JPH0984805A - Coagulation forceps fitted with cutting-off function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the contact of a coagulation electrode with an unintended tissue part by providing a grasping part formed from an electric insulating member to be subjected to opening and closing operation and a coagulation electrode of which the electrode surface is exposed only to the grasping surface of the grasping member to a grasping part. SOLUTION: A leading end grasping part 5 grasping and coagulating the tissue in the body cavity to stop the bleeding thereof is provided to an insertion pipe and a cutting-off means cutting off the tissue is inserted into the insertion pipe. An elastic member 41 supporting grasping members 42a, 42b is formed by applying an insulating film 50 to a conductive member 49. The grasping member 42a, 42b are formed into an almost U-shape on a plan view by forming a slit 51 into which the leading end cutting-off part of the cutting-off means is inserted so as to leave the leading end side parts of them and coagulation electrodes 50 are parallelly embedded in both side parts of the slit 51 along the axial direction from the rear end side part on the way of the slit 51 to the position reaching the front from the foremost end position of the slit 51. The coagulation electrode 52 is exposed in such a state that only the electrode end surface of a part thereof slightly protrudes to the grasping surface 43.

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】本発明は内視鏡の観察下で体
腔内の部位を外科手術する際に使用される切離機能付凝
固鉗子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coagulation forceps having a detachment function used for performing a surgical operation on a site in a body cavity under observation by an endoscope.

【０００２】[0002]

【従来の技術】この種の凝固鉗子としては、ＵＳＰ第
２，０３１，６８２号明細書やＵＳＰ第４，６５５，２
１６号明細書において知られるように、開閉と通電可能
な電極を有した高周波凝固部と、該高周波凝固部の領域
内を移動あるいは旋回する切離手段を備えて成るものが
ある。2. Description of the Related Art As coagulation forceps of this type, USP No. 2,031,682 and USP No. 4,655,2 are used.
As is known in the specification of No. 16, there is one which comprises a high-frequency coagulation part having an electrode capable of opening and closing and energizing, and a cutting means which moves or swirls in the region of the high-frequency coagulation part.

【０００３】これらの凝固鉗子では通常、切離しようと
する組織を、高周波凝固部の電極で把持しながら通電し
て凝固した後、その組織を把持した状態で切離手段を作
動させることにより、組織の凝固止血された部位を電気
的あるいは機械的に切離する。このような処理を行うこ
とで、所望の組織部分を出血させることなく、切離する
ことが可能ならしめるものである。[0003] In these coagulation forceps, the tissue to be cut is usually coagulated by energizing while holding the electrode of the high-frequency coagulation unit, and then the cutting means is operated while holding the tissue, whereby the tissue is cut. Is electrically or mechanically cut off at the site where the coagulation is stopped. By performing such a process, a desired tissue portion can be cut off without bleeding.

【０００４】[0004]

【発明が解決しようとする課題】[Problems to be Solved by the Invention]

（従来技術の欠点）従来の凝固鉗子では組織を把持する
導電性の凝固電極がそのまま露出しているため、その外
表面が処置対象としない臓器に触れ、電流を流してしま
う虞がある。また、把持した状態の組織を切離する切離
部材がその把持部材の領域を越えて意図しない臓器に接
触し、損傷を起こす虞もある。(Disadvantage of the prior art) In the conventional coagulation forceps, since the electroconductive coagulation electrode for grasping the tissue is exposed as it is, there is a possibility that the outer surface of the coagulation forceps touches an organ not to be treated and an electric current is caused to flow. Further, there is a possibility that the cutting member that cuts the tissue in the gripped state may contact the unintended organ beyond the region of the gripping member and cause damage.

【０００５】なお、前述した従来のバイポーラ凝固鉗子
ではその一対の凝固電極が把持部材を兼ね、その把持部
材を閉じたとき、凝固電極同志が直接に接触してしま
う。この状態で電流を流した場合、高周波電源に過負荷
を与え、高周波電源を破損してしまう虞があった。In the conventional bipolar coagulation forceps described above, the pair of coagulation electrodes also serve as gripping members, and when the gripping members are closed, the coagulation electrodes directly contact each other. If a current is applied in this state, the high frequency power source may be overloaded and the high frequency power source may be damaged.

【０００６】（発明の目的）本発明は前述した課題に着
目してなされたものであり、その目的とするところは意
図しない組織部分に凝固電極が触れ、不要な電流を流し
てしまうことを回避でき、意図する組織に対する凝固処
置を容易かつ確実に行うことができる切離機能付凝固鉗
子を提供することにある。(Object of the Invention) The present invention has been made by paying attention to the above-mentioned problems, and its object is to avoid that the coagulation electrode comes into contact with an unintended tissue portion and causes an unnecessary current to flow. (EN) It is possible to provide a coagulation forceps with a dissection function that can perform coagulation treatment on an intended tissue easily and reliably.

【０００７】[0007]

【課題を解決するための手段】本発明は、体腔内に挿入
される挿入部を有した操作部本体と、前記挿入部の先端
付近に設けられ、閉じることにより各把持面間に組織を
把持する把持部と、前記把持部で把持した組織を切離す
る切離手段とを備え、前記把持部は電気絶縁性の部材に
よって作られた開閉操作される複数の把持部材と、前記
把持部材に設けられ、前記把持面にのみ電極面を露出さ
せるように配置された凝固電極とを具備したことを特徴
とする切離機能付凝固鉗子である。According to the present invention, an operating section main body having an inserting section to be inserted into a body cavity and a tissue provided between the grasping surfaces by being provided near the distal end of the inserting section and being closed. And a cutting means for cutting the tissue gripped by the gripping part, the gripping part being a plurality of gripping members made of an electrically insulating member to be opened and closed, and the gripping member. A coagulation forceps with a separating function, comprising: a coagulation electrode provided so as to expose an electrode surface only on the gripping surface.

【０００８】[0008]

【発明の実施の形態】BEST MODE FOR CARRYING OUT THE INVENTION

（構成）図１は本発明の一実施形態に係る外科用鉗子１
の全体の外観を示す。この外科用鉗子１は体腔内に挿入
されるべき挿入部２を形成する中空の挿入パイプ３と、
この挿入パイプ３の基端側に連結される手元操作部４に
大別される。挿入パイプ３の先端部分には体腔内で組織
を把持、凝固止血するための先端把持部５が設けられ、
その挿入パイプ３には把持した組織を切離する切離手段
６が挿通されている。先端把持部５と切離手段６は手元
操作部４に設けた後述する如くの複数の機構によって操
作され、また同じく手元操作部４に設けられる給電接続
部を通じて必要な給電が行われるようになっている。(Structure) FIG. 1 is a surgical forceps 1 according to an embodiment of the present invention.
Shows the overall appearance of. This surgical forceps 1 includes a hollow insertion pipe 3 forming an insertion portion 2 to be inserted into a body cavity,
It is roughly divided into a hand operation part 4 connected to the proximal end side of the insertion pipe 3. The tip end portion of the insertion pipe 3 is provided with a tip grip portion 5 for gripping a tissue in a body cavity and stopping coagulation and bleeding.
A cutting means 6 for cutting the grasped tissue is inserted through the insertion pipe 3. The tip grip portion 5 and the disconnecting means 6 are operated by a plurality of mechanisms, which will be described later, provided in the hand operation portion 4, and necessary power is supplied through a power supply connection portion also provided in the hand operation portion 4. ing.

【０００９】ところで、外科用鉗子１は次のような部組
（ユニット）を単位として分解とそれらの再組立てがユ
ーザサイドで容易に行うことが可能な構造のものであ
る。つまり、図２で示されるように、挿入パイプ３に連
結した状態の手元操作部４と、前記切離手段６と、前記
先端把持部５を含む把持部本体８と、前記先端把持部５
を開閉操作するための中空の管状部材を有した開閉操作
体９の４つの部組に分解することが可能であるととも
に、分解された各部組を再び図１に示すような組付け状
態に直ちに組み立てることが可能な構成になっている。By the way, the surgical forceps 1 has such a structure that the user can easily disassemble and reassemble them in units of the following units. That is, as shown in FIG. 2, the hand operation unit 4 connected to the insertion pipe 3, the separation unit 6, a grip unit main body 8 including the distal grip unit 5, and the distal grip unit 5.
Can be disassembled into four sets of an opening and closing operation body 9 having a hollow tubular member for opening and closing operations, and the disassembled sets are immediately returned to an assembled state as shown in FIG. It has a structure that can be assembled.

【００１０】図３（ａ）は、先端把持部５を開閉操作す
るための開閉操作体９を示し、図３（ｂ）は切離手段６
を示している。また、図４乃至図１４は先端把持部５を
含む把持部本体８を示している。前記切離手段６は前記
把持部本体８の内腔内にその軸方向に沿って挿入され
る。把持部本体８の外周には開閉操作体９が被嵌され
る。この組付け状態で切離手段６と把持部本体８と開閉
操作体９が挿入パイプ３から挿入されて手元操作部４に
おけるそれぞれの操作手段に組付け装着されるようにな
っている。FIG. 3 (a) shows an opening / closing operation body 9 for opening / closing the distal end gripping portion 5, and FIG.
Is shown. 4 to 14 show the gripper body 8 including the distal gripper 5. The separating means 6 is inserted into the lumen of the gripper body 8 along its axial direction. An opening / closing operation body 9 is fitted around the outer periphery of the gripper body 8. In this assembled state, the separating means 6, the gripper main body 8, and the opening / closing operation body 9 are inserted from the insertion pipe 3 and are mounted and attached to the respective operating means in the hand operation unit 4.

【００１１】前記手元操作部４には把持操作機構部１１
と給電接続部１２と切離操作部１３の各操作手段が設け
られ、さらに操作選択機構部１４が設けられている。把
持操作機構部１１と給電接続部１２及び切離操作部１３
は手元操作部４の中心軸に沿って前記挿入パイプ３と同
軸的に１列に並べて配置され、一方、操作選択機構部１
４は手元操作部４の中心軸の下方へ位置し他の機構部に
隣接する状態で配置されている。A gripping operation mechanism section 11 is provided in the hand operation section 4.
Each of the operation means of the power supply connection section 12 and the disconnection operation section 13 are provided, and the operation selection mechanism section 14 is further provided. Gripping operation mechanism section 11, power supply connection section 12, and separation operation section 13
Are arranged side by side in a line coaxially with the insertion pipe 3 along the central axis of the hand operation unit 4, while the operation selection mechanism unit 1
Reference numeral 4 is located below the central axis of the hand-side operation portion 4 and is arranged adjacent to the other mechanical portion.

【００１２】次に、これらの各機構部分を具体的に説明
する。図２で示すように前記挿入パイプ３の後端には操
作部本体１５の１つの部材としての筒状部材からなる第
１支持部材１６が固定的に取着されており、この第１支
持部材１６には固定的に設置される第２支持部材１７が
連結されている。第２支持部材１７は手元操作部４の中
心軸から下方へ偏位して手元操作部４の中心軸と平行な
中間部分１７ａとその両端に形成された屈曲部１７ｂ，
１７ｃとから成り、鉗子１の側面から見てその全体が略
コの字型の形状となっている。第２支持部材１７の一方
の屈曲部１７ｂは前記第１支持部材１６に取着固定さ
れ、他方の屈曲部１７ｃは給電接続部１２の部材を回転
自在に保持している。第２支持部材１７は給電接続部１
２を第１支持部材１６に対して一定の間隔をもって鉗子
１の軸方向には位置決めするとともに、その軸上で回転
可能に保持している。Next, each of these mechanisms will be described in detail. As shown in FIG. 2, at the rear end of the insertion pipe 3, a first support member 16 made of a tubular member as one member of the operation section main body 15 is fixedly attached. A second support member 17 fixedly installed is connected to 16. The second support member 17 is displaced downward from the central axis of the hand operation unit 4 and has an intermediate portion 17a parallel to the central axis of the hand operation unit 4 and bent portions 17b formed at both ends thereof.
17c, and has a substantially U-shape as a whole when viewed from the side of the forceps 1. One bent portion 17b of the second support member 17 is fixedly attached to the first support member 16, and the other bent portion 17c rotatably holds the member of the power supply connection portion 12. The second support member 17 is connected to the power supply connection portion 1.
2 is positioned in the axial direction of the forceps 1 at a fixed interval with respect to the first support member 16, and is rotatably held on the axis.

【００１３】次に、図４ないし図１４を参照して把持部
本体８の構成を説明する。すなわち、この把持部本体８
は硬性な材料によって形成された中空のロッド部４０を
有しており、このロッド部４０の先端側部分には２本の
線状の弾性部材４１によってそれぞれ保持された２つの
把持部材４２ａ，４２ｂを設けて前記先端把持部５を構
成している。弾性部材４１は２つの把持部材４２ａ，４
２ｂを拡開する向きへ弾性的に付勢している。さらに、
把持部本体８にはそのロッド部４０の先端側部分に２つ
の把持部材４２ａ，４２ｂの把持面４３と平行な向きに
左右それぞれに突出する突起４４ａを有するナイフガイ
ド４４を設けられている。Next, the configuration of the gripper body 8 will be described with reference to FIGS. That is, this gripper body 8
Has a hollow rod portion 40 formed of a hard material, and has two gripping members 42a and 42b held by two linear elastic members 41 at the distal end portion of the rod portion 40, respectively. Are provided to constitute the distal end gripping portion 5. The elastic member 41 includes two gripping members 42a, 4
2b is elastically urged in a direction to expand. further,
The gripper main body 8 is provided with a knife guide 44 having protrusions 44a protruding left and right in directions parallel to the gripping surfaces 43 of the two gripping members 42a and 42b at the distal end portion of the rod portion 40.

【００１４】また、ロッド部４０の手元側端にはそれぞ
れ円管状の導電性部材からなる２つの電気接続部４５，
４６が間隔をおいて備えられている。このとき、２つの
電気接続部４５，４６のうち少なくとも１つのものの外
周には給電接続部７の後述する固定ねじ１２７に係合す
る切欠き平坦部４８が形成されている。この実施形態で
は前方に位置する１つの電気接続部４５の周面に切欠き
平坦部４８を形成してある。At the proximal end of the rod portion 40, two electric connection portions 45, each formed of a tubular conductive member, are provided.
46 are provided at intervals. At this time, a notched flat portion 48 is formed on the outer periphery of at least one of the two electric connection portions 45 and 46 so as to be engaged with a fixing screw 127 described later of the power supply connection portion 7. In this embodiment, a notch flat portion 48 is formed on the peripheral surface of one electric connection portion 45 located forward.

【００１５】図５で示すように、２つの把持部材４２
ａ，４２ｂをそれぞれ支持する弾性部材４１はそれぞれ
導電性部材４９に絶縁被覆５０を施してなるものであ
る。この弾性部材４１に保持される２つの把持部材４２
ａ，４２ｂは例えばポリエーテルエーテルケトン（ＰＥ
ＥＫ）等の電気的絶縁性を有する樹脂から成り、これは
図６及び図７で示すように先端側部分を残して前記切離
手段６の先端切離部分が挿入されるスリット５１を形成
することにより平面から見て図６で示すように略Ｕ字状
に形成されている。また、スリット５１の両サイドの部
分にはそのスリット５１の途中の後端側部分からスリッ
ト５１の最先端位置よりも前方に達する位置まで軸方向
に沿って平行に配置される導電性材質の板状の凝固電極
５２がそれぞれ埋設されている。そして、これらの凝固
電極５２はその一部の電極端面のみを把持面４３に僅か
に突出した状態で露出させている。電極端面以外の部分
は把持部材４２ａ，４２ｂによって覆われており、把持
部材の外面部に露出することはないように設置されてい
る。As shown in FIG. 5, two gripping members 42 are provided.
The elastic members 41 supporting the members a and 42b are respectively formed by applying an insulating coating 50 to a conductive member 49. Two grip members 42 held by the elastic member 41
a and 42b are, for example, polyetheretherketone (PE
EK) or the like, which is formed of a resin having an electrical insulation property, and forms a slit 51 into which the cutting-off portion of the cutting means 6 is inserted except for the cutting-end portion, as shown in FIGS. Thus, as shown in FIG. 6, when viewed from a plane, it is formed in a substantially U-shape. A plate made of a conductive material is disposed on both sides of the slit 51 in a direction parallel to the axial direction from a rear end portion in the middle of the slit 51 to a position forward of the most distal position of the slit 51. Each of the coagulated electrodes 52 is embedded. And, these coagulation electrodes 52 are exposed in a state in which only a part of their electrode end faces is slightly projected to the gripping face 43. The portions other than the electrode end faces are covered with the holding members 42a and 42b, and are installed so as not to be exposed on the outer surface of the holding members.

【００１６】図７で示すように、一対の把持部材４２
ａ，４２ｂの一方に設けられた凝固電極５２は把持部材
４２ａ，４２ｂが閉じたとき、他方の把持部材４２ａ，
４２ｂに設けられた凝固電極５２に対してそれぞれ対向
一致して、その露出する電極端面が近接して接触するこ
となく向き合う。このため、把持部材４２ａ，４２ｂを
閉じたとき、極性の異なる凝固電極５２が直接に接触さ
せた状態で電流を流した場合に高周波電源に過負荷を与
え、破損させる危険を回避できる。また、図６で示すよ
うに各凝固電極５２は把持部材４２ａ，４２ｂ内におい
て対応する前記弾性部材４１の導電性部材４９に対して
電気的かつ機械的に接続されている。As shown in FIG. 7, a pair of gripping members 42
When the gripping members 42a, 42b are closed, the coagulation electrode 52 provided on one of the gripping members 42a, 42b,
The exposed electrode end faces are opposed to each other so as to face the coagulation electrodes 52 provided at 42b, and face each other without coming into contact with each other. Therefore, when the gripping members 42a and 42b are closed, when a current flows while the coagulation electrodes 52 having different polarities are in direct contact with each other, it is possible to avoid a risk of overloading the high-frequency power supply and causing damage. As shown in FIG. 6, each coagulation electrode 52 is electrically and mechanically connected to the corresponding conductive member 49 of the elastic member 41 in the holding members 42a and 42b.

【００１７】また、把持部材４２ａ，４２ｂにおける把
持面４３には組織を噛んで捕らえるための突起５４とこ
の突起５４を受け入れるための溝５５が対応的に噛み合
うように設けられており、この突起５４と溝５５は、特
に図７に示すように各把持部材４２ａ，４２ｂが閉じた
とき、前記凝固電極５２同志が接触する前に接触し、凝
固電極５２同士が直接に接触するのを防ぐように配設さ
れている。さらに図８に示すように、把持部材４２ａ，
４２ｂが閉じたとき、その合わさった両先端部分の高さ
Ｈは切離手段６の先端部の高さｈよりも高くなるよう設
計されている。The gripping surfaces 43 of the gripping members 42a and 42b are provided with a projection 54 for gripping and capturing tissue and a groove 55 for receiving the projection 54 so as to mesh with each other. The groove 55 contacts the coagulation electrodes 52 before they come into contact with each other, particularly when the gripping members 42a and 42b are closed as shown in FIG. 7, so as to prevent the coagulation electrodes 52 from directly contacting each other. It is arranged. Further, as shown in FIG. 8, the gripping members 42a,
When the opening 42b is closed, the height H of the combined front ends is designed to be higher than the height h of the front end of the separating means 6.

【００１８】前記ナイフガイド４４は図９及び図１０に
示すように１つの内腔５６を有しており、左右それぞれ
に突出する突起４４ａを含め、その断面形状が略十字型
を成している。特に図１０に示すように、ナイフガイド
４４の後端部分が、ロッド部４０の先端筒部５７に嵌め
込まれて位置決めされる状態で接続されている。前記各
弾性部材４１がその先端筒部５７内の４つの隅の各空間
内に個別的にそれぞれ配置されている。The knife guide 44 has a single bore 56 as shown in FIGS. 9 and 10, and the cross-sectional shape of the knife guide 44, including the protrusions 44a projecting right and left, has a substantially cross shape. . In particular, as shown in FIG. 10, the rear end portion of the knife guide 44 is connected in a state of being fitted and positioned in the distal end tubular portion 57 of the rod portion 40. Each of the elastic members 41 is individually arranged in each of the four corners in the distal end tubular portion 57.

【００１９】前記ロッド部４０は電気的絶縁性で硬性な
材料によって形成された絶縁パイプ５９を主体として構
成されており、図１２で示すように絶縁パイプ５９には
その中心軸上に貫通された内腔６１と中心軸に平行して
独立して貫通された４つの内腔６２が形成されている。
そして、絶縁パイプ５９の先端部付近での周辺の４つの
内腔６２には絶縁被覆５０を施した状態のままの弾性部
材４１が差し込まれている。また、図５で示すように各
弾性部材４１の導電性部材４９は導電性の接続パイプ部
材５８を介して絶縁被覆電線６３に接続され、絶縁被覆
電線６３はそれの内腔６２に挿通されている。The rod portion 40 is mainly composed of an insulating pipe 59 made of an electrically insulating and hard material. As shown in FIG. 12, the rod portion 40 penetrates the insulating pipe 59 on its central axis. The lumen 61 and four lumens 62 penetrated independently in parallel with the central axis are formed.
The elastic members 41 with the insulating coating 50 applied are inserted into the four inner cavities 62 near the distal end of the insulating pipe 59. Further, as shown in FIG. 5, the conductive member 49 of each elastic member 41 is connected to the insulated wire 63 through a conductive connection pipe member 58, and the insulated wire 63 is inserted into the inner cavity 62 thereof. I have.

【００２０】図１３で示すようにロッド部４０の絶縁パ
イプ５９の後端にはその絶縁パイプ５９のものと同様に
配置された中心の内腔６１と周辺の４つの内腔６２を有
する導電性材質から成る第１電極部材６５が連結されて
いる。この第１電極部材６５の後端には第１電極部材６
５と同様に中心の内腔６１と、前記第１電極部材６５に
設けられた４つの内腔６２のうちの２つの内腔と同様に
配置された貫通穴６７を有する絶縁スペーサ６６が連結
されている。また、図１４で示すように絶縁スペーサ６
６の後端には絶縁スペーサ６６と同様に中心軸上の内腔
６１と導電性材質から成る第２電極部材６８が連結され
ている。この第２電極部材６８の後端には１つの中心軸
上に配設された内腔６１を有する絶縁材質から成るおさ
え部材６９が連結されている。そして、第１電極部材６
５は電気接続部４５を構成し、第２電極部材６８は電気
接続部４６を構成する。As shown in FIG. 13, at the rear end of the insulating pipe 59 of the rod portion 40, there is provided a conductive tube having a central lumen 61 and four peripheral lumens 62 arranged similarly to the insulating pipe 59. A first electrode member 65 made of a material is connected. A first electrode member 6 is provided at the rear end of the first electrode member 65.
5, the central lumen 61 and the insulating spacer 66 having the through holes 67 arranged in the same manner as the two lumens of the four lumens 62 provided in the first electrode member 65 are connected. ing. In addition, as shown in FIG.
Similarly to the insulating spacer 66, the inner cavity 61 on the central axis and the second electrode member 68 made of a conductive material are connected to the rear end of the member 6. A holding member 69 made of an insulating material and having a lumen 61 disposed on one central axis is connected to the rear end of the second electrode member 68. Then, the first electrode member 6
Reference numeral 5 constitutes the electrical connection portion 45, and the second electrode member 68 constitutes the electrical connection portion 46.

【００２１】また、図１８で示すように第１電極部材６
５は固定ねじ１２７および導電部材１２１を介して電源
コード接続ピン１２４に導通され、一方、第２電極部材
４６は第２導電部材１２２を介して電源コード接続ピン
１２５に導通される。４つのユニットが組付けられたと
き、一方の組の凝固電極５２は電源コード接続ピン１２
４と、残りの組の凝固電極５２は電源コード接続ピン１
２５と各々電気的に導通される。Further, as shown in FIG.
5 is electrically connected to the power cord connecting pin 124 via the fixing screw 127 and the conductive member 121, while the second electrode member 46 is electrically connected to the power cord connecting pin 125 via the second conductive member 122. When the four units are assembled, one of the coagulation electrodes 52 is connected to the power cord connection pin 12.
4 and the remaining set of coagulation electrodes 52
25 are electrically connected to each other.

【００２２】ところで、ロッド部４０を構成する各部材
に設けられた中心軸上の内腔６１は同一直線上に並び、
ロッド部４０の先端から後端まで貫通するチャンネル７
０として機能する。そのチャンネル７０の後端には体腔
内のガスが体外に漏れるのを防ぐためにＯリング７１が
配設されている。Ｏリング７１は前記おさえ部材６９に
よって保持されている。By the way, the lumens 61 on the central axis provided in each member constituting the rod portion 40 are aligned on the same straight line,
Channel 7 penetrating from the front end to the rear end of rod part 40
Functions as 0. An O-ring 71 is provided at the rear end of the channel 70 to prevent gas in the body cavity from leaking out of the body. The O-ring 71 is held by the holding member 69.

【００２３】さらに、ロッド部４０の各部材に配設され
た複数の中心軸に平行な内腔６２及び貫通穴６７も互い
に連通しており、ロッド部４０の先端から後端付近まで
続く４つのルーメンとなり、各ルーメンにはその両端部
以外が絶縁被覆され、一端が図５で示す前記接続パイプ
部材５８を介して前記弾性部材４１に対して電気的及び
機械的に接続された絶縁被覆電線６３が挿通されてい
る。この４本の電線６３のうち弾性部材４１を介して一
方の把持部材４２ａに設けられた２つの凝固電極５２に
電気的に導通している２本の電線６３の他端は第１電極
部材６５に接続され、残りの凝固電極５２に電気的に導
通している２本の電線６３の他端は第２電極部材６８に
接続されている。Further, a plurality of lumens 62 and through holes 67 parallel to the central axis provided in each member of the rod portion 40 are also in communication with each other. An insulated wire 63 in which each of the lumens is insulated except at both ends, and one end of which is electrically and mechanically connected to the elastic member 41 via the connection pipe member 58 shown in FIG. Is inserted. Of the four electric wires 63, the other ends of the two electric wires 63 that are electrically connected to the two coagulation electrodes 52 provided on the one holding member 42a via the elastic member 41 have the first electrode member 65 at the other end. And the other ends of the two electric wires 63 electrically connected to the remaining coagulation electrode 52 are connected to the second electrode member 68.

【００２４】次に、開閉操作体９について説明する。図
３（ａ）で示すように、開閉操作体９は前記把持部本体
８のロッド部４０が挿通される内腔７５を有するパイプ
状の部材で形成されている。開閉操作体９の先端部９ａ
ではその内腔７５の内径が僅かに大きくなっており、そ
の先端縁は前記把持部材４２ａ，４２ｂの外面とスムー
ズに係合するようテーパ状となっている。開閉操作体９
の先端部９ａには前記把持部本体８の先端側に設けられ
ている突起４４ａが係合するすり割り溝（スリット）７
６が形成されている。開閉操作体９の後端側には後述す
る把持操作機構部１１の開閉操作用スライダ９１の後側
開口部に係合する突起７７を有したスナップフィット機
構が設けられ、そのスナップフィット機構を介して開閉
操作体９の操作手段に接続されている。また、突起７７
を形成した弾性部７８より先端側に位置して開閉操作体
９には前記開閉スライダ９１に設けられた長孔１０３の
直線状部分に係合する平面部７９が配設されている。こ
のとき、すり割り溝７６と平面部７９は図３（ａ）に示
す同じ向きの位置関係に決められている。Next, the opening and closing operation body 9 will be described. As shown in FIG. 3 (a), the opening / closing operation body 9 is formed of a pipe-shaped member having a lumen 75 through which the rod portion 40 of the gripper body 8 is inserted. Tip 9a of opening / closing operation body 9
In this case, the inner diameter of the inner cavity 75 is slightly larger, and the leading edge is tapered so as to smoothly engage with the outer surfaces of the gripping members 42a and 42b. Opening / closing body 9
The slot 9 is engaged with a projection 44a provided on the tip side of the gripping body 8 at the tip end 9a of the gripping part body 8.
6 are formed. On the rear end side of the opening / closing operation body 9, there is provided a snap-fit mechanism having a projection 77 which engages with a rear opening of the opening / closing operation slider 91 of the gripping operation mechanism section 11 described later. Connected to the operating means of the opening and closing operation body 9. Also, the protrusion 77
The opening / closing operation body 9 is provided with a flat portion 79 which is engaged with a linear portion of the elongated hole 103 provided in the opening / closing slider 91 at a position closer to the distal end side than the elastic portion 78 formed. At this time, the slot 76 and the flat portion 79 are determined to have the same positional relationship as shown in FIG.

【００２５】前記切離手段６は図３（ｂ）で示すように
構成されている。切離手段６は先端に刃付けがなされた
ナイフ部材８１と、絶縁材からなるナイフ固定部材８２
と、絶縁材からなるチューブ８０にて絶縁被覆されたナ
イフロッド８３と、ナイフスライダのナイフ固定ねじに
係合するために両面を平坦な切欠き部８４を配設したナ
イフ接続部材８５とで切離手段が構成されている。The separating means 6 is configured as shown in FIG. The separating means 6 is composed of a knife member 81 having a sharpened tip, and a knife fixing member 82 made of an insulating material.
And a knife rod 83 which is insulated with a tube 80 made of an insulating material, and a knife connecting member 85 provided with a flat notch 84 on both sides for engaging the knife fixing screw of the knife slider. A separating means is configured.

【００２６】次に、手元操作部４における把持操作機構
部１１、給電接続部１２、切離操作部１３及び操作選択
機構部１４について説明する。まず、図１６を参照し
て、開閉操作体９を操作する手段の把持操作機構部１１
について説明する。把持操作機構部１１は筒状の開閉ス
ライダ９１を設けてなり、開閉スライダ９１はその先端
側部分をスライダ嵌合部９２として、これを手元操作部
４の第１支持部材１６に設けられた内腔９３に対して嵌
合し、これにより回転及び軸方向へ進退可能な如く設け
られている。この開閉スライダ９１はスライダ支持部材
９５で回転自在に保持される。つまり、開閉スライダ９
１の外周には環状溝９６が形成され、この環状溝９６に
対して環状部材からなるスライダ支持部材９５が被嵌し
ている。つまり、開閉スライダ９１はスライダ支持部材
９５に対してその軸方向には相対的に移動しないように
固定されるが、その軸を中心とする回転が可能である。
このとき、前記第１支持部材１６の内腔９３とスライダ
９１との間には気密用の０リング（図示せず）を配設
し、その間の部分の気密が保たれるようになっている。Next, the grip operation mechanism 11, the power supply connection 12, the disconnection operation 13 and the operation selection mechanism 14 in the hand operation unit 4 will be described. First, referring to FIG. 16, the grip operation mechanism 11 of the means for operating the opening / closing operation body 9 will be described.
Will be described. The gripping operation mechanism portion 11 is provided with a tubular opening / closing slider 91, and the opening / closing slider 91 has a tip end side portion as a slider fitting portion 92, which is provided in the first support member 16 of the hand operation portion 4. It is fitted in the cavity 93 so that it can rotate and advance and retreat in the axial direction. The opening / closing slider 91 is rotatably held by a slider support member 95. That is, the open / close slider 9
An annular groove 96 is formed on the outer periphery of the slider 1, and a slider support member 95 made of an annular member is fitted in the annular groove 96. That is, the opening / closing slider 91 is fixed so as not to move relative to the slider supporting member 95 in the axial direction, but can rotate about the axis.
At this time, an O-ring (not shown) for airtightness is provided between the inner cavity 93 of the first support member 16 and the slider 91 so that the airtightness of the portion therebetween is maintained. .

【００２７】スライダ支持部材９５にはラチェット爪９
７が取付け固定されており、ラチェット爪９７にはスラ
イダ支持部材９５の方へ付勢された状態で、かつ第２支
持部材１７に枢着されたラチェット９８に設けられた複
数の溝９９に係合する戻り止め機構が構成されている。
図２に示すように、ラチェット９８は板ばね１００によ
って上述した向きへ弾性的に付勢されている。ラチェッ
ト９８の解除操作部９８ａは手元操作部４の第１支持部
材１６の下側に位置して配置されている。A ratchet claw 9 is provided on the slider support member 95.
7 is attached and fixed to the ratchet pawl 97 and is engaged with a plurality of grooves 99 provided in a ratchet 98 pivotally attached to the second support member 17 while being biased toward the slider support member 95. A matching detent mechanism is configured.
As shown in FIG. 2, the ratchet 98 is elastically biased in the above-described direction by a leaf spring 100. The release operation part 98 a of the ratchet 98 is located below the first support member 16 of the hand operation part 4.

【００２８】前記開閉操作用スライダ９１は手元操作部
４の第１支持部材１６における内腔９３と同軸的な内腔
１０１を有しており、その一部分には図１７に示すよう
に真円ではなく、直線部分１０２を含む長孔１０３とな
っており、その長孔１０３の部分の付近の周辺には、術
者の例えば人指し指を当る窪み１０４ａと突部１０４ｂ
とが交互に複数形成した指当て部１０４が設けられてい
る。この指当て部１０４によって開閉操作用スライダ９
１に対して回転トルクを効率的に与える操作を行うこと
ができる。指当て部１０４における窪み１０４ａと突部
１０４ｂはその深さと長さが異なる２種のものがあり、
その配置は前記長孔１０３の向きに対して任意ではな
く、一義的に決められ、術者はその指当て部１０４の配
置状態で長孔１０３の向き、つまり、この長孔１０３に
係合する開閉操作体９の平面部７９の向き、従って、回
転自在な開閉操作体９の現在の向きが認識できるように
なっている。The opening / closing slider 91 has an inner cavity 101 coaxial with the inner cavity 93 of the first support member 16 of the hand-side operation section 4, and a part thereof is not a perfect circle as shown in FIG. Instead, a long hole 103 including a straight line portion 102 is formed. Around the vicinity of the long hole 103 portion, for example, a depression 104a for hitting the index finger of the operator and a protrusion 104b
Are provided alternately. The opening and closing operation of the slider 9 is performed by the finger rest 104.
1 can be operated to efficiently apply a rotational torque. There are two types of depressions 104a and protrusions 104b in the finger rest 104, which have different depths and lengths.
The arrangement is not arbitrary with respect to the direction of the long hole 103, but is uniquely determined. The operator engages with the long hole 103 in the direction of the long hole 103 in the arrangement state of the finger pad 104. The direction of the flat portion 79 of the opening / closing operation body 9, that is, the current direction of the rotatable opening / closing operation body 9, can be recognized.

【００２９】さらに、開閉操作用スライダ９１の手元側
端には図１６で示すように体腔内の気腹ガスが体外へ流
出するのを防ぐためのゴムキャップ１０５が着脱自在に
被着配設される。このゴムキャップ１０５は前記開閉操
作体９の突起７７の部分を含めて気密的に包囲するよう
になっている。図４に示すように把持部本体８が組付け
られると、その開閉操作体９と突起７７は内側へ移動す
ることが不可能となり、開閉操作体９が外されることは
なくなる。Further, as shown in FIG. 16, a rubber cap 105 for preventing insufflation gas in the body cavity from flowing out of the body is detachably attached to the proximal end of the opening / closing operation slider 91 as shown in FIG. You. The rubber cap 105 hermetically surrounds the projection 77 of the opening / closing operation body 9 as well. When the gripper body 8 is assembled as shown in FIG. 4, the opening / closing operation body 9 and the projection 77 cannot move inward, and the opening / closing operation body 9 is not removed.

【００３０】一方、手元操作部４の第１支持部材１６
と、開閉操作用スライダ９１との間にはＵ字型の単一板
ばね部材から成るハンドル１１１が架設されている。ハ
ンドル１１１の一端は第１支持部材１６に前記第２支持
部材１７を介して固定されており、ハンドル１１１の他
端はスライダ支持部材９５に対して枢着されている。そ
して、ハンドル１１１の弾性付勢力によって後方の手元
側へ退避する向きに開閉操作用スライダ９１を弾性的に
付勢する。On the other hand, the first support member 16 of the hand operation section 4
A handle 111 formed of a U-shaped single leaf spring member is provided between the opening and closing slider 91. One end of the handle 111 is fixed to the first support member 16 via the second support member 17, and the other end of the handle 111 is pivotally attached to the slider support member 95. Then, the opening / closing operation slider 91 is elastically urged by the elastic urging force of the handle 111 so as to be retracted to the rear hand side.

【００３１】図１８で示すように前記給電接続部１２は
構成されている。すなわち、この給電接続部１２は例え
ばポリスルホン等の絶縁性を有する材質から成る接続部
本体１１５を備える。この接続部本体１１５には手元操
作部４の中心軸に対して同軸的な内腔１１６を有してい
る。この内腔１１６には把持部本体８のロッド部４０が
差し込まれるようになっている。また、その把持部本体
８に挿通した切離手段６のナイフロッド８３の後端側部
分を貫通させている。As shown in FIG. 18, the power supply connection section 12 is configured. That is, the power supply connection portion 12 includes a connection portion main body 115 made of an insulating material such as polysulfone. The connection portion main body 115 has a lumen 116 coaxial with the central axis of the hand operation portion 4. The rod portion 40 of the gripper body 8 is inserted into the lumen 116. Further, the rear end portion of the knife rod 83 of the separating means 6 inserted through the grip portion main body 8 is penetrated.

【００３２】この接続部本体１１５には把持部本体８の
電気接続部４５，４６の間隔に対応した間隔を前後に設
け、その一部を前記内腔１１６に僅かに突出して露出さ
せた状態で内蔵された導電性材質のものから成る第１導
電部材１２１と第２導電部材１２２が設置されている。
さらに接続部本体１１５には前記各導電部材１２１，１
２２に対してそれぞれ個別的にその先端部をねじ込んで
機械的及び電気的に接続した２本の電源コード接続ピン
１２４，１２５が植設されている。電源コード接続ピン
１２４，１２５の根元部分は電気的絶縁材から成るカバ
ー１２６で覆われており、接続部本体１１５の外面から
突出する電源コード接続ピン１２４，１２５の先端部分
はそのまま導電部分が露出している。In this connection part main body 115, a space corresponding to the space between the electric connection parts 45 and 46 of the grip part body 8 is provided in the front and rear, and a part thereof is slightly projected into the lumen 116 and is exposed. A first conductive member 121 and a second conductive member 122 made of a built-in conductive material are provided.
In addition, the conductive member 121, 1
Two power cord connection pins 124 and 125 are mechanically and electrically connected to each other by screwing the tip end of each of the power cords 22 and 22 individually. The root portions of the power cord connection pins 124 and 125 are covered with a cover 126 made of an electrically insulating material, and the conductive portions of the power cord connection pins 124 and 125 protruding from the outer surface of the connection portion main body 115 are directly exposed. doing.

【００３３】また、２本の電源コード接続ピン１２４，
１２５と対応する前記導電部材１２１，１２２の少なく
とも一方にはそれの電源コード接続ピン１２４，１２５
と対称な位置で把持部本体用固定ねじ１２７が設けられ
ている。固定ねじ１２７は導電部材１２１にねじ込み可
能な金属製のねじ部１２８と絶縁性を有する絶縁性つま
み１２９から成る。そして、固定ねじ１２７をねじ込む
ことによりねじ部１２８の平坦な先端面を、前述した把
持部本体８の中空のロッド部４０における切欠き平坦部
４８に押し当てて、把持部本体８と接続部本体１１５を
機械的に固定し、同時に前記把持部本体８の電気接続部
４５，４６に導電部材１２１，１２２を接触させて電気
的に接続するようになっている。第２導電部材１２２の
内径は接続部本体１１５及び第１導電部材１２１の内径
よりも必ず小さくなるよう設計されているので、第２電
極部材１２２は鉗子固定ねじ１２７の締め付けによって
必ず第２導電部材１２２に接触する。The two power cord connection pins 124,
At least one of the conductive members 121 and 122 corresponding to the power cord 125 has a power cord connecting pin 124 or 125 thereof.
The fixing screw 127 for the gripping part main body is provided at a position symmetrical to the above. The fixing screw 127 includes a metal screw portion 128 that can be screwed into the conductive member 121 and an insulating knob 129 having an insulating property. Then, by screwing the fixing screw 127, the flat tip end surface of the screw portion 128 is pressed against the notched flat portion 48 in the hollow rod portion 40 of the grip portion body 8 described above, and the grip portion body 8 and the connection portion body. 115 is mechanically fixed, and at the same time, the conductive members 121 and 122 are brought into contact with the electric connection portions 45 and 46 of the grip body 8 to electrically connect them. Since the inner diameter of the second conductive member 122 is designed to be always smaller than the inner diameters of the connecting portion main body 115 and the first conductive member 121, the second electrode member 122 is necessarily tightened by the forceps fixing screw 127. Touch 122.

【００３４】この接続部本体１１５の後端部外周には比
較的小径の雄ねじ部１３１が形成され、雄ねじ部１３１
には切離操作部１３のガイド部材１３２の前端部に形成
した被嵌部１３３をねじ込み固定している。また、接続
部本体１１５の後端外周部には雄ねじ部１３１より中間
部側に隣接して小径段部１３４を形成し、小径段部１３
４に前述した第２支持部材１７の屈曲部１７ｃに連結し
た環状部材１３５を摺動自在に被嵌している。このた
め、第２支持部材１７に対して接続部本体１１５は相対
的に軸方向へ移動することなく回転自在である。前記被
嵌部１３３は第２支持部材１７の環状部材１３５が抜け
ることを防止する。A relatively small-diameter male screw portion 131 is formed on the outer periphery of the rear end portion of the connecting portion main body 115.
, A fitting portion 133 formed at the front end of the guide member 132 of the separating operation portion 13 is screwed and fixed. Further, a small-diameter stepped portion 134 is formed on the outer peripheral portion of the rear end of the connection portion main body 115 so as to be adjacent to the intermediate portion side from the male screw portion 131.
4, an annular member 135 connected to the bent portion 17c of the second support member 17 is slidably fitted. For this reason, the connection part main body 115 is rotatable without moving relative to the second support member 17 in the axial direction. The fitted portion 133 prevents the annular member 135 of the second support member 17 from coming off.

【００３５】図１９で示すように、切離操作部１３は前
記ガイド部材１３２にその軸方向へスライドするナイフ
スライダ１４２を設けている。ガイド部材１３２はその
軸方向に沿ってスリット１４１を形成し、ナイフスライ
ダ１４２は後述するねじ受け部材１４３とナイフ固定ね
じ１４４の先端をスリット１４１に係合し、ガイド部材
１３２上を軸方向にスライドするように設けられてい
る。このナイフスライダ１４２にはねじ受け部材１４３
とナイフ固定ねじ１４４がねじ込み装着されている。ね
じ受け部材１４３とナイフ固定ねじ１４４はそのナイフ
スライダ１４２の壁部を貫通して直線的に向き合う対称
的な位置で配設されている。ナイフスライダ１４２の前
後端にはそれぞれ鍔１４２ａが形成されている。また、
ねじ受け部材１４３とナイフ固定ねじ１４４の先端は互
いに向き合う平坦面１４３ａ，１４４ａが形成されてい
る。ねじ受け部材１４３は固定的に設置されており、ナ
イフ固定ねじ１４４はつまみ１４５によってねじ込み量
を選定することができる。そして、ねじ受け部材１４３
とナイフ固定ねじ１４４の互いに向き合う平坦面１４３
ａ，１４４ａの間で、前記切離手段６のナイフロッド８
３の切欠き部８４を挟み込むようになっている。このと
き、先端のナイフ部材８１またはナイフ固定部材８２は
ナイフガイド４４に挿入軸を中心とした回転方向に運動
するよう係合されている。ナイフ固定ねじ１４４を緩め
ればナイフロッド８３の固定を解除できる。As shown in FIG. 19, the separating operation section 13 has a knife slider 142 provided on the guide member 132 to slide in the axial direction. The guide member 132 forms a slit 141 along its axial direction, and the knife slider 142 engages a screw receiving member 143 and a tip of a knife fixing screw 144 described later with the slit 141 to slide on the guide member 132 in the axial direction. It is provided to be. This knife slider 142 has a screw receiving member 143.
And a knife fixing screw 144. The screw receiving member 143 and the knife fixing screw 144 penetrate through the wall portion of the knife slider 142, and are arranged at symmetrical positions that linearly face each other. A flange 142a is formed on each of the front and rear ends of the knife slider 142. Also,
The screw receiving member 143 and the tip of the knife fixing screw 144 have flat surfaces 143a and 144a facing each other. The screw receiving member 143 is fixedly installed, and the amount of screwing of the knife fixing screw 144 can be selected by a knob 145. Then, the screw receiving member 143
And flat surfaces 143 of the knife fixing screws 144 facing each other.
a, 144a, the knife rod 8 of the separating means 6
The third notch 84 is sandwiched therebetween. At this time, the knife member 81 or the knife fixing member 82 at the tip end is engaged with the knife guide 44 so as to move in the rotational direction around the insertion axis. By loosening the knife fixing screw 144, the fixing of the knife rod 83 can be released.

【００３６】なお、前記挿入パイプ３、第１支持部材１
６、開閉操作体９、把持部本体８、ガイド部材１３２の
各々に設けられている内腔は全て同一の軸上に配置され
る。また、把持部本体８と、固定ねじ１２７と、スリッ
ト１４１の回転方向の向きも図２に示される位置関係で
決められる。The insertion pipe 3, the first support member 1
6, the opening / closing operation body 9, the gripper body 8, and the guide members 132 are all arranged on the same axis. In addition, the orientation of the gripper body 8, the fixing screw 127, and the slit 141 in the rotation direction is also determined by the positional relationship shown in FIG.

【００３７】次に、操作選択機構部１４の構成について
説明する。第２支持部材１７の手元側部分には単一板ば
ね材から成るフック部材１５１の一端部分が固定されて
おり、このフック部材１５１の自由端部の先端は前記ス
ライダ支持部材９５を取着するハンドル１１１の一端部
に設けられた長孔１５２に対して係脱可能な状態で係合
するようなＪ型の鉤形状を成したフック部１５３となっ
ている。フック部材１５１の中間途中部分には小孔１５
４が形成されている。Next, the configuration of the operation selecting mechanism section 14 will be described. One end of a hook member 151 made of a single leaf spring material is fixed to the proximal portion of the second support member 17, and the tip of the free end of the hook member 151 is attached to the slider support member 95. A hook portion 153 having a J-shaped hook shape is formed so as to engage with a long hole 152 provided at one end of the handle 111 in a detachable manner. A small hole 15 is provided in the middle part of the hook member 151.
4 are formed.

【００３８】さらに、第２支持部材１７にはストップ選
択レバー１５６が旋回可能に設けられている。このスト
ップ選択レバー１５６は前記フック部材１５１の小孔１
５４に係合する突起１５５ａを先端に有した係脱アーム
端部１５５と後述するストップアーム端部１５７を設け
てなり、係脱アーム端部１５５と後述するストップアー
ム端部１５７は軸部１５８を中心として一体に回動する
ようになっている。Further, a stop selection lever 156 is provided on the second support member 17 so as to be pivotable. The stop selection lever 156 is connected to the small hole 1 of the hook member 151.
An engagement / disengagement arm end 155 having a projection 155a at the distal end engaging with the arm 54 and a stop arm end 157 described later are provided. The engagement / disengagement arm end 155 and a stop arm end 157 described later are provided with a shaft 158. It is designed to rotate integrally as a center.

【００３９】係脱アーム端部１５５が前記フック部材１
５１に並び、その突起１５５ａが前記フック部材１５１
の小孔１５４に係合する第１位置と、前記フック部材１
５１から突起１５５ａのある前記係脱アーム端部１５５
が退避する第２位置を択一的に選択可能であり、そし
て、第１位置にあるときには突起１５５ａがフック部材
１５１を押し上げ、フック部１５３がハンドル１１１の
長孔１５２に対して係合することができない位置に退避
させて待機させるとともに、ストップアーム端部１５７
がナイフスライダ１４２の前方の鍔１４２ａの前方への
移動領域に入り込み、そのナイフスライダ１４２の前方
へのスライドを防止する位置になるようになる。第２位
置にあるときには、そのフック部材１５１が自由とな
り、フック部１５３がハンドル１１１の長孔１５２に対
して係合可能となるとともに、ストップアーム端部１５
７がナイフスライダ１４２の前方の鍔１４２ａの前面領
域から退避し、そのナイフスライダ１４２の前方へのス
ライドを可能ならしめるようになる。The end portion 155 of the disengagement arm is connected to the hook member 1.
51, and the projections 155a of the hook members 151
First position for engaging the small hole 154 of the hook member 1 and the hook member 1
51. The disengagement arm end 155 having a projection 155a from
The retractable second position can be alternatively selected, and when in the first position, the protrusion 155a pushes up the hook member 151, and the hook portion 153 engages with the long hole 152 of the handle 111. To the position where it cannot be stopped,
Enters the forward movement region of the front flange 142a of the knife slider 142, and comes to a position where the knife slider 142 is prevented from sliding forward. When in the second position, the hook member 151 is free, the hook portion 153 can be engaged with the elongated hole 152 of the handle 111, and the stop arm end portion 15
7 retreats from the front area of the collar 142a in front of the knife slider 142, and allows the knife slider 142 to slide forward.

【００４０】開閉操作体９を操作部本体１５の内腔に挿
入し、図１６および図１７に示すように、その開閉操作
体９の後端側の突起７７と平面部７９が各々開閉スライ
ダ９１の後端開口部及び長孔１０３に係合することで、
開閉操作体９は開閉スライダ９１に対して挿入軸方向及
び挿入軸を中心とする回転方向に固定される。把持部本
体８は、図１６に示すように開閉操作体９の内腔７５を
経て給電接続部１２の内腔に挿入され、図１８に示すよ
うに固定ねじ１２７をねじ込み、その先端を切欠き平坦
部４８に係合させることで、給電接続部７に対して機械
的に固定される。The opening / closing operation body 9 is inserted into the inner cavity of the operation section main body 15, and as shown in FIGS. By engaging the rear end opening and the long hole 103,
The opening / closing operation body 9 is fixed to the opening / closing slider 91 in an insertion axis direction and a rotation direction about the insertion axis. The grip portion main body 8 is inserted into the lumen of the power supply connection portion 12 through the lumen 75 of the opening / closing operation body 9 as shown in FIG. 16, and a fixing screw 127 is screwed in as shown in FIG. By engaging with the flat part 48, it is mechanically fixed to the power supply connection part 7.

【００４１】さらに、把持部本体８は、その先端側で図
１５に示すようにナイフガイド４４の突起４４ａが開閉
操作体９の先端のすり割り溝７６に嵌まり込んで係合し
ており、開閉操作体９に対して回転方向にのみ固定され
る。Further, as shown in FIG. 15, the protrusion 44a of the knife guide 44 is fitted into and engaged with the slot 76 at the distal end of the opening / closing operation body 9, as shown in FIG. It is fixed to the opening / closing operation body 9 only in the rotation direction.

【００４２】（作用）図１で示すように、４つのユニッ
トが組立てられた状態での鉗子１ではその開閉操作用ス
ライダ９１に回転トルクを加えると、該スライダ９１に
直接又は間接的に回転方向に係合又は固定されている把
持部本体８、開閉操作体９、給電接続部１２、切離操作
部１３及び切離手段６の全体を、図２０に示すように挿
入パイプ３に対して独立して一体的に回転させることが
できる。(Operation) As shown in FIG. 1, in the forceps 1 in a state where four units are assembled, when a rotational torque is applied to the opening / closing operation slider 91, the rotation direction is directly or indirectly applied to the slider 91. As shown in FIG. 20, the gripper body 8, the opening / closing operation body 9, the power supply connection part 12, the separation operation part 13, and the whole separation means 6 engaged or fixed to the insertion pipe 3 are independent of the insertion pipe 3. And can be integrally rotated.

【００４３】また、図２１に示すように、ストップ選択
レバー１５６の係脱アーム端部１５５の突起１５５ａを
フック部材１５１上の小孔１５４に係合させ、そのフッ
ク部材１５１を長孔１５２に対して非係合な状態にある
第１位置のとき、ストップアーム端部１５７がナイフス
ライダ１４２の前方の鍔１４２ａの前面領域に入り込
み、ナイフスライダ１４２を前進させようとしても、そ
のストップ選択レバー１５６のストップアーム端部１５
７がそれを阻止するため、ナイフスライダ１４２を前進
移動させることができない。As shown in FIG. 21, the projection 155a of the engagement / disengagement arm end 155 of the stop selection lever 156 is engaged with the small hole 154 on the hook member 151, and the hook member 151 is inserted into the long hole 152. When the first position is in the disengaged state, the stop arm end 157 enters the front area of the flange 142a in front of the knife slider 142, and even if the knife slider 142 is advanced, Stop arm end 15
7 prevents the knife slider 142 from moving forward.

【００４４】一方では係脱アーム端部１５５が前記フッ
ク部材１５１に並び、その突起１５５ａが前記フック部
材１５１の小孔１５４に係合しているため、フック部材
１５１はハンドル１１１の長孔１５２から退避し、ハン
ドル１１１には係合していないため、ハンドル１１１の
作動が可能であり、そこで、ハンドル１１１を握り、上
端部を前方へスライドさせると、この動きに連動して開
閉操作用スライダ９１、開閉操作体９のみが前進し、開
閉操作体９の先端が２つの把持部材４２ａ，４２ｂの手
元端部分に押し当たり係合すると、その２つの把持部材
４２ａ，４２ｂは前後への動きを伴うことなく定位置で
互いに近付き閉じる。つまり、先端把持部５は前後への
動きを伴うことなく定位置で開閉させることができる。
また、把持部材４２ａ，４２ｂは弾性部材４１を介して
保持されているので、把持部材４２ａ，４２ｂの把持面
４３が極力平行な向きで把持対象物を閉じ込むように閉
じる。On the other hand, since the engagement / disengagement arm ends 155 are aligned with the hook members 151 and the projections 155a thereof are engaged with the small holes 154 of the hook members 151, the hook members 151 are disengaged from the long holes 152 of the handle 111. Since the handle 111 is retracted and is not engaged with the handle 111, the handle 111 can be operated. When the handle 111 is gripped and the upper end is slid forward, the opening / closing operation slider 91 is interlocked with this movement. When only the opening / closing operation body 9 moves forward and the tip of the opening / closing operation body 9 is pressed against and engaged with the proximal ends of the two gripping members 42a and 42b, the two gripping members 42a and 42b move forward and backward. Approach each other in place without closing. That is, the tip grip 5 can be opened and closed at a fixed position without moving back and forth.
Since the grip members 42a and 42b are held via the elastic member 41, the grip members 42a and 42b are closed so that the grip surfaces 43 of the grip members 42a and 42b are as parallel as possible.

【００４５】このとき、スライダ支持部材９５に取り付
けられた爪９７も合わせて前進し、図１６で示すラチェ
ット９８の溝９９に係合し、開閉操作用スライダ９１が
手元側へスライドしないよう、戻り止め作用が発揮す
る。At this time, the pawl 97 attached to the slider supporting member 95 also advances forward, engages with the groove 99 of the ratchet 98 shown in FIG. 16, and returns so that the opening / closing operation slider 91 does not slide toward the hand. The stopping effect is exhibited.

【００４６】通常、この把持部材４２ａ，４２ｂが閉じ
た状態で、鉗子１は図示しないトラカールを通じて体腔
内に挿入される。鉗子１の先端部が体腔内に挿入される
と術者はラチェット９８を図１６中矢印の方向に旋回さ
せ、爪９７と溝９９の係合を解除する。係合が解除され
ると、開閉操作用スライダ９１に接続されたハンドル１
１１の上端部は弾性力によって手元側へスライドし、そ
の開閉操作用スライダ９１と開閉操作体９も合わせて後
退する。このため、係合状態が解除され、把持部材４２
ａ，４２ｂは体腔内において再び弾性部部材４１によっ
て拡開する状態になる。Normally, the forceps 1 is inserted into the body cavity through a trocar (not shown) with the gripping members 42a and 42b closed. When the distal end of the forceps 1 is inserted into the body cavity, the operator turns the ratchet 98 in the direction of the arrow in FIG. 16 to release the engagement between the claw 97 and the groove 99. When the engagement is released, the handle 1 connected to the opening / closing operation slider 91
The upper end of the slider 11 slides toward the user's hand by elastic force, and the slider 91 for opening / closing operation and the opening / closing operation body 9 also retract. Therefore, the engagement state is released, and the gripping member 42 is released.
a and 42b are in a state of being expanded again by the elastic member 41 in the body cavity.

【００４７】術者は体腔内で切離しようと考える組織１
６１（特に血管を含み止血作業が必要と考えられるも
の）を例えば図２２に示すようにその開いた２つの把持
部材４２ａ，４２ｂの間に引き込み、把持部材４２ａ，
４２ｂを再度、前述したような操作によって図２３に示
すように閉じ、組織１６１を把持する。組織１６１を把
持した状態で鉗子１に高周波電流を供給すると、先端に
設けられた凝固電極５２間で電流が流れ、この電流によ
って生じる熱によって少なくとも図２４に示すように電
極周辺の組織部分１６２が凝固される。このように組織
１６１を凝固した後は図２５（ａ）に示すようにストッ
プ選択レバー１５６のストップアーム端部１５７を、矢
印ａの方向に旋回させると、係脱アーム端部１５５の突
起１５５ａが小孔１５４より外され、ナイフスライダ１
４２は前方へスライドされ、切離手段６の先端に設けら
れたナイフ部材８１も前進し、スリット５１を通って図
２８で示す組織凝固部１６２の間の部分を切離する。The tissue that the surgeon intends to cut in the body cavity 1
For example, as shown in FIG. 22, 61 (especially one including a blood vessel, which is considered to be necessary for hemostasis) is drawn between the two open gripping members 42a and 42b,
42b is closed again by the above-described operation as shown in FIG. 23, and the tissue 161 is grasped. When a high-frequency current is supplied to the forceps 1 while the tissue 161 is grasped, a current flows between the coagulation electrodes 52 provided at the distal end, and the heat generated by this current causes at least the tissue portion 162 around the electrodes to appear as shown in FIG. Coagulated. After the tissue 161 is coagulated in this way, when the stop arm end 157 of the stop selection lever 156 is turned in the direction of arrow a as shown in FIG. 25A, the protrusion 155a of the engagement / disengagement arm end 155 becomes Removed from small hole 154, knife slider 1
Reference numeral 42 is slid forward, and the knife member 81 provided at the distal end of the separating means 6 also advances, and cuts off the portion between the tissue coagulation portions 162 shown in FIG.

【００４８】この切離動作の結果、切離された組織１６
１は図２８に示すように切離部分１６４の断端付近が凝
固されているため、組織中に血管１６５が含まれていて
も止血が完了しているため出血することはない。組織切
離後は図２９（ａ）に示すようにナイフスライダ１４２
を後退させ、先端のナイフ部材８１を挿入パイプ３内に
引き込み前述したようにラチェット９８を旋回し、開閉
操作用スライダ９１を後退させて把持部材４２ａ，４２
ｂを開き、組織を開放する。このとき、フック部材１５
１のフック部１５３が図２９（ｂ）に示すようにハンド
ル１１１上の長孔１５２に係合し、ハンドル１１１が開
閉操作ようにスライダ９１を前進させるのを防げるよう
になる。再び先端部３の開閉動作を行ないたい場合は図
２９（ａ）で示すようにストップ選択レバー１５６を矢
印ａの方向に旋回させ、図２１（ｂ）のように、突起１
５５ａを小孔１５４に係合させればよい。As a result of this separating operation, the separated tissue 16
In No. 1, as shown in FIG. 28, the vicinity of the cut end of the cut-off portion 164 is coagulated, so that even if the blood vessel 165 is contained in the tissue, the hemostasis is completed and thus no bleeding occurs. After the tissue dissection, as shown in FIG.
Is retracted, the leading knife member 81 is drawn into the insertion pipe 3, the ratchet 98 is turned as described above, and the opening / closing operation slider 91 is retracted to hold the gripping members 42a, 42.
Open b to release the tissue. At this time, the hook member 15
As shown in FIG. 29 (b), the first hook portion 153 is engaged with the elongated hole 152 on the handle 111, thereby preventing the handle 111 from advancing the slider 91 to open and close. When it is desired to perform the opening / closing operation of the tip portion 3 again, the stop selection lever 156 is pivoted in the direction of arrow a as shown in FIG. 29 (a), and the protrusion 1 is moved as shown in FIG. 21 (b).
55a may be engaged with the small hole 154.

【００４９】使用した鉗子１を洗浄する場合には図２で
示すように複数のユニットに分解し、それぞれを洗浄す
る。When the used forceps 1 is to be washed, it is disassembled into a plurality of units as shown in FIG. 2 and each is washed.

【００５０】（効果）本実施例に示した鉗子１は複数の
ユニット部分に分解可能な構成になっているため、鉗子
１を洗浄する場合には複数のユニットに分解し、それぞ
れを洗浄するため、複雑な鉗子内部まで容易に洗浄する
ことができる。また、凝固電極５２は把持面４３にのみ
露出されており、かつバイポーラであるので意図しない
組織部位に不要な電流を流す不都合を極力回避すること
ができる。また、凝固電極５２は把持部材４２ａ，４２
ｂに設けられたスリット５１の両側にその後端からスリ
ット５１の先端より前方まで配置されているため、切離
手段６がそのスリット５１の中をスライドして組織を切
離するとき、その切離部分の周囲は必ず凝固されてお
り、切離によって出血することはない。(Effect) Since the forceps 1 shown in this embodiment is configured to be disassembled into a plurality of unit parts, when the forceps 1 is washed, the forceps 1 is disassembled into a plurality of units, and each is washed. In addition, the inside of a complicated forceps can be easily washed. In addition, since the coagulation electrode 52 is exposed only on the grip surface 43 and is bipolar, it is possible to avoid the inconvenience of flowing unnecessary current to an unintended tissue site as much as possible. Further, the coagulation electrode 52 is connected to the gripping members 42a, 42.
Since the slit 51 is disposed on both sides of the slit 51 provided from the rear end to the front of the tip of the slit 51, when the separating means 6 slides through the slit 51 to separate the tissue, the cutting is performed. The area around it is always coagulated and does not bleed when cut.

【００５１】先端把持部５の把持部材４２ａ，４２ｂは
挿入パイプ３に対して独立して回転するため、トラカー
ルに設けられている気密手段と挿入パイプ３の間で生じ
る摩擦の影響を受けることはなく、どんなトラカールに
対しても常に同一の感覚で操作できる。Since the gripping members 42a and 42b of the tip gripping portion 5 rotate independently of the insertion pipe 3, it is not affected by the friction generated between the airtight means provided on the trocar and the insertion pipe 3. No matter what trocar, you can always operate it with the same feeling.

【００５２】切離手段６は常に挿入パイプ３もしくは把
持部材４２ａ，４２ｂ内に納まっているので、意図しな
い組織部位に触れ傷付けることはない。Since the separating means 6 is always contained in the insertion pipe 3 or the gripping members 42a and 42b, it does not touch and damage an unintended tissue part.

【００５３】把持部材４２ａ，４２ｂに直接回転操作部
を設けた場合、その操作部はハンドルより手元側に位置
してしまい、片手で操作するのは難しいが回転操作部を
開閉部材を介して把持部本体に接続した場合回転操作部
を鉗子を保持している手の人指し指で操作することがで
き、片手で開閉、回転が操作できる。When the rotating members are directly provided on the gripping members 42a and 42b, the operating members are located closer to the hand than the handle, and it is difficult to operate with one hand, but the rotating members are gripped via the opening / closing member. When connected to the body of the section, the rotation operation section can be operated by the index finger of the hand holding the forceps, and opening / closing and rotation can be operated by one hand.

【００５４】通常、先端把持部の開閉動作時には切離手
段６が作動するのを防げ、切離手段６の作動可能時には
新たに組織を把持することを防げるような、切離動作と
閉動作を選択する機構を設けたので、使用者は止血不十
分な組織を不意に切離してしまうことがない。Usually, a cutting operation and a closing operation are performed so that the cutting means 6 can be prevented from operating when the tip grip portion is opened and closed, and that a new tissue can be prevented from being held when the cutting means 6 is operable. Since the mechanism for selecting is provided, the user does not abruptly cut off the tissue with insufficient hemostasis.

【００５５】把持部本体は操作部に固定されており、開
閉動作時も操作部に対して動くことがないため組織を狙
い通りに容易に把持できる。The grasping portion main body is fixed to the operation portion, and does not move with respect to the operation portion even during the opening / closing operation, so that the tissue can be easily grasped as intended.

【００５６】先端把持部５を閉じても凝固電極５２同士
が接触し、導通することはないため、組織を把持しない
と電流は流れない。Even when the tip grip 5 is closed, the coagulation electrodes 52 come into contact with each other and do not conduct, so that no current flows unless the tissue is gripped.

【００５７】切離手段６は先端のナイフ部材８１と手元
側の固定部材が完全に絶縁されているため操作部が丈夫
な金属から成っていて切離中に間違って使用者が通電し
ても使用者が感電することはない。Since the knife member 81 at the tip end and the fixing member at the hand side of the separating means 6 are completely insulated, the operating portion is made of a strong metal, and even if the user mistakenly energizes the cutting means during the cutting operation. There is no electric shock to the user.

【００５８】開閉操作用スライダ９１の指あての形状を
不統一とし、その配置と、内部の長孔１０３の向きを常
にある決められた位置関係とすることで使用者は指あて
を目印として開閉操作体９を容易に操作部に取り付ける
ことができる。By making the shape of the finger opening / closing operation slider 91 ununiform, and keeping the arrangement and the direction of the internal elongated hole 103 always in a predetermined positional relationship, the user opens / closes with the finger pointing as a mark. The operating body 9 can be easily attached to the operating portion.

【００５９】（変形例）先端把持部の部材の材質をポリ
エーテルイミド（ＰＥＩ）、ポリフェニレンサルファイ
ド（ＰＰＳ）、ポリサルホン（ＰＳＵ）またはフッ素系
樹脂（例えばＰＴＦＥ）であってもよい。また、先端把
持部の部材の材質が絶縁性を有するセラミック材、アル
ミナ（Ａｌ₂ Ｏ₃ ）またはジルコニア（Ｚr Ｏ₂ ）であ
ってもよい。また、先端把持部の部材が凝固電極と弾性
部材の部組品に対するインサート成型で製作するように
してもよい。なお、前記実施形態では把持部本体の把持
部材にバイポーラ電極を組み込んだ切離機能付バイポー
ラ凝固鉗子の例を示したが、本発明はこれに限らず、そ
の把持部材に一極の電極を設け、切離機能付モノポーラ
凝固鉗子としてもよいものである。(Modification) The material of the member of the tip gripping portion may be polyetherimide (PEI), polyphenylene sulfide (PPS), polysulfone (PSU) or a fluororesin (for example, PTFE). Further, the material of the member of the tip grip portion may be an insulating ceramic material, alumina (Al ₂ O ₃ ) or zirconia (Zr O ₂ ). Further, the member of the tip grip may be manufactured by insert molding with respect to the assembly of the coagulated electrode and the elastic member. In the above-described embodiment, an example of the bipolar coagulation forceps with a cutting function in which the bipolar electrode is incorporated in the grip member of the grip body is shown, but the present invention is not limited to this, and the grip member is provided with a unipolar electrode. Alternatively, the monopolar coagulation forceps with a separating function may be used.

【００６０】［付記］ １．体腔内に挿入される挿入部を有した操作部本体と、
前記挿入部の先端付近に設けられ、閉じることにより各
把持面間に組織を把持する把持部と、前記把持部で把持
した組織を切離する切離手段とを備え、前記把持部は電
気絶縁性の部材によって作られた開閉操作される複数の
把持部材と、前記把持部材に設けられ、前記把持面にの
み電極面を露出させるように配置された凝固電極とを具
備したことを特徴とする切離機能付凝固鉗子。[Supplementary Notes] An operation unit main body having an insertion unit inserted into a body cavity,
The gripping part is provided near the tip of the insertion part and grips the tissue between the gripping surfaces by closing, and a cutting means for cutting the tissue gripped by the gripping part. The gripping part is electrically insulated. A plurality of gripping members that are opened and closed by a flexible member, and a coagulation electrode that is provided on the gripping member and that is arranged to expose the electrode surface only on the gripping surface. Coagulation forceps with detachment function.

【００６１】２．体腔内に挿入される挿入部を有した操
作部本体と、前記挿入部の先端付近に設けられ、閉じる
ことにより各把持面間に組織を把持する把持部と、前記
把持部で把持した組織を切離する切離手段とを備え、前
記把持部は電気絶縁性の部材によって作られた開閉操作
される複数の把持部材と、前記把持部材に設けられ、前
記把持面にのみ電極面を露出させるようにして対向する
ように設置した一対のバイポーラ凝固電極とを具備した
ことを特徴とする切離機能付バイポーラ凝固鉗子。2. The operation section main body having an insertion section to be inserted into the body cavity, the grip section provided near the distal end of the insertion section and gripping the tissue between the grip surfaces by closing, and the tissue gripped by the grip section. A gripping part which is provided with the gripping member, and the electrode surface is exposed only on the gripping surface. A bipolar coagulation forceps with a cutting function, comprising a pair of bipolar coagulation electrodes installed so as to face each other in this manner.

【００６２】３．前記把持部材にスリットを形成し、そ
のスリットを間にして２組のバイポーラ凝固電極を設
け、前記切離手段がこのスリットに沿って挿通され、ス
リットの両側のバイポーラ凝固電極でそれぞれ凝固した
凝固組織の間の組織部分を切離するようにしたことを特
徴とする付記第１，２項に記載の切離機能付バイポーラ
凝固鉗子。3. A slit is formed in the gripping member, two sets of bipolar coagulation electrodes are provided with the slit in between, and the separating means is inserted along the slit, and the coagulation tissue coagulated by the bipolar coagulation electrodes on both sides of the slit, respectively. The bipolar coagulation forceps with a cutting function according to any one of the appendices 1 and 2, wherein the tissue portion between the two is cut.

【００６３】４．前記切離手段はその移動が前記把持部
材を越えて外部へ突き出さないように設けられることを
特徴とする付記第３項に記載の切離機能付バイポーラ凝
固鉗子。これによれば、組織を切離する切離部材がその
把持部材の領域を越えて意図しない臓器部分に接触し、
損傷を起こす虞がない。4. 4. The bipolar coagulation forceps with a separating function according to claim 3, wherein the separating means is provided so that the movement thereof does not project beyond the gripping member to the outside. According to this, the cutting member that cuts the tissue contacts the unintended organ portion beyond the region of the gripping member,
There is no risk of damage.

【００６４】５．前記切離手段は閉じられた把持部材の
スリットの領域内で移動する刃部を有することを特徴と
する付記第３項に記載の切離機能付バイポーラ凝固鉗
子。5. The bipolar coagulation forceps with a cutting function according to claim 3, wherein the cutting means has a blade portion that moves within the slit region of the closed gripping member.

【００６５】６．前記一対の把持部材の一方に設けられ
る凝固電極と他方の把持部材に設けられる凝固電極とが
電気的に絶縁され、各凝固電極が個別的に独立して給電
手段に接続されることを特徴とする付記第２，３項に記
載のバイポーラ凝固鉗子。6. The coagulation electrode provided on one of the pair of gripping members and the coagulation electrode provided on the other gripping member are electrically insulated, and each coagulation electrode is individually and independently connected to the power feeding means. The bipolar coagulation forceps according to supplementary items 2 and 3.

【００６６】７．前記把持部材の一方に設けられる凝固
電極の電極面とこれに対向する他方の把持部材に設けら
れる凝固電極の電極端面とが、その把持部材が閉じたと
き、互いに接触しない状態で前記把持部材の把持面に露
出して配置されていることを特徴とする付記第２〜６項
に記載のバイポーラ凝固鉗子。7. When the gripping member is closed, the electrode surface of the coagulating electrode provided on one of the gripping members and the electrode end surface of the coagulating electrode provided on the other gripping member facing the gripping member are not in contact with each other. The bipolar coagulation forceps according to any one of appendices 2 to 6, wherein the bipolar coagulation forceps is arranged so as to be exposed on the grip surface.

【００６７】８．前記把持部材が閉じたときその一方の
把持部材の把持面とこれに対向する他方の把持部材の把
持面との間の距離が、前記把持部材の一方に設けられる
凝固電極の電極端面とこれに対向する他方の把持部材に
設けられる凝固電極の電極端面との間の距離より大きく
なるように規制する手段を設けたことを特徴とする付記
第７項に記載のバイポーラ凝固鉗子。8. When the gripping member is closed, the distance between the gripping surface of the one gripping member and the gripping surface of the other gripping member facing the gripping member is equal to the electrode end surface of the coagulation electrode provided on one of the gripping members and this. 8. The bipolar coagulation forceps according to appendix 7, further comprising means for restricting the distance from the electrode end surface of the coagulation electrode provided on the other opposing gripping member so as to be larger than the distance.

【００６８】[0068]

【発明の効果】以上説明したように本発明によれば、意
図しない組織部分に凝固電極が触れ、不要な電流を流し
てしまうことを回避でき、また、意図する組織部分に対
する凝固処置を容易かつ確実に行うことができる。As described above, according to the present invention, it is possible to prevent the coagulation electrode from touching an unintended tissue portion and causing an unnecessary electric current to flow, and it is possible to easily and coagulate the intended tissue portion easily. It can be done reliably.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施形態に係る外科用鉗子の全体の
外観を示し、（ａ）はその側面図、（ｂ）はその平面図
である。1A and 1B are external views of an entire surgical forceps according to an embodiment of the present invention, FIG. 1A is a side view thereof, and FIG. 1B is a plan view thereof.

【図２】前記外科用鉗子をユニットに分解した状態の構
成を示す説明図。FIG. 2 is an explanatory view showing a configuration in a state where the surgical forceps are disassembled into units.

【図３】（ａ）は開閉操作体の一部断面図、（ｂ）は切
離手段の一部断面図。3A is a partial sectional view of an opening / closing operation body, and FIG. 3B is a partial sectional view of a separating means.

【図４】（ａ）は把持部本体の平面図、（ｂ）は把持部
本体の側面図。FIG. 4A is a plan view of a grip body, and FIG. 4B is a side view of the grip body.

【図５】前記把持部本体の拡大した断面図。FIG. 5 is an enlarged cross-sectional view of the grip body.

【図６】前記把持部本体の把持部材の断面図。FIG. 6 is a cross-sectional view of a grip member of the grip body.

【図７】図６中Ａ−Ａ線に沿う前記把持部材の断面図。7 is a cross-sectional view of the grip member taken along the line AA in FIG.

【図８】図６中Ｂ−Ｂ線に沿う前記把持部材の断面図。8 is a cross-sectional view of the grip member taken along line BB in FIG.

【図９】図５中Ａ−Ａ線に沿う把持部本体の部分の断面
図。9 is a cross-sectional view of a portion of the grip portion main body taken along the line AA in FIG.

【図１０】図５中Ｂ−Ｂ線に沿う把持部本体の部分の断
面図。10 is a cross-sectional view of a portion of the grip portion main body taken along the line BB in FIG.

【図１１】図５中Ｃ−Ｃ線に沿う把持部本体の部分の断
面図。11 is a cross-sectional view of a portion of the grip portion main body taken along the line C-C in FIG.

【図１２】図５中Ｄ−Ｄ線に沿う把持部本体の部分の断
面図。12 is a cross-sectional view of a portion of the grip portion main body taken along the line D-D in FIG.

【図１３】図５中Ｅ−Ｅ線に沿う把持部本体の部分の断
面図。13 is a cross-sectional view of a portion of the grip portion main body taken along line EE in FIG.

【図１４】図５中Ｆ−Ｆ線に沿う把持部本体の部分の断
面図。14 is a cross-sectional view of a portion of the grip portion main body taken along line FF in FIG.

【図１５】図１中Ｇ−Ｇ線に沿う先端部分の断面図。FIG. 15 is a cross-sectional view of the tip portion taken along the line GG in FIG.

【図１６】開閉操作部の断面図。FIG. 16 is a cross-sectional view of an opening / closing operation unit.

【図１７】図１６中Ａ−Ａ線に沿う断面図。17 is a sectional view taken along the line AA in FIG.

【図１８】給電接続部の断面図。FIG. 18 is a cross-sectional view of a power supply connection part.

【図１９】切離手段の操作部の断面図。FIG. 19 is a cross-sectional view of the operating portion of the separating means.

【図２０】先端部を回転させる操作を示す説明図。FIG. 20 is an explanatory diagram showing an operation of rotating the tip portion.

【図２１】（ａ）は把持操作状態を示す鉗子の側面図、
（ｂ）はそのときのストップ選択レバーの状態の断面
図。FIG. 21 (a) is a side view of the forceps showing a grasping operation state,
(B) is sectional drawing of the state of the stop selection lever at that time.

【図２２】把持部材で組織を把持する直前の状態の説明
図。FIG. 22 is an explanatory diagram of a state immediately before grasping a tissue with a grasping member.

【図２３】把持部材で組織を把持した状態の説明図。FIG. 23 is an explanatory diagram showing a state where a tissue is grasped by a grasping member.

【図２４】図２３中Ａ−Ａ線に沿う断面図。24 is a sectional view taken along the line AA in FIG.

【図２５】（ａ）は切離操作状態を示す鉗子の側面図、
（ｂ）はそのときのストップ選択レバーの状態の断面
図。FIG. 25 (a) is a side view of the forceps showing a cutting operation state;
(B) is sectional drawing of the state of the stop selection lever at that time.

【図２６】切離操作状態の側面図。FIG. 26 is a side view of the separation operation state.

【図２７】図２６中Ａ−Ａ線に沿う断面図。27 is a cross-sectional view taken along the line AA in FIG.

【図２８】組織の凝固と切離の状態を示す斜視図。FIG. 28 is a perspective view showing the state of coagulation and dissection of tissue.

【図２９】ハンドル操作を規制する状態の鉗子の側面
図。FIG. 29 is a side view of the forceps in a state where the handle operation is restricted.

【符号の説明】[Explanation of symbols]

１…外科用鉗子、２…挿入部、３…挿入パイプ、４…手
元操作部、５…先端把持部、６…切離手段、８…把持部
本体、９…開閉操作体、１１…把持操作機構部、１２…
給電接続部、１３…切離操作部、１４…操作選択機構
部、１５…操作部本体、４０…ロッド部、４１…弾性部
材、４２ａ，４２ｂ…把持部材、４３…把持面、５１…
スリット、５２…凝固電極。DESCRIPTION OF SYMBOLS 1 ... Surgical forceps, 2 ... Insertion part, 3 ... Insertion pipe, 4 ... Hand operation part, 5 ... Tip holding part, 6 ... Separation means, 8 ... Gripping part main body, 9 ... Opening / closing operation body, 11 ... Gripping operation Mechanism part, 12 ...
Power supply connection part, 13 ... Separation operation part, 14 ... Operation selection mechanism part, 15 ... Operation part body, 40 ... Rod part, 41 ... Elastic member, 42a, 42b ... Gripping member, 43 ... Gripping surface, 51 ...
Slit, 52 ... Coagulation electrode.

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成７年１２月１４日[Submission date] December 14, 1995

【手続補正１】[Procedure amendment 1]

【補正対象書類名】図面[Document name to be amended] Drawing

【補正対象項目名】図１６[Correction target item name] FIG.

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【図１６】 FIG. 16

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】体腔内に挿入される挿入部を有した操作部
本体と、前記挿入部の先端付近に設けられ、閉じること
により各把持面間に組織を把持する把持部と、前記把持
部で把持した組織を切離する切離手段とを備え、前記把
持部は電気絶縁性の部材によって作られた開閉操作され
る複数の把持部材と、前記把持部材に設けられ、前記把
持面にのみ電極面を露出させるように配置された凝固電
極とを具備したことを特徴とする切離機能付凝固鉗子。1. An operating section main body having an insertion section to be inserted into a body cavity, a grip section provided near the distal end of the insertion section and gripping tissue between gripping surfaces by closing, and the grip section. And a plurality of gripping members that are opened and closed by an electrically insulating member, the gripping part being provided on the gripping member and only on the gripping surface. A coagulation forceps with a separating function, comprising: a coagulation electrode arranged to expose an electrode surface.