JPH11169381A - High frequency treating device - Google Patents

High frequency treating device

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Publication number
JPH11169381A
JPH11169381A JP9344729A JP34472997A JPH11169381A JP H11169381 A JPH11169381 A JP H11169381A JP 9344729 A JP9344729 A JP 9344729A JP 34472997 A JP34472997 A JP 34472997A JP H11169381 A JPH11169381 A JP H11169381A
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JP
Japan
Prior art keywords
electrode
portion
tissue
operation
needle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP9344729A
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Japanese (ja)
Inventor
Kenji Harano
Koji Iida
Yasuhiko Kikuchi
Koji Yamauchi
健二 原野
幸治 山内
康彦 菊地
浩司 飯田
Original Assignee
Olympus Optical Co Ltd
オリンパス光学工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Olympus Optical Co Ltd, オリンパス光学工業株式会社 filed Critical Olympus Optical Co Ltd
Priority to JP9344729A priority Critical patent/JPH11169381A/en
Publication of JPH11169381A publication Critical patent/JPH11169381A/en
Application status is Withdrawn legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To provide a high frequency treating device which achieves a shortening of operation time by enabling the grasping, peeling, coagulating and incising of a tissue with one treating device to reduce troublesomeness with limited frequency of changes in treating devices during the operation.
SOLUTION: There are an inserting part which comprises an outer sheath and an inner sheath 6 inserted into the outer sheath axially free to adverse or retract and an operating part on the hand side of the inserting part. Grasping members 11a and 11b and a needle-shaped electrode 19 are arranged at the tip part of the inserting part to grasp, peel or coagulate a tissue by the operation of the operating part. In a high frequency treating device of such a type, the operating part is provided with a needle-shaped electrode operating means to incise the tissue protruding a forceps operating means to open or close the grasping members 11a and 11b and the needle-shaped electrode 19 from the tip part of the inserting part.
COPYRIGHT: (C)1999,JPO

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、生体の体腔内に挿入し、組織を把持、剥離、凝固及び切開することができる高周波処置具に関する。 TECHNICAL FIELD The present invention is inserted into a body cavity of a living body, tissue grasping, peeling, it relates to a high-frequency treatment instrument capable of coagulation and incision.

【0002】 [0002]

【従来の技術】一般に、生体組織を把持する一対の把持部材を備え、各把持部材に高周波通電用の電極が配設されたバイポーラ鉗子が知られている。 In general, comprises a pair of gripping members for gripping the body tissue, the bipolar forceps having electrodes arranged for high-frequency current is known in the gripping member. そして、このバイポーラ鉗子の使用時には一対の把持部材間に処置対象の生体組織を把持させた状態で、各把持部材の電極間に高周波電流を通電して把持部材間の生体組織を凝固させるようになっている。 As this is the use of a bipolar forceps while being gripped treatment target living tissue between a pair of gripping members, to coagulate the living tissue between the grasping member and a high-frequency current between the electrodes of each gripping member going on.

【0003】この種のバイポーラ鉗子は、通常、生体組織に含まれる血管の止血、生体組織の表層の病変部、出血点の焼灼、避妊を目的とした卵管の閉塞等の多種の症例に用いられる。 [0003] This type of bipolar forceps, usually used, hemostasis of the blood vessel contained in a biological tissue, lesion of the surface layer of the living tissue, cauterization of the bleeding point, the various cases of clogging tubal intended for contraception It is. そして、バイポーラ鉗子が血管の止血や、卵管の閉塞を目的として用いられ、患者の処置対象の生体組織を凝固できるようになっており、また凝固した生体組織を切開することができるようになっている。 The hemostatic and bipolar forceps vessel, used for the purpose of occlusion of fallopian tube, making it possible to incise the are adapted to be coagulate patient treatment target living tissue, also coagulated biological tissue ing.

【0004】従来、この種の内視鏡下高周波処置具としては、例えばDE3423356C2、DE40324 Conventionally, as endoscopic high-frequency treatment instrument of this kind, for example DE3423356C2, DE40324
71C2、DE4138116A1等で知られている。 71C2, known in DE4138116A1 like.
DE3423356 C2は、挿入部の先端部に組織を把持することができるピンセット等の電極及び切開用電極が設けられており、両電極の先端間に高周波電流を流して凝固でき、また切開用電極で組織を切開できるようになっている。 DE3423356 C2 is provided an electrode and incising electrode such as forceps can grip the tissue to the distal end of the insertion portion, can be coagulated by applying a high-frequency current between the two electrode tips, and in incising electrode It has to be able to cut tissue.

【0005】DE4032471 C2は、挿入部の先端部に2つの凝固電極と1つの切断電極を有し、組織の凝固と切断を行うことができ、操作部には凝固と切断を切替える切替えスイッチを備えている。 [0005] DE4032471 C2 has two coagulation electrodes and one cutting electrode at the distal end of the insertion portion, it is possible to perform coagulation and cutting of tissue, the operation unit includes a changeover switch switches the solidified cutting ing.

【0006】DE4138116 A1は、挿入部の先端部にフック形状の固定式凝固用電極と菱形ワイヤからなる1つの可動式切除用電極を有し、凝固用電極と切除用電極の間で組織を把持し、切除電極を前進させて組織の切除を行うようになっている。 [0006] DE4138116 A1 has one movable ablation electrode at the distal end portion of the insertion portion made of fixed coagulation electrode and rhombic wire hook-shaped, grasping tissue between the coagulation electrode and the ablation electrode and it is adapted to perform ablation of tissue by advancing the ablation electrode.

【0007】 [0007]

【発明が解決しようとする課題】しかしながら、前述したDE3423356 C2は、ピンセット等の電極の先端のみの狭い面積での凝固であり、広範囲な組織の凝固ができないとともに、組織を把持して凝固したり、組織を剥離することはできない構造である。 [SUMMARY OF THE INVENTION However, DE3423356 C2 described above is coagulated in a narrow area of ​​only the tip of the electrode such as tweezers, with can not be solidified extensive tissue or coagulated by grasping tissue , the structure can not be peeled off the tissue. また、DE4 In addition, DE4
032471 C2は、凝固電極と切断電極が棒状体であり、凝固電極相互間及び凝固電極と切断電極相互間の間隔が決まっているため、広域の凝固、細かい凝固操作及び組織の剥離操作を行うことができない。 032471 C2 is solidified electrode and the cutting electrode is a rod-like body, since the distance between the coagulation electrodes and between the coagulation electrode cutting electrode cross is predetermined, to perform the peeling operation of the wide area of ​​solidification, a fine solidification operation and tissues can not. また、組織を切断することは可能であるが、組織を切開することはできない。 Further, it is possible to cut the tissue, it is impossible to cut tissue. さらに、DE4138116 A1は、凝固用電極が固定されているため、前述と同様に、広域の凝固、細かい凝固操作及び組織の剥離操作を行うことができないとともに、組織を切断することは可能であるが、 Further, DE4138116 A1, since the coagulation electrode is fixed, in the same manner as described above, a wide area of ​​coagulation, with can not perform the peeling operation of the fine solidification operation and tissue, it is possible to cut the tissue ,
組織を切開することはできない。 It is not possible to cut tissue.

【0008】この発明は、前記事情に着目してなされたもので、その目的とするところは、組織の把持、剥離、 [0008] This invention has been made in view of the above circumstances, it is an object of grasping tissue, peeling,
凝固及び切開が1つの処置具で行うことができ、手術時に処置具の交換を少なくして煩わしさを軽減でき、手術時間の短縮を図ることができ、また、比較的広い範囲の組織の凝固と組織を把持して細かい凝固操作及び剥離を行うことができる高周波処置具を提供することにある。 Coagulation and incision can be done in one treatment instrument, to reduce the exchange of the treatment instrument can reduce the burden to the time of surgery, shortening of operation time can be achieved, also, a relatively wide range of tissue coagulation and to provide a high-frequency treatment instrument that tissue can be performed grasped by a fine solidification operation and peeled off with.

【0009】 [0009]

【課題を解決するための手段】この発明は、前記目的を達成するために、挿入部及び挿入部の手元側に操作部を有し、前記挿入部の先端部に前記操作部の操作により組織を把持、剥離、凝固を行うための一対の把持部材及び切開を行うための針状電極を有した高周波処置具において、前記操作部に前記一対の把持部材を開閉する鉗子操作手段及び前記針状電極を挿入部の先端部より進退させ、組織を切開する針状電極操作手段を設けたことを特徴とする高周波処置具にある。 SUMMARY OF THE INVENTION The present invention is organized to achieve the object, an operation unit at hand side of the insertion portion and the insertion portion, by the operating portion of the operating the distal end of the insertion portion gripping, peeling, in the high-frequency treatment instrument having a needle electrode for performing a pair of gripping members and cutting for performing coagulation forceps operating means and the needle for opening and closing the pair of grip members to the operating unit the electrode was advanced and retracted from the distal end of the insertion section, in the high-frequency treatment instrument, characterized in that a needle electrode operating means for cutting tissue.

【0010】そして、組織の凝固止血等の処置時に鉗子によって組織を把持した状態で把持部間に凝固電流を流して組織を凝固させ、また、鉗子と針状電極との間に切開電流を流して組織を切開することができるようにしたものである。 [0010] Then, when the treatment of coagulation hemostasis, either tissue by passing a coagulation current between the grip portion in a state of gripping the tissue by forceps to coagulate tissue, also passed an incision current between the forceps and the needle electrode it is obtained to be able to cut tissue Te.

【0011】 [0011]

【発明の実施の形態】以下、この発明の各実施の形態を図面に基づいて説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, will be explained with reference to the embodiments of the invention with reference to the drawings.

【0012】図1〜図4は第1の実施形態を示し、図1 [0012] 1 to 4 show a first embodiment, FIG. 1
は内視鏡下手術器械としての高周波処置具の全体構成図である。 Is an overall configuration diagram of a high-frequency treatment instrument as an endoscopic surgical instruments. 図1に示すように、高周波処置具としてのバイポーーラ鉗子1には患者の体腔内に挿入される細長い挿入部2と、この挿入部2の先端部に配置され、体腔内で生体組織を把持、剥離、凝固するための通電可能な処置部3と、挿入部2の基端部に連結された操作部4とが設けられている。 As shown in FIG. 1, gripping the Baipora forceps 1 as a high-frequency treatment instrument with an elongated insertion section 2 inserted into a body cavity of a patient, is disposed at the distal end of the insertion portion 2, the living tissue in a body cavity, peeling, and energizable treatment unit 3 for solidifying, an operation unit 4 which is connected is provided at the proximal end of the insertion portion 2.

【0013】挿入部2は、外シース5と、この外シース5の内部に軸方向に進退自在に挿入された内シース6とからなり、外シース5の基端部は操作部4を構成するグリップ7に固定され、内シース6の基端部は操作部4に設けられた内シース駆動部材8に固定されている。 [0013] insertion portion 2 includes an outer sheath 5, the inside of the outer sheath 5 made among sheath 6 that are inserted movably in the axial direction, the base end portion of the outer sheath 5 constituting the operation section 4 is fixed to the grip 7, the base end portion of the inner sheath 6 is fixed to the sheath drive member 8 within which is provided on the operation unit 4.

【0014】処置部3には内シース6に内挿される細長いロッド10が設けられている。 [0014] an elongated rod 10 which is inserted into the inner sheath 6 is provided to the treatment portion 3. このロッド10の先端部には電極を構成する把持部としての一対の把持部材1 A pair of gripping members as a gripper thereof constituting the electrode on the distal end of the rod 10 1
1a,11bと、これらの把持部材11a,11bを拡開させる方向に付勢する弾性部材12a,12bとが設けられている。 1a, a 11b, these gripping members 11a, elastic member 12a for urging in a direction to spread apart the 11b, and the 12b are provided. 弾性部材12a,12bはばね鋼等によって形成され、先端部には略くの字状に屈曲された屈曲部13a,13bが形成され、弾性部材12a,12b Elastic members 12a, 12b are formed by a spring steel or the like, the tip bent portion 13a which is bent to the shape of the substantially L, 13b are formed, elastic members 12a, 12b
の表面は絶縁材14a,14bによって被覆されている。 The surface is coated insulation 14a, by 14b.

【0015】図2に示すように、把持部材11a,11 [0015] As shown in FIG. 2, the gripping member 11a, 11
bは閉じたときに互いに噛合する鋸歯状部が形成され、 b is serrations which mesh with one another when closed is formed,
生体組織Aを確実に把持できるように形成されている。 The biological tissue A is formed so as to be securely grasped.
把持部材11a,11bの噛合部における幅方向の中間部には前後方向に互いに対向する半円形の凹陥部15が設けられ、これら凹陥部15によって把持部材11a, Gripping member 11a, a semicircular recess 15 is provided opposite to each other in the longitudinal direction in the middle portion in the width direction of the engagement portion of 11b, gripping member 11a by these recess 15,
11bは閉じたときに挿通路16が形成される。 11b is insertion path 16 is formed when closed.

【0016】さらに、内シース6の軸心部には内シース6の全長に亘って貫通路17が形成され、この貫通路1 Furthermore, through passage 17 to the axial center of the inner sheath 6 along the entire length of the inner sheath 6 is formed, the through passage 1
7には先端部を残し、全長に亘って絶縁チューブ18によって被覆された針状電極19が軸方向に進退自在に挿通されている。 7 leaving the tip, the needle-like electrode 19 which is covered by an insulating tube 18 over the entire length is inserted retractably in the axial direction. すなわち、針状電極19の先端部は把持部材11a,11bが閉じたときに形成される挿通路1 That is, the insertion path 1 tip of the needle-like electrode 19 that is formed when the gripping members 11a, 11b are closed
6を貫通して把持部材11a,11bの先端部から突出可能に形成されている。 Gripping member 11a a 6 penetrates, and is projectable formed from the tip of 11b.

【0017】このように構成された処置部3の把持部材11a,11bのロッド10及び針状電極19は前記挿入部2を構成する内シース6に内挿されており、ロッド10及び針状電極19は内シース6の基端部から突出して操作部4まで延長している。 The gripping member 11a of the treatment section 3 configured as described above, the rod 10 and the needle electrode 19 and 11b are inserted into the sheath 6 inside which constitutes the insertion portion 2, the rod 10 and the needle electrode 19 is extended to protrude from the proximal end of the inner sheath 6 to the operating section 4.

【0018】また、図1に示すように、操作部4のグリップ7には先端部側に延出された先端側延出部20が設けられている。 Further, as shown in FIG. 1, the grip 7 of the operation section 4 the distal end side extending portion 20 that extends to the distal end side. この先端側延出部20には外シース5の基端部に連結固定される連結リング21が設けられている。 This distally extending portion 20 connecting ring 21 which is fixedly connected to the proximal end of the outer sheath 5 is provided. さらに、先端側延出部20の後方には処置部3の後端部と電気、機械的に接続するための処置部ユニット接続部22が配設されている。 Furthermore, the electrical and the rear end portion of the treatment portion 3, the treatment section unit connecting section 22 for mechanically connecting is disposed in the rear of the front end side extending portion 20. ここで、処置部ユニット接続部22には処置部3のロッド10の後端部を収納する内腔と、この内腔に収納したロッド10の後端部に接続される接続手段とが設けられている。 Here, a lumen for housing the rear end portion of the rod 10 of the treatment portion 3 to the treatment portion unit connection part 22, and a connecting means connected to the rear end portion of the rod 10 housed in the lumen is provided ing. また、処置部ユニット接続部22にはケーブル接続部23が設けられ、このケーブル接続部23は接続ケーブルを介して高周波焼灼電源装置(図示しない)に接続される。 Also, the treatment section unit connection part 22 cable connecting portion 23 is provided, the cable connecting portion 23 is connected to the high-frequency cautery power source device (not shown) via a connection cable.

【0019】また、グリップ7には鉗子操作手段としてのトリガー24が設けられている。 [0019] In addition, the trigger 24 as a forceps operation means is provided on the grip 7. このトリガー24はグリップ7の上端部に回動ピン25を中心に回動自在に連結されている。 The trigger 24 is pivotally connected to the centered pivot pin 25 to the upper end of the grip 7. さらに、このトリガー24には回動支点の上方に長孔26が形成されている。 Further, the elongated hole 26 is formed above the rotational fulcrum to the trigger 24. この長孔26は内シース駆動部材8の側面に突設された係合ピン27が挿入されている。 The long hole 26 engages the pin 27 is inserted protruding from the side surface of the inner sheath driving member 8.

【0020】また、グリップ7の内部にはトリガー24 [0020] In addition, the inside of the grip 7 trigger 24
の下端部の手掛け部24aをグリップ7から離れる方向(図1において回動ピン25を中心に時計回り方向)に付勢する付勢部材(図示しない)が配設されている。 Away the lower portion of the finger receiving portion 24a from the grip 7 (not shown) urging member for urging (clockwise direction about the pivot pin 25 in FIG. 1) is disposed. そして、トリガー24は付勢部材のばね力によって常時グリップ7から最も離れた定位置(解放位置)で保持されている。 Then, the trigger 24 is held in the most distant position from the always grip 7 by the spring force of the biasing member (release position).

【0021】さらに、グリップ7の後端上部における側面には針状電極操作手段としての針状電極操作レバー2 Furthermore, the needle electrode operating lever 2 as the needle electrode operating means on the side of the rear end upper portion of the grip 7
8が設けられている。 8 is provided. この針状電極操作レバー28はグリップ7に対して回動ピン29を中心に回動自在に連結されている。 The needle electrode operation lever 28 is pivotally connected to the centered pivot pin 29 relative to the grip 7. さらに、針状電極操作レバー28の回動中心より上方には長孔30が形成され、この長孔30には針状電極19の後端側面から突設された係合ピン31が挿入されている。 Further, above the center of rotation of the needle electrode operation lever 28 elongated hole 30 is formed, the engaging pin 31 projecting from the rear end side of the needle electrode 19 in the elongated hole 30 is inserted there.

【0022】針状電極操作レバー28には略V字状に配置された前後のアーム部32a,32bが設けられている。 The needle electrode operation lever 28 front and rear arm portions 32a arranged in a substantially V-shape in, 32b are provided. そして、一方のアーム部32aには指掛け部33が他方のアーム32bはストッパピン34と当接して針状電極操作レバー28の回動範囲を規制する役目をしている。 Then, the arm 32b finger grips 33 and the other on one of the arm portion 32a has a role of restricting the rotation range of the needle electrode operation lever 28 contacts the stopper pin 34 equivalents. さらに、回動ピン29には針状電極操作レバー28 Furthermore, the pivot pin 29 needle electrode operation lever 28
を時計回り方向に付勢する付勢部材(図示しない)が装着されている。 Urging the clockwise biasing member (not shown) is mounted.

【0023】ここで、トリガー24の手掛け部24aを付勢部材のばね力に抗してグリップ7側に引き込み操作することにより、内シース駆動部材を介して内シース6 [0023] Here, by operating pull the grip 7 side against the finger receiving portion 24a of the trigger 24 the spring force of the biasing member, the inner via inner sheath driving member sheath 6
が外シース5の軸方向前方へ移動して外シース5の前端から突出する。 There projects from the front end of the outer sheath 5 moves axially forward of the outer sheath 5. 内シース6の前進に伴って弾性部材12 The elastic member 12 along with the advancement of the inner sheath 6
a,12bが相対的に内シース6内に引き込まれた状態となり、把持部材11a,11bが閉じる。 a, 12b becomes a state of being drawn into the relatively the sheath 6, the gripping member 11a, 11b is closed. また、トリガー24が解放されるとグリップ7内の付勢部材のばね力によって定位置に戻り、弾性部材12a,12bが相対的に内シース6から突出して把持部材11a,11b Further, when the trigger 24 is released to return to the home position by the spring force of the biasing member in the grip 7, the elastic members 12a, 12b are gripped protrudes from relatively sheath 6 members 11a, 11b
は弾性部材12a,12bの弾性復元力によって開くようになっている。 It is adapted to open by the elastic restoring force of the elastic member 12a, 12b.

【0024】また、針状電極操作レバー28の指掛け部33に指を掛け、付勢部材の付勢力に抗して針状電極操作レバー28を反時計回り方向に回動すると、長孔30 Moreover, over a finger on the finger hook portion 33 of the needle electrode operation lever 28, when rotating the needle electrode operation lever 28 in the counterclockwise direction against the biasing force of the biasing member, the long holes 30
に挿入されている係合ピン31を介して針状電極19が前進駆動し、針状電極19の先端部が把持部材11a, The needle electrode 19 is driven forward through the engaging pin 31 is inserted, the tip portion of the needle electrode 19 is gripping member 11a, the
11bの挿通路16を挿通して把持部材11a,11b Gripping member 11a by inserting the insertion path 16 of 11b, 11b
の先端から突出するようになっている。 It is adapted to protrude from the tip.

【0025】針状電極操作レバー28が解放されると付勢部材のばね力によって定位置に戻り、針状電極19は後退して内シース6の貫通路17に引き込まれ、アーム部32bがストッパピン34に当接すると停止するようになっている。 [0025] needle electrode operation lever 28 is released to return to the home position by the spring force of the biasing member, the needle electrode 19 is drawn into the through-passage 17 of the inner sheath 6 retracts, arm portions 32b are stopper and it abuts against the pin 34 is adapted to stop.

【0026】次に、第1の実施形態の作用について説明する。 Next is a description of the operation of the first embodiment.

【0027】バイポーラ鉗子1のケーブル接続部23に接続ケーブルを接続し、バイポーラ鉗子1と高周波焼灼電源装置とを電気的に接続する。 [0027] Connect the connecting cable to the cable connecting portion 23 of the bipolar forceps 1, for electrically connecting the bipolar forceps 1 and the high-frequency cautery power source device. 初期状態では操作部4 In the initial state control unit 4
のトリガー24の手掛け部24aはグリップ7から最も離れた定位置で保持され、処置部ユニット接続部22は挿入部2の軸方向の移動範囲の最後端位置で保持される。 Finger receiving portion 24a of the trigger 24 is held in the most distant position from the grip 7, the treatment section unit connection part 22 is held at the last end position of the movement range of the axial direction of the insertion portion 2. この状態では、図1(b)に示すように処置部3の一対の弾性部材12a,12bが内シース6から突出して把持部材11a,11bが開いた状態にある。 In this state, a state in which the pair of elastic members 12a of the treatment section 3, the gripping member 11a 12b protrudes from the inner sheath 6, 11b are opened as shown in FIG. 1 (b).

【0028】そこで、トリガー24の手掛け部24aを板ばね部材のばね力に抗してグリップ7側に引き込み操作することにより、内シース駆動部材8を介して内シース6が外シース5の軸方向前方へ移動して外シース5の前端から突出する。 [0028] Therefore, by operating pull the grip 7 side against the finger receiving portion 24a of the trigger 24 the spring force of the leaf spring member, the inner sheath 6 through the inner sheath driving member 8 is axially of the outer sheath 5 move forward projecting from the front end of the outer sheath 5. 内シース6の前進に伴って弾性部材12a,12bが相対的に内シース6内に引き込まれた状態となり、図1(a)に示すように、把持部材11 Elastic member 12a with the advancement of the inner sheath 6, 12b is in the state of being drawn into the relatively within the sheath 6, as shown in FIG. 1 (a), the gripping member 11
a,11bが閉じる。 a, 11b is closed.

【0029】この状態で、バイポーラ鉗子1の挿入部2 [0029] In this state, the insertion portion 2 bipolar forceps 1
を患者の体内に挿入され、この挿入部2の先端の処置部3が体内の処置対象の生体組織Aの近傍位置まで誘導する。 The inserted into the body of the patient, the treatment portion 3 at the tip of the insertion portion 2 is guided to a position near the treatment target living tissue A within the body. トリガー24が解放されるとグリップ7内の付勢部材のばね力によって定位置に戻り、弾性部材12a,1 When the trigger 24 is released to return to the home position by the spring force of the biasing member in the grip 7, the elastic members 12a, 1
2bが相対的に内シース6から突出して把持部材11 2b protrudes from the relatively sheath 6 gripping member 11
a,11bは弾性部材12a,12bの弾性復元力によって開く。 a, 11b is opened by the elastic restoring force of the elastic member 12a, 12b.

【0030】続いて、拡開した把持部材11a,11b [0030] Subsequently, flared gripping member 11a, 11b
の間に生体組織Aを挿入した後、トリガー24の手掛け部24aを付勢部材のばね力に抗してグリップ7側に引き込み操作することにより、内シース駆動部材8を介して内シース6が外シース5の軸方向前方へ移動して外シース5の前端から突出する。 After inserting the body tissue A between by operating pull the grip 7 side against the finger receiving portion 24a of the trigger 24 the spring force of the biasing member, the inner sheath 6 through the inner sheath driving member 8 It moved axially forward of the outer sheath 5 protruding from the front end of the outer sheath 5. 内シース6の前進に伴って弾性部材12a,12bが相対的に内シース6内に引き込まれた状態となり、把持部材11a,11bが閉じ、 Elastic member 12a with the advancement of the inner sheath 6, 12b is in the state of being drawn into the relatively the sheath 6, the gripping member 11a, 11b is closed,
生体組織Aが図2に示すように、一対の把持部材11 As biological tissue A is shown in FIG. 2, a pair of gripping members 11
a,11b間に把持される。 a, it is gripped between 11b.

【0031】このとき、把持部材11a,11bには閉じたときに互いに噛合する鋸歯状部に形成され、生体組織Aを確実に把持できる。 [0031] In this case, the gripping member 11a, is formed on the serrations which mesh with each other when closed to 11b, can be reliably grasp the body tissue A. この状態で、高周波焼灼電源装置から接続ケーブルを介してコード接続部23に高周波電流が流れ、把持部材11aと11bとの間に凝固電流が流れ、生体組織Aの凝固が行われる。 In this state, the high-frequency current flows through the cord connecting portion 23 from the high-frequency cautery power source device via a connecting cable, coagulation current flows between the gripping members 11a and 11b, the solidification of the body tissue A is performed. 凝固が完了した後、トリガー24を解放するとグリップ7内の付勢部材のばね力によって内シース6が外シース5に対して初期位置に戻り、弾性部材12a,12bが相対的に内シース6から突出して把持部材11a,11bは弾性部材12a,12bの弾性復元力によって開き、把持部材1 After solidification is complete, releases the trigger 24 returns to the initial position the inner sheath 6 relative to the outer sheath 5 by the spring force of the biasing member in the grip 7, the elastic members 12a, 12b from the relatively sheath 6 projecting to the gripping member 11a, 11b is opened by the elastic restoring force of the elastic member 12a, 12b, gripping member 1
1a,11bは生体組織Aから開放される。 1a, 11b is released from the body tissue A.

【0032】したがって、生体組織Aを剥離する場合には、トリガー24によって把持部材11a,11bを閉じた状態で、生体組織Aの剥離部位に把持部材11a, [0032] Therefore, in the case of peeling the biological tissue A is a closed state of the gripping member 11a, 11b by the trigger 24, the gripping member 11a a release site of the body tissue A,
11bの先端部を押し当てた状態で、トリガー24を解放するとグリップ7内の付勢部材のばね力によって内シース6が外シース5に対して初期位置に戻り、把持部材11a,11bは弾性部材12a,12bの弾性復元力によって開くため、この把持部材11a,11bの開閉を繰り返すことにより生体組織Aの剥離を行うことができる。 In pressed against the tip of 11b, when releasing the trigger 24 returns to the initial position the inner sheath 6 by the spring force of the biasing member in the grip 7 to the outer sheath 5, the gripping member 11a, 11b is an elastic member 12a, to open by the elastic restoring force of the 12b, the gripping member 11a, it is possible to perform the separation of the body tissue a by repeating the opening and closing of 11b.

【0033】また、把持部材11a,11bを閉じた状態で、高周波焼灼電源装置から接続ケーブルを介してコード接続部23に切開電流を流すと、針状電極19に切開電流が流れる。 Further, the gripping member 11a, in the closed state of the 11b, the flow incision current cord connecting portion 23 from the high-frequency cautery power source device through a connection cable, an incision current flows through the needle electrode 19. この状態で、針状電極操作レバー28 In this state, the needle electrode operation lever 28
の指掛け部33に指を掛け、付勢部材の付勢力に抗して針状電極操作レバー28を反時計回り方向に回動すると、長孔30に挿入されている係合ピン31を介して針状電極19が前進し、針状電極19の先端部が把持部材11a,11b間の挿通路16を挿通し、図3に示すように、把持部材11a,11bの先端から突出する。 Your finger on the finger hook portion 33 of the rotating the needle electrode operation lever 28 in the counterclockwise direction against the urging force of the urging member via the engaging pin 31 which is inserted into the long hole 30 the needle electrode 19 is advanced, distal end grasping member 11a of the needle electrode 19, and inserted through the insertion passage 16 between 11b, as shown in FIG. 3, protruding gripping member 11a, from the tip of 11b.

【0034】この状態で、バイポーラ鉗子1を図4に示すように傾け、把持部材11a,11b及び針状電極1 [0034] In this state, inclined to indicate bipolar forceps 1 in FIG. 4, the gripping member 11a, 11b and the needle electrode 1
9の先端部を生体組織Aに押し付け、バイポーラ鉗子1 The tip of the 9 pressed against the body tissue A, bipolar forceps 1
を矢印a方向に移動すると、生体組織Aは針状電極19 When the move in the direction of arrow a, the body tissue A needle-like electrode 19
に流れる切開電流によって電気的に切開される。 Electrically dissection by dissection current flowing through.

【0035】切開が完了した後、針状電極操作レバー2 [0035] After the incision has been completed, the needle electrode operating lever 2
8を解放すると、付勢部材のばね力によって定位置に戻り、針状電極19は相対的に内シース6に引き込まれて針状電極19が後退し、アーム部32bがストッパピン34に当接すると停止する。 Releasing 8, returns to the home position by the spring force of the biasing member, the needle electrode 19 is drawn into relatively the sheath 6 retracts needle electrodes 19, contact arm portions 32b are in stopper pin 34 Then stop.

【0036】本実施形態によれば、生体組織Aの把持、 According to this embodiment, gripping of the biological tissue A,
剥離、凝固及び切開が1つのバイポーラ鉗子1で行うことができ、手術時にバイポーラ鉗子1の交換を少なくして煩わしさを軽減でき、手術時間の短縮を図ることができ、また、比較的広い範囲の生体組織Aの凝固と組織を把持して細かい凝固操作及び剥離を行うことができる。 Peeling, coagulation and incision can be done in one bipolar forceps 1, by reducing the exchange of bipolar forceps 1 can reduce the burden at the time of surgery, it is possible to shorten the operation time, also, a relatively wide range it is possible to perform fine solidification operation and peeled by gripping the coagulation and tissue of the body tissue a.

【0037】図5及び図6は第2の実施形態を示し、第1の実施形態と同一構成部分は同一番号を付して説明を省略する。 [0037] Figures 5 and 6 show a second embodiment, the same components as those of the first embodiment will be omitted with denoted by the same numbers. 本実施形態は、一対の把持部材11a,11 This embodiment includes a pair of gripping members 11a, 11
bを開閉自在に支持する弾性部材が、ばね鋼等からなるパイプ35a,35bによって形成され、パイプ35 Elastic members for supporting the b openably found pipe 35a made of spring steel or the like, it is formed by 35b, a pipe 35
a,35bの先端部には把持部材11a,11bが取り付けられている。 a, the distal end portion of 35b gripping member 11a, 11b is attached. そして、パイプ35a,35bは把持部材11a,11bを拡開させる方向に付勢されている。 Then, the pipe 35a, the 35b gripping member 11a, and is urged in a direction to spread apart the 11b.

【0038】一方のパイプ35bには、先端部を残し、 [0038] One of the pipe 35b, leaving a tip,
全長に亘って絶縁チューブ18によって被覆された針状電極19が軸方向に進退自在に挿通されている。 Needle electrode 19 which is covered by an insulating tube 18 over the entire length is inserted retractably in the axial direction. そして、この針状電極19は把持部材11bに穿設された挿通路36に挿通され、針状電極19の先端部は把持部材11bの先端から突出できるようになっている。 Then, the needle electrode 19 is inserted into the insertion passage 36 drilled in the gripping member 11b, the tip portion of the needle electrode 19 is adapted to be projected from the distal end of the gripping member 11b.

【0039】次に、第2の実施形態の作用について説明する。 Next, a description will be given of the operation of the second embodiment.

【0040】把持部材11a,11bの開閉操作及び針状電極19の進退操作は第1の実施形態と同様であるが、図5に示すように、生体組織Aを凝固(または剥離)する際の把持部材11a,11bの開閉に伴うパイプ35bの湾曲時に針状電極19が一緒に湾曲する。 The gripping member 11a, but 11b opened and closed and moved back and forth in the needle electrode 19 is the same as in the first embodiment, as shown in FIG. 5, coagulating biological tissue A (or release) when gripping member 11a, the needle-like electrode 19 at the time of bending of the pipe 35b with the opening and closing of 11b is curved together. また、生体組織Aを切開する際には、第1の実施形態と同様に針状電極操作レバー28の操作によって針状電極1 Also, when cutting the body tissue A, the needle-like electrodes 1 as in the first embodiment by operating the needle electrode operation lever 28
9を前進させ、先端部を把持部材11bの先端から突出し、把持部材11b及び針状電極19の先端部を生体組織Aに押し付け、図6に示すようにバイポーラ鉗子1を矢印b方向に移動すると、生体組織Aは針状電極19に流れる切開電流によって電気的に切開される。 9 is advanced to protrude a distal end from the distal end of the gripping member 11b, pressing the tip of the gripping member 11b and the needle electrode 19 to the body tissue A, when you move the bipolar forceps 1 as shown in FIG. 6 in the direction of arrow b , biological tissue a is electrically dissection by dissection current flowing through the needle electrode 19.

【0041】なお、本実施形態においては、把持部材1 [0041] In the present embodiment, the gripping member 1
1a,11bを閉じた状態で、針状電極19を突出させて切開する場合について説明したが、把持部材11a, 1a, in the closed state of the 11b, a case has been described in which the incision is projected the needle electrode 19, the gripping member 11a,
11bを開放した状態でも針状電極19の先端部を把持部材11bの先端から突出させることにより切開できる。 11b can incised by also protruding the tip of the needle-like electrode 19 from the distal end of the gripping member 11b in an open state. また、一対の把持部材11a,11bを開閉自在に支持する弾性部材の両方をばね鋼等からなるパイプ35 Further, a pipe 35 made pair of gripping members 11a, both the elastic member supporting 11b to openably from spring steel or the like
a,35bによって形成したが、針状電極19を挿通する側の一方をばね鋼等からなるパイプとし、他方を板ばねとしてもよい。 a, it was formed by 35b, and a pipe made of one of the side for inserting the needle electrode 19 of spring steel or the like, the other may be used as a leaf spring.

【0042】図7〜図9は第3の実施形態を示し、第1 [0042] FIGS. 7 to 9 show a third embodiment, the first
の実施形態と同一構成部分は同一番号を付して説明を省略する。 Embodiment the same components will be omitted the description of those same numbers. 本実施形態は、図7に示すように、一対の把持部材11a,11bを開閉自在に支持する弾性部材12 This embodiment, as shown in FIG. 7, the elastic member 12 for supporting the pair of gripping members 11a, 11b are openably
a,12bが取り付けられたロッド10の外周にロッド10を進退自在に支持する絶縁筒37が設けられ、この絶縁筒37とその外周の内シース6との間に円筒状の切開用電極38が進退自在に介装されている。 a, 12b are insulating tube 37 outer circumference to retractably supports the rod 10 of the rod 10 mounted is provided, the cylindrical incision electrode 38 between the insulating tube 37 and the inner sheath 6 of the outer periphery retractably it is interposed.

【0043】切開用電極38は、図8に示すように先端部の一部を軸方向に残して他の部分を切開することにより、針状電極39が形成されている。 The incision electrode 38, by cutting the other part while leaving a portion of the distal end portion in the axial direction as shown in FIG. 8, the needle electrode 39 is formed. そして、切開用電極38を後退させることにより、針状電極39は内シース6の内部に没入し、前進させることにより、内シース6の先端から突出するようになっている。 Then, by retracting the incising electrode 38, the needle electrode 39 is retracted into the interior of the inner sheath 6, by advancing, so as to protrude from the distal end of the inner sheath 6. 切開用電極3 Incising electrode 3
8は第1の実施形態と同様に針状電極操作レバー28の操作によって進退駆動される。 8 is driven forward and backward by the operation of the needle electrode operation lever 28 as in the first embodiment.

【0044】次に、第3の実施形態の作用について説明する。 Next, a description will be given of the operation of the third embodiment.

【0045】把持部材11a,11bの開閉操作は第1 The gripping member 11a, and 11b opened and closed in the first
の実施形態と同様であるが、生体組織Aを切開する際には、第1の実施形態と同様に針状電極操作レバー28の操作によって切開用電極38を前進させ、針状電極39 Is similar to the embodiment, when incising the body tissue A is to advance the incision electrode 38 as in the first embodiment by operating the needle electrode operation lever 28, the needle electrode 39
を内シース6の先端から突出し、図9に示すように、把持部材11a,11b及び針状電極39の先端部を生体組織Aに押し付け、バイポーラ鉗子1を矢印c方向に移動すると、生体組織Aは針状電極39に流れる切開電流によって電気的に切開される。 From the distal end of the inner sheath 6 protrudes, as shown in FIG. 9, the distal end portion of the gripping member 11a, 11b and the needle electrode 39 pressed against the body tissue A, when you move the bipolar forceps 1 in the direction of arrow c, the body tissue A is electrically dissection by dissection current flowing through the needle electrode 39.

【0046】図10及び図11は第4の実施形態を示し、第1の実施形態と同一構成部分は同一番号を付して説明を省略する。 [0046] FIGS. 10 and 11 show a fourth embodiment, the same components as those of the first embodiment will be omitted with denoted by the same numbers. 本実施形態は、図10に示すように、 This embodiment, as shown in FIG. 10,
内シース6の先端開口部は絶縁部材40によって閉塞されているとともに、内シース6の外周には絶縁筒41が嵌合されている。 End opening portion of the inner sheath 6 together is closed by the insulating member 40, the outer periphery of the inner sheath 6 is fitted an insulating tube 41. 絶縁部材40の外周縁には90゜間隔に4個の嵌合孔42が穿設され、これら嵌合孔42には棒状の凝固用電極43が絶縁部材40から突出した状態に固定されている。 Insulating the outer periphery of the member 40 is bored four fitting holes 42 to 90 ° interval, the coagulation electrode 43 of the rod-like in these fitting holes 42 is fixed to the state of protruding from the insulating member 40 . 凝固用電極43は内シース6に内挿されたリード線44を介して操作部7のケーブル接続部23に電気的に接続されている。 Coagulating electrode 43 to the cable connecting portion 23 of the operation unit 7 via a lead wire 44 inserted into the inner sheath 6 are electrically connected.

【0047】さらに、絶縁部材40の中央部には貫通孔45が穿設され、この貫通孔45には、先端部を残し、 [0047] Further, the center portion of the insulating member 40 is bored through hole 45, the through hole 45, leaving the tip,
全長に亘って絶縁チューブ18によって被覆された針状電極19が軸方向に進退自在に挿通されている。 Needle electrode 19 which is covered by an insulating tube 18 over the entire length is inserted retractably in the axial direction. そして、この針状電極19は絶縁部材40の先端から突出できるようになっている。 Then, the needle electrode 19 is adapted to be projected from the distal end of the insulating member 40.

【0048】次に、第4の実施形態の作用について説明する。 Next, a description will be given of the operation of the fourth embodiment.

【0049】生体組織Aを凝固する際には、図10に示すように、挿入部3の先端部を凝固しようとする生体組織Aに対して垂直に押し当てると、4個の凝固用電極4 [0049] When the coagulating biological tissue A, as shown in FIG. 10, when pressed perpendicularly to the body tissue A to be solidified the leading end of the insertion portion 3, 4 of the coagulation electrodes 4
3が同時に生体組織Aに接し、この状態で各凝固電極4 3 is in contact with the body tissue A at the same time, the coagulation electrode 4 in this state
3に高周波電流を流すと生体組織Aが凝固される。 3 high frequency current when the biological tissue A is solidified. このとき、挿入部3の先端部には4個の凝固用電極43が設けられているため、挿入部3を任意の方向に傾けてもいずれか2個の凝固用電極43が接して凝固できる。 At this time, since the distal end portion of the insertion portion 3 four coagulation electrode 43 is provided, can be solidified by the insertion portion 3 one or two coagulation electrodes 43 be inclined in any direction is in contact .

【0050】また、生体組織Aを切開する際には、第1 [0050] Moreover, when cutting the biological tissue A is first
の実施形態と同様に針状電極操作レバー28の操作によって針状電極19を絶縁部材40の先端から突出し、図11に示すように、凝固用電極43及び針状電極19の先端部を生体組織Aに押し付け、バイポーラ鉗子1を矢印d方向に移動すると、生体組織Aは針状電極19に流れる切開電流によって電気的に切開される。 Embodiment similarly to protrude the needle electrode 19 by the operation of the needle electrode operation lever 28 from the front end of the insulating member 40, as shown in FIG. 11, the distal end portion of the coagulating electrode 43 and the needle electrode 19 biological tissue pressing the a, when you move the bipolar forceps 1 in the direction of arrow d, the biological tissue a is electrically dissection by dissection current flowing through the needle electrode 19.

【0051】なお、本実施形態においては、絶縁部材4 [0051] In the present embodiment, the insulating member 4
0に4個の凝固用電極43を設けたが、凝固用電極43 0 provided four coagulation electrodes 43, but the coagulation electrode 43
の個数及び配置は限定されるものではない。 The number and arrangement of which should not be construed as limiting. また、凝固用電極43を選択的に絶縁部材40の先端から突没自在としてもよい。 Further, it may be freely projecting and retracting the coagulation electrode 43 from the distal end of selectively insulating member 40.

【0052】図12及び図13は第5の実施形態を示し、第1の実施形態と同一構成部分は同一番号を付して説明を省略する。 [0052] FIGS. 12 and 13 show a fifth embodiment, the same components as those of the first embodiment will be omitted with denoted by the same numbers. 本実施形態は、図12に示すように、 This embodiment, as shown in FIG. 12,
操作部4のグリップ7には凝固電流を流すための第1のスイッチ46と切開電流を流すための第2のスイッチ4 Second switch 4 to the grip 7 of the operation section 4 passing the first switch 46 and the incision current for supplying coagulation current
7が設けられている。 7 is provided. そして、第1と第2のスイッチ4 Then, the first and second switches 4
6,47の操作によって図13に示す電極切換え部48 Electrode switching unit 48 shown in FIG. 13 by the operation of the 6,47
が切換えられるようになっている。 So that the is switched. 電極切換え部48について説明すると、把持部材11a,11bと導通する把持側接点49a,49bと針状電極19と導通する切開側接点50を有するとともに、接続ケーブル51と導通する可動接点52と固定接点53を有している。 Referring to the electrode switching unit 48, the gripping member 11a, the grip-side contacts 49a to conduction with 11b, which has an incision side contact 50 which conducts the 49b and the needle electrode 19, the movable contacts and the fixed contacts 52 to conduct the connection cable 51 It has a 53. また、接続ケーブル51は高周波焼灼電源装置54と接続されている。 The connection cable 51 is connected to the high-frequency cauterization power supply apparatus 54.

【0053】図13(a)に示すように、凝固時には凝固側接点49a,49bと可動接点52と固定接点53 [0053] As shown in FIG. 13 (a), coagulation side contact 49a at the time of solidification, 49b and the movable contact 52 fixed contact 53
とを接続し、切開側接点50を開放して把持部材11a Connect the door, gripping member 11a by opening the incision side contact 50
と11bとの間に凝固電流を流す。 Flowing a coagulation current between the 11b. 図13(b)に示すように、切開時には凝固側接点49bと固定接点53とを接続し、可動接点52と切開側接点50とを接続して把持部材11a,11bと針状電極19との間に切開電流を流す。 As shown in FIG. 13 (b), connects the coagulation side contact 49b and fixed contact 53 at the time of dissection, the gripping member 11a by connecting the movable contact 52 and the incision side contact 50, the 11b and the needle electrode 19 flow through an incision current between. なお、図13(b)では凝固側接点49aは開放状態にあるが、一対の把持部材11a,11bは閉じているため、電気的に導通状態にあり、凝固側接点4 Although FIG. 13 (b) the solidified side contact 49a in the open state, there pair of grasping members 11a, because 11b is closed, the electrically conductive state, the solidification side contact 4
9bと固定接点53とを接続することにより、把持部材11aの導通状態となる。 By connecting 9b and the fixed contact 53, a conductive state of the gripping member 11a.

【0054】本実施形態によれば、操作部3のグリップ7を握ったまま、第1と第2のスイッチ46,47の操作によって凝固と切開の切換えが簡単に行え、操作性を向上できる。 In accordance with the present embodiment, while holding the grip 7 of the operation section 3, coagulation and switching of incisions performed simply by operating the first and second switches 46 and 47, the operability can be improved.

【0055】前述した実施の形態によれば、次のような構成が得られる。 [0055] According to the above-described embodiment, the configuration as follows is obtained.

【0056】(付記1)挿入部及び挿入部の手元側に操作部を有し、前記挿入部の先端部に前記操作部の操作により組織を把持、剥離、凝固を行うための一対の把持部材及び針状電極を有した高周波処置具において、前記操作部に前記一対の把持部材を開閉する鉗子操作手段及び前記針状電極を挿入部の先端部より進退させ、組織を切開する針状電極操作手段を設けたことを特徴とする高周波処置具。 [0056] (Note 1) has an operating section on the proximal side of the insertion portion and the insertion portion, grasping tissue by operation of the operation portion to the distal end of the insertion portion, peeling, a pair of gripping members for performing coagulation and in the high-frequency treatment instrument having a needle electrode, the forceps operation means and said needle-like electrode for opening and closing the pair of grip members to the operation portion is retractable from the distal end of the insertion portion, the needle electrode operation for cutting tissue high-frequency treatment instrument, characterized in that a means.

【0057】(付記2)前記針状電極は、一対の把持部材が閉じた状態で、挿入部の先端部から突出可能であることを特徴とする付記1記載の高周波処置具。 [0057] (Note 2) the needle electrode, with the pair of gripping members are closed, the high-frequency treatment instrument according to Supplementary Note 1, wherein it is capable of protruding from the distal end of the insertion section.

【0058】(付記3)前記針状電極は、一対の把持部材の一方の先端部から突出可能であることを特徴とする付記1記載の高周波処置具。 [0058] (Supplementary Note 3) The needle electrode high-frequency treatment instrument according to Supplementary Note 1, wherein it is capable of protruding from one of the tip portions of the pair of gripping members.

【0059】(付記4)前記挿入部の先端部における周縁部に複数対の凝固用電極が突出して配置されていることを特徴とする付記1記載の高周波処置具。 [0059] (Supplementary Note 4) The insertion portion frequency treatment instrument according to Supplementary Note 1, wherein the coagulation electrode pairs are arranged to project the peripheral portion at the tip of the.

【0060】付記1によれば、生体組織の把持、剥離、 [0060] According to Note 1, gripping of the biological tissue, peeling,
凝固及び切開が1つの高周波処置具で行うことができ、 Coagulation and incision can be done in one of the high-frequency treatment instrument,
手術時に高周波処置具の交換を少なくして煩わしさを軽減でき、手術時間の短縮を図ることができ、また、比較的広い範囲の生体組織の凝固と組織を把持して細かい凝固操作及び剥離を行うことができる。 To reduce the exchange of the high-frequency treatment instrument can reduce the burden to the time of surgery, it is possible to shorten the operation time, also, the fine solidification operation and peeled by gripping the solidified structure of the relatively wide range of biological tissue It can be carried out.

【0061】付記2によれば、高周波処置具をその軸方向と直角方向に移動することにより、生体組織を切開できる。 [0061] According to Note 2, by moving the high-frequency treatment instrument in the axial direction and perpendicular direction, it can be incised body tissue.

【0062】付記3によれば、鉗子を閉じた状態、開いた状態でも、高周波処置具をその軸方向と直角方向に移動することにより、生体組織を切開できる。 [0062] According to Note 3, the closed state of the forceps, even in the opened state, by moving the high-frequency treatment instrument in the axial direction and perpendicular direction, can be incised body tissue.

【0063】付記4によれば、高周波処置具を任意の角度に傾けても凝固用電極を生体組織に接触して凝固できる。 [0063] According to Note 4, be inclined to the high-frequency treatment instrument at any angle can be solidified by contact with a coagulation electrode to the living tissue.

【0064】一般に、トラカールを介して生体の腹腔内に挿入し、生体組織を凝固するバイポーラ電気メスは、 [0064] In general, through the trocar inserted into the abdominal cavity of a living body, bipolar electrocautery of coagulating biological tissue,
細長い棒状部の先端部に設けられた第1電極と、この第1電極に対して絶縁された状態で第1電極を取り囲むように配置された第2電極とを備えている。 A first electrode provided on the distal end of the elongated rod portion, and a second electrode disposed so as to surround the first electrode in a state of being insulated from the first electrode. 第1電極は手元操作部の操作によって進退し、第2電極の先端からの突出量を調整して穿刺する深さを調整できるようになっている。 The first electrode is adapted to adjust the depth of forward and backward by operating the operation portion, to puncture by adjusting the amount of projection of the tip of the second electrode.

【0065】また、第1電極は先端部が鋭利な尖端に形成されているとともに、細長い棒状部であるため、第2 [0065] Further, since the first electrode with the tip portion is formed in a sharp tip, an elongated rod-like portion, the second
電極の先端から第1電極の先端部を突出した状態でトラカールに挿入すると、誤って第1電極を折り曲げてしまったり、折損する虞もある。 When inserted into the trocar in a state where the tip of the electrode protrudes the distal end of the first electrode, there or worse by bending a first electrode accidentally also risk of breakage. また、凝固電流を流す前に第1電極の先端部が生体組織に穿刺し、生体組織に傷を付け、出血の虞もある。 The tip portion of the first electrode pierces the living body tissue prior to flowing coagulation current, scratching the biological tissue, there is a possibility of bleeding.

【0066】図14及び図15は前述のような問題を解消した高周波処置具としてのバイポーラ電気メスである。 [0066] FIGS. 14 and 15 is a bipolar electrocautery as high-frequency treatment instrument which solves the problems as described above. すなわち、図14に示すように、バイポーラ電気メスの挿入部60には、細長い棒状部の先端部に設けられた第1電極61を有している。 That is, as shown in FIG. 14, the insertion portion 60 of the bipolar electrocautery, and a first electrode 61 provided at the distal end of the elongated rod portion. この第1電極61の周囲には絶縁部材62によって絶縁された導電部材63が設けられている。 This is around the first electrode 61 is provided with the conductive member 63 which is insulated by the insulating member 62. 導電部材63の先端にはコイル状の付勢ばね64を介して第1電極61を取り囲むように断面がリング状の第2電極65が進退自在に設けられている。 The tip of the conductive member 63 is cross-section provided retractably second electrode 65 of the ring-shaped to surround the first electrode 61 through a biasing spring 64 coiled.
さらに、導電部材63及び第2電極65の外周は絶縁シース66によって覆われている。 Further, the outer periphery of the conductive member 63 and the second electrode 65 are covered with an insulating sheath 66.

【0067】第2電極65は付勢ばね64によって先端側に付勢され、第1電極61を収納する第1の位置と、 [0067] The second electrode 65 is urged distally by biasing spring 64, a first position for accommodating the first electrode 61,
第2電極65を付勢ばね64の付勢力に抗して後退させると、相対的に第1電極61が第2電極65から突出する第2の位置に移動可能であり、第1の位置においては第1の電極61の先端は第2電極65の先端から寸法e Retracting against the second electrode 65 to the biasing force of the biasing spring 64, relatively the first electrode 61 is movable to a second position projecting from the second electrode 65, in a first position the distal end of the first electrode 61 is dimensioned e from the distal end of the second electrode 65
だけ没入している。 Only it is immersive.

【0068】このように構成されたバイポーラ電気メスは、トラカールを介して生体の腹腔内に挿入し、生体組織Aを凝固する際に、挿入部60の先端部を生体組織A [0068] configured bipolar electrocautery in this way, through a trocar inserted into the abdominal cavity of a living body, when coagulating biological tissue A, the insertion portion 60 of the distal portion of the body tissue A
を前進すると、まず、第2電極65が生体組織Aに接触する。 When advancing, initially, the second electrode 65 is in contact with the body tissue A. 挿入部60をさらに前進すると、付勢ばね64が圧縮された第2電極65が後退し、相対的に第1電極6 In more advanced the insertion portion 60, a second electrode 65 which biasing spring 64 is compressed to retract relatively first electrode 6
1が第2電極65から突出して生体組織Aに穿刺される。 1 is punctured to the biological tissue A protruding from the second electrode 65. したがって、第1と第2電極61,65が同時に生体組織Aに接触して凝固が行われ、さらに挿入部60の押込み量の加減によって第1電極61の生体組織Aに対する穿刺深さを調整でき、生体組織Aを切開することもできる。 Therefore, the first and second electrodes 61 and 65 is performed solidified in contact with the body tissue A at the same time, can adjust the puncture depth to the body tissue A first electrode 61 by further pushing of subtraction of the insertion portion 60 , may be incised body tissue a.

【0069】図16はバイポーラ電気メスで、第1電極の形状が図14及び図15と異なる。 [0069] Figure 16 is a bipolar electrocautery, the shape of the first electrode is different from FIGS. 14 and 15. 第2電極65に囲まれた第1電極67は、平板状で、幅方向の一側には鋭角部68が、他側には鈍角部69が設けられ、さらに前端面は平坦部70に形成されている。 First electrode 67 surrounded by the second electrode 65 is formed in a flat plate shape, an acute angle portion 68 on one side in the width direction, obtuse portion 69 is provided on the other side, further the front end face is a flat section 70 It is.

【0070】前記構成によれば、第1電極67の平坦部70と第2電極65の前端面とを生体組織Aに接触させたり、挿入部60を傾けて第1電極67の鋭角部68と第2電極65の前端一部とを生体組織Aに接触させたり、さらに挿入部60を逆方向に傾けて第1電極67の鈍角部69と第2電極65の前端一部とを生体組織Aに接触させることができる。 [0070] According to the above construction, or the flat portion 70 of the first electrode 67 and the front end surface of the second electrode 65 is brought into contact with the body tissue A, an acute angle portion 68 of the first electrode 67 by tilting the insertion portion 60 a front end portion of the second electrode 65 or in contact with the body tissue a, further front portion and the body tissue a obtuse angle portion 69 and the second electrode 65 of the first electrode 67 by tilting the insertion portion 60 in the opposite direction it can be contacted with. したがって、生体組織Aの広範囲凝固、狭範囲凝固及び切開が生体組織Aに対する挿入部60の傾け方によって使い分け処置できる。 Therefore, extensive coagulation of the living tissue A, narrow range coagulation and incision can be selectively used treated with angling way of the insertion portion 60 with respect to the biological tissue A.

【0071】したがって、前記構成によれば、次の構成が得られる。 [0071] Thus, according to the configuration, the following configuration is obtained.

【0072】(付記5)細長い棒状部の先端部に設けられた第1電極と、この第1電極に対して絶縁された状態で第1電極を取り囲むように配置された第2電極とを有するバイポーラ電気メスにおいて、前記第2電極は第1 [0072] (Supplementary Note 5) having a first electrode provided on the distal end of the elongated rod-like portion, and a second electrode disposed so as to surround the first electrode in a state of being insulated from the first electrode in bipolar electrocautery, the second electrode is first
電極を収納する第1の位置と、第1電極が第2電極から突出する第2の位置に移動可能で、通常は第1の位置にあるように付勢されていることを特徴とするバイポーラ電気メス。 A first position for accommodating the electrode, the bipolar first electrode is movable in a second position projecting from the second electrode, it is typically characterized in that it is biased to a first position electric knife.

【0073】(付記6)前記第1の電極は先端が針形状をなし、前記第2電極は第1電極を取り囲む断面がリング状であることを特徴とする付記5記載のバイポーラ電気メス。 [0073] (Supplementary Note 6) The first electrode tip without a needle shape, the second electrode is a bipolar electrocautery of Appendix 5, wherein a cross section surrounding the first electrode is ring-shaped.

【0074】(付記7)前記第1の電極は、先端部に鋭角部と鈍角部を有する板状体で、前記第2電極は第1電極を取り囲む断面がリング状であることを特徴とする付記5記載のバイポーラ電気メス。 [0074] (Supplementary Note 7) The first electrode is a plate-like body having an acute angle portion and an obtuse angle portion on the distal end portion, the second electrode is characterized in that the cross-section surrounding the first electrode is a ring-shaped Appendix 5 bipolar electrocautery according.

【0075】付記5,6によれば、第1と第2電極が同時に生体組織に接触して凝固が行われ、さらに挿入部の押込み量の加減によって第1電極の生体組織に対する穿刺深さを調整でき、生体組織を切開することもできる。 [0075] According to Note 5, 6, the first and second electrodes is performed solidified in contact with the body tissue at the same time, a further lancing depth by the pressing amount of acceleration of the insertion portion with respect to the living tissue of the first electrode adjustable, it is possible to incise the body tissue.

【0076】付記7によれば、生体組織の広範囲凝固、 [0076] According to Note 7, extensive coagulation of the living tissue,
狭範囲凝固及び切開が生体組織に対する挿入部の傾け方によって使い分けができる。 Narrow range coagulation and incision can distinguish with angling way of the insertion portion with respect to the living tissue.

【0077】図17〜図19はバイポーラ電気メスを示し、挿入部71の軸心部には細長い棒状の第1電極72 [0077] FIGS. 17 to 19 shows a bipolar electrocautery, the insertion portion 71 first electrode 72 of the elongated rod-like in the axial center portion of the
が進退自在に設けられている。 There are provided retractably. この第1電極72の周囲には絶縁部材73を介して外シース74が設けられている。 The periphery of the first electrode 72 and the outer sheath 74 is provided via an insulating member 73. 挿入部71の先端部には係合受部75が設けられ、 Engagement receiving portion 75 is provided on the distal end of the insertion portion 71,
外シース74の先端部にはカムロック環76が設けられている。 The distal end portion of the outer sheath 74 the cam lock ring 76 is provided.

【0078】挿入部71の先端部には係合受部75に係合される係合爪77aを有する第2電極77が着脱可能に設けられ、係合爪77aを係合受部75に係合し、カムロック環76によってロックすることにより固定されるようになっている。 [0078] The second electrode 77 having the engagement claw 77a at the tip portion to be engaged with the engagement receiving portion 75 of the insertion portion 71 are detachably provided, engaging the engaging claws 77a to the engagement receiving portion 75 combined, and is fixed by locking the cam lock ring 76. 第2電極77は円筒状で、その先端側の外周面の一部には細長い管状組織Bに係合するように断面が半円状の凹陥部からなる係合部78が設けられている。 The second electrode 77 is cylindrical, the engagement portion 78 whose cross section consists of semicircular recess to engage the elongated tubular tissue B is part of the outer peripheral surface of the distal end side. さらに、第2電極77の内部には絶縁部材7 Further, the inside of the second electrode 77 insulating member 7
9が設けられ、この絶縁部材79には第1電極72が挿通する挿通路80が設けられている。 9 is provided, the insertion path 80 in which the first electrode 72 is inserted is provided in the insulating member 79.

【0079】したがって、第1電極72の先端部は第2 [0079] Thus, the distal end portion of the first electrode 72 and the second
電極77によって取り囲まれており、前進時には第2電極77の先端より前方に突出するようになっている。 It is surrounded by the electrode 77, so as to project forward from the distal end of the second electrode 77 during forward. しかも、第2電極77には係合部78が設けられているため、第2電極77の係合部78を管状組織Bに係合することにより、第1電極72の先端部が管状組織Bに接近する。 Moreover, since the engaging portion 78 is provided on the second electrode 77, by engaging the engaging portion 78 of the second electrode 77 to the tubular tissue B, the distal end portion of the first electrode 72 is tubular tissue B approach to. このため、第1と第2電極72,77間に切開電流を流してバイポーラ電気メスを管状組織Bの縦軸方向に移動することにより、管状組織Bを縦軸方向に切開できる。 Therefore, by moving the bipolar electrosurgical knife in the direction of the longitudinal axis of the tubular tissue B by passing an incision current between the first and second electrodes 72 and 77 can be incised tubular tissue B in the vertical axis direction.

【0080】図20は第2電極77の変形例を示し、係合部78の深さの浅い第2電極80を示し、管状組織B [0080] Figure 20 shows a modification of the second electrode 77, it illustrates a second electrode 80 shallow depth of the engaging portion 78, the tubular tissue B
の太さによって交換して挿入部71の先端部に装着することができる。 It can be a replace by thickness is attached to the distal end of the insertion portion 71.

【0081】図21〜図25はバイポーラ電気メスを示し、図21は、挿入部81の先端部に設けられた第2電極82の側部に凹陥部からなる係合部83を設けたものである。 [0081] FIGS. 21 to 25 shows a bipolar electrocautery, 21, which was provided with the engagement portion 83 consisting of concave portions on the side of the second electrode 82 provided on the distal end of the insertion portion 81 is there. 係合部83を形成する第2電極82の先端部8 The distal end portion 8 of the second electrode 82 to form the engagement portion 83
2aは挿入部81の軸線に対して略垂直で、第1電極7 2a is substantially perpendicular to the axis of the insertion portion 81, the first electrode 7
2の前進によって管状組織Bを挟持し、この状態で第1 The tubular tissue B sandwiched by advancement of the 2, the first in this state
と第2電極72,82間に切開電流を流してバイポーラ電気メスを管状組織Bの縦軸方向に移動することにより、管状組織Bを縦軸方向に切開できる。 If by moving the bipolar electrosurgical knife in the direction of the longitudinal axis of the tubular tissue B by passing an incision current between the second electrode 72 and 82 can be incised tubular tissue B in the vertical axis direction.

【0082】図22は、係合部83を形成する第2電極82の先端部82aを略円弧に湾曲したフック形状で、 [0082] Figure 22 is a hook-shaped curved in a substantially arcuate tip portion 82a of the second electrode 82 to form the engagement portion 83,
管状組織Bが係合部83から飛出すことなく、保持できるようにしたものであり作用は図21の場合と同様である。 Without tubular tissue B is fly out from the engaging portion 83, the action is obtained by allowing the holding is the same as in FIG. 21.

【0083】図23は、挿入部81の内部に円筒状の導電部材84を進退自在に設け、この導電部材84の先端部における側部を切欠することにより、係合部85を有する第2電極86を設けたものである。 [0083] Figure 23 is provided retractably cylindrical conductive member 84 inside the insertion portion 81, by notch the sides at the tip of the conductive member 84, a second electrode having an engaging portion 85 86 in which a is provided. 第2電極86は前記切欠によって形成された棒状部86aとこの棒状部86aの先端部に一体に設けられたリング状部86bとからなり、リング状部86bの略中心に第1電極72が位置している。 The second electrode 86 is composed of a ring-shaped portion 86b integrally provided at the distal end of the rod portion 86a and the rod portion 86a which is formed by the notch, first electrode 72 is located substantially at the center of the ring-shaped portion 86b doing.

【0084】したがって、導電部材84を前進させることにより、第2電極86が挿入部81の先端から突出して係合部85が形成され、この係合部85に管状組織B [0084] Therefore, by advancing the conductive member 84, the engaging portion 85 second electrode 86 is protruded from the distal end of the insertion portion 81 is formed, the tubular tissue B on the engagement portion 85
を係合できる。 A can engage. 係合部85に管状組織Bを係合後、第1 After engaging the tubular tissue B with the engaging portion 85, the first
電極72を前進させることにより、第1と第2電極7 By advancing the electrode 72, the first and second electrode 7
2,86間に切開電流を流してバイポーラ電気メスを管状組織Bの縦軸方向に移動することにより、管状組織B By moving the bipolar electrosurgical knife in the direction of the longitudinal axis of the tubular tissue B by passing an incision current between 2,86, tubular tissue B
を縦軸方向に切開できる。 The possible incision in the vertical axis direction. また、第2電極86を(b) Further, the second electrode 86 (b)
の位置にすることで通常の針状電極と同様な使い方が可能となる。 Thereby enabling similar use as conventional needle electrode by the position.

【0085】図24は、挿入部81の基端部に操作部9 [0085] Figure 24 includes an operation section to the proximal end of the insertion portion 81 9
0が設けられている。 0 is provided. 挿入部81には棒状の第1電極7 First electrode 7 of the bar-shaped insertion portion 81
2が進退自在に挿通されており、この第1電極72の進退動作を操作部90で行うことができるようになっている。 2 are inserted retractably, and is capable of performing forward and backward movement of the first electrode 72 by the operation unit 90. すなわち、操作部90には枢支軸91を支点として回動自在な操作レバー92が設けられ、この操作レバー92には操作部90のケーシング93に設けられた第1 In other words, rotatable operating lever 92 is provided in the operation unit 90 a pivot shaft 91 as a fulcrum, the This operation lever 92 provided in the casing 93 of the operation unit 90 1
の長穴94を貫通して第1電極72と連結する連結ピン95が設けられている。 The connecting pin 95 is provided for connecting the first electrode 72 through the elongated hole 94 of the. したがって、操作レバー92の回動操作によって第1電極72が進退動作できる。 Accordingly, the first electrode 72 can be advanced and retracted by the rotation operation of the operating lever 92.

【0086】また、ケーシング93には第2の長穴96 [0086] Further, the casing 93 the second long hole 96
が設けられ、この第2の長穴96には該長穴96の範囲内において任意の位置に固定できるロックねじからなるレバーロック部材97が設けられ、操作レバー92の回動量を規制して第1電極72の最大突出量を位置決めする位置決め手段を構成している。 Is provided, this is the second elongate hole 96 is provided a lever lock member 97 made of a locking screw which can be fixed at any position within the range of the long hole 96, first to regulate the amount of rotation of the operating lever 92 constitute a positioning means for positioning the maximum amount of protrusion of the first electrode 72.

【0087】図25は、挿入部81の基端部に設けられた操作部90に、挿入部81に進退自在に挿通された棒状の第1電極72と連結するロッド98が進退自在に挿通されている。 [0087] Figure 25 is the operation portion 90 provided on the proximal end of the insertion portion 81, a rod 98 for connecting the first electrode 72 movably inserted through a rod-like insertion portion 81 is inserted retractably ing. ロッド98の基端側は操作部90を貫通して後方に突出しており、この基端部と操作部90のケーシング93には指掛け部99が設けられている。 The base end side of the rod 98 protrudes rearward through the operation unit 90, finger grips 99 on the casing 93 of the base end portion and the operation portion 90 is provided. したがって、指掛け部99に手指を掛けてロッド98を進退操作することによって第1電極72を進退動作できる。 Therefore, it advanced and retracted the first electrode 72 by advancing and retracting operation of the rod 98 over the fingers on the finger grips 99.

【0088】また、ロッド98の操作部90より後方に突出する部分にはねじ部98aが形成され、このねじ部98aにはロック部材100が螺合されている。 [0088] Further, the portion protruding rearwardly from the operation section 90 of the rod 98 the screw portion 98a is formed, the locking member 100 is screwed into the screw portion 98a. したがって、ロック部材100を回して前後方向に移動することにより、ロッド98の前進方向に移動量を規制して第1電極72の最大突出量を位置決めする位置決め手段を構成している。 Therefore, by moving in the longitudinal direction by turning the locking member 100 constitute a positioning means for positioning the maximum amount of projection of the first electrode 72 to regulate the amount of movement in the forward direction of the rod 98.

【0089】したがって、前記構成によれば、次の構成が得られる。 [0089] Thus, according to the configuration, the following configuration is obtained.

【0090】(付記8)挿入部の先端部に第1電極と第2電極を有するバイポーラ電気メスにおいて、第2電極は、棒状の第1電極を取り囲むように挿入部の先端部に設けられた筒状体であり、外周面の少なくとも一部に細長い管状組織に係合する凹陥部からなる係合部を有していることを特徴とするバイポーラ電気メス。 [0090] In bipolar electrocautery having a first electrode and a second electrode at the distal end (Note 8) insertion portion, the second electrode is provided on the distal end of the insertion section to surround the first electrode of the rod-like a tubular body, a bipolar electrocautery, characterized in that it has an engaging portion comprising a recessed portion for engaging the elongated tubular tissue at least a portion of an outer surface.

【0091】(付記9)前記第2電極は、係合部の深さが異なる複数種類からなり、前記挿入部の先端部に交換可能に着脱自在であることを特徴とする付記8記載のバイポーラ電気メス。 [0091] (Supplementary Note 9) The second electrode is composed of a plurality of types of the depth of the engagement portion are different, bipolar according appendix 8, which is a freely interchangeably removably attached to the distal end portion of the insertion portion electric knife.

【0092】(付記10)前記第1電極は、挿入部に対して進退自在であり、挿入部の先端部からの突出長が調整できることを特徴とする付記8記載のバイポーラ電気メス。 [0092] (Supplementary Note 10) The first electrode is movable forward and backward with respect to the insertion portion, bipolar electrocautery of Supplementary Note 8, wherein the projecting length from the distal end of the insertion portion can be adjusted.

【0093】(付記11)前記係合部を形成する第2電極の先端部はフック形状であることを特徴とする付記8 [0093] (Supplementary Note 11) Supplementary Note 8 distal end of the second electrode forming the engaging portion is characterized by a hook-shaped
記載のバイポーラ電気メス。 Bipolar electric scalpel described.

【0094】(付記12)前記第1電極は、第2電極に対して進退自在であり、第2電極を貫通して突出可能であることを特徴とする付記8記載のバイポーラ電気メス。 [0094] (Supplementary Note 12) The first electrode is movable forward and backward with respect to the second electrode, bipolar electrocautery of Supplementary Note 8, wherein it is projectable through the second electrode.

【0095】(付記13)前記第1電極が挿入部の先端部から最も突出した位置を予め設定する位置決め手段を有していることを特徴とする付記8記載のバイポーラ電気メス。 [0095] (Supplementary Note 13) bipolar electrocautery according appendix 8 in which the first electrode is characterized by having a positioning means for presetting the most protruding position from the tip of the insertion portion.

【0096】(付記14)前記位置決め手段は、第1電極と同軸上のねじ部に螺合されたロック部材であることを特徴とする付記13記載のバイポーラ電気メス。 [0096] (Supplementary Note 14) The positioning means, bipolar electrocautery of Supplementary Note 13, wherein the a locking member screwed to the threaded portion on the first electrode coaxially.

【0097】(付記15)前記第1電極は、操作部に設けられた操作レバーによって進退自在であることを特徴とする付記8記載のバイポーラ電気メス。 [0097] (Supplementary Note 15) The first electrode is a bipolar electrocautery of Supplementary Note 8, wherein it is movable back and forth by the operation lever provided in the operation unit.

【0098】(付記16)前記操作レバーの作動範囲は、操作部に設けられた位置決め手段によって設定されることを特徴とする付記15記載のバイポーラ電気メス。 [0098] (Supplementary Note 16) operating range of the operation lever, bipolar electrocautery of Appendix 15, wherein the set by the positioning means provided on the operation unit.

【0099】図26〜図28はバイポーラ電気メスを示し、図26に示すように、挿入部101の軸心部には細長い棒状の第1電極102が進退自在に設けられている。 [0099] FIGS. 26 to 28 shows a bipolar electrocautery, as shown in FIG. 26, the first electrode 102 of the elongated bar-shaped in the axial portion of the insertion portion 101 is provided retractably. この第1電極102の周囲には絶縁部材103を介して円筒状の第2電極104が設けられている。 The second electrode 104 cylindrical is provided around the first electrode 102 through an insulating member 103. 第2電極104の外周には絶縁筒105が設けられ、さらに絶縁筒105の外側にはシース106が軸方向に進退自在に設けられている。 The outer periphery of the second electrode 104 is provided an insulating tube 105, more on the outside of the insulating cylinder 105 and the sheath 106 is provided retractably in the axial direction. シース106の内層は硬質パイプ1 The inner layer of the sheath 106 is a rigid pipe 1
07によって形成され、この硬質パイプ107の先端部における外層は弾性変形部108aを有した弾性チューブ108によって形成されている。 07 is formed by the outer layer at the tip of the rigid pipe 107 is formed by an elastic tube 108 having an elastically deformable portion 108a. 硬質パイプ107は挿入部101の手元側まで延長され、弾性チューブ10 Hard pipe 107 is extended to the proximal side of the insertion portion 101, the elastic tube 10
8は硬質パイプ107の途中に固定されている。 8 is fixed in the middle of the rigid pipe 107.

【0100】そして、シース106によって第1電極1 [0100] Then, the first electrode by a sheath 106 1
02及び第2電極104の先端部がシース106の内部に収納される第1の位置(図26参照)と第1電極10 02 and a first position in which the distal end portion of the second electrode 104 is housed within the sheath 106 (see FIG. 26) and the first electrode 10
2及び第2電極104の先端部がシース106の先端部から突出する第2の位置(図27参照)との間で移動可能である。 Tip 2 and the second electrode 104 is movable between a second position projecting from the distal end of the sheath 106 (see FIG. 27). 使用時、つまりトラカール109にバイポーラ電気メスを挿入する際には、シース106が前進した第1の位置とし、不使用時に硬質パイプ107を手元操作によって後退させることにより、弾性変形部108a In use, i.e. when inserting the bipolar electrocautery into the trocar 109, a first position in which the sheath 106 is advanced, by retracting the hand operation of a hard pipe 107 when not in use, the resilient deformation part 108a
が挿入部101の軸方向に対して直角方向に円盤状に拡径変形し、トラカール109に挿入不可能となる。 There was enlarged deformed into a disk shape in a direction perpendicular to the axial direction of the insertion portion 101, it becomes impossible inserted into the trocar 109. したがって、シース106から第1電極102及び第2電極104の先端部が突出した状態で、腹腔内等にバイポーラ電気メスを挿入する誤操作を防止することができる。 Accordingly, in a state where the sheath 106 distal end of the first and second electrodes 102 and 104 is projected, it is possible to prevent an erroneous operation of inserting a bipolar electrocautery intraperitoneal like.

【0101】図29はシース106の変形例を示し、前記弾性チューブ108の弾性変形部108aに軸方向に複数の切り込み部108bを設け、硬質パイプ107を手元操作によって後退させることにより、正面視で略十字状に拡径変形するようにしたものである。 [0102] Figure 29 shows a variation of the sheath 106, a plurality of cut portions 108b in the axial direction to the elastic deformation portion 108a of the elastic tube 108 is provided, by retracting the rigid pipe 107 by hand operation, as viewed from the front it is obtained so as to enlarged deformation in a substantially cross shape.

【0102】図30は第1電極の変形例を示し、第1電極110の先端部を略鎌状に湾曲したものである。 [0102] Figure 30 shows a modification of the first electrode, it is obtained by bending the tip portion of the first electrode 110 in a substantially sickle. そして、第1電極110の湾曲部111の先端部に鋭利部1 Then, the sharp portion at the distal end of the curved portion 111 of the first electrode 110 1
11aを形成するとともに、湾曲部111の背面に鈍角部111bを形成したものである。 11a to form a, and forming an obtuse angle portion 111b on the rear surface of the curved portion 111. したがって、生体組織の広範囲凝固、狭範囲凝固及び切開が生体組織に対する挿入部101の傾け方によって使い分け処置できる。 Therefore, extensive coagulation of the living tissue, a narrow range coagulation and incision can be selectively used treated with angling way of the insertion portion 101 against body tissue.

【0103】図31は第1電極及び第2電極の変形例を示し、挿入部101の先端部に絶縁部材112を挟んで第1電極113と第2電極114とを左右対称的に一体的に設け、全体形状として正面視で略楔状に形成したものである。 [0103] Figure 31 shows a modification of the first electrode and the second electrode, the first electrode 113 and the second electrode 114 symmetrically to integrally across the insulating member 112 to the distal end of the insertion portion 101 provided, and is formed into a substantially wedge-shaped in front view as a whole shape. そして、第1電極113と第2電極114の一側部には鋭角部115aが形成され、他側部には鈍角部115bが設けられている。 Then, a first electrode 113 on one side of the second electrode 114 sharp portion 115a is formed, obtuse portion 115b is provided on the other side. したがって、生体組織の広範囲凝固、狭範囲凝固及び切開が生体組織に対する挿入部101の傾け方によって使い分け処置できる。 Therefore, extensive coagulation of the living tissue, a narrow range coagulation and incision can be selectively used treated with angling way of the insertion portion 101 against body tissue.

【0104】図32及び図33は第1電極及び第2電極の変形例を示し、絶縁部材116を挟んで第1電極11 [0104] Figures 32 and 33 show a modification of the first electrode and the second electrode, the first electrode 11 across the insulating member 116
7と第2電極118とを一体的に形成した電極ブロック119である。 7 that the electrode block 119 integrally formed with the second electrode 118. 電極ブロック119の形状は、左右側面119a,119bは平行で、上面119cに対して直角な平坦面を有している。 The shape of electrode block 119, the left and right side surfaces 119a, 119b are parallel, and has a perpendicular flat surface to the upper surface 119c. また、下面119dは左側面119aから右側面119bに向って漸次上り勾配に傾斜しており、右側面119bは左側面119aより狭幅に形成されている。 The lower surface 119d is inclined upward slope gradually toward the right side surface 119b from the left side surface 119a, right side surface 119b is formed narrower than the left side surface 119a. さらに、前面119eは左側面11 Further, the front surface 119e left side 11
9aから右側面119bに向って漸次後方に傾斜しており、左側面119aと前面119eとの交点は鋭角部1 9a is gradually inclined rearwardly toward the right side surface 119b from the intersection of the left side surface 119a and the front 119e acute angle portion 1
20aに、右側面119bと前面119eとの交点は鈍角部120bに形成されている。 To 20a, the intersection of the right side surface 119b and the front 119e are formed on the obtuse angle portion 120b.

【0105】したがって、前記構成によれば、次の構成が得られる。 [0105] Thus, according to the configuration, the following configuration is obtained.

【0106】(付記17)細長い棒状部の先端に互いに絶縁された一対の電極を有するバイポーラ電気メスにおいて、挿入部の先端部に少なくともその先端部が第1電極及び第2電極を収納する第1の位置と第1電極及び第2電極を露出する第2の位置との間で移動可能なシースを備え、このシースの先端付近に第1の位置から第2の位置への移動に伴って軸に対して垂直方向に変形する弾性変形部を設けたことを特徴とするバイポーラ電気メス。 [0106] (Note 17) in a bipolar electrocautery having a pair of electrodes insulated from each other at the tip of an elongated rod-like portion, the housing at least the tip portion of the first electrode and the second electrode to the distal end of the insertion section 1 axis with includes a moveable sheath between the position and a second position exposing the first electrode and the second electrode, from a first position near the tip of the sheath to move to the second position bipolar electrocautery, characterized in that a resilient deformable portion that deforms in a direction perpendicular to.

【0107】(付記18)前記第2電極は挿入部の先端部に設けられたリング状の電極であり、第1電極は鋭利な先端を有する針状であることを特徴とする付記17記載のバイポーラ電気メス。 [0107] (E18) the second electrode is a ring-shaped electrode provided at the distal end of the insertion portion, according Appendix 17 first electrode, characterized in that the needle having a sharpened tip bipolar electric scalpel.

【0108】(付記19)前記第2の電極は挿入部の先端部に設けられたリング状の電極であり、第1電極は鋭利部と鈍角部を有する略鎌状であることを特徴とする付記17記載のバイポーラ電気メス。 [0108] The (Supplementary Note 19) The second electrode is a tip-ring-shaped electrodes provided on the insertion portion, the first electrode is characterized by a substantially sickle having a sharpened portion and an obtuse angle portion bipolar electrocautery appendices 17, wherein.

【0109】(付記20)前記第1電極及び第2電極は共に幅の狭い鋭角部と、幅の広い鈍角部を有し、互いは絶縁部材を挟んで互いに鋭角部と鈍角部が同側となるよう配置されていることを特徴とする付記17記載のバイポーラ電気メス。 [0109] (Supplementary Note 20) The first and second electrodes and both narrow acute angle portion width, a wide obtuse portion width, each other an obtuse angle portion and the acute angle portion to each other across the insulating member is ipsilateral so as bipolar electrocautery according Appendix 17, characterized in that it is arranged.

【0110】(付記21)前記第1電極は狭幅、第2電極は広幅に形成され、第1と2電極の間に配置された絶縁部材からなる処置部を有し、前記処置部には第1電極、絶縁部材、第2電極にかけて2つの交差する斜面と斜面の交差によって形成されるエッジが設けられていることを特徴とする付記17記載のバイポーラ電気メス。 [0110] (Supplementary Note 21) the first electrode is narrow, the second electrode is formed on the wide, the first and has a treatment portion made of an insulating member arranged between the two electrodes, the said treatment unit first electrode, the insulating member, bipolar electrocautery according Appendix 17 edge formed by the intersection of two intersecting inclined surfaces and the inclined surface toward the second electrode and being provided.

【0111】図34及び図35はバイポーラ電気メスを示し、挿入部121と、この挿入部121の基端部に設けられた操作部122とから構成されている。 [0111] FIGS. 34 and 35 shows a bipolar electrocautery, and the insertion portion 121, and an operation section 122 provided on the proximal end of the insertion portion 121. 挿入部1 The insertion portion 1
21には進退自在な棒状の第1電極123が設けられ、 21 first electrode 123 retractably rod-shaped are provided on,
この第1電極123の外周には絶縁部材124を介して円筒状の第2電極125が設けられ、第2電極125の外周はシース126によって覆われている。 This is the outer periphery of the first electrode 123 second electrode 125 cylindrical is provided via an insulating member 124, the outer periphery of the second electrode 125 is covered with a sheath 126. 第2電極1 The second electrode 1
25は基端部でリード線133bを介して常に高周波電源(図示しない)に接続されている。 25 is always connected to a high frequency power supply (not shown) through the lead wire 133b at the proximal end.

【0112】操作部122の内部には前後方向に沿って支持台127が設けられ、この支持台127の上面には付勢ばね128によって後退方向に付勢されたスライダ片129が載置され、このスライダ片129に前記第1 [0112] along the longitudinal direction in the interior of the operating section 122 is support platform 127 is provided, the slider member 129 which is biased in the backward direction by the biasing spring 128 on the upper surface of the support base 127 is placed, wherein the slider member 129 first
電極123の基端部が連結されている。 Proximal end of the electrode 123 is connected. スライダ片12 Slider piece 12
9の上面には前方に向って上り勾配の傾斜面129aが設けられ、この傾斜面129aには操作部122の上部に上下動自在に設けられた操作ボタン130の下端部が当接している。 The upper surface 9 is provided inclined surface 129a of the rising gradient towards the front, the lower end portion of the operation button 130 provided vertically movably on the upper portion of the operating portion 122 is in contact with the inclined surface 129a. そして、スライダ片129は付勢ばね1 Then, the slider member 129 is biased spring 1
28によって後退位置にあり、第1電極123の先端部は没入しているが、操作ボタン130を押し下げと、操作ボタン130の下端部がスライダ片129の傾斜面1 By 28 in a retracted position, the distal end portion of the first electrode 123 is retracted, but the depressing an operation button 130, the inclined surface of the lower end slider member 129 of the operation button 130 1
29aと摺動してスライダ片129を前進させる分力が作用し、第1電極123の先端部が突出するようになっている。 Component force acts to advance the slider member 129 and 29a and the sliding tip portion of the first electrode 123 is made to project.

【0113】さらに、支持台127の前端部とスライダ片129の前端部との間には電気接点131aと131 [0113] Further, the electrical contact 131a is provided between the front end portion of the front end portion and the slider member 129 of the support 127 131
bとが互いに対向して設けられ、電気接点131aはリード線133aを介して高周波電源に、電気接点131 b and is provided opposite to each other, the electrical contact 131a is in a high-frequency power source via a lead wire 133a, the electrical contacts 131
bはスライダ片129を介して第1電極123に電気的に接続されている。 b is electrically connected to the first electrode 123 via the slider member 129. そして、操作ボタン130を押し下げてスライダ片129が前進して電気接点131aと1 Then, the electrical contacts 131a advances the slider member 129 by depressing the operation button 130 and 1
31bとが接触すると、高周波電源と第1電源123とが電気的に導通し、第1電極123の先端部が突出すると同時に第1電極123から第2電極125に高周波電流が流れるようになっている。 When 31b are in contact with a high frequency power supply and the first power supply 123 is electrically conductive, so that the first electrode 123 at the same time when the leading end portion of the first electrode 123 protrudes frequency current flows through the second electrode 125 there.

【0114】図36はバイポーラ電気メスを示し、操作部122の内部に第1電極123を進退動作するソレノイド132が設けられ、このソレノイド132は電源(図示しない)に接続されている。 [0114] Figure 36 shows a bipolar electrocautery, solenoid 132 for forward and backward movement of the first electrode 123 is provided inside the operation portion 122, the solenoid 132 is connected to a power source (not shown). さらに、第1電極1 Further, the first electrode 1
23及び第2電極125に高周波電流を流すためのリード線133と接続する電流検知部134が設けられ、この電流検知部134が高周波電流を検知した時、ソレノイド132に作動信号を入力するようになっている。 Current detector 134 for connecting the lead wire 133 for supplying a high-frequency current is provided to the 23 and the second electrode 125, when the current detection unit 134 detects a high-frequency current, to enter an operation signal to the solenoid 132 going on.

【0115】図37はバイポーラ電気メスを示し、操作部122の前端部にはねじ穴135が設けられ、このねじ穴135には第1電極123と第2電極125を備えた挿入部121の基端部にはねじ部136が設けられている。 [0115] Figure 37 shows a bipolar electrocautery, the front end portion of the operation unit 122 is provided with screw holes 135, group of the insertion portion 121 in the threaded hole 135 includes a first electrode 123 a second electrode 125 threaded portion 136 is provided at an end portion. そして、挿入部121のねじ部136を操作部1 Then, operating the threaded portion 136 of the insertion portion 121 part 1
22のねじ穴135にねじ込むことにより、操作部12 By screwing the screw holes 135 of 22, the operation section 12
2に対して挿入部121が着脱可能に取り付けられる。 The insertion portion 121 with respect to 2 is detachably attached.

【0116】したがって、挿入部121の長さが異なるものを複数本用意することにより、使用目的、処置部位、手術方式、例えば、開腹手術と腹腔鏡下手術の両方に使用可能である。 [0116] Thus, by the length of the insertion portion 121 is a plurality of prepared different, intended use, the treatment site, the surgical method, for example, can be used for both open surgery and laparoscopic surgery.

【0117】図38はバイポーラトラカールを示し、外筒管137と、この外筒管137に挿入されるトラカール本体138とから構成されている。 [0117] Figure 38 shows a bipolar trocar, an outer cylinder tube 137, and a the trocar body 138. which is inserted into the outer cylinder tube 137. 外筒管137の先端部には外筒電極139が設けられ、トラカール本体1 The distal end of the outer cylinder tube 137 outer tubular electrode 139 is provided, the trocar body 1
38の先端部には針電極140が設けられている。 Needle electrode 140 is provided at the distal end portion 38. 外筒電極139及び針電極140は導電線139a,140 The outer tubular electrode 139 and the needle electrode 140 is conductive line 139a, 140
aを介して高周波電源(図示しない)に接続されている。 It is connected to a high frequency power supply (not shown) via a. さらに、外筒管137の後端部とトラカール本体1 Further, the rear end portion of the outer cylinder tube 137 and trocar body 1
38の後端部との間にはトラカール本体138を後退方向に付勢する付勢ばね141が設けられている。 38 urging spring 141 for urging the trocar body 138 in the backward direction between the rear end portion is provided for.

【0118】したがって、トラカール本体138を付勢ばね141の付勢力に抗して前進させ、トラカール本体138の針電極140を外筒管137の先端部より突出した状態で、腹壁等を貫通し、外筒電極139と針電極140との間に凝固電流を流して処置部を凝固できる。 [0118] Thus, to advance against the trocar body 138 to the urging force of the urging spring 141, in a state in which the needle electrodes 140 of the trocar body 138 to protrude from the distal end of the outer cylinder tube 137, through the abdominal wall or the like, It can solidify the treatment portion by passing a coagulation current between the outer tubular electrode 139 and the needle electrode 140.

【0119】前記構成によれば、次の構成が得られる。 [0119] According to the configuration, the following configuration is obtained.

【0120】(付記22)挿入部に、進退自在に設けた第1電極と、この第1電極の外周に第2電極を設けたバイポーラ電気メスにおいて、前記第1電極と第2電極間に高周波電流を流した時のみ前記第1電極が第2電極より突出することを特徴とするバイポーラ電気メス。 [0120] high frequency (Supplementary Note 22) insertion part, a first electrode provided retractably in bipolar electrocautery provided with second electrodes on the outer periphery of the first electrode, between the first electrode and the second electrode bipolar electrocautery where the first electrode only when a current flows, characterized in that projecting from the second electrode.

【0121】(付記23)挿入部に、進退自在に設けた第1電極と、この第1電極の外周に第2電極を設けたバイポーラ電気メスにおいて、高周波電源から前記第1電極と第2電極に高周波電流を出力した時、この出力信号を受信して前記第1電極を第2電極より突出するスライド手段を設けたことを特徴とするバイポーラ電気メス。 [0121] in (Supplementary Note 23) insertion part, a first electrode provided retractably in bipolar electrocautery provided with second electrodes on the outer periphery of the first electrode, wherein the high frequency power supply first electrode and the second electrode when outputting the high-frequency current, bipolar electrocautery, characterized in that a sliding means for the first electrode receives the output signal projected from the second electrode.

【0122】(付記24)スライド手段は、ソレノイドであることを特徴とする付記23記載のバイポーラ電気メス。 [0122] (Supplementary Note 24) slide means, bipolar electrocautery of Appendix 23, wherein it is a solenoid.

【0123】付記22〜24によれば、不使用時に第1 [0123] According to Note 22-24, first when not in use
電極が他の部材と干渉して曲げられたり、折損することはなく、また生体組織に不用意に傷を付ける虞はなく、 Electrode or is bent to interfere with other members, not be broken, and not fear that put carelessly damage the living tissue,
操作性の向上と安全性の向上が図れる。 Improvement of the improvement and safety of operability can be achieved.

【0124】 [0124]

【発明の効果】以上説明したように、この発明によれば、組織の把持、剥離、凝固及び切開が1つの処置具で行うことができ、手術時に処置具の交換を少なくして煩わしさを軽減でき、手術時間の短縮を図ることができ、 As described in the foregoing, according to the present invention, gripping of the tissue, stripping, coagulation and incision can be done in one treatment instrument, a hassle with less exchange of the treatment instrument at the time of surgery mitigation can be, it is possible to shorten the surgery time,
また、比較的広い範囲の組織の凝固と組織を把持して細かい凝固操作及び剥離を行うことができるという効果がある。 Further, there is an effect that it is possible to perform a fine solidification operation and peeled by gripping the solidified structure of the relatively wide range of tissues.

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

【図1】この発明の第1の実施形態を示す高周波処置具の全体の側面図。 Figure 1 is a side view of the whole of the high-frequency treatment instrument showing a first embodiment of the present invention.

【図2】同実施形態の処置部を示し、生体組織を把持した状態の縦断側面図。 Figure 2 shows a treatment section of the embodiment, longitudinal side view of a state of gripping the biological tissue.

【図3】同実施形態の処置部を示し、(a)は縦断側面図、(b)は正面図。 Figure 3 illustrates the treatment portion of the same embodiment, (a) shows the longitudinal sectional side view, (b) is a front view.

【図4】同実施形態の処置部を示し、生体組織を切開している状態の縦断側面図。 Figure 4 shows a treatment section of the embodiment, longitudinal side view of a state where the incised body tissue.

【図5】この発明の第2の実施形態の処置部を示し、生体組織を把持した状態の縦断側面図。 [5] The second shows a treatment section of the embodiment, longitudinal side view of a state of gripping the living tissue of the present invention.

【図6】同実施形態の処置部を示し、生体組織を切開している状態の縦断側面図。 6 shows a treatment section of the embodiment, longitudinal side view of a state where the incised body tissue.

【図7】この発明の第3の実施形態の処置部を示し、生体組織を把持した状態の縦断側面図。 [7] The third shows the treatment portion of the embodiment, longitudinal side view of a state of gripping the living tissue of the present invention.

【図8】同実施形態の針状電極を示し、(a)は側面図、(b)は正面図。 8 shows a needle electrode according to the embodiment, (a) shows the side view, (b) is a front view.

【図9】同実施形態の処置部を示し、生体組織を切開している状態の縦断側面図。 9 shows a treatment section of the embodiment, longitudinal side view of a state where the incised body tissue.

【図10】この発明の第4の実施形態の処置部を示し、 [Figure 10] shows the treatment of the fourth embodiment of the present invention,
(a)は生体組織を凝固している状態の縦断側面図、 (A) is a vertical sectional side view of a state where the coagulating biological tissue,
(b)はa−a線に沿う断面図。 (B) is a sectional view taken along the line a-a.

【図11】同実施形態の処置部を示し、生体組織を切開している状態の縦断側面図。 [Figure 11] shows the treatment portion of the embodiment, longitudinal side view of a state where the incised body tissue.

【図12】この発明の第5の実施形態を示す高周波処置具の全体の側面図。 Figure 12 is a side view of the whole of the high-frequency treatment instrument showing a fifth embodiment of the present invention.

【図13】同実施形態を示し、電極切換え部の説明図。 [Figure 13] shows the same embodiment, illustration of the electrode switching unit.

【図14】この発明の第6の実施形態の処置部を示す縦断側面図。 [14] Sixth longitudinal side view showing a treatment portion of an embodiment of the present invention.

【図15】同実施形態を示し、生体組織を凝固している状態の縦断側面図。 [Figure 15] shows the same embodiment, longitudinal side view of a state where the coagulating biological tissue.

【図16】この発明の第7の実施形態の処置部を示す斜視図。 Figure 16 is a perspective view showing a treatment portion of a seventh embodiment of the present invention.

【図17】この発明の第8の実施形態の挿入部の先端部を示す斜視図。 Figure 17 is a perspective view of the distal end of the insertion portion of the eighth embodiment of the present invention.

【図18】同実施形態の挿入部の先端部の縦断側面図。 Figure 18 is a longitudinal side view of the distal end of the insertion section of the embodiment.

【図19】同実施形態の挿入部の先端部の正面図。 Figure 19 is a front view of the distal end of the insertion section of the embodiment.

【図20】同実施形態の変形例を示す正面図。 Figure 20 is a front view showing a modification of the embodiment.

【図21】この発明の第9の実施形態の挿入部の先端部を示し、(a)は管状組織を保持した状態の側面図、 [Figure 21] shows the distal end of the insertion section of the ninth embodiment of the present invention, (a) represents a side view of the state of holding the tubular tissue,
(b)は管状組織を切開している状態の側面図。 (B) is a side view of the condition being dissected tubular tissue.

【図22】同実施形態の変形例を示し、管状組織を保持した状態の側面図。 [Figure 22] shows a variation of the embodiment, a side view of a state of holding the tubular tissue.

【図23】この発明の第10の実施形態の挿入部の先端部を示し、(a)は第2電極を前進させた状態の側面図、(b)は第2電極を後退させた状態の側面図、 [Figure 23] shows the distal end of the insertion section of a tenth embodiment of the present invention, (a) represents a side view of a state in which advancing the second electrode, (b) is a state of being retracted second electrode Side view,
(c)は(b)の矢印C方向から見た正面図。 (C) is a front view seen from the arrow C direction (b).

【図24】第1の開示例のバイポーラ電気メスの全体の側面図。 Figure 24 is a side view of the overall bipolar electrocautery of the first disclosed embodiment.

【図25】第2の開示例のバイポーラ電気メスの全体の側面図。 Figure 25 is a side view of the overall bipolar electrocautery of the second disclosed example.

【図26】第3の開示例のバイポーラ電気メスの先端部を示し、第1及び第2電極を収納した状態の縦断側面図。 [Figure 26] shows the distal end of the bipolar electric scalpel in the third disclosed embodiment, longitudinal side view of a state in which housing the first and second electrodes.

【図27】同開示例のバイポーラ電気メスの先端部を示し、第1及び第2電極を露出した状態の縦断側面図。 [Figure 27] shows the distal end of the bipolar electrocautery of the disclosed embodiment, longitudinal side view of a state where the exposing the first and second electrodes.

【図28】図27の矢印D方向から見た正面図。 Figure 28 is a front view seen from the arrow D in Fig. 27.

【図29】第3の開示例の変形例を示す正面図。 Figure 29 is a front view showing a modification of the third disclosed embodiment.

【図30】第4の開示例のバイポーラ電気メスの先端部を示す斜視図。 Figure 30 is a perspective view of the distal end of the bipolar electrocautery of the fourth disclosed embodiment.

【図31】第5の開示例のバイポーラ電気メスの先端部を示す斜視図。 Figure 31 is a perspective view of the distal end of the bipolar electrocautery of the fifth disclosed embodiment.

【図32】第6の開示例のバイポーラ電気メスの先端部の電極ブロックを示し、(a)は平面図、(b)は正面図、(c)は側面図。 [Figure 32] Sixth shows the electrode block of the tip of the bipolar electrocautery disclosed example, (a) shows the plan view, (b) a front view, (c) is a side view.

【図33】同開示例のバイポーラ電気メスの先端部の電極ブロックを示す斜視図。 Figure 33 is a perspective view showing an electrode block of the tip of the bipolar electrocautery of the disclosed examples.

【図34】第7の開示例のバイポーラ電気メスの全体の側面図。 Figure 34 is a side view of the overall bipolar electrocautery seventh disclosed embodiment.

【図35】同開示例のバイポーラ電気メスの全体の縦断側面図。 Figure 35 is a longitudinal side view of the overall bipolar electrocautery of the disclosed examples.

【図36】第8の開示例のバイポーラ電気メスの操作部の縦断側面図。 Figure 36 is a longitudinal side view of the operating portion of a bipolar electrocautery eighth disclosed embodiment.

【図37】第9の開示例のバイポーラ電気メスの操作部の縦断側面図。 Figure 37 is a longitudinal side view of the operating portion of a bipolar electrocautery of the ninth example disclosed.

【図38】第10の開示例のバイポーラトラカールの縦断側面図。 Figure 38 is a longitudinal side view of a bipolar trocar tenth disclosed embodiment.

【符号の説明】 DESCRIPTION OF SYMBOLS

2…挿入部 3…処置部 4…操作部 11a,11b…把持部材 19…針状電極 2 ... insertion portion 3 ... treatment section 4 ... operating portion 11a, 11b ... gripping member 19 ... needle electrode

───────────────────────────────────────────────────── フロントページの続き (72)発明者 原野 健二 東京都渋谷区幡ヶ谷2丁目43番2号 オリ ンパス光学工業株式会社内 ────────────────────────────────────────────────── ─── of the front page continued (72) inventor Kenji Harano Shibuya-ku, Tokyo Hatagaya 2-chome No. 43 No. 2 Olympus optical industry Co., Ltd. in

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 挿入部及び挿入部の手元側に操作部を有し、前記挿入部の先端部に前記操作部の操作により組織を把持、剥離、凝固を行うための一対の把持部材及び切開を行うための針状電極を有した高周波処置具において、 前記操作部に前記一対の把持部材を開閉する鉗子操作手段及び前記針状電極を挿入部の先端部より進退させ、組織を切開する針状電極操作手段を設けたことを特徴とする高周波処置具。 1. A has an operation portion on the proximal side of the insertion portion and the insertion portion, grasping tissue by operation of the operation portion to the distal end of the insertion portion, peeling, coagulation pair of gripping members and incision for performing in the high-frequency treatment instrument having a needle electrode for performing the forceps operation means and said needle-like electrode for opening and closing the pair of grip members to the operation portion is retractable from the distal end of the insertion portion, cutting tissue needle high-frequency treatment instrument, characterized in that a Jo electrode operating means.
JP9344729A 1997-12-15 1997-12-15 High frequency treating device Withdrawn JPH11169381A (en)

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USD819815S1 (en) 2016-03-09 2018-06-05 Covidien Lp L-shaped blade trigger for an electrosurgical instrument
US10271896B2 (en) 2016-09-16 2019-04-30 Covidien Lp Electrosurgical instrument with end-effector assembly including electrically-conductive, tissue-engaging surfaces and switchable bipolar electrodes
USD843574S1 (en) 2017-06-08 2019-03-19 Covidien Lp Knife for open vessel sealer
US10265121B2 (en) 2018-08-02 2019-04-23 Covidien Ag Vessel sealer and divider
US10271897B2 (en) 2018-08-02 2019-04-30 Covidien Lp Surgical instrument with stamped double-flange jaws and actuation mechanism

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