JP4629507B2 - Endoscopic high-frequency treatment instrument - Google Patents

Endoscopic high-frequency treatment instrument Download PDF

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JP4629507B2
JP4629507B2 JP2005169033A JP2005169033A JP4629507B2 JP 4629507 B2 JP4629507 B2 JP 4629507B2 JP 2005169033 A JP2005169033 A JP 2005169033A JP 2005169033 A JP2005169033 A JP 2005169033A JP 4629507 B2 JP4629507 B2 JP 4629507B2
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憲幸 杉田
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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向かって突出するように進退操作される棒状の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 rod-shaped high-frequency electrode to be moved back and forth so as to protrude from the distal end of the sheath to be inserted into and removed from the treatment instrument insertion channel of the endoscope toward the front 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に付着している汚液や血液等を切開処置前に水等で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, configured as rinse-off or the like treatment dirty solution adhering to the subject to mucosal surfaces or blood or the like before incising to is desirable.

そこで内視鏡用高周波処置具においては、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部分に、シースの手元側からの操作によってシースの先端面から前方に突出する状態に進退する高周波電極を設けると共に、シースの先端面から前方に水を噴出させるための水噴出口を設けたものがある(例えば、特許文献1)。 In endoscopic high-frequency treatment instrument Therefore, the tip portion of the sheath to be inserted into and removed from the treatment instrument insertion channel of an endoscope, forward and backward from the distal end surface of the sheath by an operation from the proximal side of the sheath in a state of projecting forward provided with a high-frequency electrodes, is that provided water spout for jetting water forwardly from the distal end surface of the sheath (e.g., Patent Document 1).
特開平6−292685 JP-A-6-292685

粘膜表面に付着している汚液や血液等を効果的に洗浄するためには、洗浄位置を適宜移動させる必要がある。 In order to effectively clean the contaminated liquids and blood and the like adhering to the mucosal surface, it is necessary to move the cleaning position as appropriate.
しかし、直径が2mm〜3mm程度しかない内視鏡用高周波処置具において水の噴出方向を可変に構成することは発想外のことで、水の噴出方向を手元側からの操作で変えるようなことはできない。 However, it outside idea that the diameter variably configure ejection direction of the water in the endoscopic high-frequency treatment instrument only about 2 mm to 3 mm, things like changing the ejection direction of the water by the operation from the proximal side can not. そのため、洗浄位置を移動させるためには内視鏡の挿入部全体を移動させる必要があるので、操作が面倒で観察視野も移動してしまう等の不都合があった。 Therefore, in order to move the cleaning position it is necessary to move the entire insertion portion of the endoscope, there is an inconvenience such as the operation will be also moved observation field cumbersome.

そこで本発明は、直径が2mm〜3mm程度しかない内視鏡用高周波処置具でも、先端の水噴出口からの水の噴出方向を可変に構成することができて、粘膜表面に付着している汚液や血液等を効果的に洗浄することができる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, in diameter at 2mm~3mm only about no endoscopic high-frequency treatment instrument, it can be variably configured the ejection direction of the water from the water spout tip, attached to the mucosal surface and to provide an endoscopic high-frequency treatment instrument that can be effectively cleaned contaminated liquids and blood and the like.

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シースの先端部分に、シースの手元側からの操作によりシースの先端面から前方に突出する状態に進退する棒状の高周波電極と、シースの先端面から前方に水を噴出させるための水噴出口とが並列に並んで配置されて、水噴出口から噴出される水がシースの先端から突出した状態の高周波電極に引き寄せられてその噴出方向が曲げられるように、高周波電極と水噴出口との間の間隔が設定され、水噴出口から水を噴出させて高周波電極を進退させることにより、水噴出口からの水の噴出方向が変化するようにしたものである。 To achieve the above object, the endoscopic high-frequency treatment instrument of the present invention, the tip portion of the sheath to be 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 tip and the rod-shaped high-frequency electrode to advance and retreat in a state protruding forward from the surface, and water spout for jetting water forwardly from the distal end surface of the sheath is arranged in parallel, the water ejected from the water spout as but its ejection direction is bent are attracted to the high-frequency electrode of the state of protruding from the distal end of the sheath, it is set distance between the high-frequency electrode and the water spout from the water spout by ejecting water frequency electrode by advancing and retracting the one in which injection direction of water from the water spout is to vary.

なお、高周波電極がシースの先端面から前方に真っ直ぐに突出し、高周波電極がシースの先端側に引っ込んだ状態では水噴出口から前方に真っ直ぐに水が噴出するようにしてもよく、高周波電極と水噴出口との間の間隔が0.5mmを越えない範囲にあるのがよく、高周波電極と水噴出口との間の間隔が0.3mm〜0.5mmの範囲にあるのが好ましい。 Note that protrudes from the distal end surface of the high-frequency electrode sheath straight forward, in the retracted state on the distal end side of the high-frequency electrode sheath may also be straight water is ejected forwardly from the water spout, high-frequency electrode and water distance between the spout well in the range not exceeding 0.5 mm, the distance between the high-frequency electrode and the water spout is preferably in the range of 0.3 mm to 0.5 mm.

また、水噴出口から噴出させる水を通すための送水路がシース内に軸線と平行方向に形成されて、送水路の断面形状が先端部分で変わることなく真っ直ぐにシースの先端面に開口して、その開口部が水噴出口になっているとよく、そのためには、シースが、複数の貫通孔が軸線方向に全長にわたって形成された可撓性のマルチルーメンチューブで形成されて、複数の貫通孔の中の一つの貫通孔が送水路になっているとよい。 Moreover, water supply path for passing water to be ejected from the water spout is formed in the axial direction parallel to the sheath, the cross-sectional shape of the water supply channel is open to the distal end surface of the straight sheath without changing the tip portion may if the opening is in the water spout. for this purpose, the sheath, a plurality of through holes are formed in the flexible multi-lumen tube formed over the entire length in the axial direction, a plurality of through may one through hole in the hole is in the water supply channel.

本発明によれば、水噴出口から水を噴出させて高周波電極を進退させることにより水噴出口からの水の噴出方向が変化するので、直径が2mm〜3mm程度しかない内視鏡用高周波処置具でも、先端の水噴出口からの水の噴出方向を可変に構成することができて、粘膜表面に付着している汚液や血液等を効果的に洗浄することができる。 According to the present invention, from the water spout by ejecting water because injection direction of water from the water spout by advancing and retracting the RF electrode changes, the high-frequency treatment for an endoscope is only about 2mm~3mm diameter in tool, may be able to variably configure ejection direction of the water from the water spout tip, effectively clean the stain adhering to the mucosal surface liquid and blood or the like.

内視鏡の処置具挿通チャンネルに挿脱されるマルチルーメンチューブ製のシースの先端部分に、シースの手元側からの操作によりシースの先端面から前方に突出する状態に進退する棒状の高周波電極と、シースの先端面から前方に水を噴出させるための水噴出口とが並列に並んで配置されて、水噴出口から噴出される水がシースの先端から突出した状態の高周波電極に引き寄せられてその噴出方向が曲げられるように、高周波電極と水噴出口との間の間隔が0.3mm〜0.5mmの範囲に設定され、水噴出口から水を噴出させて高周波電極を進退させることにより、水噴出口からの水の噴出方向が変化する。 The distal end portion of the sheath made of the multi-lumen tubes that are inserted into and removed from the treatment instrument insertion channel of an endoscope, and the rod-shaped high-frequency electrode to advance and retreat in a state protruding forward from the distal end surface of the sheath by an operation from the proximal side of the sheath , from the distal end surface of the sheath is arranged in the water spout and parallel for ejecting water to the forward water ejected from the water jet outlet are attracted to the high-frequency electrode state of protruding from the distal end of the sheath as the ejection direction is bent, the distance between the high frequency electrode and the water spout is set in a range of 0.3 mm to 0.5 mm, from the water spout by ejecting water by advancing and retracting the radio frequency electrode , injection direction of water from the water spout is changed.

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5と図6は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1m〜2m程度に形成されている。 Figure 5 and Figure 6 is a plan view and a side sectional view showing an overall configuration of an endoscopic high-frequency treatment instrument, for example, from an electrically insulating synthetic resin flexible tube such as tetrafluoroethylene resin sheath 1 made, as is detachably the treatment instrument insertion channel of an endoscope not shown, diameter length of about 2mm are formed in approximately 1 m to 2 m.

シース1は、図8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真っ直ぐ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た位置に、各々全長にわたって一定の径で形成されている。 The sheath 1, as cross-section is shown in Figure 8, two through-holes of the channel 3 feed the wire insertion hole 2 is a so-called multi-lumen tube formed in parallel straight in the axial direction, the wire insertion hole 2 the feed axis position of the channel 3 is eccentric to any position in the axial 1x sheath 1 position, are formed at a constant diameter across each entire length. 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5及び図6に戻って、シース1の先端には、棒状の高周波電極4がシース1の先端面1aから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. 5 and FIG. 6, the distal end of the sheath 1, the high-frequency electrode 4 of the rod-shaped are arranged to freely project and retract from the distal end surface 1a of the sheath 1, an operation for projecting and retracting operation of the high-frequency electrode 4 part 10 is the base end side of the sheath 1 (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 .

高周波電極4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 high-frequency electrode 4 is connected to the operating unit sliding operation member 12 provided slid freely with respect to the 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7はシース1の先端付近を示しており、図9はそのIX−IX断面図、図10はX−X断面図である。 Figure 7 shows the vicinity of the distal end of the sheath 1, Figure 9 is the sectional view taken along line IX-IX, FIG. 10 is a sectional view taken along line X-X. 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11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. 11, 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9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. 9, 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にく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, it becomes what very difficult 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12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. 12 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10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. 10, 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13に示されるように、高周波電極4がシース1の先端面1aの軸線1x位置から前方に振らつくことなく真っ直ぐに突没し、高周波電極4の最大突出長は、図7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. 13 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 face 1a of the sheath 1 straight to project and retract, the maximum projection length of the high-frequency electrode 4, as shown in FIG. 7, the distal end of the operation wire 5 is regulated by abutting the rear end surface of the restricting member 6 per swung electrode.

そのように構成された内視鏡用高周波処置具の水噴出口3aは、送水路3の先端部分に口金等を設けることなく、したがって送水路3の断面形状のままシース1の先端面1aに開口形成されたものであり、高周波電極4の突没状態に関係なく水を噴出させることができる。 Water spout 3a so constructed endoscopic high-frequency treatment instrument, feed without providing a die or the like to the distal end portion of the channel 3, thus leaving the sheath 1 tip face 1a of the cross-sectional shape of the water supply channel 3 has been formed open, can be ejected water regardless protruding and retracting state of the high-frequency electrode 4.

図2は、高周波電極4がシース1の先端内に引っ込められた状態で水噴出口3aから噴出水Wが噴出している状態を示しており、噴出水Wは送水路3の径をそのまま維持した状態で真っ直ぐに前方に向かって噴出する。 Figure 2 is a high-frequency electrode 4 shows a state in which jet water W from the water spout 3a while being retracted into the distal end of the sheath 1 is ejected, maintaining the diameter of the jet water W is fed waterway 3 straight ejected toward the forward state.

特に、シース1がマルチルーメンチューブで形成されていて送水路3には径変化がなく、送水路3の断面形状が先端部分で全く変わることなく真っ直ぐに水噴出口3aで開口しているので、噴出水Wが長い距離にわたって広がったりせず円柱状の状態を維持する。 In particular, the sheath 1 is no diameter change in the water supply passage 3 be formed in a multi-lumen tube, the cross-sectional shape of the feed water channel 3 is opened with straight water spout 3a without completely changed at the tip portion, jetting water W to maintain the cylindrical state without or spread over a long distance. したがって、粘膜表面の汚物や血液等を強力に洗浄することができる。 Therefore, it is possible to strongly cleaned mucosal surface dirt, blood and the like.

図1は、高周波電極4をシース1の先端面1aから突出させた状態で水噴出口3aから噴出水Wが噴出している状態を示しており、水噴出口3aから噴出される噴出水Wが、シース1の先端面1aから突出した状態の高周波電極4に引き寄せられて噴出水Wの噴出方向が高周波電極4側に折れ曲がった状態になっている。 Figure 1 is ejected water W ejected water W from the water spout 3a in a state of protruding a high-frequency electrode 4 from the distal end surface 1a of the sheath 1 shows a state in which the ejection, ejected from the water spout 3a but in a state in which ejection direction is bent to the high frequency electrode 4 side of the high-frequency electrode 4 attracted by jetting water W in a state of protruding from the distal end surface 1a of the sheath 1.

図1と図2はいずれも現物を写真撮影したものをそのまま図面化したものであり、図2に示されるように噴出水Wが高周波電極4に引き寄せられて噴出方向が曲げられても、噴出水Wは前方に真っ直ぐに噴出する場合と変わらない円柱状を保っていて周囲に広がった状態にならない。 Figures 1 and 2 is obtained by directly drawing the ones in which the zoom photographed kind, even jetting water W is jetted direction bent attracted to the high-frequency electrode 4 as shown in FIG. 2, the ejection water W is not a state in which spread around and has maintained a cylindrical unchanged to the case of straight ejected forward.

したがって、この場合でも粘膜表面の汚物や血液等を強力に洗浄することができ、本発明により、直径が2mm〜3mm程度しかない内視鏡用高周波処置具でも、噴出水Wの噴出方向を確実に変化させることができる。 Therefore, in this case even be able to strongly washed filth and blood such mucosal surfaces, the present invention, even in the endoscopic high-frequency treatment instrument is only about 2mm~3mm diameter, ensures ejection direction of the water jet W it is possible to change to.

このように、水噴出口3aの前方を遮ることなく噴出水Wの本来の噴出方向に対して平行に高周波電極4を突出させることにより噴出水Wが高周波電極4に引き寄せられて曲がるのは、高周波電極4と平行に流体(噴出水W)が流れることによりその間の空間が負圧になって噴出水Wが高周波電極4側に寄せられ、それによって噴出水Wが高周波電極4に触れると、その後は水の表面張力により噴出水Wが高周波電極4にくっついた状態になることによると思われる。 Thus, the jetting water W by making parallel protrude frequency electrode 4 with respect to the original ejection direction of the ejection water W without interrupting the forward water spout 3a bends are attracted to the high-frequency electrode 4, jetting water W is attracted to the high-frequency electrode 4 side frequency electrode 4 in parallel with the fluid (water jet W) is the space between them by flow becomes negative pressure, whereby the water jet W touches the high-frequency electrode 4, then seems to be due to a state where water jet W is stuck to the high-frequency electrode 4 by the surface tension of water. なお、噴出水Wの曲がり角度は5°〜30°程度の範囲である。 Incidentally, bending angle of the jetting water W is in the range of about 5 ° to 30 °.

図3及び図4は、高周波電極4と水噴出口3aとの間の間隔eを変化させた場合に、先端面1aからの高周波電極4の突出長Lをどの程度にすると噴出水Wが曲がるかを実験したときの実験結果を示しており、高周波電極4の直径dはd=0.33mm、水噴出口3aの直径DはD=0.5mmである。 3 and 4, in the case of changing the distance e between the high frequency electrode 4 and the water spout 3a, jetting water W is bent and to what extent the projection length L of the high-frequency electrode 4 from the distal end surface 1a It shows the experimental results when the experiment or the diameter d of the high-frequency electrode 4 d = 0.33 mm, the diameter D of the water spout 3a is D = 0.5 mm.

この実験結果から、高周波電極4と水噴出口3aとの間の間隔eが0.5mmを越えない(e≦0.5mm)範囲にある必要があり、eが0.25mm以下では噴出水Wの状態が不安定で高周波電極4をほとんど突出させなくても噴出水Wが曲がったりするので、高周波電極4と水噴出口3aとの間の間隔eは0.3mm〜0.5mmの範囲に設定するのが望ましい。 From the experimental results, the spacing e between the high frequency electrode 4 and the water spout 3a does not exceed 0.5 mm (e ≦ 0.5 mm) must be in the range, e is ejected water W is 0.25mm or less since the state is also bent or jet water W not protrude little unstable frequency electrode 4, spacing e between the high frequency electrode 4 and the water spout 3a is in the range of 0.3mm~0.5mm setting it is desirable to.

なお、本発明は上記実施例に限定されるものではなく、例えば、高周波電極4はシース1側に引っ込められた状態のときに必ずしもシース1内に完全に没入する必要はなく、噴出水Wの噴出方向を曲げない範囲まで引っ込められればよい。 The present invention is not limited to the above embodiments, for example, high-frequency electrode 4 need not be fully retracted necessarily within the sheath 1 when the state of being retracted into the sheath 1 side, the water jet W only to be retracted to the extent that does not bend the ejection direction.

本発明の実施例の内視鏡用高周波処置具の噴出水が曲がった状態の斜視図である。 It is a perspective view showing a state in which jet water is bent endoscopic high-frequency treatment instrument embodiment of the present invention. 本発明の実施例の内視鏡用高周波処置具の噴出水が真っ直ぐな状態の斜視図である。 Jetting water endoscopic high-frequency treatment instrument embodiment of the present invention is a perspective view of a straight state. 本発明の実施例の高周波電極と水噴出口との間の間隔と先端面から噴出する噴出水の曲がり発生との関係を明らかにする実験に用いられた内視鏡用高周波処置具先端部分の斜視図である。 Spacing the tip endoscopic high-frequency treatment instrument used to reveal experimentally the relationship between the bending occurrence of jetting water jetting from the surface the tip portion between the high-frequency electrode and the water spout embodiment of the present invention it is a perspective view. 本発明の実施例の高周波電極と水噴出口との間の間隔と先端面から噴出する噴出水の曲がり発生との関係を明らかにする実験の実験結果を示す図表である。 Is a table showing experimental results reveal experiments the relationship between the bending occurrence of jetting water jetting from the interval and the tip surface between the high-frequency electrode and the water spout embodiment of the present invention. 本発明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。 The overall configuration of the endoscopic high-frequency treatment instrument embodiment of the present invention is a plan view showing. 本発明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。 It is a side sectional view showing the overall configuration of the endoscopic high-frequency treatment instrument embodiment of the present invention. 本発明の実施例の内視鏡用高周波処置具の先端部分の側面断面図である。 It is a side sectional view of a distal portion of the endoscopic high-frequency treatment instrument embodiment of the present invention. 本発明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。 To the axis of the multi-lumen tube constituting the sheath of the endoscopic high-frequency treatment instrument of the embodiment of the present invention is a cross-sectional view in a cross section perpendicular. 本発明の実施例の内視鏡用高周波処置具の図7におけるIX−IX断面図である。 Is a sectional view taken along line IX-IX in FIG. 7 of the endoscopic high-frequency treatment instrument embodiment of the present invention. 本発明の実施例の内視鏡用高周波処置具の図7におけるX−X断面図である。 It is a sectional view taken along line X-X in Figure 7 of the endoscopic high-frequency treatment instrument embodiment of the present invention. 本発明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 operation wire and the high-frequency electrode of the endoscopic high-frequency treatment instrument embodiment of the present invention. 本発明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 electrode swung per regulating member of the endoscopic high-frequency treatment instrument of the embodiment of the present invention. 本発明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 vicinity of the distal end of the endoscopic high-frequency treatment instrument of the embodiment of the present invention.

符号の説明 DESCRIPTION OF SYMBOLS

1 シース 1a 先端面 3 送水路 3a 水噴出口 4 高周波電極 e 高周波電極と水噴出口との間の間隔 W 噴出水 Interval W jetting water between 1 sheath 1a tip surface 3 feed water channel 3a water spout 4 frequency electrode e frequency electrode and the water spout

Claims (5)

  1. 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部分に、上記シースの手元側からの操作により上記シースの先端面から前方に突出する状態に進退する棒状の高周波電極と、上記シースの先端面から前方に水を噴出させるための水噴出口とが並列に並んで配置されて、 The distal end portion of the sheath to be inserted into and removed from the treatment instrument insertion channel of an endoscope, and the rod-shaped high-frequency electrode to advance and retreat in a state protruding forward from the distal end surface of the sheath by an operation from the proximal side of the sheath, the sheath from the distal end surface and a water spout for ejecting water to the front they are arranged in parallel,
    上記水噴出口から噴出される水が上記シースの先端から突出した状態の上記高周波電極に引き寄せられてその噴出方向が曲げられるように、上記高周波電極と上記水噴出口との間の間隔が0.5mmを越えない範囲に設定され、 As the water ejected from the water jet port its ejection direction is bent are attracted to the high-frequency electrode of the state of protruding from the distal end of the sheath, the distance between the high frequency electrode and the water spout is 0 is set in a range that does not exceed the .5mm,
    上記水噴出口から水を噴出させて上記高周波電極を進退させることにより、上記水噴出口からの水の噴出方向が変化するようにしたことを特徴とする内視鏡用高周波処置具。 By advancing and retracting the radio frequency electrode by ejecting water from the water spout endoscopic high-frequency treatment instrument, wherein the injection direction of water from the water spout is to vary.
  2. 上記高周波電極が上記シースの先端面から前方に真っ直ぐに突出し、上記高周波電極が上記シースの先端側に引っ込んだ状態では上記水噴出口から前方に真っ直ぐに水が噴出する請求項1記載の内視鏡用高周波処置具。 The high-frequency electrode is straight protrudes forward from the distal end surface of the sheath, the endoscope according to claim 1, wherein said high-frequency electrode to straight jet water forwardly from the water jets in the retracted state on the distal end side of the sheath mirror for high-frequency treatment instrument.
  3. 上記高周波電極と上記水噴出口との間の間隔が0.3mm〜0.5mmの範囲にある請求項1又は2記載の内視鏡用高周波処置具。 The high frequency electrode and the endoscopic high-frequency treatment instrument according to claim 1 or 2, wherein the interval is in the range of 0.3mm~0.5mm between the water spout.
  4. 上記水噴出口から噴出させる水を通すための送水路が上記シース内に軸線と平行方向に形成されて、上記送水路の断面形状が先端部分で変わることなく真っ直ぐに上記シースの先端面に開口して、その開口部が上記水噴出口になっている請求項1ないしのいずれかの項に記載の内視鏡用高周波処置具。 Water supply path for passing water to be ejected from the water spout is formed in the direction parallel to the axis within the sheath, the opening in the distal end surface of the straight the sheath without the cross-sectional shape of the water supply channel is changed at the tip portion to, endoscopic high-frequency treatment instrument according to any one of claims 1 to 3 the opening is in the water spout.
  5. 上記シースが、複数の貫通孔が軸線方向に全長にわたって形成された可撓性のマルチルーメンチューブで形成されて、上記複数の貫通孔の中の一つの貫通孔が上記送水路になっている請求項記載の内視鏡用高周波処置具。 Claims the sheath, a plurality of through holes are formed in the flexible multi-lumen tube formed over the entire length in the axial direction, one through hole in the plurality of through-holes is in the water supply channel the endoscopic high-frequency treatment instrument of claim 4, wherein.
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Publication number Priority date Publication date Assignee Title
JPH10165359A (en) * 1996-12-12 1998-06-23 Asahi Optical Co Ltd Treatment appliance for endoscope
JP2003024346A (en) * 2001-07-18 2003-01-28 Pentax Corp High-frequency incising tool for endoscope
JP2003153851A (en) * 2001-11-21 2003-05-27 Pentax Corp Endoscope
JP2004275548A (en) * 2003-03-18 2004-10-07 Pentax Corp Beak-like treatment instrument for endoscope
JP2004313537A (en) * 2003-04-17 2004-11-11 Olympus Corp Diathermic knife
JP2006187475A (en) * 2005-01-07 2006-07-20 Pentax Corp High frequency treating implement for endoscope
JP2006187474A (en) * 2005-01-07 2006-07-20 Pentax Corp High frequency treating implement for endoscope

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10165359A (en) * 1996-12-12 1998-06-23 Asahi Optical Co Ltd Treatment appliance for endoscope
JP2003024346A (en) * 2001-07-18 2003-01-28 Pentax Corp High-frequency incising tool for endoscope
JP2003153851A (en) * 2001-11-21 2003-05-27 Pentax Corp Endoscope
JP2004275548A (en) * 2003-03-18 2004-10-07 Pentax Corp Beak-like treatment instrument for endoscope
JP2004313537A (en) * 2003-04-17 2004-11-11 Olympus Corp Diathermic knife
JP2006187475A (en) * 2005-01-07 2006-07-20 Pentax Corp High frequency treating implement for endoscope
JP2006187474A (en) * 2005-01-07 2006-07-20 Pentax Corp High frequency treating implement for endoscope

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