸歯状部分が、互い違いに噛み合わさる。 At this time, when the operation wire 3 is in a state where it is pulled from the proximal end side is a pair of forceps cups 1 closed to the limit, serrated portion of the engagement edge 1a each forcep cups 1, alternately Kamiawasaru.
【0018】 [0018]
したがって、一対の鉗子カップ1の間に粘膜組織を挟み付けることにより、鉗子カップ1の噛み合わせ縁1aが粘膜組織によく食い込んで、優れた粘膜組織採取能力を得ることができる。 Therefore, by sandwiching the mucosal tissue between the pair of forcep cups 1, the engagement edge 1a forcep cups 1 bite well mucosal tissue, it is possible to obtain an excellent mucosal tissue collection capability.
【0019】 [0019]
また、図1に示されるように、操作ワイヤ3が基端側から牽引されて鉗子カップ1が限界まで閉じた状態のとき、ワイヤ接続ロッド7に形成された段部からなるストッパ8が、先端支持枠4に形成されたロッド通過孔の口元に当接して、それ以上鉗子カップ1が閉じないように鉗子カップ1の閉じ動作を規制している。 Further, as shown in FIG. 1, when the operation wire 3 is in a state in which the forceps cup 1 is pulled from the proximal end side is closed to the limit, the stopper 8 formed of a step portion formed in the wire connection rod 7, the tip in the mouth of the rod passage hole formed in the support frame 4 abuts, more forcep cups 1 regulates the closing operation of the forcep cups 1 so as not to close.
【0020】 [0020]
そのように鉗子カップ1が限界まで閉じた状態のとき、図4に示されるように一対の鉗子カップ1どうしは当接せず、双方の噛み合わせ縁1aどうしが全範囲において隙間を有した状態で噛み合わさる。 State so forcep cups 1 when closed to the limit, and if the pair of forcep cups 1 as shown in FIG. 4 does not abut, which is what both of mating edges 1a has a clearance in the entire range in Kamiawasaru.
【0021】 [0021]
したがって、鉗子カップ1を空間中で開閉させても噛み合わせ縁1aどうしがぶつからず、歯こぼれが発生しないので、鉗子カップ1の切れ味が長期間にわたって劣化しない。 Therefore, by opening and closing the forceps cups 1 in space and if also engaging edge 1a is not hit, because teeth spill does not occur, the sharpness of the forcep cups 1 does not deteriorate over a long period of time.
【0022】 [0022]
なお、鉗子カップ1が限界まで閉じた状態のとき、双方の鉗子カップ1の噛み合わせ縁1a間の隙間は0.2mm程度以下であるのが組織採取能力上から好ましく、製造上から0.01mmより大きいのが好ましい。 Incidentally, the state where the forceps cup 1 is closed to the limit, the gap between the engagement edges 1a both forcep cups 1 preferably from the tissue sampling capability not more than about 0.2 mm, 0.01 mm from the manufacture preferably larger.
【0023】 [0023]
【発明の効果】 【Effect of the invention】
本発明によれば、操作ワイヤが基端側から牽引されて一対の鉗子カップが限界まで閉じた状態のときに、各鉗子カップの噛み合わせ縁の鋸歯状部分が互い違いに噛み合わさるようにしたことにより、噛み合わせ縁が粘膜組織によく食い込んで優れた粘膜組織採取能力を得ることができる。 According to the present invention, the pair of forcep cups operating wire is pulled from the proximal end side when closed to the limit, serrated portion of the edge engagement of the forceps cup was alternately Kamiawasaru so Accordingly, it is possible to engagement edge to obtain a superior mucosal tissue collection capability bite well mucosal tissue.
【0024】 [0024]
また、各鉗子カップの噛み合わせ縁の鋸歯状部分が、全範囲において隙間を有する状態で噛み合わさるようにすることにより、噛み合わせ縁に歯こぼれが発生し難くて優れた耐久性を得ることができる。 Further, serrated portion of the edge engagement of the forceps cup, by the Kamiawasaru so in a state of having a gap in the entire range, the tooth spilled engagement edge that obtain excellent durability hardly occurs it can.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】本発明の実施例の内視鏡用鰐口型生検鉗子の鉗子カップが閉じた状態の先端部分の側面部分断面図である。 1 is a side partial cross-sectional view of a distal portion of the state of the endoscope alligator biopsy forceps of the forceps cup is closed embodiment of the present invention.
【図2】本発明の実施例の内視鏡用鰐口型生検鉗子の全体構造を示す外観側面図である。 2 is an external side view showing the overall structure of the endoscope alligator biopsy forceps embodiments of the present invention.
【図3】本発明の実施例の内視鏡用鰐口型生検鉗子の鉗子カップが開いた状態の先端部分の側面部分断面図である。 3 is a side partial cross-sectional view of a distal portion of the state in which the forceps cups endoscopic alligator biopsy forceps are in the open embodiment of the present invention.
【図4】本発明の実施例の内視鏡用鰐口型生検鉗子の鉗子カップが閉じた状態の先端部分の拡大側面図である。 4 is an enlarged side view of a distal portion of the state of the endoscope alligator biopsy forceps of the forceps cup is closed embodiment of the present invention.
【図5】従来の内視鏡用鰐口型生検鉗子の鉗子カップが開いた状態の先端部分の側面部分断面図である。 5 is a side partial cross-sectional view of a distal portion of the conventional state of the endoscope alligator biopsy forceps of the forceps cup is opened.
【図6】従来の内視鏡用鰐口型生検鉗子の鉗子カップが閉じた状態の先端部分の側面部分断面図である。 [6] forcep cups of conventional endoscopic alligator biopsy forceps is a side partial cross-sectional view of a distal portion of the closed state.
【符号の説明】 DESCRIPTION OF SYMBOLS
1 鉗子カップ1a 噛み合わせ縁2 可撓性シース3 操作ワイヤ4 先端支持枠6 リンク機構7 ワイヤ接続ロッド8 ストッパ10 操作部 1 forcep cups 1a engagement edge 2 the flexible sheath 3 manipulation wire 4 tip supporting frame 6 linkage 7 wires connecting rod 8 stopper 10 operating unit

Claims (2)

  1. 可撓性シースの先端に配置された鋸歯状の噛み合わせ縁を有する一対の鰐口型の鉗子カップが、上記可撓性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嘴状に開閉駆動される内視鏡用鰐口型生検鉗子であって Beak by a pair of alligator type forceps cup with a flexible engaging sheath of arranged serrated tip of the edge, forward and backward operates the operating wire is inserted and arranged within the flexible sheath in the axial direction Jo in a crocodile-type biopsy forceps for an endoscope which is opening and closing,
    上記操作ワイヤが基端側から牽引されて上記一対の鉗子カップが限界まで閉じた状態のときに、上記各鉗子カップの噛み合わせ縁の鋸歯状部分が、 全範囲において隙間を有する状態で互い違いに噛み合わさるものにおいて When the state in which the operation wire is pulled from the proximal end side the pair of forcep cups closed to the limit, serrated portion of the edge engagement of the respective forceps cups, alternately in a state of having a gap in the entire range in Kamiawasaru stuff,
    上記操作ワイヤの進退運動を上記鉗子カップの開閉運動に変換するリンク機構が上記可撓性シースの先端部分に設けられていて、上記鉗子カップが限界まで閉じた状態のときに上記一対の鉗子カップどうしが当接しないように上記鉗子カップの閉じ動作を規制するストッパが、上記リンク機構部分に設けられていることを特徴とする内視鏡用鰐口型生検鉗子。 Link mechanism for converting the reciprocating movement of the operating wire to the opening and closing movement of said forceps cup is provided at the distal end portion of the flexible sheath, the pair of forcep cups in a state in which the forceps cup is closed to the limit What happened stopper for restricting the closing operation of the forcep cups so as not to contact the endoscopic alligator biopsy forceps, characterized in that provided on the link mechanism portion.
  2. 上記一対の鉗子カップが限界まで閉じた状態のときの双方の噛み合わせ縁間の隙間が0.2mm以下である請求項記載の内視鏡用鰐口型生検鉗子。 The pair of both the gap between the edge engagement of is 0.2mm or less claim 1 endoscope alligator biopsy forceps according to the state where the forceps cup is closed to the limit.
JP2000391771A 2000-12-25 2000-12-25 Endoscopic alligator biopsy forceps Active JP4629222B2 (en)

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US20040260337A1 (en) 2003-06-18 2004-12-23 Scimed Life Systems, Inc. Endoscopic instruments and methods of manufacture
US8469993B2 (en) 2003-06-18 2013-06-25 Boston Scientific Scimed, Inc. Endoscopic instruments

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62253040A (en) * 1986-04-24 1987-11-04 Olympus Optical Co Biopsy forcept for endoscope
JPH09507150A (en) * 1994-01-05 1997-07-22 シンバイオシス・コーポレーション Instrument incorporating the endoscopic biopsy forceps jaws and the forceps
JPH10506035A (en) * 1994-09-22 1998-06-16 シンバイオシス・コーポレーション Instrument comprising an endoscopic biopsy forceps jaws and the jaw

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Publication number Priority date Publication date Assignee Title
JP3791875B2 (en) * 1998-10-29 2006-06-28 オリンパス株式会社 Ultrasonic treatment instrument
JP2000210294A (en) * 1998-11-20 2000-08-02 Asahi Optical Co Ltd Biopsy forceps for endoscope

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62253040A (en) * 1986-04-24 1987-11-04 Olympus Optical Co Biopsy forcept for endoscope
JPH09507150A (en) * 1994-01-05 1997-07-22 シンバイオシス・コーポレーション Instrument incorporating the endoscopic biopsy forceps jaws and the forceps
JPH10506035A (en) * 1994-09-22 1998-06-16 シンバイオシス・コーポレーション Instrument comprising an endoscopic biopsy forceps jaws and the jaw

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