JPH10155798A - Hot biopsy clamp for endoscope - Google Patents

Hot biopsy clamp for endoscope

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Publication number
JPH10155798A
JPH10155798A JP8323918A JP32391896A JPH10155798A JP H10155798 A JPH10155798 A JP H10155798A JP 8323918 A JP8323918 A JP 8323918A JP 32391896 A JP32391896 A JP 32391896A JP H10155798 A JPH10155798 A JP H10155798A
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Japan
Prior art keywords
forceps
clamp
cups
endoscope
cup
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JP8323918A
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JP3836551B2 (en
Inventor
Teruo Ouchi
輝雄 大内
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Asahi Optical Co Ltd
旭光学工業株式会社
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Priority to JP32391896A priority Critical patent/JP3836551B2/en
Publication of JPH10155798A publication Critical patent/JPH10155798A/en
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Publication of JP3836551B2 publication Critical patent/JP3836551B2/en
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Abstract

PROBLEM TO BE SOLVED: To easily and surely pinch a blood vessel, etc., at a bleeding site after a high frequency cutting of a polyp by making a maximum opening angle of a clamp cup a specified angle based on the central axis. SOLUTION: A main body 16 of a leading end part 10b of a hot biopsy clamp, is constituted of a link mechanism supporting part which is formed into a pair of parallel arm-forms, and a cylindrical part 16b which is connected to the leading end of a coil pipe 13, and at a part of the leading end side of the link mechanism supporting part 16a, a pair of clamp cups 17 are rotatably supported by a spindle 18. Then, a link mechanism 19 which open/close-drives the clamp cups 17, is arranged in the link mechanism supporting part 16a. Also, on the edge of the clamp cup 17, a plurality of grooves 17a are formed in the direction which is rectangular to the axis with proper intervals, and a maximum opening width W of the leading end of the clamp cup 17 is formed to be 2-3mm, and also, a maximum opening angle θ of the clamp cup 17 based on the central axis, is set at 10-30 deg..

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】この発明は、内視鏡用生検鉗子の鉗子カップに処置用の高周波電流を通電できるようにした内視鏡用ホットバイオプシー鉗子に関する。 TECHNICAL FIELD The present invention relates to an endoscope for hot biopsy forceps to allow a high frequency current for treatment forcep cups of the endoscope biopsy forceps.

【0002】 [0002]

【従来の技術】内視鏡用生検鉗子は、手元側からの遠隔操作により作動するリンク機構によって開閉駆動される一対の鉗子カップを先端部分に有し、内視鏡の鉗子チャンネルに挿通して使用される。 BACKGROUND ART endoscopic biopsy forceps includes a pair of forcep cups which are opened and closed by a link mechanism operated by remote control from the proximal to the distal end portion, inserted into the forceps channel of the endoscope It is used Te.

【0003】内視鏡用ホットバイオプシー鉗子は、そのような生検鉗子の鉗子カップに高周波電流を通電することにより、生検組織採取の際に傷つけられる粘膜組織を焼灼して、出血を防止できるようにしたものである。 [0003] Hot biopsy forceps endoscope, by applying a high frequency current to the forceps cups such biopsy forceps, to ablate the mucosal tissue being damaged during the biopsy tissue sampling, it is possible to prevent bleeding it is obtained by way.

【0004】 [0004]

【発明が解決しようとする課題】体腔内のポリープ切除には、導電性ワイヤによってループ状に形成されたいわゆる高周波スネアが用いられるが、高周波電流による焼灼が不十分な状態で切除が行われた場合等には、断端から出血する場合がある。 A polypectomy in the body cavity [0005] is called the high-frequency snare that is formed in a loop shape by a conductive wire is used, ablation by a high frequency current is cut in an unsatisfactory state were made the case and the like, sometimes bleeding stump.

【0005】一般に血管は粘膜面より硬いので、ポリープ切除後の断端では血管が数ミリメートル飛び出していて、そのような部分からの出血を経内視鏡的に止血する場合に、ホットバイオプシー鉗子が用いられる。 [0005] Since generally the vessel is harder than the mucosal surface, the stump after polypectomy have jumped out vessels a few millimeters, when the hemostasis bleeding from such moiety Keinai endoscopic, hot biopsy forceps used.

【0006】図11は、ポリープが切除された後の茎部101の断端に血管100の切り口が突出した状態を示しており、開かれた状態のホットバイオプシー鉗子の鉗子カップ90を先端側から見た状態である。 [0006] Figure 11 is a polyp shows a state in which the incision of the blood vessel 100 is projected to the stump of the stem portion 101 after being cut, the forcep cups 90 of the hot biopsy forceps opened state from the front end side is a state viewed.

【0007】このような状態から、一対の鉗子カップ9 [0007] From such a state, a pair of forceps cup 9
0で血管100の突出部を挟んで、その鉗子カップ90 0 across the protruding portion of the blood vessel 100, the forcep cups 90
に高周波電流を流せば、血管100の切り口部分を閉じた状態で焼灼、凝固して、止血をすることができる。 To be allowed to flow a high frequency current, cauterization with closed incision portion of the vessel 100, and solidified, it is possible to hemostasis.

【0008】止血具としては、レーザー照射を行うものや、高周波電極を押し当てるようにしたもの等もあるが、出血部位が血液で覆われていると正確な止血処置は非常に困難であり、血管100を摘んで焼灼することができる内視鏡用ホットバイオプシー鉗子は非常に安全かつ確実に止血を行うことができる。 [0008] The hemostatic device, and performs laser irradiation, there is also such that as pressing the high-frequency electrode, accurate hemostasis when the bleeding site is covered with blood is very difficult, hot biopsy forceps for an endoscope which can be cauterized picking vessel 100 can perform a very safe and reliable hemostasis.

【0009】しかし、内視鏡用ホットバイオプシー鉗子の鉗子カップは一般に90°ないし100°程度まで開く。 [0009] However, forceps cup of hot biopsy forceps for an endoscope is to not generally 90 ° open up to about 100 °. すると、図12に略示されるように、鉗子カップ9 Then, as shown schematically in FIG. 12, forcep cups 9
0で血管100を摘んだときに、鉗子カップ90の閉じ方向に血管100に加わる力Fに対して、血管100を鉗子カップ90の間から押し出す方向に加わる力f(f 0 when picked vessels 100, against the force F exerted on the blood vessel 100 in the closing direction of the forcep cups 90, a force applied in a direction to push the blood vessel 100 from between the forcep cups 90 f (f
=F. = F. tanθ)が、f≧Fと非常に大きい。 tanθ) is very large and f ≧ F. そのため、血管100が鉗子カップ90の間から滑り出して、 Therefore, the blood vessel 100 is slide out between the forceps cup 90,
うまく摘めない場合が多い。 If you do not nail successfully in many cases.

【0010】そこで本発明は、ポリープを高周波切除した後の出血部位の血管等を容易かつ確実に挟んで止血することができる内視鏡用ホットバイオプシー鉗子を提供することを目的とする。 [0010] The present invention aims at providing a hot biopsy forceps for an endoscope capable of hemostatic sandwich polyp a blood vessel or the like easily and reliably bleeding sites after RF ablation.

【0011】 [0011]

【課題を解決するための手段】上記の目的を達成するため、本発明の内視鏡用ホットバイオプシー鉗子は、高周波電源に接続されて手元側からの遠隔操作によって開閉駆動される一対の鉗子カップを先端部分に有し、内視鏡の鉗子チャンネルに挿通して使用される内視鏡用ホットバイオプシー鉗子において、上記鉗子カップの最大開き角を中心軸線に対して10°ないし30°にしたことを特徴とする。 To achieve the above object, according to an aspect of, the hot biopsy forceps for an endoscope of the present invention, a pair of forceps cups are connected to a high-frequency power source is driven to open and close by remote control from the proximal side the has a tip portion, that the hot biopsy forceps for an endoscope which is used by inserting into the forceps channel of the endoscope, and the maximum opening angle of 10 ° to 30 ° relative to the central axis of the forceps cup the features.

【0012】なお、上記一対の鉗子カップの先端の最大開き幅を2mmないし3mmの範囲にするとよく、さらに、上記鉗子カップの縁部に、歯状の凹凸が形成されていてもよい。 [0012] Incidentally, well when to not 2mm the maximum opening width of the tip of the pair of forcep cups in the range of 3 mm, further, the edge of the forcep cups, toothed irregularities may be formed.

【0013】また、上記鉗子カップの縁部の噛み合わせ面が、0.1mm〜0.5mmの幅を有しているとよい。 Further, it is preferable occlusal surfaces of edge portion of the forceps cup has a width of 0.1 mm to 0.5 mm.

【0014】 [0014]

【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。 Referring to DETAILED DESCRIPTION OF THE INVENTION The drawings will be described embodiments of the present invention. 図2は、内視鏡1を通じてホットバイオプシー鉗子10が使用される状態を示しており、ホットバイオプシー鉗子10の可撓性のあるシャフト部10a Figure 2 shows a state in which the hot biopsy forceps 10 is used through the endoscope 1, the shaft portion 10a with a flexible hot biopsy forceps 10
が内視鏡1の鉗子チャンネル1aに挿通され、ホットバイオプシー鉗子10の先端部10bで患者200の体内の患部の処置が行われる。 There is inserted into the forceps channel 1a of the endoscope 1, the treatment of the body of the affected part of the patient 200 at the distal end portion 10b of the hot biopsy forceps 10 is performed.

【0015】患者200には、接触面積の広い患者電極板3が接触させてあり、ホットバイオプシー鉗子10の手元側に設けられた操作部10cと高周波電源装置2との間、及び患者電極板3と高周波電源装置2との間は、 [0015] Patients 200, Yes, wide patient electrode plate 3 is the contact of the contact area, between the operation portion 10c and the high-frequency power supply device 2 provided on the proximal side of the hot biopsy forceps 10, and the patient electrode plate 3 between the high-frequency power supply device 2 and,
各々電気コード4,5によって接続されている。 Each is connected by an electrical cord 4,5. 6は、 6,
内視鏡1を患者電極板3と同電位にさせるためのアース用コードである。 The endoscope 1 is ground code for causing the same potential as the patient electrode plate 3.

【0016】図3はホットバイオプシー鉗子10を示しており、操作部10cに配置されたスライダー11を移動操作することにより、シャフト部10a内に進退自在に通された操作ワイヤが軸線方向に移動して、先端部1 [0016] Figure 3 shows a hot biopsy forceps 10, by moving operating the slider 11 disposed in the operation unit 10c, the operation wire inserted through retractably into the shaft portion 10a is moved in the axial direction Te, the tip 1
0bに設けられた鉗子カップが開閉する。 Forceps cups provided 0b is opened and closed.

【0017】電気コード6が接続されるコネクタ12はスライダー11に設けられていて、操作ワイヤを介して先端部10bの鉗子カップと電気的につながっている。 The connector 12 electrical cord 6 is connected to be provided to the slider 11, is connected to the electrical and the forcep cups of the front end portion 10b through the operation wire.
したがって、高周波電源装置2から先端部10bの鉗子カップに対して高周波電流が供給される。 Therefore, a high-frequency current is supplied to the forcep cups of the tip 10b from the high-frequency power supply device 2.

【0018】図4は、ホットバイオプシー鉗子10の先端部10bを示している。 [0018] Figure 4 shows the distal end portion 10b of the hot biopsy forceps 10. 13は、シャフト部10aを全長にわたって構成する密巻きコイルパイプであり、その外周面には、電気絶縁性の外皮チューブ14が被覆されている。 13 is a densely wound coil pipe constituting the entire length of the shaft portion 10a, the outer peripheral surface thereof, an electrically insulating sheathing tube 14 is covered. 15は操作ワイヤである。 15 is an operation wire.

【0019】先端部10bの本体16は、一対の平行なアーム状に形成されたリンク機構支持部16aと、コイルパイプ13の先端に連結される筒状部16bとからなっている。 The body 16 of the tip portion 10b is composed of a link mechanism supporting portion 16a formed on a pair of parallel arms shape, a cylindrical portion 16b which is connected to the distal end of the coil pipe 13.

【0020】リンク機構支持部16aの先端側の部分には、一対の鉗子カップ17が支軸18によって回転自在に支持されていて、その鉗子カップ17を開閉駆動するためのリンク機構19が、リンク機構支持部16a内に配置されている。 [0020] The distal end portion of the link mechanism supporting portion 16a, a pair of forcep cups 17 have been rotatably supported by the support shaft 18, the link mechanism 19 for opening and closing the forcep cups 17, the link It is disposed mechanism supporting portion 16a.

【0021】コイルパイプ13内に軸線方向に進退自在に挿通された操作ワイヤ15の先端は、リンク機構19 The distal end of the operation wire 15 which is movably inserted in the axial direction in the coil pipe 13, the link mechanism 19
に連結されたワイヤつなぎ20に固着されており、操作ワイヤ15が進退操作されると、リンク機構19がパンタグラフ状に作動して鉗子カップ17が開閉される。 Is fixed to the concatenated wire tie 20, when the operation wire 15 is moved back and forth, the link mechanism 19 is forcep cups 17 operated in the pantograph shape is opened and closed.

【0022】あい対向して配置された一対の鉗子カップ17の縁部には、複数の溝17aが適宜の間隔をあけて軸線と直角の方向に形成されていて、それによって、鉗子カップ17の縁部が鰐口の歯状に形成されている。 [0022] The edge of Ai opposed pair disposed forcep cups 17, a plurality of grooves 17a are not formed in the direction of the axis perpendicular at an appropriate interval, whereby the forcep cups 17 edges are formed in a tooth-like alligator.

【0023】図1は、鉗子カップ17が最大限に開かれた状態を示しており、鉗子カップ17の先端の最大開き幅Wは2mmないし3mmに形成され、中心軸線に対する鉗子カップ17の最大開き角θは10°ないし30° FIG. 1 shows a state in which the forcep cups 17 is opened maximally, the maximum opening width W of the tip of the forceps cup 17 is formed to no 2 mm 3 mm, the maximum opening of the forcep cups 17 with respect to the central axis It angle θ is not 10 ° 30 °
に設定されている。 It is set to.

【0024】図5は、血管100が鉗子カップ17に挟まれた状態を略示しており、鉗子カップ17の閉じ方向に血管100に加わる力をFとすると、f=F. [0024] Figure 5, vessel 100 is shown schematically a state sandwiched between the forcep cups 17, when the force applied to the vessel 100 in the closing direction of the forceps cups 17 and F, f = F. tan tan
θの力が、血管100を鉗子カップ17の間から押し出す方向に加わる。 Power of θ is applied in a direction to push the blood vessel 100 from between the forcep cups 17. 血管100が一対の鉗子カップ17の間から滑りださないようにするためには、fが小さい方がよい。 To the vessel 100 is prevented Dasa slipping from between the pair of forcep cups 17, better f is small.

【0025】図6は、θ=45°、θ=30°及びθ= FIG. 6 is, θ = 45 °, θ = 30 ° and theta =
15°の各々の場合の、鉗子カップ17が血管100を押圧する力Fと血管100を押し出そうとする力fを図示したものである。 In each case of 15 °, in which the forcep cups 17 are shown the force f to be extruded to force F and the vessel 100 for pressing the vessel 100.

【0026】θ=45°の場合はf=Fであり、血管1 [0026] In the case of theta = 45 ° is f = F, vascular 1
00を押し出そうとする力が大きいので、鉗子カップ1 Since the force to push out the 00 large, forceps cup 1
7で血管100を摘む際に血管100が鉗子カップ17 7 blood vessel 100 when the pluck a blood vessel 100 is forceps in the cup 17
の間から滑り出しやすい。 Easy to slide out between.

【0027】θ=30°の場合はf=0.58・Fであり、血管100を押し出そうとする力が血管100を押圧する力の58%と半分程度に減少する。 [0027] In the case of θ = 30 ° is f = 0.58 · F, a force to push out the blood vessel 100 is reduced to about 58% and half of the force to press the blood vessel 100. そして、いったん鉗子カップ17で血管100を押圧すれば、図7に示されるように、血管100は鉗子カップ17によってθ=20°程度になるまで押し潰される。 Then, once the pressing vessel 100 with forcep cups 17, as shown in FIG. 7, the vessel 100 is crushed until about theta = 20 ° by forcep cups 17.

【0028】すると、θ=20°の場合はf=0.36 [0028] Then, in the case of θ = 20 ° f = 0.36
・Fになり、血管100を押し出そうとする力は押圧力の3分の1程度まで減少する。 - becomes F, the force to push out the blood vessel 100 is reduced to about one-third of the pressing force. したがって、血管100 Therefore, the blood vessel 100
が鉗子カップ17の間から滑り出さない。 But not slide out from between the forceps cup 17.

【0029】θ=15°の場合はf=0.27・Fになり、血管100を押し出そうとする力は押圧力の4分の1近くまで減少して、血管100を鉗子カップ17の間に確実に把持することができる。 [0029] In the case of θ = 15 ° becomes f = 0.27 · F, a force to push out the blood vessel 100 is reduced to nearly a quarter of the pressing force, the blood vessel 100 of the forceps cup 17 it can be reliably gripped between.

【0030】したがって、中心軸線に対する鉗子カップ17の最大開き角θは30°以下に設定するのがよい。 [0030] Thus, the maximum opening angle θ of the forcep cups 17 relative to the central axis may be set to 30 ° or less.
ただし、θを余り小さくすると、必要な開き幅を得るのに鉗子カップ17の長さが長くなりすぎる等の不利な面が出てくるので、θは10°以上とするのがよい。 However, reducing too the theta, the length of the forcep cups 17 to obtain the opening required width comes out downside, such as too long, theta is preferably set to 10 ° or more.

【0031】図8は、ポリープが切除された後の茎部1 [0031] Figure 8, the stem portion 1 after the polyp is resected
01の断端から突出した血管100を、鉗子カップ17 The vessel 100 that protrudes from the stump 01, forcep cups 17
で摘もうとする際の状態を示しており、一対の鉗子カップ17の最大開き幅Wが3mmのもので、直径1mm程度の血管100を摘もうとする場合を例示している。 In shows a state when attempting Tsumo, but the maximum opening width W of the pair of forcep cups 17 is 3 mm, illustrates a case to be Tsumo vessels 100 having a diameter of about 1 mm.

【0032】このように、鉗子カップ17の最大開き幅が3mmを越えないようにすると、ポリープが切除された後の茎部101を鉗子カップ17で挟んでしまうことが殆どなくなり、また、鉗子カップ17と血管100との間に隙間があき過ぎないので、血管100を容易に把持することができる。 [0032] Thus, the maximum opening width of the forcep cups 17 that does not exceed 3 mm, it is no longer almost stems 101 after polyp is resected resulting sandwich in the forcep cups 17, also forcep cups because too tired gap between the 17 and the vessel 100, it is possible to easily grasp the vascular 100.

【0033】そして、出血中の血管100を鉗子カップ17で把持したら、鉗子カップ17に高周波電流を流すことによって、血管100の切り口部分を焼灼凝固して止血を行うことができる。 [0033] Then, the blood vessel 100 during bleeding Once gripped by the forceps cups 17, by flowing a high-frequency current to the forcep cups 17, it is possible to perform hemostasis by cauterizing coagulating the cut portion of the vessel 100.

【0034】血管100を一対の鉗子カップ17の間に挟み込むように狙う際には、開いた鉗子カップ17と血管100との間に、ある程度の隙間が必要である。 [0034] When aiming vessel 100 so as to sandwich between a pair of forcep cups 17 are between the forcep cups 17 and the vessel 100 opened, it requires a certain gap. 隙間が小さすぎると、血管17を摘むのが困難になる。 If the gap is too small, it becomes difficult to pick the blood vessel 17.

【0035】したがって、鉗子カップ17の最大開き幅Wは2mm以上に設定するのがよく、3mmに設定すれば、直径が2mm程度の血管100まで容易に摘むことができる。 [0035] Thus, the maximum opening width W of the forcep cups 17 may to set more than 2 mm, is set to 3 mm, can be pinched with ease diameter to vessel 100 of about 2 mm.

【0036】図9及び図10は、本発明の第2の実施の形態の内視鏡用ホットバイオプシー鉗子を示しており、 [0036] FIGS. 9 and 10 show a second embodiment of an endoscope for hot biopsy forceps of the present invention,
鉗子カップ17の先側部分の太さを細く形成したものである。 It is obtained by thin form the thickness of the tip portion of the forceps cup 17. 図10の平面部分断面図に示されるように、鉗子カップ17の縁部の噛み合わせ面17bは、例えば0. As shown in the plan partial sectional view of FIG. 10, the surface 17b meshing of the edges of the forcep cups 17, for example, 0.
1mm〜0.5mmの幅の平坦な面を有していて、摘まれる血管100を切断しないようになっている。 It has a flat surface of the width of 1Mm~0.5Mm, so as not to cut the blood vessel 100 to be picked.

【0037】なお、本発明は上記各実施の形態に限定されるものではなく、例えば鉗子カップ17には必ずしも溝17aを設けなくてもよく、使用目的等によっては、 [0037] The present invention is not limited to the foregoing embodiments, for example, may not necessarily a groove 17a in the forcep cups 17, the intended use or the like,
鉗子カップ17の縁部を鋭利に形成してもよい。 The edges of the forcep cups 17 may be sharp form.

【0038】 [0038]

【発明の効果】本発明によれば、鉗子カップの最大開き角を中心軸線に対して10°ないし30°にしたことにより、ポリープを高周波切除した後の出血部位等において、一対の鉗子カップの間に血管を挟んだ時に、血管が鉗子カップの間から滑り出し難いので、出血元の血管を容易且つ確実に摘んで止血することができる。 According to the present invention, by which the 10 ° to 30 ° relative to the central axis the maximum opening angle of the forceps cups, polyps in bleeding site or the like after the high-frequency ablation, the pair of forcep cups when sandwiching the vessel while blood vessels so hard to slide out between the forcep cups, the bleeding source vessels can be hemostasis picking easily and reliably.

【0039】また、一対の鉗子カップの先端の最大開き幅を2mmないし3mmとすることにより、ポリープの茎部に引っ掛かることなく鉗子カップで出血元の血管等をより容易かつ確実に血管を摘むことができる。 Further, to not 2mm the maximum opening width of the tip of the pair of forcep cups by a 3 mm, to pluck more easily and reliably vascular bleeding source such as a blood vessel in the forcep cups without being caught in the stem of the polyp can.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の第1の実施の形態の内視鏡用ホットバイオプシー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。 1 is a side partial cross-sectional view of a distal portion of the state of the endoscope for hot biopsy forceps of the forceps cup is opened to the first embodiment of the present invention.

【図2】本発明の第1の実施の形態の内視鏡用ホットバイオプシー鉗子が使用されるシステムの全体略示図である。 [2] First Embodiment endoscopic hot biopsy forceps of the present invention are overall substantially 示図 system used.

【図3】本発明の第1の実施の形態の内視鏡用ホットバイオプシー鉗子の全体外観図である。 Figure 3 is an overall external view of the endoscope hot biopsy forceps according to the first embodiment of the present invention.

【図4】本発明の第1の実施の形態の内視鏡用ホットバイオプシー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。 4 is a side partial cross-sectional view of a distal portion of the state in which the forceps cups endoscopic hot biopsy forceps is closed in the first embodiment of the present invention.

【図5】本発明の第1の実施の形態の機能を説明するための鉗子カップ部の略示図である。 5 is a schematic view of the forceps cup portion for explaining the function of the first embodiment of the present invention.

【図6】本発明の第1の実施の形態の機能を説明するための線図である。 6 is a diagram for explaining the function of the first embodiment of the present invention.

【図7】本発明の第1の実施の形態の機能を説明するための血管の略示断面図である。 7 is a schematic sectional view of a blood vessel for explaining the function of the first embodiment of the present invention.

【図8】本発明の第1の実施の形態の動作を説明するための被処置部の断面図である。 8 is a cross-sectional view of the treatment portion for explaining the operation of the first embodiment of the present invention.

【図9】本発明の第2の実施の形態の内視鏡用ホットバイオプシー鉗子の先端部分の側面部分断面図である。 9 is a side partial cross-sectional view of a distal portion of the endoscope for hot biopsy forceps according to the second embodiment of the present invention.

【図10】本発明の第2の実施の形態の内視鏡用ホットバイオプシー鉗子の先端部分の平面部分断面図である。 10 is a plan partial sectional view of a distal portion of the endoscope for hot biopsy forceps according to the second embodiment of the present invention.

【図11】従来の内視鏡用ホットバイオプシー鉗子の動作を説明するための被処置部の断面図である。 11 is a cross-sectional view of the treatment portion for explaining the operation of the conventional endoscope hot biopsy forceps.

【図12】従来の内視鏡用ホットバイオプシー鉗子の機能を説明するための線図である。 12 is a diagram for explaining the function of a conventional endoscope hot biopsy forceps.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 内視鏡 1a 鉗子チャンネル 2 高周波電源装置 10 ホットバイオプシー鉗子 10a シャフト部 10b 先端部 17 鉗子カップ 100 血管 1 endoscope 1a forceps channel 2 RF power supply 10 hot biopsy forceps 10a shaft portion 10b tip 17 forcep cups 100 vessels

Claims (4)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】高周波電源に接続されて手元側からの遠隔操作によって開閉駆動される一対の鉗子カップを先端部分に有し、内視鏡の鉗子チャンネルに挿通して使用される内視鏡用ホットバイオプシー鉗子において、 上記鉗子カップの最大開き角を中心軸線に対して10° 1. A is connected to a high-frequency power source has a pair of forceps cups driven to open and close by remote control from the proximal to the distal end portion, endoscopic used inserted through the forceps channel of an endoscope a hot biopsy forceps, 10 ° relative to the central axis the maximum opening angle of the forceps cup
    ないし30°にしたことを特徴とする内視鏡用ホットバイオプシー鉗子。 To hot biopsy forceps for an endoscope being characterized in that the 30 °.
  2. 【請求項2】上記一対の鉗子カップの先端の最大開き幅が2mmないし3mmである請求項1記載の内視鏡用ホットバイオプシー鉗子。 Wherein endoscope hot biopsy forceps according to claim 1, wherein a 3mm to maximum opening width of the tip of the pair of forcep cups is no 2 mm.
  3. 【請求項3】上記鉗子カップの縁部に、歯状の凹凸が形成されている請求項1又は2記載の内視鏡用ホットバイオプシー鉗子。 Wherein the edge of the forcep cups, endoscopic hot biopsy forceps according to claim 1 or 2, wherein the tooth-like irregularities are formed.
  4. 【請求項4】上記鉗子カップの縁部の噛み合わせ面が、 Wherein engagement surfaces of the edge portions of the forceps cup,
    0.1mm〜0.5mmの幅を有している請求項1、2 Claim has a width of 0.1 mm to 0.5 mm 1, 2
    又は3記載の内視鏡用ホットバイオプシー鉗子。 Or 3 endoscopic hot biopsy forceps according.
JP32391896A 1996-12-04 1996-12-04 Hot biopsy forceps for an endoscope Expired - Fee Related JP3836551B2 (en)

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