JP4589731B2 - Endoscopic high-frequency treatment instrument - Google Patents

Endoscopic high-frequency treatment instrument

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JP4589731B2
JP4589731B2 JP2005001984A JP2005001984A JP4589731B2 JP 4589731 B2 JP4589731 B2 JP 4589731B2 JP 2005001984 A JP2005001984 A JP 2005001984A JP 2005001984 A JP2005001984 A JP 2005001984A JP 4589731 B2 JP4589731 B2 JP 4589731B2
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JP2006187474A (en )
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智志 木戸岡
憲幸 杉田
高史 豊永
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Hoya株式会社
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この発明は、内視鏡の処置具挿通チャンネルに挿脱されるシースの先端から前方に突没する針状高周波電極が設けられた内視鏡用高周波処置具に関する。 This invention relates to endoscopic high-frequency treatment instrument needle RF electrode to project and retract from the distal end of the sheath to be inserted into and removed from the treatment instrument insertion channel of the endoscope forward is provided.

体内の粘膜組織等を切開/凝固する処置を行う内視鏡用高周波処置具は、処置対象となる粘膜表面を切開前に洗浄し、切開中には焼け焦げて電極やその周辺に付着した粘膜組織の焼灼片等を洗い流せるように構成するのが望ましい。 The endoscopic high-frequency treatment instrument that performs treatment for incising / coagulating body mucosal tissue or the like, washing the mucosal surface to be treated before dissection, the mucosal tissue attached to the electrodes and around Te charring during incision desirably configured to wash away the ablation member and the like.

そこで、内視鏡用高周波処置具には、内視鏡の処置具挿通チャンネルに挿脱される電気絶縁性のシース内に、シースの手元側からの操作によってシースの先端から前方に突没する高周波電極を設けると共に、高周波電極(及び、高周波電極に連結された操作ワイヤ)の周囲を囲む空間を、シースの先端から噴出させる水を通過させるための送水路として用いるようにしたものがある(例えば、特許文献1)。 Therefore, the endoscopic high-frequency treatment instrument, the endoscopic treatment instrument insertion channel electrically insulating sheath to be inserted into and removed, to project and retract from the distal end of the sheath forward by manipulation from the proximal side of the sheath provided with a high-frequency electrode, the high-frequency electrodes (and, operating wire connected to the high-frequency electrode) space surrounding the are those as adapted to use as a water supply path for passing water to be ejected from the distal end of the sheath ( For example, Patent Document 1).
特開平6−292685 JP-A-6-292685

しかし、高周波電極の周囲を囲む空間を送水路として用いると、高周波電極がシースの先端から突出した状態の時とシース内に引っ込んだ状態の時とで送水量や水流の状態が大きく相違するため、非常に使い難い場合がある。 However, the use of space surrounding the periphery of the high-frequency electrode as aqueducts, since the high-frequency electrodes the state of water quantity and water at the time when the retracted state into the sheath of the state of protruding from the distal end of the sheath is significantly different , it may be difficult very easy to use.

そこで、シース内に、高周波電極に連結された操作ワイヤが挿通されるワイヤ挿通孔と送水路とを互いに独立して並列に設けることが考えられるが、高周波電極をシースの軸線位置に配置すると送水路の断面積が小さくなってしまい、かといって高周波電極がシースの軸線位置にないと、切開操作の際に針状高周波電極の位置がつかめず非常に使い難いものになってしまう場合がある。 Therefore, within the sheath, when the operation wire connected to a high frequency electrode it is conceivable to provide in parallel with one another independently of the wire insertion hole and the water supply channel to be inserted, placing a high-frequency electrode in the axial position of the sheath feed there is a case where the cross-sectional area of ​​the channel becomes small, or the said high-frequency electrode when not in the axis position of the sheath, the position of the needle frequency electrode during the incision operation becomes what hardly very easy to use without Seize .

そこで本発明は、送水路から噴出される送水量や水流の状態が高周波電極の突没状態に左右されず、しかも高周波電極をシースの軸線位置で突没させることができる使い易い内視鏡用高周波処置具を提供することを目的とする。 The present invention, transmission conditions of the water supply quantity and flow of water ejected from the water passage is not affected by the project and retreat state of the high-frequency electrode, yet easy to use for an endoscope that can project and retreat the high-frequency electrode in the axial position of the sheath and to provide a high-frequency treatment instrument.

上記の目的を達成するため、本発明の内視鏡用高周波処置具は、内視鏡の処置具挿通チャンネルに挿脱される電気絶縁性のシース内に、シースの手元側からの操作によってシースの先端から前方に突没する針状の高周波電極と、シースの先端から噴出させる水を通過させるための送水路とが設けられた内視鏡用高周波処置具において、シース内に、高周波電極に連結された操作ワイヤが軸線方向に進退自在に挿通されるワイヤ挿通孔と送水路とを互いに独立して各々シースの軸線位置から偏心した位置に並列に形成すると共に、高周波電極を、シースの軸線位置においてシースの先端から突没するように操作ワイヤに対して偏心させて連結したものである。 To achieve the above object, the endoscopic high-frequency treatment instrument of the present invention, the electrically insulating sheath that is inserted into and removed from the treatment instrument insertion channel of an endoscope, the sheath by an operation from the proximal side of the sheath a needle-shaped high-frequency electrode to project and retract to the front from the tip of the endoscopic high-frequency treatment instrument that water supply channel and is provided for passing the water to be ejected from the distal end of the sheath, in the sheath, the high-frequency electrode linked operation wire is thereby formed in parallel at a position eccentric from each axis position of the sheath independently a wire insertion hole to be inserted retractably in the axial direction and aqueducts to each other, the high-frequency electrode, the axis of the sheath is the concatenation by decentering with respect to the operation wire so as to project and retract from the distal end of the sheath in position.

なお、高周波電極と操作ワイヤとが、他の連結部材を用いることなく互いの側面どうしを直接固着して連結されていてもよく、高周波電極がワイヤ挿通孔の先端部分で振らつくのを規制するための電極振らつき規制部材がシースの先端部分に設けられているとよい。 Incidentally, the operation and the high-frequency electrode wires may be connected by fixing to each other side each other directly, the high-frequency electrode to restrict the take swung tip portion of the wire insertion hole without using another coupling member it may electrode swung regard regulating member for is provided on the tip portion of the sheath.

そして、電極振らつき規制部材に、高周波電極は通過するが操作ワイヤは通過しない電極ガイド孔が形成されていて、その電極ガイド孔がシースの軸線位置に配置される状態に電極振らつき規制部材がシースの最先端部分に固着されていてもよい。 Then, the regulating member per swung electrode, the high frequency electrodes are but operating wire be formed is not the electrode guide holes pass passage, the regulating member per swung electrode in a state where the electrode guide holes are arranged in the axial position of the sheath it may be fixed to the cutting-edge portion of the sheath.

本発明によれば、シース内に、高周波電極に連結された操作ワイヤが軸線方向に進退自在に挿通されるワイヤ挿通孔と送水路とを互いに独立して各々シースの軸線位置から偏心した位置に並列に形成したことにより、送水路から噴出される送水量や水流の状態が高周波電極の突没状態に左右されず、さらに、高周波電極を、シースの軸線位置においてシースの先端から突没するように操作ワイヤに対して偏心させて連結したことにより、シースの軸線位置で高周波電極を突没させることができるので非常に使い易く、電極振らつき規制部材をシースの先端部分に設けることにより高周波電極が振らつかなくなるので、より安全に使用することができる。 According to the present invention, within the sheath, the operating wire connected to the high-frequency electrode is decentered from each axis position of the sheath independently a wire insertion hole to be inserted retractably in the axial direction and water supply channel together position by forming parallel, the state of the water supply quantity and flow of water ejected from the feed water path without being affected by the project and retreat state of the high-frequency electrode, further, the high-frequency electrode, so as to project and retract from the distal end of the sheath in the axial position of the sheath to by coupled by an eccentric with respect to the operation wire, high-frequency electrode by providing very easy to use because the high-frequency electrode can be protruded or retracted in the axial position of the sheath, the electrodes swung per regulating member to the tip portion of the sheath because there is no longer stick swung, it can be safer to use.

内視鏡の処置具挿通チャンネルに挿脱される電気絶縁性のシース内に、シースの手元側からの操作によってシースの先端から前方に突没する針状の高周波電極と、シースの先端から噴出させる水を通過させるための送水路とが設けられた内視鏡用高周波処置具において、シース内に、高周波電極に連結された操作ワイヤが軸線方向に進退自在に挿通されるワイヤ挿通孔と送水路とを互いに独立して各々シースの軸線位置から偏心した位置に並列に形成すると共に、高周波電極を、シースの軸線位置においてシースの先端から突没するように操作ワイヤに対して偏心させて連結する。 The endoscopic treatment instrument insertion channel electrically insulating sheath to be inserted into and removed from, jet and needle-shaped high-frequency electrode to project and retract to the front from the distal end of the sheath by an operation from the proximal side of the sheath, the distal end of the sheath in endoscopic high-frequency treatment instrument that water supply channel and is provided for passing the water to be, within the sheath, feeding a wire insertion hole which the operation wire connected to a high frequency electrode is inserted retractably in the axial direction a water channel independently of each other with each formed in parallel at a position eccentric from the axis position of the sheath, the high-frequency electrode, by decentering with respect to the operation wire so as to project and retract from the distal end of the sheath in the axial position of the sheath connecting to.

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と図3は、本発明の第1の実施例の内視鏡用高周波処置具の全体構成を示す平面図と側面断面図であり、例えば四フッ化エチレン樹脂等のような電気絶縁性の合成樹脂製の可撓性チューブからなるシース1は、図示されていない内視鏡の処置具挿通チャンネルに挿脱自在なように、直径が2mm程度で長さが1〜2m程度に形成されている。 2 and 3, first a plan view and a side sectional view showing the overall configuration of the endoscopic high-frequency treatment instrument of embodiment, for example, electrically insulating, such as tetrafluoroethylene resin of the present invention sheath 1 made of a synthetic resin flexible tube, as is detachably the treatment instrument insertion channel of an endoscope not shown, diameter length of about 2mm are formed about 1~2m ing.

シース1は、図4に断面が示されるように、ワイヤ挿通孔2と送水路3の二つの貫通孔が軸線方向に並列に形成されたいわゆるマルチルーメンチューブであり、ワイヤ挿通孔2と送水路3の軸線位置はいずれもシース1の軸線1xの位置に対して偏心している。 The sheath 1, as cross-section is shown in Figure 4, two through-holes of the channel 3 feed the wire insertion hole 2 is a so-called multi-lumen tube formed in parallel in the axial direction, waterways feeding the wire insertion hole 2 axis position of 3 is eccentric with respect to any position in the axial 1x sheath 1. ただし、シース1の軸線1xはワイヤ挿通孔2内に含まれる位置にある。 However, the axis of the sheath 1 1x is in a position included in the wire insertion hole 2.

図2及び図3に戻って、シース1の先端には、針状の高周波電極4が突没自在に配置されており、その高周波電極4を突没操作するための操作部10がシース1の基端側(即ち、手元側)に連結されている。 Returning to FIG. 2 and 3, the distal end of the sheath 1, needle-like high-frequency electrode 4 are arranged to be freely projecting and retracting, the high-frequency electrode 4 operating unit 10 for projecting and retracting operation of the sheath 1 the base end side (i.e., proximal) is connected to.

シース1のワイヤ挿通孔2内には例えばステンレス鋼撚り線等からなる導電性の操作ワイヤ5が軸線方向に進退自在に全長にわたって挿通配置されていて、その先端に高周波電極4が連結されている。 The inside wire insertion hole 2 of the sheath 1 for example, a conductive operation wire 5 made of stainless steel stranded wire or the like have been inserted and arranged over the entire length retractably in the axial direction, the high-frequency electrode 4 is connected at its distal end .

操作ワイヤ5の基端は、操作部10の操作部本体11に対してスライド操作自在に設けられたスライド操作部材12に連結されており、スライド操作部材12を操作することにより操作ワイヤ5を介して高周波電極4をシース1の先端から突没させることができる。 The proximal end of the operation wire 5 is connected to the slide operation member 12 provided slidably operating with respect to the operation portion main body 11 of the operation unit 10, via the operation wire 5 by operating the slide operation member 12 thereby project and retract the high-frequency electrode 4 from the distal end of the sheath 1 Te. また、スライド操作部材12に配置された接続端子13に図示されていない高周波電源コードを接続することにより、操作ワイヤ5を介して高周波電極4に高周波電流を通電することができる。 Further, by connecting a high-frequency power source cord (not shown) to the connection terminals 13 disposed in the slide operation member 12 can be a high frequency current to the high-frequency electrode 4 via the operation wire 5.

シース1の送水路3の基端側は、操作部10に配置された注水口金14に接続チューブ15を介して連通接続されており、図示されていない注水具等を注水口金14に接続することにより、シース1の最先端面に位置する送水路3先端の水噴出口3aから前方に水等を噴出させることができる。 The base end side of the water supply passage 3 of the sheath 1 is communicatively connected via a connection tube 15 to the water injection die 14 arranged in the operation unit 10, connecting a water injection device (not shown) or the like to the water injection cap 14 Accordingly, it is possible to jet water or the like forward from feed water channel 3 leading end of the water spout 3a is at the forefront surface of the sheath 1.

図1はシース1の先端付近を示しており、図5はそのV−V断面図、図6はVI−VI断面図である。 Figure 1 shows the vicinity of the distal end of the sheath 1, Figure 5 is the sectional view taken along line V-V, FIG. 6 is a VI-VI cross-sectional view. 高周波電極4は、例えばステンレス鋼棒材等のような導電性の真っ直ぐな金属棒により形成されており、この実施例の高周波電極4は先端が尖っていないが、先端が尖ったものであってもよく、パイプ状のもの等であってもよい。 Frequency electrode 4, for example of stainless steel rod conductivity such as material is formed by a straight metal rod, but the high-frequency electrode 4 of this embodiment is not sharp-pointed, there is the sharp pointed at best, it may be a pipe-shaped ones or the like.

そのような高周波電極4は、図7に示されるように、操作ワイヤ5の先端部分に他の連結部材を用いることなく互いの側面どうし(即ち、操作ワイヤ5の最先端部分の側面と高周波電極4の後寄りの部分の側面)を例えば銀ロー付け7等により平行の向きに直接固着して連結されている。 Such high-frequency electrode 4, as shown in FIG. 7, another aspect each other without using other connecting member to the distal end portion of the operation wire 5 (i.e., the side and the high-frequency electrode of the leading edge portion of the operation wire 5 It is connected by fixing directly parallel orientation by the sides) of the deviation of the rear portion of the 4, for example, silver soldering 7 or the like. したがって、図5に示されるように、連結部をシース1のワイヤ挿通孔2内に効率よく収容することができる。 Accordingly, as shown in FIG. 5, it can be efficiently accommodated in the wire insertion hole 2 of the connecting portion sheath 1.

そのような高周波電極4を、操作ワイヤ5の進退動作によって単純にシース1の先端から突没させると、高周波電極4の位置が振らついてしまって非常に使い難いものになってしまう場合がある。 Such a high-frequency electrode 4, there is a case where the operation is simply to project and retract from the distal end of the sheath 1 by advancing and retracting operation of the wire 5, becomes what hardly very easy to use the position of the high-frequency electrode 4 happens to have swung. そこで、高周波電極4の振らつきを規制するための電極振らつき規制部材6がワイヤ挿通孔2の最先端部分内に固着されている。 Therefore, the regulating member 6 per swung electrode for regulating with swung high-frequency electrode 4 is secured in the most advanced portion of the wire insertion hole 2.

電極振らつき規制部材6は単体の斜視図である図8にも示されるように、ワイヤ挿通孔2内にピッタリと嵌め込まれる大きさの円柱状に形成されている。 As regulating member 6 attached swung electrode is also shown in FIG. 8 is a perspective view of a single, and is formed to the size of the columnar shape are fitted and perfect the wire insertion hole 2. そして、高周波電極4が進退自在に通されて操作ワイヤ5は通ることができない径の電極ガイド孔6aが縁部付近に軸線と平行方向に形成されていて、電極ガイド孔6aに嵌挿された高周波電極4を、振らつかない状態で軸線方向にのみスムーズに進退させることができる。 Then, the electrode guide holes 6a of size frequency electrode 4 can not pass through the operation wire 5 is passed through retractably is being formed in the direction parallel to the axis near the edge was inserted into the electrode guide holes 6a the high-frequency electrode 4, can only be moved forward and backward smoothly in the axial direction in a state that does not stick shake.

この電極ガイド孔6aは、図6に示されるように、電極振らつき規制部材6がワイヤ挿通孔2の最先端部分内に嵌め込まれた状態のときにシース1と軸線が合致する位置に形成されており、その結果、電極ガイド孔6a内に位置する高周波電極4の軸線4xの位置がシース1の軸線1xの位置と一致している。 This electrode guide hole 6a, as shown in FIG. 6, the sheath 1 and the axis in a state where the regulating member 6 attached swung electrode is fitted in the leading edge portion of the wire insertion hole 2 is formed at a position that matches and which, as a result, the position of the axis 4x frequency electrode 4 located in the electrode guide hole 6a coincides with the position of the axis 1x of the sheath 1.

したがって、操作部10において操作ワイヤ5を進退操作すると、先端部分の外観図である図9に示されるように、高周波電極4がシース1の先端の軸線1x位置から前方に振らつくことなく突没し、高周波電極4の最大突出長は、図1に示されるように、操作ワイヤ5の先端が電極振らつき規制部材6の後端面に当接することにより規制される。 Therefore, when advancing and retracting operation of the operation wire 5 in the operating unit 10, as shown in FIG. 9 is an external view of a distal portion, the high-frequency electrode 4 without take swung forward from the axis 1x position of the tip of the sheath 1 project and retract and the maximum projected length of the high-frequency electrode 4, as shown in FIG. 1, the tip of the operation wire 5 is regulated by abutting the rear end surface of the restricting member 6 per swung electrode. そして、シース1の先端面の水噴出口3aからは高周波電極4の突没状態に左右されることなく水等を噴出させることができる。 Then, from the water spout 3a of the front end surface of the sheath 1 can be ejected without water or the like being left to project and retract the state of the high-frequency electrode 4.

図10〜図14は本発明の第2の実施例の内視鏡用高周波処置具を示しており、この実施例においては図10に示されるように、シース1の軸線1xがワイヤ挿通孔2から完全に外れた位置にある。 Figure 10 to 14 shows the endoscopic high-frequency treatment instrument of the second embodiment of the present invention, as shown in FIG. 10 in this embodiment, the axis 1x wire sheath 1 through holes 2 in a fully off position from.

図11に示されるように、シース1の断面形状は先端付近を除いてワイヤ挿通孔2と送水路3とが完全に独立しているが、先端付近では、図11におけるXII−XII断面を図示する図12にも示されるようにワイヤ挿通孔2と送水路3とが一つの長孔部9に集合されて、高周波電極4と操作ワイヤ5との連結部がその長孔部9内に配置されている。 As shown in FIG. 11, the cross-sectional shape of the sheath 1 and waterways 3 feed the wire insertion hole 2 with the exception of the vicinity of the tip is completely independent, in the vicinity of the distal end, illustrating the XII-XII section in FIG 11 and waterways 3 feed the wire insertion hole 2, as also shown in Figure 12 is set to one of the long holes 9, connecting portion between the high-frequency electrode 4 and the operation wire 5 is disposed in the long hole portion 9 It is.

そして電極振らつき規制部材6は、単体の斜視図である図13に示されるように、長孔部9の3分の2程度の範囲を塞ぐ形状に形成されて、電極振らつき規制部材6が長孔部9に嵌め込まれた状態のときにシース1の軸線1xと軸線位置が合致する状態に電極ガイド孔6aが電極振らつき規制部材6に貫通形成されている。 The restricting member 6 attached swung electrodes, as shown in FIG. 13 is a single perspective view, is formed in a shape to block the 2 range of about 3 minutes of the long holes 9, the regulating member 6 per swung electrode axis 1x the axis position of the sheath 1 in a state fitted in the long hole portion 9 is electrode guide holes 6a in a state that matches is formed through the regulating member 6 per swung electrode.

したがって、操作部10において操作ワイヤ5を進退操作することにより、先端部分の外観図である図14に示されるように、高周波電極4がシース1の先端の軸線1x位置から前方に振らつくことなく突没し、高周波電極4の最大突出長は、図11に示されるように、操作ワイヤ5の先端が電極振らつき規制部材6の後端面に当接することにより規制される。 Accordingly, by advancing and retracting operation of the operation wire 5 in the operating unit 10, as shown in FIG. 14 is an external view of a distal portion, without the high-frequency electrode 4 is attached swung forward from the axis 1x position of the tip of the sheath 1 and project and retract, the maximum projection length of the high-frequency electrode 4, as shown in FIG. 11, the distal end of the operation wire 5 is regulated by abutting the rear end surface of the restricting member 6 per swung electrode.

そして、シース1の先端面の水噴出口3a(長孔部9が電極振らつき規制部材6で塞がれていない部分)からは、高周波電極4の突没状態に左右されることなく水等を噴出させることができる。 Then, from the water spout 3a of the front end surface of the sheath 1 (the portion long holes 9 are not blocked by the regulating member 6 per swung electrode), water without being affected by the project and retreat state of the high-frequency electrode 4, etc. it can be ejected.

本発明の第1の実施例の内視鏡用高周波処置具の先端付近の側面断面図である。 It is a side cross-sectional view of a first embodiment near the tip of the endoscopic high-frequency treatment instrument of the present invention. 本発明の第1の実施例の内視鏡用高周波処置具の全体構成を示す平面図である。 Is a plan view showing the overall configuration of the endoscopic high-frequency treatment instrument of the first embodiment of the present invention. 本発明の第1の実施例の内視鏡用高周波処置具の全体構成を示す側面断面図である。 The overall configuration of the endoscopic high-frequency treatment instrument of the first embodiment of the present invention is a side cross-sectional view illustrating. 本発明の第1の実施例の内視鏡用高周波処置具のシースを構成するマルチルーメンチューブの軸線に垂直な断面における断面図である。 It is a cross-sectional view in a cross-section perpendicular to the axis of the multi-lumen tube constituting the sheath of the endoscopic high-frequency treatment instrument of the first embodiment of the present invention. 本発明の第1の実施例の内視鏡用高周波処置具の図1におけるV−V断面図である。 It is a sectional view taken along line V-V in Figure 1 of the endoscopic high-frequency treatment instrument of the first embodiment of the present invention. 本発明の第1の実施例の内視鏡用高周波処置具の図1におけるVI−VI断面図である。 Is a VI-VI sectional view in FIG. 1 of the endoscopic high-frequency treatment instrument of the first embodiment of the present invention. 本発明の第1の実施例の内視鏡用高周波処置具の操作ワイヤと高周波電極との連結部の斜視図である。 It is a perspective view of a connecting portion between the first embodiment endoscopic operating wire of the mirror high-frequency treatment instrument and the high-frequency electrode of the present invention. 本発明の第1の実施例の内視鏡用高周波処置具の電極振らつき規制部材の単体の斜視図である。 Is a perspective view of a single first embodiment of the endoscopic high-frequency treatment instrument of the electrode swung per regulating member of the present invention. 本発明の第1の実施例の内視鏡用高周波処置具の先端付近の外観斜視図である。 It is an external perspective view of the tip vicinity of the endoscopic high-frequency treatment instrument of the first embodiment of the present invention. 本発明の第2の実施例の内視鏡用高周波処置具のシースを構成するマルチルーメンチューブの軸線に垂直な断面における断面図である。 It is a cross-sectional view in a cross-section perpendicular to the axis of the multi-lumen tube constituting the sheath of the endoscopic high-frequency treatment instrument of the second embodiment of the present invention. 本発明の第2の実施例の内視鏡用高周波処置具の先端付近の側面断面図である。 It is a side cross-sectional view of a second embodiment near the tip of the endoscopic high-frequency treatment instrument of the present invention. 本発明の第2の実施例の内視鏡用高周波処置具の図11におけるXII−XII断面図である。 It is a XII-XII cross-sectional view in FIG. 11 of the endoscopic high-frequency treatment instrument of the second embodiment of the present invention. 本発明の第2の実施例の内視鏡用高周波処置具の電極振らつき規制部材の単体の斜視図である。 Is a perspective view of a single second embodiment of the endoscopic high-frequency treatment instrument of the electrode swung per regulating member of the present invention. 本発明の第2の実施例の内視鏡用高周波処置具の先端付近の外観斜視図である。 It is an external perspective view of the tip vicinity of the endoscopic high-frequency treatment instrument of the second embodiment of the present invention.

符号の説明 DESCRIPTION OF SYMBOLS

1 シース 1x 軸線 2 ワイヤ挿通孔 3 送水路 3a 水噴出口 4 高周波電極 4x 軸線 5 操作ワイヤ 6 電極振らつき規制部材 6a 電極ガイド孔 7 銀ロー付け 9 長孔部 10 操作部 1 sheath 1x axis 2 wire insertion hole 3 feeding canals 3a water spout 4 frequency electrode 4x axis 5 operating wire 6 electrodes swung per regulating member 6a electrode guide hole 7 silver brazed 9 elongated hole 10 operation unit

Claims (4)

  1. 内視鏡の処置具挿通チャンネルに挿脱される電気絶縁性のシース内に、上記シースの手元側からの操作によって上記シースの先端から前方に突没する針状の高周波電極と、上記シースの先端から噴出させる水を通過させるための送水路とが設けられた内視鏡用高周波処置具において、 The electrically insulating sheath that is inserted into and removed from the treatment instrument insertion channel of an endoscope, a needle-like high-frequency electrode to project and retract to the front from the front end of the sheath by an operation from the proximal side of the sheath, the sheath in endoscopic high-frequency treatment instrument that water supply channel and is provided for passing the water to be ejected from the tip,
    上記シース内に、上記高周波電極に連結された操作ワイヤが軸線方向に進退自在に挿通されるワイヤ挿通孔と上記送水路とを互いに独立して各々上記シースの軸線位置から偏心した位置に並列に形成すると共に、 In the sheath, parallel to the position where the high-frequency electrodes connected to the operation wire is decentered from each axis position of the sheath independently a wire insertion hole and the feed water channel is inserted retractably in the axial directions along with the form,
    上記高周波電極を、上記シースの軸線位置において上記シースの先端から突没するように上記操作ワイヤに対して偏心させて連結したことを特徴とする内視鏡用高周波処置具。 The RF electrodes, the endoscopic high-frequency treatment instrument, characterized in that linked by eccentric to the operation wire so as to project and retract from the distal end of the sheath in the axial position of the sheath.
  2. 上記高周波電極と上記操作ワイヤとが、他の連結部材を用いることなく互いの側面どうしを直接固着して連結されている請求項1記載の内視鏡用高周波処置具。 The high frequency electrode and the above operation wire, the endoscopic high-frequency treatment instrument of one another side each other directly secured to claim 1, which is connected without the use of other connecting members.
  3. 上記高周波電極が上記ワイヤ挿通孔の先端部分で振らつくのを規制するための電極振らつき規制部材が上記シースの先端部分に設けられている請求項1又は2記載の内視鏡用高周波処置具。 The high frequency electrode endoscopic high-frequency treatment instrument according to claim 1 or 2, wherein the electrode swung regard regulating member for regulating the Telling swung tip portion of the wire insertion hole is provided on the tip portion of the sheath .
  4. 上記電極振らつき規制部材に、上記高周波電極は通過するが上記操作ワイヤは通過しない電極ガイド孔が形成されていて、その電極ガイド孔が上記シースの軸線位置に配置される状態に上記電極振らつき規制部材が上記シースの最先端部分に固着されている請求項3記載の内視鏡用高周波処置具。 The regulating member per swung the electrodes, the high frequency electrode is but have been electrode guide holes that do not pass through the above operation wire is formed passes, the electrode guide holes per swung the electrodes in a state of being arranged in the axial position of the sheath the endoscopic high-frequency treatment instrument according to claim 3, wherein the regulating member is fixed to the leading edge portion of the sheath.
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JP4629507B2 (en) * 2005-06-09 2011-02-09 Hoya株式会社 Endoscopic high-frequency treatment instrument
US8016753B2 (en) 2005-06-09 2011-09-13 Hoya Corporation Endoscope
JP2009118891A (en) * 2007-11-12 2009-06-04 Fujinon Corp High frequency treatment instrument for endoscope
KR20130009807A (en) 2010-03-19 2013-01-23 오사카 유니버시티 Catheter for endoscope

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