JP2003275220A - Medical machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide medical machinery capable of efficiently transmitting the heat generated in a heat source part to a treatment part, capable of obtaining a good coagulation capacity or a good incision capacity and excellent in durability. <P>SOLUTION: The medical machinery is constituted so that the heat source part 15 for heat-treating living body tissue, a heat insulating part 17 for holding the heat source part 15 and a treatment part 16 comprising a material having heat conductivity higher than that of the heat insulating part 17, provided at a position receiving heat from the heat source part 15 and capable of heat- treating the living body tissue are provided to a first grasping part 7. <P>COPYRIGHT: (C)2003,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】本発明は、一対のジョー間で
生体組織を把持した状態で生体組織を加熱し、生体組織
の凝固およびこの凝固部位を切開するなどの加熱処置を
行なう医療機器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical device for heating a living tissue while grasping the living tissue between a pair of jaws, and performing heat treatment such as coagulation of the living tissue and incision of the coagulation site.

【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（ジョー）を備え、把持部の一方または両方に発熱体
を設け、生体組織を把持した状態で発熱体を発熱させて
生体組織の凝固や、凝固した生体組織の凝固部位を切開
するなどの加熱処置を行なう医療機器が知られている。
この医療機器では通常、生体組織に含まれる血管の止血
や、生体組織の表層の病変部や出血部の焼灼、凝固そし
て避妊を目的とした卵管の閉塞等、多様な手術症例に用
いられている。2. Description of the Related Art Generally, a pair of gripping parts (jaws) for gripping a living tissue is provided, a heating element is provided on one or both of the gripping parts, and the heating element generates heat while gripping the living tissue. 2. Description of the Related Art Medical devices that perform heat treatment such as coagulation and incision of a coagulation site of coagulated living tissue are known.
This medical device is usually used for various surgical cases such as hemostasis of blood vessels contained in living tissue, cauterization of lesions and bleeding parts on the surface of living tissue, coagulation and oviduct obstruction for the purpose of contraception. There is.

【０００３】この種の医療機器として、例えば特開２０
０１−１９８１３７号公報や、特開２００１−３４０３
４９号公報には、一対の把持部の少なくとも一方にセラ
ミックヒーターなどの熱発生素子を設けた構成が開示さ
れている。An example of this type of medical device is Japanese Patent Laid-Open No. 20
01-198137 and JP 2001-3403.
Japanese Patent Publication No. 49 discloses a configuration in which a heat generating element such as a ceramic heater is provided on at least one of a pair of grips.

【０００４】これらの機器では、少なくとも一方の把持
部に生体組織と接触する発熱板（処置部）が設けられて
いる。この発熱板には熱源部である熱発生素子が固定さ
れている。そして、熱発生素子で発生した熱を発熱板に
伝熱させ、この発熱板によって生体組織の加熱処置を行
なうようになっている。In these devices, at least one of the grips is provided with a heat generating plate (treatment part) which comes into contact with the living tissue. A heat generating element which is a heat source is fixed to the heat generating plate. The heat generated by the heat generating element is transferred to the heat generating plate, and the heat generating plate heats the living tissue.

【０００５】さらに、生体組織と接触する部分の幅を狭
くした発熱板を熱発生素子に密着するように取付けるこ
とにより、熱発生素子で発生した熱を収束させて生体組
織の凝固や切開を効率良く行なう構成にしたものもあ
る。Furthermore, by mounting a heat generating plate having a narrow width in contact with the living tissue so as to be in close contact with the heat generating element, the heat generated by the heat generating element is converged and the coagulation or incision of the living tissue is efficiently performed. Some are well configured.

【０００６】[0006]

【発明が解決しようとする課題】上記従来構成の医療機
器では把持部に熱発生素子が直接接触しているので、熱
発生素子で発生させた熱が把持部にも伝熱してしまう問
題がある。ここで、医療機器の把持部は発熱板よりも熱
伝導率が低く、伝熱し難い材料で形成されているので、
熱発生素子で発生させた熱は発熱板側に大部分が伝達さ
れるようになっている。In the medical device having the above-mentioned conventional structure, since the heat generating element is in direct contact with the grip portion, there is a problem that the heat generated by the heat generating element is also transferred to the grip portion. . Here, since the grip portion of the medical device has a lower thermal conductivity than the heat generating plate and is formed of a material that does not easily transfer heat,
Most of the heat generated by the heat generating element is transferred to the heating plate side.

【０００７】しかしながら、一対の把持部の間に生体組
織を挟んだ状態で、熱発生素子で熱を発生させた場合、
一対の把持部間で生体組織を挟む力が熱発生素子と発熱
板とを密着させる方向に作用すると同時に、把持部と熱
発生素子とを密着させる方向にも作用する。そのため、
熱発生素子の熱は、発熱板側に大部分が伝達されると同
時に、その一部が把持部側にも伝熱されて逃げてしまう
問題がある。その結果、生体組織に接触する発熱板の温
度が迅速に上昇しなかったり、温度ムラが生じ、医療機
器による凝固能や、切開能が劣化してしまうおそれがあ
る。However, when heat is generated by the heat generating element with the living tissue sandwiched between the pair of grips,
The force sandwiching the living tissue between the pair of grips acts in the direction of bringing the heat generating element and the heat generating plate into close contact with each other, and at the same time, acts in the direction of bringing the gripping portion and the heat generating element into close contact with each other. for that reason,
Most of the heat of the heat generating element is transferred to the heat generating plate side, and at the same time, a part of the heat is transferred to the grip portion side and escapes. As a result, there is a possibility that the temperature of the heat generating plate that comes into contact with the living tissue does not rise quickly or temperature unevenness occurs, and the coagulation ability and incision ability of the medical device may deteriorate.

【０００８】また、熱発生素子は裸状態で手術操作に使
えるほど材料の強度や耐性がないので、熱発生素子に外
部から力が直接に加わらないように保護する必要があ
る。さらに、熱発生素子や発熱板は発熱時と非発熱時
（常温時）との温度差が大きいため、温度変化にともな
う寸法変化（伸び縮み）が大きい。そのため、熱発生素
子や発熱板は発熱を繰り返すと把持部への取付け部分に
緩みが発生したり、熱発生素子や発熱板自体も把持部か
ら応力を受けて破損するおそれがあるなど耐久性の面で
問題がある。Further, since the heat generating element is not so strong and resistant that the material can be used for surgical operation in a bare state, it is necessary to protect the heat generating element from external force. Further, since the heat generating element and the heat generating plate have a large temperature difference between when heat is generated and when heat is not generated (at room temperature), dimensional change (expansion and contraction) is large with temperature change. Therefore, if the heat generating element or the heat generating plate repeats heat generation, looseness may occur in the attachment part to the grip, and the heat generating element or the heat generating plate itself may be damaged due to stress from the grip. There is a problem in terms.

【０００９】本発明は上記事情に着目してなされたもの
で、その目的は、熱源部で発生した熱を処置部側に効率
良く伝達させることができ、良好な凝固能や切開能が得
られ、かつ耐久性に優れた医療機器を提供することにあ
る。The present invention has been made in view of the above circumstances, and an object thereof is to efficiently transfer the heat generated in the heat source section to the treatment section side, thereby obtaining good coagulation ability and incision ability. And to provide a medical device having excellent durability.

【００１０】[0010]

【課題を解決するための手段】請求項１の発明は、一対
のジョーを相対的に開閉する操作部を備える医療機器に
おいて、前記生体組織に加熱処置を施すための熱を発生
する熱源部と、前記一対のジョーの少なくとも一方に設
けられ、前記熱源部を保持する保持手段と、前記保持手
段より熱伝導率の高い材料からなり、前記熱源部から伝
熱される位置に設けられ、前記生体組織に加熱処置を行
うことが可能な処置部と、を備えることを特徴とする医
療機器である。According to a first aspect of the present invention, there is provided a medical device including an operating portion that relatively opens and closes a pair of jaws, and a heat source portion that generates heat for heating the living tissue. A holding means provided on at least one of the pair of jaws for holding the heat source portion, and made of a material having a higher thermal conductivity than the holding means, provided at a position where heat is transferred from the heat source portion, and the biological tissue A medical device comprising: a treatment section capable of performing heat treatment.

【００１１】そして、本請求項１の発明では、熱源部で
発生した熱が、保持手段より熱伝導率の高い処置部に集
中的に効率よく伝達し、ジョー側に伝達され難いように
したものである。According to the first aspect of the present invention, the heat generated in the heat source section is efficiently and intensively transferred to the treatment section having a higher thermal conductivity than the holding means so that it is difficult to transfer the heat to the jaw side. Is.

【００１２】請求項２の発明は、前記ジョーは、前記生
体組織を把持した際に前記処置部の両側面に前記生体組
織が接触することを防止する接触防止部を有することを
特徴とする請求項１に記載の医療機器である。According to a second aspect of the present invention, the jaw has a contact preventing portion that prevents the living tissue from coming into contact with both side surfaces of the treatment portion when the living tissue is grasped. Item 1. The medical device according to Item 1.

【００１３】そして、本請求項２の発明では、一対のジ
ョー間で生体組織を把持した際にジョーの接触防止部に
よって処置部の両側面に生体組織が接触することを防止
するようにしたものである。According to the second aspect of the present invention, when the living tissue is grasped between the pair of jaws, the contact preventing portions of the jaws prevent the living tissue from contacting both side surfaces of the treatment portion. Is.

【００１４】請求項３の発明は、前記ジョーは、前記処
置部の先方に延出された延出部を有し、前記延出部に先
細り部を形成したことを特徴とする請求項１に記載の医
療機器である。The invention according to claim 3 is characterized in that the jaw has an extending portion extending toward the tip of the treatment portion, and a tapered portion is formed in the extending portion. The medical device described.

【００１５】そして、本請求項３の発明では、ジョーの
延出部の先細り部によって生体組織の剥離操作などを行
なうことができるようにしたものである。According to the third aspect of the present invention, the tapered portion of the extending portion of the jaw can be used to perform the peeling operation of the living tissue.

【００１６】請求項４の発明は、前記ジョーは、前記一
対のジョーを閉じた際に、前記延出部間に隙間が生じる
ことを特徴とする請求項２に記載の医療機器である。The invention according to claim 4 is the medical device according to claim 2, wherein the jaw has a gap between the extending portions when the pair of jaws are closed.

【００１７】そして、本請求項４の発明では、一対のジ
ョーを閉じた際に、ジョーの延出部間の隙間によって処
置部を生体組織に密着させる際の一対のジョー間の移動
量を十分に確保して処置部を生体組織に密着させやすく
したものである。Further, in the invention of claim 4, when the pair of jaws is closed, the movement amount between the pair of jaws is sufficient when the treatment portion is brought into close contact with the living tissue by the gap between the extension portions of the jaws. Is secured to facilitate treatment of the treatment part in close contact with the living tissue.

【００１８】請求項５の発明は、前記ジョーは、前記保
持手段からの伝熱を低減するように前記保持手段との間
で非接触を保つ非接触部を有することを特徴とする請求
項１に記載の医療機器である。According to a fifth aspect of the present invention, the jaw has a non-contact portion that maintains non-contact with the holding means so as to reduce heat transfer from the holding means. The medical device according to 1.

【００１９】そして、本請求項５の発明では、非接触部
を有することにより、断熱部とジョーとの接触面積を更
に低減し、断熱部とジョーとの間の断熱効果を更に高め
るようにしたものである。According to the invention of claim 5, the non-contact portion is provided so that the contact area between the heat insulating portion and the jaw is further reduced, and the heat insulating effect between the heat insulating portion and the jaw is further enhanced. It is a thing.

【００２０】請求項６の発明は、一対のジョーを相対的
に開閉する操作部を備える医療機器において、生体組織
に加熱処置を施すための熱を発生すると共に、前記生体
組織に加熱処置を行うことが可能な処置部と、前記処置
部より熱伝導率の低い材料からなり、前記一対のジョー
の一方に設けられると共に、前記処置部を保持する保持
手段と、を備えることを特徴とする医療機器である。According to a sixth aspect of the present invention, in a medical device including an operating portion that relatively opens and closes a pair of jaws, heat is generated for applying heat treatment to living tissue, and heat treatment is performed on the living tissue. A medical treatment unit that is capable of performing heat treatment, and a holding unit that is made of a material having a lower thermal conductivity than the treatment unit and that is provided on one of the pair of jaws and that holds the treatment unit. Equipment.

【００２１】そして、本請求項６の発明では、処置部で
発生した熱が、保持手段より熱伝導率の高い処置部に集
中的に効率よく伝達し、ジョー側に伝達され難いように
したものである。Further, in the invention of claim 6, the heat generated in the treatment portion is efficiently and intensively transferred to the treatment portion having a higher thermal conductivity than the holding means so that it is difficult to be transmitted to the jaw side. Is.

【００２２】請求項７の発明は、前記処置部は、前記保
持手段より熱伝導率が高い材料からなり生体組織に接触
して加熱処置を行う生体組織接触部と、前記生体組織接
触部に対して伝熱可能に設けられて前記生体組織接触部
を加熱するための熱を発生する熱源部とを含むことを特
徴とする請求項６記載の医療機器である。According to a seventh aspect of the present invention, the treatment portion is made of a material having a higher thermal conductivity than that of the holding means, and the living tissue contact portion comes into contact with the living tissue to perform heat treatment. 7. The medical device according to claim 6, further comprising a heat source part that is provided so as to be able to transfer heat and that generates heat for heating the biological tissue contact part.

【００２３】そして、本請求項７の発明では、処置部が
生体組織接触部と熱源部とを有し、熱源部が発する熱が
生体組織接触部へ伝熱されるようにしたものである。Further, in the invention of claim 7, the treatment portion has a living tissue contact portion and a heat source portion, and heat generated by the heat source portion is transferred to the living tissue contact portion.

【００２４】[0024]

【発明の実施の形態】以下、本発明の第１の実施の形態
を図１乃至図４を参照して説明する。図１は本実施の形
態の医療機器１のシステム全体の概略構成を示すもので
ある。この医療機器１のシステムには処置具２と電源装
置３とが設けられている。BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a schematic configuration of the entire system of a medical device 1 according to this embodiment. The system of the medical device 1 is provided with a treatment tool 2 and a power supply device 3.

【００２５】処置具２には略直線状の２本の操作アーム
４，５（第１操作アーム４および第２操作アーム５）が
設けられている。これらの操作アーム４，５は略中央部
位が共通の回転軸６を介して連結され、この回転軸６を
中心に自由に回転できるようになっている。The treatment instrument 2 is provided with two substantially linear operation arms 4 and 5 (first operation arm 4 and second operation arm 5). The operation arms 4 and 5 are connected to each other at a substantially central portion thereof via a common rotary shaft 6, and can freely rotate around the rotary shaft 6.

【００２６】さらに、処置具２には回転軸６よりも先端
部側に開閉可能な一対の把持部（ジョー）７，８（第１
把持部７および第２把持部８）が設けられている。ここ
で、第１操作アーム４の先端部側には第１把持部７、第
２操作アーム５の先端部側には第２把持部８がそれぞれ
形成されている。Further, the treatment instrument 2 has a pair of gripping parts (jaws) 7 and 8 (first part) which can be opened and closed on the distal end side of the rotary shaft 6.
A grip 7 and a second grip 8) are provided. Here, a first grip portion 7 is formed on the tip end side of the first operation arm 4, and a second grip portion 8 is formed on the tip end side of the second operation arm 5.

【００２７】また、第１操作アーム４および第２操作ア
ーム５の後端には、夫々、術者が指を入れて操作するた
めのリング（操作部）９が設けられている。そして、第
１操作アーム４および第２操作アーム５の各リング９に
手指を差し込んだ状態で、第１操作アーム４および第２
操作アーム５を回転軸６を中心に回動操作することによ
り、第１把持部７と第２把持部８との間を開閉操作する
ようになっている。Further, at the rear ends of the first operating arm 4 and the second operating arm 5, there are provided rings (operating parts) 9 for the operator to put in and operate. Then, with the fingers inserted into the respective rings 9 of the first operating arm 4 and the second operating arm 5, the first operating arm 4 and the second operating arm 4
By rotating the operation arm 5 around the rotation shaft 6, the opening and closing operation is performed between the first grip portion 7 and the second grip portion 8.

【００２８】さらに、第１操作アーム４の後端には、リ
ング９の近傍に接続口金１０が取付けられている。この
接続口金１０には電源装置３から伸びるケーブル１１の
先端部のコネクタ１２が着脱可能に接続されている。な
お、電源装置３には、この電源装置３のＯＮ−ＯＦＦ
や、出力設定の調整を行なうためのフットスイッチ１３
などが接続されている。Further, a connection mouthpiece 10 is attached to the rear end of the first operation arm 4 near the ring 9. A connector 12 at the tip of a cable 11 extending from the power supply device 3 is detachably connected to the connection mouthpiece 10. In addition, the power supply device 3 has an ON-OFF state.
And a foot switch 13 for adjusting output settings
Etc. are connected.

【００２９】また、第１把持部７には生体組織の加熱処
置を行なう図２（Ａ），（Ｂ）に示す加熱処置ユニット
１４が装着されている。この加熱処置ユニット１４には
生体組織の加熱処置用の熱源部１５と、この熱源部１５
から伝熱されて生体組織の加熱処置を行なう処置部１６
と、この熱源部１５と処置部１６の周囲に配設され、処
置部１６と熱源部１５との接触部以外の方向への熱源部
１５からの熱伝達を遮断する断熱部１７とが組み付けら
れている。A heat treatment unit 14 shown in FIGS. 2 (A) and 2 (B) for performing heat treatment on the living tissue is attached to the first grip portion 7. The heat treatment unit 14 includes a heat source unit 15 for heat treatment of living tissue, and the heat source unit 15
Treatment unit 16 for heat treatment of living tissue by heat transfer from the body
And a heat insulating section 17 which is disposed around the heat source section 15 and the treatment section 16 and blocks heat transfer from the heat source section 15 in a direction other than the contact section between the treatment section 16 and the heat source section 15. ing.

【００３０】なお、断熱部１７（本実施形態における断
熱枠体１８）は、処置部１６を保持する保持手段として
の機能を有する。また、断熱部１７（保持手段）は、熱
源部１５を囲むように前記一対のジョーの一方に配設さ
れ、処置部１６より熱伝導率の低い材料からなり、処置
部１６に形成される生体組織と接触する生体組織接触部
としての刃部２１（後述する）が露出するように処置部
を保持する。更に、処置部１６は、前記保持手段より熱
伝導率の高い材料からなり、熱源部１５から伝熱される
位置に設けられ、前記生体組織に加熱処置を行うことが
可能である。なお、処置部１６は熱源部１５に対して伝
熱可能に固定されていることが好ましい。これは熱源部
１５から処置部１６への熱伝達を促進することに貢献す
る。The heat insulating section 17 (the heat insulating frame 18 in this embodiment) has a function as a holding means for holding the treatment section 16. The heat insulating portion 17 (holding means) is disposed in one of the pair of jaws so as to surround the heat source portion 15, is made of a material having a lower thermal conductivity than the treatment portion 16, and is formed in the treatment portion 16. The treatment portion is held so that a blade portion 21 (described later) as a living tissue contact portion that comes into contact with the tissue is exposed. Further, the treatment portion 16 is made of a material having a higher thermal conductivity than the holding means, is provided at a position where heat is transferred from the heat source portion 15, and can heat the living tissue. The treatment section 16 is preferably fixed to the heat source section 15 so that heat can be transferred. This contributes to promoting heat transfer from the heat source section 15 to the treatment section 16.

【００３１】断熱部１７には、図３（Ａ）〜（Ｃ）に示
すように略Ｕ字状の断面形状の剛性のある断熱枠体１８
が設けられている。この断熱枠体１８は、例えばフッ素
樹脂や、シリコーンゴム、セラミックスなど熱を伝えに
くい材料からなっている。この他、ガラス、木材、陶磁
器、石綿、ゴム、テフロン（登録商標）など、処置部１
６及び把持部（ジョー）７，８と比べて熱伝導率が低
い、熱を伝えにくい材料であれば、何でも断熱枠体１８
に使える。そして、この断熱枠体１８によって処置部１
６を保持する保持枠１９が形成されている。As shown in FIGS. 3A to 3C, the heat insulating portion 17 has a rigid heat insulating frame 18 having a substantially U-shaped cross section.
Is provided. The heat insulating frame 18 is made of a material such as fluororesin, silicone rubber, or ceramics that does not easily transmit heat. In addition, the treatment section 1 such as glass, wood, ceramics, asbestos, rubber, Teflon (registered trademark), etc.
6 and the gripping portions (jaws) 7 and 8, the heat insulating frame body 18 is made of any material that has a lower thermal conductivity and is less likely to conduct heat.
Can be used for Then, with this heat insulating frame 18, the treatment section 1
A holding frame 19 for holding 6 is formed.

【００３２】また、処置部１６には、例えば銅、銅合
金、アルミニウム合金、タングステンあるいはモリブデ
ン等、断熱枠体１８と比べて熱伝導率が高い、熱を伝え
易い材料からなる伝熱板２０が設けられている。この伝
熱板２０の下端部には、先細状の刃部２１が形成されて
いる。さらに、この伝熱板２０の刃部２１の少なくとも
刃先部には、生体組織や血液が付着するのを防ぐために
フッ素樹脂などの薄い皮膜２１ａが施されている。Further, the treatment portion 16 is provided with a heat transfer plate 20 made of a material such as copper, a copper alloy, an aluminum alloy, tungsten or molybdenum, which has a higher heat conductivity than the heat insulating frame 18 and easily transmits heat. It is provided. A tapered blade portion 21 is formed at the lower end of the heat transfer plate 20. Further, a thin film 21a of fluororesin or the like is applied to at least the cutting edge portion of the blade portion 21 of the heat transfer plate 20 in order to prevent biological tissue and blood from adhering thereto.

【００３３】また、伝熱板２０の上端部には、図２
（Ａ）に示すように保持枠１９内に収容される部分に熱
源部１５の取付け部２２が形成されている。ここで、熱
源部１５には、例えばニクロム線、シリコーン半導体
や、モリブデン薄膜抵抗などの熱発生素子である複数、
本実施の形態では３つの発熱手段２３が設けられてい
る。そして、伝熱板２０の上端部には、３つの発熱手段
２３をそれぞれ収容する凹陥状の３つの熱源部取付け部
２２が並設されている。Further, at the upper end of the heat transfer plate 20, as shown in FIG.
As shown in (A), a mounting portion 22 of the heat source portion 15 is formed in a portion accommodated in the holding frame 19. Here, the heat source unit 15 includes, for example, a plurality of heat generating elements such as a nichrome wire, a silicone semiconductor, and a molybdenum thin film resistor.
In this embodiment, three heat generating means 23 are provided. Then, on the upper end portion of the heat transfer plate 20, three concave heat source portion mounting portions 22 that accommodate the three heat generating means 23 are arranged in parallel.

【００３４】さらに、伝熱板２０の上端部には、図２
（Ｂ）に示すように３つの熱源部取付け部２２の各前方
の仕切り壁に各発熱手段２３の先端部を差し込み状態で
固定する固定溝２４が形成されている。そして、各発熱
手段２３の先端部はこの伝熱板２０の固定溝２４に差し
込まれた状態で例えば半田付けなどの手段で固定されて
いる。Further, at the upper end portion of the heat transfer plate 20, as shown in FIG.
As shown in (B), a fixing groove 24 is formed in each of the front partition walls of the three heat source attaching portions 22 to fix the tip end portion of each heat generating means 23 in the inserted state. The tip of each heat generating means 23 is fixed by means such as soldering while being inserted into the fixing groove 24 of the heat transfer plate 20.

【００３５】また、各発熱手段２３の後端部にはリード
線２５の一端部が例えば半田付けなどの手段で固定され
ている。さらに、各発熱手段２３のリード線２５はそれ
ぞれ後方に向けて延出されている。ここで、各発熱手段
２３のリード線２５は伝熱板２０の後端部で１つに束ね
られて、更に手元側に伸び、前述の接続口金１０に連結
されている。Also, one end of the lead wire 25 is fixed to the rear end of each heat generating means 23 by means such as soldering. Furthermore, the lead wires 25 of each heat generating means 23 extend rearward. Here, the lead wires 25 of each heat generating means 23 are bundled into one at the rear end portion of the heat transfer plate 20, extend further toward the hand side, and are connected to the above-mentioned connection mouthpiece 10.

【００３６】なお、処置部１６を保持する保持枠１９
は、伝熱板２０に横方向から強い力が加わっても、曲り
や変形などが生じないように、比較的、剛性の高い材料
で、かつ、できるだけ高い剛性が得られるように比較的
肉厚の剛性体によって形成されている。A holding frame 19 for holding the treatment portion 16
Is a material having relatively high rigidity so that bending or deformation does not occur even if a strong force is applied to the heat transfer plate 20 from the lateral direction, and it is relatively thick so as to obtain as high rigidity as possible. It is formed by a rigid body.

【００３７】また、保持枠１９の枠内には、図２（Ａ）
に示すように、伝熱板２０の刃部２１より上側の部分
と、発熱手段２３と、リード線２５とを収容する溝状の
収容空間１９ａが形成されている。そして、伝熱板２０
の刃部２１より上側の部分と、発熱手段２３と、リード
線２５とはこの保持枠１９の枠内の収容空間１９ａに収
容され、保持枠１９の断熱枠体１８で覆われるように取
り囲まれている。Further, in the frame of the holding frame 19, FIG.
As shown in FIG. 5, a groove-shaped accommodation space 19 a for accommodating the portion above the blade portion 21 of the heat transfer plate 20, the heat generating means 23, and the lead wire 25 is formed. And the heat transfer plate 20
The portion above the blade portion 21, the heat generating means 23, and the lead wire 25 are housed in the housing space 19a in the frame of the holding frame 19, and are surrounded by the heat insulating frame body 18 of the holding frame 19. ing.

【００３８】さらに、伝熱板２０の上部を覆う断熱枠体
１８の先端部位置は、図２（Ａ）に示すように、伝熱板
２０の先端部位置と同じか、或いは伝熱板２０の先端部
位置よりも前方に突出する位置まで延設されている。同
様に、断熱枠体１８の後端部位置は、伝熱板２０の後端
位置より更に後方まで伸びて、伝熱板２０の後端を覆っ
ている。Further, as shown in FIG. 2A, the position of the tip of the heat insulating frame 18 covering the upper part of the heat transfer plate 20 is the same as the position of the tip of the heat transfer plate 20, or the heat transfer plate 20. Is extended to a position projecting forward from the position of the tip of the. Similarly, the rear end position of the heat insulating frame 18 extends further rearward than the rear end position of the heat transfer plate 20 to cover the rear end of the heat transfer plate 20.

【００３９】また、断熱枠体１８の枠内の収容空間１９
ａは、伝熱板２０や、発熱手段２３、リード線２５との
間に隙間２６があくような大き目の寸法になっている。
そして、この隙間２６には、曲りにくい硬い板状のスペ
ーサー部材２７や、絶縁性と耐熱性を兼ね備えた充填材
２８が充填されている。これにより、断熱部１７は、断
熱枠体１８と熱源部１５の発熱手段２３との隙間２６に
断熱性の充填剤２８が充填されている。Further, the accommodating space 19 in the frame of the heat insulating frame 18
The size a is such that there is a gap 26 between the heat transfer plate 20, the heat generating means 23, and the lead wire 25.
The gap 26 is filled with a hard plate-shaped spacer member 27 that is hard to bend and a filler 28 that has both insulation and heat resistance. As a result, in the heat insulating portion 17, the gap 26 between the heat insulating frame 18 and the heat generating means 23 of the heat source portion 15 is filled with the heat insulating filler 28.

【００４０】さらに、保持枠１９には、前後の両端部に
伝熱板２０の支持ピン２９ａ，２９ｂがそれぞれ取付け
られている。ここで、伝熱板２０の前端部には保持枠１
９のの前側の支持ピン２９ａが挿入される第１の挿入穴
３０が形成されている。さらに、伝熱板２０の後端部に
は保持枠１９の後ろ側の支持ピン２９ｂが挿入される第
２の挿入穴３１が形成されている。そして、伝熱板２０
と断熱枠体１８とは、前後の支持ピン２９ａ，２９ｂに
よって連結された状態で支持されている。Support pins 29a and 29b of the heat transfer plate 20 are attached to the front and rear ends of the holding frame 19, respectively. Here, the holding frame 1 is attached to the front end of the heat transfer plate 20.
A first insertion hole 30 into which the support pin 29a on the front side of 9 is inserted is formed. Further, a second insertion hole 31 into which the support pin 29b on the rear side of the holding frame 19 is inserted is formed at the rear end of the heat transfer plate 20. And the heat transfer plate 20
The heat insulating frame 18 and the heat insulating frame 18 are supported in a state of being connected by front and rear support pins 29a and 29b.

【００４１】また、伝熱板２０の第２の挿入穴３１は、
図４に示すように、この伝熱板２０の前後方向に長い長
穴によって形成されている。この第２の挿入穴３１には
支持ピン２９ｂが前後方向に移動可能に緩く嵌まってい
る。そして、この第２の挿入穴３１によって伝熱板２０
と保持枠１９との熱膨張の差を吸収する長穴状の熱膨張
吸収部が形成されている。The second insertion hole 31 of the heat transfer plate 20 is
As shown in FIG. 4, the heat transfer plate 20 is formed of a long hole in the front-rear direction. A support pin 29b is loosely fitted in the second insertion hole 31 so as to be movable in the front-rear direction. Then, the heat transfer plate 20 is formed by the second insertion hole 31.
A long-hole-shaped thermal expansion absorbing portion that absorbs the difference in thermal expansion between the holding frame 19 and the holding frame 19 is formed.

【００４２】また、第１把持部７には加熱処置ユニット
１４が装着される凹陥状の装着溝３２が形成されてい
る。この装着溝３２の前端部には図２（Ａ）に示すよう
に加熱処置ユニット１４の前端の肩部１４ａを係止する
段差状の受部３３が形成されている。そして、加熱処置
ユニット１４の前端の肩部１４ａをこの受部３３内に挿
入させることにより、加熱処置ユニット１４の前端の肩
部１４ａを第１把持部７の前端部に係脱可能に係止する
ようになっている。A recessed mounting groove 32 into which the heat treatment unit 14 is mounted is formed in the first grip portion 7. As shown in FIG. 2A, a stepped receiving portion 33 for locking the shoulder portion 14a at the front end of the heat treatment unit 14 is formed at the front end portion of the mounting groove 32. By inserting the shoulder portion 14a at the front end of the heat treatment unit 14 into the receiving portion 33, the shoulder portion 14a at the front end of the heat treatment unit 14 is detachably locked to the front end portion of the first grip portion 7. It is supposed to do.

【００４３】さらに、第１把持部７には装着溝３２の後
端部に図３（Ｃ）に示すように２つの係合ピン３４ａ，
３４ｂが嵌着されている。そして、これらの係合ピン３
４ａ，３４ｂは加熱処置ユニット１４の後端部のピン挿
入穴３５ａ，３５ｂ内に圧入されている。これにより、
加熱処置ユニット１４は第１把持部７の装着溝３２に挿
入された状態で、加熱処置ユニット１４の前端の肩部１
４ａが受部３３の段差状の受部３３に挿入させて係止さ
せた状態で、加熱処置ユニット１４の後端部のピン挿入
穴３５ａ，３５ｂ内に圧入される２つの係合ピン３４
ａ，３４ｂによって固定されている。Further, the first grip portion 7 has two engaging pins 34a, at the rear end portion of the mounting groove 32, as shown in FIG. 3 (C).
34b is fitted. Then, these engagement pins 3
4a and 34b are press-fitted into the pin insertion holes 35a and 35b at the rear end of the heat treatment unit 14. This allows
With the heat treatment unit 14 inserted in the mounting groove 32 of the first grip portion 7, the shoulder portion 1 at the front end of the heat treatment unit 14 is inserted.
Two engagement pins 34 are press-fitted into the pin insertion holes 35a and 35b at the rear end of the heat treatment unit 14 in a state in which 4a is inserted and locked in the stepped reception part 33 of the reception part 33.
It is fixed by a and 34b.

【００４４】また、図３（Ａ）〜（Ｃ）に示すように第
２把持部８には、第１把持部７との対向面に例えばフッ
素樹脂やシリコーンなどの柔軟で、熱を伝えにくい材料
からなる平板状の受け部３６が設けられている。これに
より、第１把持部７と第２把持部８とを閉じたとき、伝
熱板２０の刃部２１全体がこの受け部３６に接触する状
態で受けるようになっている。そして、第１把持部７と
第２把持部８とを閉じた状態で、第１把持部７と第２把
持部８との間に生体組織を挟み込んで凝固や切開を行な
うようになっている。Further, as shown in FIGS. 3 (A) to 3 (C), the second grip portion 8 is made of a flexible material such as fluororesin or silicone on the surface facing the first grip portion 7, and is difficult to transfer heat. A flat plate-shaped receiving portion 36 made of a material is provided. As a result, when the first grip portion 7 and the second grip portion 8 are closed, the entire blade portion 21 of the heat transfer plate 20 is received while being in contact with the receiving portion 36. Then, in a state where the first grip 7 and the second grip 8 are closed, a living tissue is sandwiched between the first grip 7 and the second grip 8 to perform coagulation or incision. .

【００４５】次に、上記構成の作用について説明する。
本実施の形態の処置具２の使用時にはこの処置具２の第
１操作アーム４および第２操作アーム５の手元側の各リ
ング９に手指を差し込んだ状態で、第１操作アーム４お
よび第２操作アーム５を回転軸６を中心に回動操作する
ことにより、第１把持部７と第２把持部８との間が開閉
操作される。そして、第１把持部７と第２把持部８との
間を閉じて第１把持部７と第２把持部８との間に生体組
織を挟み込んだ状態で、加熱処置ユニット１４の熱源部
１５が通電加熱される。Next, the operation of the above configuration will be described.
When the treatment tool 2 of the present embodiment is used, the first operation arm 4 and the second operation arm 4 of the first operation arm 4 and the second operation arm 5 with the fingers inserted into the respective rings 9 on the hand side. By rotating the operation arm 5 about the rotation shaft 6, the opening and closing operation is performed between the first grip portion 7 and the second grip portion 8. Then, the heat source unit 15 of the heat treatment unit 14 in a state in which the first grip 7 and the second grip 8 are closed and the living tissue is sandwiched between the first grip 7 and the second grip 8. Is heated by electricity.

【００４６】このとき、熱源部１５の３つの発熱手段２
３からの熱は伝熱板２０に伝熱され、伝熱板２０の先細
状の刃部２１が高温度に加熱される。そのため、第１把
持部７と第２把持部８との間で伝熱板２０の刃部２１に
圧接されている生体組織はこの刃部２１の熱によって加
熱され、生体組織の凝固や切開が効率良く行なわれる。At this time, the three heat generating means 2 of the heat source section 15
The heat from 3 is transferred to the heat transfer plate 20, and the tapered blade portion 21 of the heat transfer plate 20 is heated to a high temperature. Therefore, the living tissue pressed against the blade portion 21 of the heat transfer plate 20 between the first grip portion 7 and the second grip portion 8 is heated by the heat of the blade portion 21, and the living tissue is coagulated or incised. It is done efficiently.

【００４７】そこで、上記構成のものにあっては次の効
果を奏する。すなわち、本実施の形態の処置具２の加熱
処置ユニット１４では略Ｕ字型の断熱枠体１８により伝
熱板２０の刃部２１より上側の部分と発熱手段２３を覆
っている。そのため、熱源部１５（発熱手段２３）で発
生した熱が、断熱枠体（保持手段）１８より熱伝導率の
高い伝熱板２０（処置部）に集中的に効率よく伝達し、
ジョー側に伝達され難いようにできる。医療機器１の使
用時に発熱手段２３の熱が発熱手段２３と伝熱板２０と
の接触部以外の方向、例えば伝熱板２０の左右方向や上
方へ逃げることを防ぐことができるので、熱源部１５で
ある熱発生素子などの発熱手段２３の熱を処置部１６の
伝熱板２０側に集中的に効率よく伝達することができ
る。その結果、熱源部１５の熱が第１把持部７側に伝熱
されることを防ぐことができるので、生体組織に接触す
る伝熱板２０の温度が迅速に上昇しなかったり、温度ム
ラが生じ、医療機器１による凝固能や、切開能の劣化が
生じることを防止することができる。Therefore, the following effects can be obtained with the above configuration. That is, in the heat treatment unit 14 of the treatment tool 2 of the present embodiment, the substantially U-shaped heat insulating frame 18 covers the portion above the blade portion 21 of the heat transfer plate 20 and the heat generating means 23. Therefore, the heat generated in the heat source portion 15 (heat generating means 23) is intensively and efficiently transmitted to the heat transfer plate 20 (treatment portion) having a higher thermal conductivity than the heat insulating frame body (holding means) 18,
It can be made difficult to be transmitted to the Joe side. When the medical device 1 is used, the heat of the heat generating means 23 can be prevented from escaping in a direction other than the contact portion between the heat generating means 23 and the heat transfer plate 20, for example, in the lateral direction of the heat transfer plate 20 or above, so that the heat source part can be prevented. The heat of the heat generating means 23 such as the heat generating element 15 can be intensively and efficiently transferred to the heat transfer plate 20 side of the treatment portion 16. As a result, it is possible to prevent the heat of the heat source unit 15 from being transferred to the first gripping unit 7 side, so that the temperature of the heat transfer plate 20 that comes into contact with the living tissue does not rise quickly or temperature unevenness occurs. It is possible to prevent the coagulation ability and the incision ability from being deteriorated by the medical device 1.

【００４８】また、本実施の形態では伝熱板２０の上端
部に凹陥状の３つの熱源部取付け部２２を並設し、３つ
の発熱手段２３をそれぞれ収容するとともに、熱源部取
付け部２２の各前方の仕切り壁の固定溝２４に各発熱手
段２３の先端部を差し込み状態で半田付けなどの手段で
固定している。そして、保持枠１９の枠内の収容空間１
９ａに伝熱板２０の刃部２１より上側の部分と、発熱手
段２３と、リード線２５とを収容させ、その周囲を取り
囲むように保持枠１９の断熱枠体１８を設けている。こ
こで、処置部１６を保持する保持枠１９の断熱枠体１８
が比較的、剛性の高い材料で、かつ、一定の剛性を有す
る肉厚であり、更に、この保持枠１９の枠内の伝熱板２
０や熱源部１５である熱発生素子などの発熱手段２３と
の間の隙間２６が大きいので、第１把持部７や伝熱板２
０に横方向から強い力が加わっても、隙間２６の中の充
填材２８によってその力を緩和させることができる。そ
のため、発熱手段２３が発熱を繰り返した場合であって
も第１把持部７への熱源部１５である熱発生素子などの
発熱手段２３の取付けが不完全となったり、把持部７か
ら応力を受けて熱源部１５である熱発生素子などの発熱
手段２３自体が破損することを防止することがでる。Further, in this embodiment, three concave heat source portion mounting portions 22 are arranged in parallel on the upper end portion of the heat transfer plate 20, three heat generating means 23 are respectively accommodated, and the heat source portion mounting portion 22 is The front end of each heat generating means 23 is inserted into the fixing groove 24 of each front partition wall and fixed by means such as soldering. Then, the accommodation space 1 in the frame of the holding frame 19
A portion of the heat transfer plate 20 above the blade portion 21, the heat generating means 23, and the lead wire 25 are housed in 9a, and the heat insulating frame body 18 of the holding frame 19 is provided so as to surround the periphery thereof. Here, the heat insulating frame body 18 of the holding frame 19 that holds the treatment portion 16
Is a material having a relatively high rigidity and a thickness having a certain rigidity, and further, the heat transfer plate 2 in the frame of the holding frame 19.
0 and the heat generation means 23 such as a heat generating element which is the heat source portion 15 have a large gap 26, so that the first grip portion 7 and the heat transfer plate 2
Even if a strong force is applied to 0 from the lateral direction, the force can be alleviated by the filler 28 in the gap 26. Therefore, even when the heat generating means 23 repeatedly generates heat, attachment of the heat generating means 23 such as the heat generating element which is the heat source portion 15 to the first gripping portion 7 becomes incomplete, or stress is generated from the gripping portion 7. It is possible to prevent the heat generating means 23 such as the heat generating element which is the heat source portion 15 itself from being damaged.

【００４９】さらに、伝熱板２０の第２の挿入穴３１を
伝熱板２０の前後方向に長い長穴によって形成し、この
第２の挿入穴３１に保持枠１９側の支持ピン２９ｂを前
後方向に移動可能に緩く嵌めている。そのため、発熱手
段２３の熱発生素子が使用時（高温）と非使用時（常
温）とで大きく温度変化した場合の伝熱板２０と保持枠
１９の伸び量の違いによる支持ピン２９ｂの穴位置のず
れを吸収することができる。その結果、この第２の挿入
穴３１の長穴と保持枠１９側の支持ピン２９ｂとの係合
部によって発熱手段２３の発熱時に伝熱板２０と保持枠
１９との熱膨張の差を吸収することができるので、熱発
生素子が破損するような応力が発熱手段２３に加わらな
いように安全で確実に固定できる。Further, the second insertion hole 31 of the heat transfer plate 20 is formed by a long hole which is long in the front-rear direction of the heat transfer plate 20, and the support pin 29b on the side of the holding frame 19 is inserted in the second insertion hole 31 in the front-back direction. It is loosely fitted so that it can move in any direction. Therefore, the hole position of the support pin 29b due to the difference in the amount of expansion of the heat transfer plate 20 and the holding frame 19 when the temperature of the heat generating element of the heat generating means 23 largely changes between use (high temperature) and non-use (normal temperature). It is possible to absorb the deviation. As a result, the difference in thermal expansion between the heat transfer plate 20 and the holding frame 19 is absorbed by the engaging portion between the elongated hole of the second insertion hole 31 and the support pin 29b on the holding frame 19 side when the heat generating means 23 generates heat. Therefore, the heat generating element 23 can be securely and reliably fixed so as not to apply a stress that damages the heat generating element.

【００５０】また、図５（Ａ）〜（Ｃ）は本発明の第２
の実施の形態を示すものである。本実施の形態は第１の
実施の形態（図１乃至図４参照）の医療機器１の処置具
２の構成を次の通り変更したものである。なお、本実施
の形態では処置具２の基本構成は第１の実施形態とほぼ
同様なので、第１の実施形態と同一部分には同一の符号
を付してその説明を省略する。Further, FIGS. 5A to 5C show the second embodiment of the present invention.
FIG. In this embodiment, the configuration of the treatment tool 2 of the medical device 1 according to the first embodiment (see FIGS. 1 to 4) is changed as follows. Since the basic configuration of the treatment instrument 2 in this embodiment is substantially the same as that in the first embodiment, the same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

【００５１】すなわち、本実施の形態の処置具２では図
５（Ａ）に示すように第１把持部７に平面状のユニット
取付け面４１を設け、このユニット取付け面４１に加熱
処置ユニット１４が着脱可能に取付けられている。ここ
で、第１把持部７のユニット取付け面４１には複数の係
合穴４２が形成されている。That is, in the treatment tool 2 of the present embodiment, as shown in FIG. 5A, the first grip portion 7 is provided with a flat unit mounting surface 41, and the heat treatment unit 14 is mounted on the unit mounting surface 41. It is detachably attached. Here, a plurality of engagement holes 42 are formed in the unit mounting surface 41 of the first grip portion 7.

【００５２】さらに、加熱処置ユニット１４には図５
（Ｂ）に示すように略Ｕ字状の断面形状の剛性のある断
熱枠体４３が設けられている。この断熱枠体４３の上面
には図５（Ｃ）に示すように第１把持部７の各係合穴４
２と係脱可能に係合する複数の係合凸部４４が突設され
ている。Further, the heat treatment unit 14 is shown in FIG.
As shown in (B), a rigid heat insulating frame 43 having a substantially U-shaped cross section is provided. On the upper surface of the heat insulating frame 43, as shown in FIG. 5C, the engagement holes 4 of the first grip portion 7 are formed.
A plurality of engaging projections 44 that engage with the 2 in a disengageable manner are provided in a protruding manner.

【００５３】そこで、上記構成のものにあっては次の効
果を奏する。すなわち、本実施の形態の処置具２では略
Ｕ字型の断熱枠体４３により伝熱板２０の刃部２１より
上側の部分と発熱手段２３（図２（Ａ），（Ｂ）参照）
を覆っている。そのため、熱源部１５（発熱手段２３）
で発生した熱が、断熱枠体（保持手段）１８より熱伝導
率の高い伝熱板２０（処置部）に集中的に効率よく伝達
し、ジョー側に伝達され難いようにできる。医療機器１
の使用時に発熱手段２３の熱が発熱手段２３と伝熱板２
０との接触部以外の方向、例えば伝熱板２０の左右方向
や上方へ逃げることを防ぐことができるので、熱源部１
５である熱発生素子などの発熱手段２３の熱を処置部１
６の伝熱板２０側に集中的に効率よく伝達することがで
きる。その結果、本実施の形態でも第１の実施の形態と
同様に熱源部１５の熱が第１把持部７側に伝熱されるこ
とを防ぐことができるので、生体組織に接触する伝熱板
２０の温度が迅速に上昇しなかったり、温度ムラが生
じ、医療機器１による凝固能や、切開能の劣化が生じる
ことを防止することができる。Therefore, the following effects can be obtained with the above-mentioned structure. That is, in the treatment tool 2 of the present embodiment, the substantially U-shaped heat insulating frame 43 is used to heat the heat transfer plate 20 and the heat generating means 23 (see FIGS. 2A and 2B).
Covers. Therefore, the heat source unit 15 (heat generating means 23)
The heat generated in (1) can be efficiently and intensively transferred to the heat transfer plate 20 (treatment section) having a higher thermal conductivity than that of the heat insulating frame (holding means) 18, and can be prevented from being transferred to the jaw side. Medical equipment 1
The heat of the heat generating means 23 and the heat transfer plate 2 are
It is possible to prevent the heat source plate 1 from escaping in a direction other than the contact portion with 0, for example, in the lateral direction of the heat transfer plate 20 or upward.
5, the heat of the heat generating means 23 such as the heat generating element is treated by the treatment unit 1.
6 can be efficiently transferred to the heat transfer plate 20 side in a concentrated manner. As a result, in the present embodiment as well, as in the first embodiment, it is possible to prevent the heat of the heat source unit 15 from being transferred to the first gripping unit 7 side, so the heat transfer plate 20 that comes into contact with the biological tissue. It is possible to prevent the temperature of No. 1 from rising rapidly or the occurrence of temperature unevenness, resulting in deterioration of the coagulation ability and the incision ability of the medical device 1.

【００５４】また、図６乃至図８（Ａ），（Ｂ）は本発
明の第３の実施の形態を示すものである。図６は本実施
の形態の医療機器としての内視鏡下手術用の熱凝固切開
鉗子５１を示すものである。本実施の形態の熱凝固切開
鉗子５１には、細長い挿入部５２と、この挿入部５２の
基端部に連結された手元側の操作部５３とが設けられて
いる。FIGS. 6 to 8A and 8B show a third embodiment of the present invention. FIG. 6 shows a thermocoagulation / dissection forceps 51 for endoscopic surgery as a medical device of the present embodiment. The thermocoagulation / dissection forceps 51 of the present embodiment is provided with an elongated insertion portion 52 and a proximal-side operation portion 53 connected to the proximal end portion of the insertion portion 52.

【００５５】さらに、挿入部５２の先端部には固定ジョ
ー５４と、可動ジョー５５とが設けられている。ここ
で、挿入部５２には外管５６とこの外管５６の内部に軸
方向に移動自在に挿通された駆動軸５７とが設けられて
いる。そして、固定ジョー５４は挿入部５２の外管５６
の先端部に一体成形されている。Furthermore, a fixed jaw 54 and a movable jaw 55 are provided at the tip of the insertion portion 52. Here, the insertion portion 52 is provided with an outer tube 56 and a drive shaft 57 that is axially movably inserted into the outer tube 56. Then, the fixed jaw 54 is attached to the outer tube 56 of the insertion portion 52.
Is integrally molded at the tip of the.

【００５６】また、可動ジョー５５の基端部は外管５６
の先端部に外管５６の軸方向と直交する方向に配置され
た回転軸５８を中心に回転自在に軸支されている。ここ
で、外管５６の先端部には図７（Ａ）に示すように略Ｕ
字状の軸支部５９が形成されている。この軸支部５９に
は２つの軸支アーム５９ａ，５９ｂが平行に配設されて
いる。そして、これらの軸支アーム５９ａ，５９ｂ間に
回転軸５８が架設されている。The base end of the movable jaw 55 is an outer tube 56.
Is rotatably supported at the tip end of the outer tube 56 about a rotating shaft 58 arranged in a direction orthogonal to the axial direction of the outer tube 56. Here, as shown in FIG. 7 (A), the tip of the outer tube 56 is substantially U-shaped.
A character-shaped shaft support portion 59 is formed. Two axial support arms 59a and 59b are arranged in parallel on the axial support 59. A rotary shaft 58 is installed between the shaft support arms 59a and 59b.

【００５７】さらに、可動ジョー５５の基端部には２つ
の軸支アーム５９ａ，５９ｂ間に挿入される細幅の延設
部６０が形成されている。この延設部６０には図７
（Ｂ）中で回転軸５８よりも下向きに山形の突設部６１
が突設されている。この突設部６１には図８（Ａ）に示
すように駆動軸５７の先端部が揺動軸６２を中心に回動
自在に連結されている。Further, the base end portion of the movable jaw 55 is formed with a narrow width extending portion 60 which is inserted between the two shaft supporting arms 59a and 59b. The extension 60 is shown in FIG.
(B) In FIG.
Is projected. As shown in FIG. 8A, the tip of the drive shaft 57 is connected to the protruding portion 61 so as to be rotatable about the swing shaft 62.

【００５８】また、操作部５３には、操作部本体６３
と、この操作部本体６３と一体に設けられた固定ハンド
ル６４と、操作部本体６３に枢支軸６５を支点として回
動自在に設けられた可動ハンドル６６とが設けられてい
る。さらに、可動ハンドル６６の上端部には駆動軸５７
の先端部が連結されている。そして、固定ハンドル６４
に対して可動ハンドル６６が枢支軸６５を支点として回
動操作される動作にともない駆動軸５７が軸方向に進退
駆動され、この駆動軸５７の進退動作にともない固定ジ
ョー５４に対して可動ジョー５５が回転軸５８を中心に
回転駆動されて固定ジョー５４と可動ジョー５５との間
が開閉操作されるようになっている。ここで、図８
（Ａ）中に矢印で示すように駆動軸５７が手元側に引張
り操作される動作にともない可動ジョー５５が固定ジョ
ー５４側に閉じる方向に移動されるようになっている。
さらに、図８（Ｂ）中に矢印で示すように駆動軸５７が
先端側に押し出される動作にともない可動ジョー５５が
固定ジョー５４側から離れる開方向に移動されるように
なっている。The operation unit 53 includes an operation unit main body 63.
A fixed handle 64 integrally provided with the operating portion main body 63, and a movable handle 66 rotatably provided on the operating portion main body 63 with a pivot shaft 65 as a fulcrum are provided. Further, the drive shaft 57 is attached to the upper end of the movable handle 66.
Are connected at their tips. And the fixed handle 64
On the other hand, as the movable handle 66 is rotated about the pivot shaft 65 as a fulcrum, the drive shaft 57 is driven forward and backward in the axial direction. With the forward and backward movement of the drive shaft 57, the movable jaw is moved relative to the fixed jaw 54. 55 is rotatably driven around a rotary shaft 58 to open and close between the fixed jaw 54 and the movable jaw 55. Here, FIG.
As shown by the arrow in (A), the movable jaw 55 is moved toward the fixed jaw 54 side in the closing direction with the operation of pulling the drive shaft 57 toward the hand side.
Further, as shown by the arrow in FIG. 8 (B), the movable jaw 55 is moved in the opening direction away from the fixed jaw 54 side as the drive shaft 57 is pushed out to the tip side.

【００５９】また、固定ジョー５４には第１の実施の形
態における処置具２の加熱処置ユニット１４と略同様の
構成の加熱処置ユニット６７が装着されている。さら
に、可動ジョー５５には第１の実施の形態における処置
具２の平板状の受け部３６と略同様の構成の平板状の受
け部６８が装着されている。Further, the fixed jaw 54 is equipped with a heat treatment unit 67 having substantially the same structure as the heat treatment unit 14 of the treatment instrument 2 in the first embodiment. Further, the movable jaw 55 is provided with a flat plate-shaped receiving portion 68 having substantially the same configuration as the flat plate-shaped receiving portion 36 of the treatment instrument 2 according to the first embodiment.

【００６０】また、操作部本体６３には加熱処置ユニッ
ト６７の発熱手段２３（図２（Ａ），（Ｂ）参照）に接
続されたリード線２５の基端部が外部側に延出されてい
る。そして、このリード線２５の延出端部にはコネクタ
６９が接続されている。Further, the base end portion of the lead wire 25 connected to the heat generating means 23 of the heat treatment unit 67 (see FIGS. 2A and 2B) is extended to the outside of the operation portion main body 63. There is. A connector 69 is connected to the extended end of the lead wire 25.

【００６１】次に、上記構成の作用について説明する。
本実施の形態の熱凝固切開鉗子５１の使用時にはこの熱
凝固切開鉗子５１の固定ハンドル６４および可動ハンド
ル６６の手元側の各リングに手指を差し込んだ状態で、
固定ハンドル６４に対して可動ハンドル６６が枢支軸６
５を支点として回動操作することにより、駆動軸５７が
軸方向に進退駆動され、この駆動軸５７の進退動作にと
もない固定ジョー５４に対して可動ジョー５５が回転軸
５８を中心に回転駆動されて固定ジョー５４と可動ジョ
ー５５との間が開閉操作される。Next, the operation of the above configuration will be described.
When using the thermocoagulation / dissection forceps 51 of the present embodiment, with the fingers inserted into the respective rings on the proximal side of the fixed handle 64 and the movable handle 66 of the thermocoagulation / dissection forceps 51,
The movable handle 66 has a pivot shaft 6 with respect to the fixed handle 64.
By rotating about 5 as a fulcrum, the drive shaft 57 is axially advanced and retracted, and the movable jaw 55 is rotationally driven around the rotary shaft 58 with respect to the fixed jaw 54 as the drive shaft 57 is advanced and retracted. The open / close operation is performed between the fixed jaw 54 and the movable jaw 55.

【００６２】そして、可動ジョー５５と固定ジョー５４
との間を閉じて可動ジョー５５と固定ジョー５４との間
に生体組織を挟み込んだ状態で、加熱処置ユニット６７
の熱源部１５（図２（Ａ），（Ｂ）参照）が通電加熱さ
れる。The movable jaw 55 and the fixed jaw 54
And the living tissue is sandwiched between the movable jaw 55 and the fixed jaw 54.
The heat source section 15 (see FIGS. 2A and 2B) is electrically heated.

【００６３】このとき、熱源部１５の３つの発熱手段２
３からの熱は伝熱板２０に伝熱され、伝熱板２０の先細
状の刃部２１が高温度に加熱される。そのため、可動ジ
ョー５５と固定ジョー５４との間で伝熱板２０の刃部２
１に圧接されている生体組織はこの刃部２１の熱によっ
て加熱され、生体組織の凝固や切開が効率良く行なわれ
る。At this time, the three heat generating means 2 of the heat source section 15
The heat from 3 is transferred to the heat transfer plate 20, and the tapered blade portion 21 of the heat transfer plate 20 is heated to a high temperature. Therefore, the blade portion 2 of the heat transfer plate 20 is interposed between the movable jaw 55 and the fixed jaw 54.
The living tissue pressed against 1 is heated by the heat of the blade portion 21, and the living tissue is efficiently coagulated and incised.

【００６４】そこで、上記構成のものにあっては次の効
果を奏する。すなわち、本実施の形態の熱凝固切開鉗子
５１の加熱処置ユニット６７では略Ｕ字型の断熱枠体１
８により伝熱板２０の刃部２１より上側の部分と発熱手
段２３を覆っている。そのため、熱源部１５（発熱手段
２３）で発生した熱が、断熱枠体（保持手段）１８より
熱伝導率の高い伝熱板２０（処置部）に集中的に効率よ
く伝達し、ジョー側に伝達され難いようにできる。熱凝
固切開鉗子５１の使用時に発熱手段２３の熱が発熱手段
２３と伝熱板２０との接触部以外の方向、例えば伝熱板
２０の左右方向や上方へ逃げることを防ぐことができる
ので、熱源部１５である熱発生素子などの発熱手段２３
の熱を処置部１６の伝熱板２０側に集中的に効率よく伝
達することができる。その結果、熱源部１５の熱が固定
ジョー５４側に伝熱されることを防ぐことができるの
で、生体組織に接触する伝熱板２０の温度が迅速に上昇
しなかったり、温度ムラが生じ、熱凝固切開鉗子５１に
よる凝固能や、切開能の劣化が生じることを防止するこ
とができる。Therefore, the following effects are obtained with the above-mentioned structure. That is, in the heat treatment unit 67 of the thermocoagulation / dissection forceps 51 of the present embodiment, the substantially U-shaped heat insulating frame 1 is used.
8 covers the portion above the blade portion 21 of the heat transfer plate 20 and the heat generating means 23. Therefore, the heat generated in the heat source portion 15 (heat generating means 23) is intensively and efficiently transmitted to the heat transfer plate 20 (treatment portion) having a higher thermal conductivity than that of the heat insulating frame body (holding means) 18, and the heat is transmitted to the jaw side. It can be difficult to be transmitted. Since it is possible to prevent the heat of the heat generating means 23 from escaping in a direction other than the contact portion between the heat generating means 23 and the heat transfer plate 20, for example, in the left-right direction or above the heat transfer plate 20 when the thermocoagulation / dissection forceps 51 is used. Heat generating means 23 such as a heat generating element which is the heat source unit 15
The heat can be intensively and efficiently transferred to the heat transfer plate 20 side of the treatment portion 16. As a result, it is possible to prevent the heat of the heat source unit 15 from being transferred to the fixed jaw 54 side, so that the temperature of the heat transfer plate 20 that comes into contact with the biological tissue does not rise quickly or temperature unevenness occurs, and It is possible to prevent the coagulation ability and the incision ability from being deteriorated by the coagulation / dissection forceps 51.

【００６５】また、図９乃至図１２は本発明の第４の実
施の形態を示すものである。本実施の形態は第１の実施
の形態（図１乃至図４参照）の医療機器１の処置具２の
構成を次の通り変更したものである。なお、本実施の形
態では医療機器１の基本構成は第１の実施形態とほぼ同
様なので、第１の実施形態と同一部分には同一の符号を
付してその説明を省略する。9 to 12 show the fourth embodiment of the present invention. In this embodiment, the configuration of the treatment tool 2 of the medical device 1 according to the first embodiment (see FIGS. 1 to 4) is changed as follows. Since the basic configuration of the medical device 1 according to the present embodiment is substantially the same as that of the first embodiment, the same parts as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

【００６６】すなわち、本実施の形態の処置具２では第
１把持部７の内部の断熱枠体１８の材質としては例えば
テフロン（登録商標）等の熱伝導率が低く、生体組織の
貼り付きを防ぐために非粘着性の高い材料が用いられ
る。さらに、処置部１６の伝熱板２０の材質としては銅
等の熱伝導率の高い材料が用いられる。この伝熱板２０
の刃部２１の少なくとも刃先部には、外周に非粘着性を
持たせるため、テフロン（登録商標）等のコーティング
部７１が形成されている。That is, in the treatment tool 2 of the present embodiment, the material of the heat insulating frame 18 inside the first grip portion 7 is Teflon (registered trademark) or the like having a low thermal conductivity, and sticking of biological tissue is not possible. A highly non-sticky material is used to prevent this. Further, as the material of the heat transfer plate 20 of the treatment portion 16, a material having high thermal conductivity such as copper is used. This heat transfer plate 20
A coating portion 71 of Teflon (registered trademark) or the like is formed on at least the cutting edge portion of the blade portion 21 in order to make the outer periphery non-adhesive.

【００６７】また、第１把持部７の凹陥状の装着溝３２
の内底部には図１０（Ｃ）に示すように断熱部１７の断
熱枠体１８との間に断熱用の空気層を設けるための２つ
の溝部７２（非接触部）が第１把持部７の軸方向に沿っ
て延設されている。なお、断熱枠体１８は、伝熱板２０
を介して発熱手段２３を間接的に保持するよう構成され
ている。The concave mounting groove 32 of the first grip portion 7 is also provided.
As shown in FIG. 10C, two groove portions 72 (non-contact portions) for providing an air layer for heat insulation between the heat insulating portion 17 and the heat insulating frame 18 are formed on the inner bottom portion of the first grip portion 7. Is extended along the axial direction of. In addition, the heat insulating frame 18 is used for the heat transfer plate 20.
It is configured to indirectly hold the heat generating means 23 via the.

【００６８】さらに、図１１に示すように第１把持部７
と断熱枠体１８の両側面には下面を斜め上方に削った傾
斜面７３，７４がそれぞれ形成されている。ここで、断
熱枠体１８の傾斜面７４と伝熱板２０の刃部２１の中心
線とのなす角αは９０°よりも大きい鈍角に設定されて
いる。同様に、第１把持部７の傾斜面７３と伝熱板２０
の刃部２１の中心線とのなす角αも９０°よりも大きい
鈍角に設定されている。これにより、図１２に示すよう
に伝熱板２０の刃部２１の露出分を増加させるととも
に、第１把持部７の刃部２１と第２把持部８との間で生
体組織を把持した際に第１把持部７の傾斜面７３と断熱
枠体１８の傾斜面７４とによって処置部１６の両側面に
生体組織が接触することを防止する逃げ部（接触防止
部）７５が形成されている。Further, as shown in FIG. 11, the first grip portion 7
On both side surfaces of the heat insulating frame 18, inclined surfaces 73 and 74 are formed by cutting the lower surface obliquely upward. Here, the angle α formed by the inclined surface 74 of the heat insulating frame 18 and the center line of the blade portion 21 of the heat transfer plate 20 is set to an obtuse angle larger than 90 °. Similarly, the inclined surface 73 of the first grip portion 7 and the heat transfer plate 20
The angle α with the center line of the blade 21 is also set to an obtuse angle larger than 90 °. As a result, when the exposed portion of the blade portion 21 of the heat transfer plate 20 is increased as shown in FIG. 12, and when the living tissue is grasped between the blade portion 21 of the first grasping portion 7 and the second grasping portion 8. In addition, the inclined surface 73 of the first grip portion 7 and the inclined surface 74 of the heat insulating frame 18 are formed with escape portions (contact prevention portions) 75 that prevent contact of living tissue with both side surfaces of the treatment portion 16. .

【００６９】また、断熱枠体１８の下端部は第１把持部
７の傾斜面７３の下端部よりも下方に突出され、第１把
持部７の傾斜面７３の下端部と、断熱枠体１８の傾斜面
７４の上端部との間には適宜の長さｔの段差部７６が形
成されている。これにより、図１２に示すように第１把
持部７の刃部２１と第２把持部８との間で生体組織Ｈを
把持した際に生体組織Ｈが第１把持部７に当接する前に
断熱枠体１８を生体組織Ｈに接触させることにより、生
体組織Ｈに第１把持部７が当接して熱が逃げることを防
止するようになっている。また、第１把持部７に生体組
織Ｈが張り付くのを防止するようになっている。Further, the lower end portion of the heat insulating frame 18 is projected below the lower end portion of the inclined surface 73 of the first grip portion 7, and the lower end portion of the inclined surface 73 of the first grip portion 7 and the heat insulating frame body 18 are provided. A stepped portion 76 having an appropriate length t is formed between the inclined surface 74 and the upper end portion. Accordingly, as shown in FIG. 12, when the living tissue H is held between the blade portion 21 of the first holding portion 7 and the second holding portion 8, before the living tissue H comes into contact with the first holding portion 7. By bringing the heat insulating frame 18 into contact with the living tissue H, the first grip portion 7 comes into contact with the living tissue H to prevent heat from escaping. The living tissue H is prevented from sticking to the first grip portion 7.

【００７０】また、本実施の形態では、第１把持部７に
処置部１６の先方に延出された延出部７７が形成されて
いる。この延出部７７には、先端側に向かうにしたがっ
て細くなる先細り部７８が形成されている。同様に、第
２把持部８には第１把持部７の延出部７７と対応する形
状の延出部７９が形成されている。この延出部７９に
も、先端側に向かうにしたがって細くなる先細り部８０
が形成されている。Further, in the present embodiment, the first gripping portion 7 is formed with the extending portion 77 extending beyond the treatment portion 16. The extending portion 77 is formed with a tapered portion 78 that becomes thinner toward the tip side. Similarly, the second grip portion 8 is formed with an extension portion 79 having a shape corresponding to the extension portion 77 of the first grip portion 7. The extending portion 79 also has a tapered portion 80 that becomes thinner toward the tip side.
Are formed.

【００７１】さらに、第１把持部７および第２把持部８
には図１０（Ａ），（Ｂ）に示すように第１把持部７と
第２把持部８とを閉じた際に、第１把持部７の延出部７
７と第２把持部８の延出部７９の対向面間に隙間Ｓが生
じるように設定されている。これにより、第１把持部７
と第２把持部８とを閉じた際に、第１把持部７の刃部２
１と第２把持部８の受け部３６とが接触し、第１把持部
７の延出部７７と第２把持部８の延出部７９の対向面間
は接触しない構造になっている。Further, the first grip portion 7 and the second grip portion 8
10A and 10B, when the first grip portion 7 and the second grip portion 8 are closed, the extension portion 7 of the first grip portion 7 is
It is set so that a gap S is formed between the facing surfaces of the extension portion 79 of the second grip portion 8 and the second grip portion 7. Thereby, the first grip 7
And the second grip portion 8 are closed, the blade portion 2 of the first grip portion 7 is closed.
1 and the receiving portion 36 of the second grip portion 8 are in contact with each other, and the extending surfaces 77 of the first grip portion 7 and the extending portion 79 of the second grip portion 8 are not in contact with each other.

【００７２】また、図１０（Ｂ）に示すように伝熱板２
０の前端部には発熱手段２３の取付け位置よりも前方に
延設された前方延設部８１が形成されている。これによ
り、発熱手段２３の熱を前方延設部８１に伝熱すること
により、第１把持部７の前端部に格別に発熱手段２３を
取付けることなく第１把持部７の前端部を効率よく加熱
することができる。そのため、第１把持部７に発熱手段
２３を取付ける場合に比べて第１把持部７の前端部を先
細化することができ、第１把持部７の延出部７７と第２
把持部８の延出部７９の先細り部７８，８０によって生
体組織Ｈの剥離操作などを行なうことができる。Further, as shown in FIG. 10B, the heat transfer plate 2
A front extension portion 81 extending forward of the mounting position of the heat generating means 23 is formed at the front end portion of 0. Accordingly, the heat of the heat generating means 23 is transferred to the front extension portion 81, so that the front end portion of the first grip portion 7 can be efficiently attached without attaching the heat generating means 23 to the front end portion of the first grip portion 7. It can be heated. Therefore, the front end portion of the first grip portion 7 can be tapered as compared with the case where the heat generating means 23 is attached to the first grip portion 7, and the extension portion 77 of the first grip portion 7 and the second
By the tapered portions 78 and 80 of the extending portion 79 of the grip portion 8, the biological tissue H can be peeled off.

【００７３】次に、上記構成の本実施の形態の作用につ
いて説明する。本実施の形態では処置具２の第１操作ア
ーム４および第２操作アーム５の手元側の各リング９に
手指を差し込んだ状態で、第１操作アーム４および第２
操作アーム５を回転軸６を中心に回動操作することによ
り、第１把持部７と第２把持部８との間が開閉操作され
る。そして、図１２に示すように、第１把持部７と第２
把持部８との間を閉じて第１把持部７と第２把持部８と
の間に生体組織Ｈを挟み込む。このとき、伝熱板２０の
先細状の刃部２１と受け部３６との間で生体組織Ｈが圧
縮され、生体組織Ｈが圧迫された状態で把持される。な
お、伝熱板２０の刃部２１の先端は生体組織Ｈを切るほ
どには鋭利でなく、鈍な形状であり、生体組織Ｈが機械
的に切開されることはない。Next, the operation of the present embodiment having the above structure will be described. In the present embodiment, the first operation arm 4 and the second operation arm 4 of the treatment instrument 2 are inserted in the respective rings 9 on the proximal side of the first operation arm 4 and the second operation arm 5 with their fingers inserted.
By rotating the operation arm 5 about the rotation shaft 6, the opening and closing operation is performed between the first grip portion 7 and the second grip portion 8. Then, as shown in FIG. 12, the first grip portion 7 and the second grip portion 7
The living tissue H is sandwiched between the first gripping portion 7 and the second gripping portion 8 with the gripping portion 8 closed. At this time, the living tissue H is compressed between the tapered blade portion 21 of the heat transfer plate 20 and the receiving portion 36, and the living tissue H is gripped in a compressed state. The tip of the blade portion 21 of the heat transfer plate 20 is not sharp enough to cut the living tissue H and has a blunt shape, so that the living tissue H is not mechanically cut.

【００７４】続いて、電源装置３から発熱手段２３に通
電することにより、加熱処置ユニット１４の各発熱手段
２３が通電加熱されて発熱される。このとき、各発熱手
段２３の熱は、伝熱板２０に伝熱されて伝熱板２０が発
熱する。そのため、伝熱板２０と受け部３６に接触する
生体組織Ｈの部分の圧力が高い状態で凝固される。Subsequently, by energizing the heat generating means 23 from the power supply device 3, each heat generating means 23 of the heat treatment unit 14 is electrically heated to generate heat. At this time, the heat of each heat generating means 23 is transferred to the heat transfer plate 20, and the heat transfer plate 20 generates heat. Therefore, the portion of the living tissue H that contacts the heat transfer plate 20 and the receiving portion 36 is solidified in a high pressure state.

【００７５】さらに、生体組織Ｈの凝固によって生体組
織Ｈの水分の蒸発が進み、もろくなった生体組織Ｈが切
れて切開が実施される。Further, the coagulation of the living tissue H promotes the evaporation of water in the living tissue H, and the fragile living tissue H is cut and an incision is made.

【００７６】そこで、上記構成のものにあっては次の効
果を奏する。すなわち、本実施の形態の処置具２では略
Ｕ字型の断熱枠体１８により伝熱板２０の刃部２１より
上側の部分と発熱手段２３（図１０（Ｃ）参照）を覆っ
ている。そのため、熱源部１５（発熱手段２３）で発生
した熱が、断熱枠体（保持手段）１８より熱伝導率の高
い伝熱板２０（処置部）に集中的に効率よく伝達し、ジ
ョー側に伝達され難いようにできる。医療機器１の使用
時に発熱手段２３の熱が発熱手段２３と伝熱板２０との
接触部以外の方向、例えば伝熱板２０の左右方向や上方
へ逃げることを防ぐことができるので、熱源部１５であ
る熱発生素子などの発熱手段２３の熱を処置部１６の伝
熱板２０側に集中的に効率よく伝達することができる。
その結果、本実施の形態でも第１の実施の形態と同様に
熱源部１５の熱が第１把持部７側に伝熱されることを防
ぐことができるので、生体組織に接触する伝熱板２０の
温度が迅速に上昇しなかったり、温度ムラが生じ、医療
機器１による凝固能や、切開能の劣化が生じることを防
止することができる。Therefore, the following effects are obtained with the above-mentioned structure. That is, in the treatment device 2 of the present embodiment, the substantially U-shaped heat insulating frame 18 covers the portion above the blade portion 21 of the heat transfer plate 20 and the heat generating means 23 (see FIG. 10C). Therefore, the heat generated in the heat source portion 15 (heat generating means 23) is intensively and efficiently transmitted to the heat transfer plate 20 (treatment portion) having a higher thermal conductivity than that of the heat insulating frame body (holding means) 18, and the heat is transmitted to the jaw side. It can be difficult to be transmitted. When the medical device 1 is used, the heat of the heat generating means 23 can be prevented from escaping in a direction other than the contact portion between the heat generating means 23 and the heat transfer plate 20, for example, in the lateral direction of the heat transfer plate 20 or above, so that the heat source part can be prevented. The heat of the heat generating means 23 such as the heat generating element 15 can be intensively and efficiently transferred to the heat transfer plate 20 side of the treatment portion 16.
As a result, in the present embodiment as well, as in the first embodiment, it is possible to prevent the heat of the heat source unit 15 from being transferred to the first gripping unit 7 side, so the heat transfer plate 20 that comes into contact with the biological tissue. It is possible to prevent the temperature of No. 1 from rising rapidly or the occurrence of temperature unevenness, resulting in deterioration of the coagulation ability and the incision ability of the medical device 1.

【００７７】また、本実施の形態では金属材料製の第１
把持部７および断熱枠体１８の両側面に下面を斜め上方
に削った傾斜面７３，７４をそれぞれ形成することによ
り、伝熱板２０の刃部２１の露出面積が大きくなる。そ
のため、伝熱板２０の刃部２１と生体組織Ｈとの接触面
積が広がり、確実な凝固が可能である。In this embodiment, the first metallic material is used.
The exposed surface of the blade portion 21 of the heat transfer plate 20 is increased by forming the inclined surfaces 73 and 74 on the both side surfaces of the grip portion 7 and the heat insulating frame 18 by cutting the lower surface obliquely upward. Therefore, the contact area between the blade portion 21 of the heat transfer plate 20 and the living tissue H is expanded, and reliable solidification is possible.

【００７８】さらに、断熱枠体１８の傾斜面７４と伝熱
板２０の刃部２１の中心線とのなす角αは９０°よりも
大きい鈍角に設定され、同様に、第１把持部７の傾斜面
７３と伝熱板２０の刃部２１の中心線とのなす角αも９
０°よりも大きい鈍角に設定されて逃げ部７５が形成さ
れている。これにより、第１把持部７の刃部２１と第２
把持部８とを閉じた際に第１把持部７の傾斜面７３と断
熱枠体１８の傾斜面７４との逃げ部７５により、処置部
１６の両側面に生体組織Ｈが接触することを防止するこ
とができる。そのため、第１把持部７の刃部２１と第２
把持部８との間で生体組織Ｈを把持した際に第１把持部
７の刃部２１に生体組織Ｈを押圧する圧力を集中させる
ことができるので、第１把持部７の刃部２１を生体組織
Ｈに密着させて十分に圧縮させることができる。その結
果、生体組織Ｈの凝固力が高く、更に凝固と同時に切開
も可能である。Furthermore, the angle α formed between the inclined surface 74 of the heat insulating frame 18 and the center line of the blade portion 21 of the heat transfer plate 20 is set to an obtuse angle larger than 90 °, and similarly, the first gripping portion 7 The angle α formed by the inclined surface 73 and the center line of the blade portion 21 of the heat transfer plate 20 is also 9
An escape portion 75 is formed with an obtuse angle larger than 0 °. Thereby, the blade portion 21 of the first grip portion 7 and the second
Preventing the biological tissue H from contacting both side surfaces of the treatment portion 16 by the relief portion 75 between the inclined surface 73 of the first grasping portion 7 and the inclined surface 74 of the heat insulating frame body 18 when the grasping portion 8 is closed. can do. Therefore, the blade portion 21 of the first grip portion 7 and the second
Since the pressure for pressing the living tissue H can be concentrated on the blade portion 21 of the first grip portion 7 when the living tissue H is gripped between the grip portion 8 and the blade portion 21 of the first grip portion 7. It can be brought into close contact with the living tissue H and sufficiently compressed. As a result, the coagulation force of the living tissue H is high, and further incision can be performed simultaneously with coagulation.

【００７９】また、断熱枠体１８は非粘着性の材質でで
きており、第１把持部７より下に突出しているので、第
１把持部７、断熱枠体１８に生体組織Ｈが貼り付かない
効果がある。Since the heat insulating frame 18 is made of a non-adhesive material and projects below the first grip 7, the living tissue H is attached to the first grip 7 and the heat insulating frame 18. There is an effect that does not.

【００８０】さらに、本実施の形態では断熱枠体１８の
下端部を第１把持部７の傾斜面７３の下端部よりも下方
に突出させ、第１把持部７の傾斜面７３の下端部と、断
熱枠体１８の傾斜面７４の上端部との間に適宜の長さｔ
の段差部７６を形成している。そのため、第１把持部７
と、第２把持部８とを閉じた際に、生体組織Ｈが断熱枠
体１８に当接した場合であっても生体組織Ｈにおける断
熱枠体１８との当接部が第１把持部７の下面に接触する
ことを確実に防止することができる。Further, in the present embodiment, the lower end of the heat insulating frame 18 is made to project below the lower end of the inclined surface 73 of the first grip portion 7 so that the lower end of the inclined surface 73 of the first grip portion 7 is formed. , An appropriate length t between the upper end of the inclined surface 74 of the heat insulating frame 18 and
To form a stepped portion 76. Therefore, the first grip 7
When the living tissue H contacts the heat insulating frame 18 when the second grip 8 is closed, the contact portion of the living tissue H with the heat insulating frame 18 is the first grip 7 It is possible to reliably prevent contact with the lower surface of the.

【００８１】また、第１把持部７および第２把持部８の
先端部に先端側に向かうにしたがって細くなる先細り部
７８、８０を形成したので、第１把持部７および第２把
持部８の先端部を細径化できる。Further, since the tapered portions 78 and 80 are formed at the tips of the first and second grips 7 and 8 toward the tip side, the tapered portions 78 and 80 of the first and second grips 7 and 8 are formed. The tip can be made thinner.

【００８２】さらに、第１把持部７および第２把持部８
は図１０（Ａ），（Ｂ）に示すように第１把持部７と第
２把持部８とを閉じた際に、第１把持部７の延出部７７
と第２把持部８の延出部７９の対向面間に隙間Ｓが生じ
るように設定されている。これにより、第１把持部７と
第２把持部８とを閉じた際に、第１把持部７の刃部２１
と第２把持部８の受け部３６とを接触させ、第１把持部
７の延出部７７と第２把持部８の延出部７９の対向面間
は接触しない構造になっているので、凝固・切開時に伝
熱板２０の刃部２１と、受け部３６との間で把持された
生体組織Ｈに圧縮力を集中させることができる。Further, the first grip portion 7 and the second grip portion 8
When the first grip 7 and the second grip 8 are closed as shown in FIGS. 10 (A) and 10 (B), the extension 77 of the first grip 7 is
And a gap S is formed between the facing surfaces of the extending portion 79 of the second grip portion 8. Thereby, when the first grip portion 7 and the second grip portion 8 are closed, the blade portion 21 of the first grip portion 7 is closed.
And the receiving portion 36 of the second grip portion 8 are brought into contact with each other, and the facing surfaces of the extending portion 77 of the first grip portion 7 and the extending portion 79 of the second grip portion 8 are not in contact with each other. The compressive force can be concentrated on the living tissue H grasped between the blade portion 21 of the heat transfer plate 20 and the receiving portion 36 at the time of coagulation / incision.

【００８３】さらに、伝熱板２０は熱伝導率の高い材質
でできているため、発熱手段２３の熱をこの発熱手段２
３の取付け位置よりも前方に延設された前方延設部８１
に伝熱することにより、第１把持部７の前端部に格別に
発熱手段２３を取付けることなく第１把持部７の前端部
を効率よく加熱することができる。その結果、第１把持
部７の前端部に発熱手段２３を取付ける場合に比べて第
１把持部７の前端部の高さを抑え、先細化することがで
きる。したがって、第１把持部７の延出部７７と第２把
持部８の延出部７９の先細り部７８，８０によって生体
組織Ｈの剥離操作などを行なうことができる。Further, since the heat transfer plate 20 is made of a material having a high thermal conductivity, the heat of the heat generating means 23 is transferred to the heat generating means 2.
Front extension part 81 extended forward from the attachment position of No. 3
By transferring heat to the front end portion of the first grip portion 7, the front end portion of the first grip portion 7 can be efficiently heated without attaching the heat generating means 23 to the front end portion of the first grip portion 7. As a result, the height of the front end portion of the first grip portion 7 can be suppressed and tapered as compared with the case where the heat generating means 23 is attached to the front end portion of the first grip portion 7. Therefore, the extending portion 77 of the first grasping portion 7 and the tapered portions 78 and 80 of the extending portion 79 of the second grasping portion 8 can perform the peeling operation of the living tissue H or the like.

【００８４】また、図１３（Ａ），（Ｂ）および図１４
（Ａ），（Ｂ）は本発明の第５の実施の形態を示すもの
である。図１３（Ａ）は本実施の形態の処置具９１を示
すものである。この処置具９１には、細長い挿入部９２
と、この挿入部９２の基端部に連結された手元側の操作
部９３とが設けられている。挿入部９２の先端には開閉
可能な一対の把持部（ジョー）９４，９５（第１把持部
９４および第２把持部９５）が設けられている。In addition, FIGS. 13A, 13B and 14
(A) and (B) show a fifth embodiment of the present invention. FIG. 13A shows a treatment tool 91 of the present embodiment. The treatment instrument 91 includes an elongated insertion portion 92.
And an operating portion 93 on the proximal side connected to the base end of the insertion portion 92. A pair of gripping parts (jaws) 94 and 95 (first gripping part 94 and second gripping part 95) that can be opened and closed are provided at the tip of the insertion part 92.

【００８５】手元操作部９３は、操作部本体９６と、操
作部本体９６と一体に設けられたハンドル９７と、操作
部本体９６に枢支軸９８を支点として回動自在に軸支さ
れた可動ハンドル９９とから構成されている。さらに、
操作部本体９６には挿入部９２の軸心を回転中心として
挿入部９２を軸回り方向に回転操作する回転操作部１０
０が設けられている。The hand operation section 93 is a movable body rotatably supported on the operation section body 96, a handle 97 provided integrally with the operation section body 96, and a pivot shaft 98 as a fulcrum. It is composed of a handle 99. further,
The operation portion main body 96 includes a rotation operation portion 10 for rotating the insertion portion 92 around the axis about the axis of the insertion portion 92.
0 is provided.

【００８６】また、挿入部９２には図１３（Ｂ）に示す
ように細径パイプによって形成された外管１０１が設け
られている。この外管１０１の内部にはチャンネルパイ
プ１０２と駆動軸チャンネル１０３とが平行に設けられ
ている。チャンネルパイプ１０２の内部には後述する同
軸ケーブル１２７を挿通する挿通空間１０４が設けられ
ている。さらに、駆動軸チャンネル１０３には駆動軸１
０５が進退自在に挿通されている。この駆動軸１０５の
基端部は可動ハンドル９９に連結されている。そして、
可動ハンドル９９の回動動作に連動して駆動軸１０５が
軸方向に進退駆動されるようになっている。Further, as shown in FIG. 13B, the insertion portion 92 is provided with an outer tube 101 formed of a small diameter pipe. Inside this outer tube 101, a channel pipe 102 and a drive shaft channel 103 are provided in parallel. Inside the channel pipe 102, an insertion space 104 for inserting a coaxial cable 127 described later is provided. Further, the drive shaft channel 103 has a drive shaft 1
05 is freely inserted and removed. The base end of the drive shaft 105 is connected to the movable handle 99. And
The drive shaft 105 is driven to move back and forth in the axial direction in conjunction with the rotating operation of the movable handle 99.

【００８７】また、挿入部９２の先端部には前方に突出
された二股状の支持部材１０６が設けられている。この
支持部材１０６の根元部１０６ａは外管１０１の先端に
固定されている。支持部材１０６の先端部間には横方向
に枢支ピン１０７が貫通して設けられている。この枢支
ピン１０７には第２把持部９５の基端部が回動自在に枢
支されている。A bifurcated support member 106 protruding forward is provided at the tip of the insertion portion 92. The root portion 106 a of the support member 106 is fixed to the tip of the outer tube 101. A pivot pin 107 is provided so as to extend laterally between the tip ends of the support members 106. The base end portion of the second grip portion 95 is rotatably supported on the pivot pin 107.

【００８８】また、第１把持部９４の基端部には二股部
９４ａが形成されている。この二股部９４ａは連結ピン
１０８を介して駆動軸１０５に回動自在に連結されてい
る。さらに、第２把持部９５の基端部には二股状の連結
部９５ａが形成されている。この連結部９５ａは接続ピ
ン１０９によって第１把持部９４の二股部９４ａに回動
自在に接続されている。A bifurcated portion 94a is formed at the base end of the first grip portion 94. The forked portion 94a is rotatably connected to the drive shaft 105 via a connecting pin 108. Further, a bifurcated connecting portion 95a is formed at the base end portion of the second grip portion 95. The connecting portion 95a is rotatably connected to the forked portion 94a of the first grip portion 94 by a connection pin 109.

【００８９】従って、可動ハンドル９９を図１３（Ａ）
中でａ方向に回動すると、駆動軸１０５が前進する。こ
の駆動軸１０５の前進時には接続ピン１０９を支点とし
て第１把持部９４が上方に回動し、第２把持部９５が枢
支ピン１０７を支点として下方に回動し、第１把持部９
４と第２把持部９５が開くようになっている。逆に、可
動ハンドル９９をｂ方向に回動すると、駆動軸１０５が
後退する。この駆動軸１０５の後退時には接続ピン１０
９を支点として第１把持部９４が下方に回動し、第２把
持部９５が枢支ピン１０７を支点として上方に回動し、
第１把持部９４と第２把持部９５が閉じるようになって
いる。Therefore, the movable handle 99 is fixed to the position shown in FIG.
When it is rotated in the a direction, the drive shaft 105 moves forward. When the drive shaft 105 moves forward, the first grip portion 94 rotates upward with the connection pin 109 as a fulcrum, and the second grip portion 95 rotates downward with the pivot pin 107 as a fulcrum.
4 and the second grip 95 are opened. Conversely, when the movable handle 99 is rotated in the b direction, the drive shaft 105 retracts. When the drive shaft 105 is retracted, the connecting pin 10
9, the first grip portion 94 rotates downward, the second grip portion 95 rotates upward with the pivot pin 107 as a fulcrum,
The first grip portion 94 and the second grip portion 95 are adapted to be closed.

【００９０】また、第１把持部９４と第２把持部９５の
構造は第４の実施の形態（図９乃至図１２参照）と同様
である。すなわち、図１４（Ｂ）に示すように第１把持
部９４の内部には第１の実施の形態における処置具２の
加熱処置ユニット１４と略同様の構成の加熱処置ユニッ
ト１１０が装着されている。この加熱処置ユニット１１
０には略Ｕ字状の断面形状の断熱枠体１１１が設けられ
ている。この断熱枠体１１１には伝熱板１１２の上部が
固定されている。この伝熱板１１２の上部には発熱手段
１１３が固定されている。そして、断熱枠体１１１によ
って発熱手段１１３の熱が第１把持部９４側に放熱され
ることを防いでいる。なお、断熱枠体１１１は、伝熱板
１１２を介して発熱手段１１３を間接的に保持するよう
構成されている。The structures of the first grip portion 94 and the second grip portion 95 are similar to those of the fourth embodiment (see FIGS. 9 to 12). That is, as shown in FIG. 14B, a heat treatment unit 110 having substantially the same configuration as the heat treatment unit 14 of the treatment instrument 2 according to the first embodiment is mounted inside the first grip portion 94. . This heat treatment unit 11
At 0, a heat insulating frame 111 having a substantially U-shaped cross section is provided. The upper part of the heat transfer plate 112 is fixed to the heat insulating frame 111. The heat generating means 113 is fixed to the upper part of the heat transfer plate 112. The heat insulating frame 111 prevents the heat of the heat generating means 113 from being radiated to the first gripping portion 94 side. The heat insulating frame 111 is configured to indirectly hold the heat generating means 113 via the heat transfer plate 112.

【００９１】また、第１把持部９４の内底部には断熱用
の空気層を設けるための２つの溝部１１４が第１把持部
９４の軸方向に沿って延設されている。さらに、伝熱板
１１２の下側の刃部１１５の少なくとも刃先部には、外
周に非粘着性を持たせるため、テフロン（登録商標）等
のコーティング部１１６が形成されている。なお、溝部
１１４は、２つの溝に限定されるものではなく、断熱、
もしくは、断熱枠体１１１から第１把持部９４への熱伝
達を低減するという目的を達成できる構成であれば、１
つ、もしくは、３つ以上の溝により構成されても構わな
い。Further, in the inner bottom portion of the first grip portion 94, two groove portions 114 for providing an air layer for heat insulation are provided along the axial direction of the first grip portion 94. Further, at least the blade edge portion of the lower blade portion 115 of the heat transfer plate 112 is provided with a coating portion 116 of Teflon (registered trademark) or the like in order to provide the outer periphery with non-adhesiveness. The groove 114 is not limited to the two grooves, and heat insulation,
Alternatively, if the configuration can achieve the purpose of reducing heat transfer from the heat insulating frame 111 to the first grip portion 94,
It may be constituted by one or three or more grooves.

【００９２】また、第２把持部９５には、第１把持部９
４との対向面に例えばフッ素樹脂やシリコーンなどの柔
軟で、熱を伝えにくい材料からなる平板状の受け部１１
７が設けられている。これにより、第１把持部９４と第
２把持部９５とを閉じたとき、伝熱板１１２の刃部１１
５全体がこの受け部１１７に接触する状態で受けるよう
になっている。そして、第１把持部９４と第２把持部９
５とを閉じた状態で、第１把持部９４と第２把持部９５
との間に生体組織を挟み込んで凝固や切開を行なうよう
になっている。The second grip 95 has a first grip 9
4 is a flat plate-shaped receiving portion 11 made of a material such as fluororesin or silicone that is flexible and does not easily transmit heat on the surface facing 4
7 is provided. Thereby, when the first grip portion 94 and the second grip portion 95 are closed, the blade portion 11 of the heat transfer plate 112 is formed.
The whole 5 is received in a state of being in contact with the receiving portion 117. Then, the first grip portion 94 and the second grip portion 9
In the state in which 5 and 5 are closed, the first grip portion 94 and the second grip portion 95 are
The living tissue is sandwiched between and to perform coagulation or incision.

【００９３】また、第１把持部９４と断熱枠体１１１の
両側面には下面を斜め上方に削った傾斜面１１８，１１
９がそれぞれ形成されている。ここで、断熱枠体１１１
の傾斜面１１９と伝熱板１１２の刃部１１５の中心線と
のなす角αは９０°よりも大きい鈍角に設定されてい
る。同様に、第１把持部９４の傾斜面１１８と伝熱板１
１２の刃部１１５の中心線とのなす角αも９０°よりも
大きい鈍角に設定されている。これにより、伝熱板１１
２の刃部１１５の露出分を増加させるとともに、第１把
持部９４の刃部１１５と第２把持部９５との間で生体組
織を把持した際に第１把持部９４の傾斜面１１８と断熱
枠体１１１の傾斜面１１９とによって処置部の両側面に
生体組織が接触することを防止する逃げ部（接触防止
部）１２０が形成されている。Further, on both side surfaces of the first grip portion 94 and the heat insulating frame body 111, inclined surfaces 118 and 11 are formed by cutting the lower surface obliquely upward.
9 are formed respectively. Here, the heat insulating frame 111
The angle α between the inclined surface 119 and the center line of the blade 115 of the heat transfer plate 112 is set to an obtuse angle larger than 90 °. Similarly, the inclined surface 118 of the first grip portion 94 and the heat transfer plate 1
The angle α formed by the center line of the 12 blades 115 is also set to an obtuse angle larger than 90 °. Thereby, the heat transfer plate 11
The exposed amount of the second blade 115 is increased, and when the living tissue is gripped between the blade 115 of the first grip 94 and the second grip 95, heat insulation with the inclined surface 118 of the first grip 94 is performed. The inclined surface 119 of the frame body 111 forms an escape portion (contact prevention portion) 120 that prevents the living tissue from coming into contact with both side surfaces of the treatment portion.

【００９４】さらに、伝熱板１１２の上部を覆う断熱枠
体１１１の先端部位置は、伝熱板１１２の先端部位置よ
りも前方に突出する位置まで延設されている。同様に、
断熱枠体１１１の後端部位置は、伝熱板１１２の後端位
置より更に後方まで伸びて、伝熱板１１２の後端を覆っ
ている。Further, the position of the front end of the heat insulating frame 111 that covers the upper portion of the heat transfer plate 112 is extended to a position that projects further forward than the position of the front end of the heat transfer plate 112. Similarly,
The rear end position of the heat insulating frame 111 extends further rearward than the rear end position of the heat transfer plate 112 to cover the rear end of the heat transfer plate 112.

【００９５】また、断熱枠体１１１の下端部は第１把持
部９４の傾斜面１１７の下端部よりも下方に突出され、
第１把持部９４の傾斜面１１８の下端部と、断熱枠体１
１１の傾斜面１１９の上端部との間には適宜の長さｔの
段差部１２１が形成されている。これにより、第１把持
部９４の刃部１１５と第２把持部９５との間で生体組織
Ｈを把持した際に生体組織Ｈが第１把持部９４に当接す
る前に断熱枠体１１１を生体組織Ｈに接触させることに
より、生体組織Ｈに第１把持部９４が当接して熱が逃げ
ることを防止するようになっている。Further, the lower end portion of the heat insulating frame 111 is projected below the lower end portion of the inclined surface 117 of the first grip portion 94,
The lower end of the inclined surface 118 of the first grip portion 94 and the heat insulating frame 1
A step portion 121 having an appropriate length t is formed between the upper end portion of the inclined surface 119 of FIG. Accordingly, when the living tissue H is gripped between the blade portion 115 of the first grip portion 94 and the second grip portion 95, the heat insulating frame body 111 is attached to the living body before the living tissue H contacts the first grip portion 94. By contacting the tissue H, the first grip portion 94 contacts the living tissue H and prevents heat from escaping.

【００９６】また、本実施の形態では、第１把持部９４
の先端部に先方に延出された延出部１２２が形成されて
いる。この延出部１２２には、先端側に向かうにしたが
って細くなる先細り部１２３が形成されている。同様
に、第２把持部９５には第１把持部９４の延出部１２２
と対応する形状の延出部１２４が形成されている。この
延出部１２４にも、先端側に向かうにしたがって細くな
る先細り部１２５が形成されている。Further, in the present embodiment, the first grip portion 94
An extending portion 122 extending forward is formed at the tip of the. The extending portion 122 is formed with a tapered portion 123 that becomes thinner toward the tip side. Similarly, the second grip 95 has an extension 122 of the first grip 94.
An extending portion 124 having a shape corresponding to is formed. The extending portion 124 is also formed with a tapered portion 125 that becomes thinner toward the front end side.

【００９７】さらに、第１把持部９４および第２把持部
９５には図１４（Ｂ）に示すように第１把持部９４と第
２把持部９５とを閉じた際に、第１把持部９４の延出部
１２２と第２把持部９５の延出部１２４との対向面間に
隙間Ｓが生じるように設定されている。Further, as shown in FIG. 14B, when the first grip portion 94 and the second grip portion 95 are closed, the first grip portion 94 and the second grip portion 95 are closed. It is set so that a gap S is formed between the facing surfaces of the extending portion 122 and the extending portion 124 of the second grip portion 95.

【００９８】また、操作部本体９６にはコネクタ接続部
１２６が設けられている。このコネクタ接続部１２６に
は第１の実施の形態と同様に電源装置３（図１参照）か
ら伸びるケーブル１１（図１参照）の先端部のコネクタ
１２（図１参照）が着脱可能に接続されている。このコ
ネクタ接続部１２６にはチャンネルパイプ１０２の内部
に挿通された同軸ケーブル１２７の一端部が接続されて
いる。この同軸ケーブル１２７の他端部は第１把持部９
４の加熱処置ユニット１１０の発熱手段１１３に接続さ
れている。Further, the operation section main body 96 is provided with a connector connecting section 126. Similar to the first embodiment, the connector 12 (see FIG. 1) at the tip of the cable 11 (see FIG. 1) extending from the power supply device 3 (see FIG. 1) is detachably connected to the connector connecting portion 126. ing. One end of a coaxial cable 127 inserted through the inside of the channel pipe 102 is connected to the connector connecting portion 126. The other end of the coaxial cable 127 has the first grip 9
4 is connected to the heat generating means 113 of the heat treatment unit 110.

【００９９】次に、上記構成の本実施の形態の作用につ
いて説明する。本実施の形態の処置具９１では手元操作
部９３の可動ハンドル９９を操作することにより、第１
把持部９４と第２把持部９５を開閉して生体組織を把持
する。さらに、第１把持部９４と第２把持部９５との間
で生体組織を把持した状態で、加熱処置ユニット１１０
の発熱手段１１３に通電することにより、加熱処置ユニ
ット１１０の各発熱手段１１３が通電加熱されて発熱さ
れる。そのため、第１把持部９４と第２把持部９５との
間で伝熱板１１２の刃部１１５に圧接されている生体組
織はこの刃部１１５の熱によって加熱され、生体組織の
凝固や切開が効率良く行なわれる。Next, the operation of this embodiment having the above configuration will be described. With the treatment instrument 91 of the present embodiment, the first handle is operated by operating the movable handle 99 of the hand-held operating portion 93.
The grasping portion 94 and the second grasping portion 95 are opened and closed to grasp the living tissue. Further, in a state where the living tissue is grasped between the first grasping portion 94 and the second grasping portion 95, the heat treatment unit 110
By energizing the heat generating means 113, each heat generating means 113 of the heat treatment unit 110 is electrically heated to generate heat. Therefore, the living tissue pressed against the blade portion 115 of the heat transfer plate 112 between the first grip portion 94 and the second grip portion 95 is heated by the heat of the blade portion 115, and the living tissue is coagulated or incised. It is done efficiently.

【０１００】そこで、上記構成のものにあっては次の効
果を奏する。すなわち、本実施の形態の処置具９１では
略Ｕ字型の断熱枠体１１１により伝熱板１１２の刃部１
１５より上側の部分と発熱手段１１３を覆っている。そ
のため、発熱手段１１３（熱源部）で発生した熱が、断
熱枠体（保持手段）１１１より熱伝導率の高い伝熱板１
１２（処置部）に集中的に効率よく伝達し、ジョー側に
伝達され難いようにできる。医療機器の使用時に発熱手
段１１３の熱が発熱手段１１３と伝熱板１１２との接触
部以外の方向、例えば伝熱板１１２の左右方向や上方へ
逃げることを防ぐことができるので、熱源部である熱発
生素子などの発熱手段１１２の熱を伝熱板１１２側に集
中的に効率よく伝達することができる。その結果、本実
施の形態でも第１の実施の形態と同様に伝熱板１１２の
熱が第１把持部９４側に伝熱されることを防ぐことがで
きるので、生体組織に接触する伝熱板１１２の温度が迅
速に上昇しなかったり、温度ムラが生じ、医療機器によ
る凝固能や、切開能の劣化が生じることを防止すること
ができる。したがって、伝熱板１１２の刃部１１５と把
持部９５の受け部１１７とで生体組織を十分圧縮できる
ため、確実な凝固切開を行うことができ、術者の所望ど
おりの処置が可能である。Therefore, the following effects can be obtained with the above structure. That is, in the treatment tool 91 of the present embodiment, the blade portion 1 of the heat transfer plate 112 is formed by the substantially U-shaped heat insulating frame 111.
The portion above 15 and the heat generating means 113 are covered. Therefore, the heat generated by the heat generating means 113 (heat source portion) has a higher heat conductivity than the heat insulating frame (holding means) 111.
12 (treatment portion) can be efficiently transmitted in a concentrated manner so that it is difficult to be transmitted to the jaw side. Since it is possible to prevent heat of the heat generating means 113 from escaping in a direction other than the contact portion between the heat generating means 113 and the heat transfer plate 112, for example, in the left-right direction or above the heat transfer plate 112 when using the medical device, It is possible to efficiently and intensively transfer the heat of the heat generating means 112 such as a heat generating element to the heat transfer plate 112 side. As a result, also in the present embodiment, it is possible to prevent the heat of the heat transfer plate 112 from being transferred to the first grip portion 94 side as in the case of the first embodiment. It is possible to prevent the temperature of 112 from not rising rapidly or the occurrence of temperature unevenness, resulting in deterioration of coagulation ability and incision ability due to medical equipment. Therefore, since the living tissue can be sufficiently compressed by the blade portion 115 of the heat transfer plate 112 and the receiving portion 117 of the grip portion 95, reliable coagulation and incision can be performed, and the operator's desired treatment can be performed.

【０１０１】さらに、本実施の形態では金属材料製の第
１把持部９４および断熱枠体１１１の両側面に下面を斜
め上方に削った傾斜面１１８，１１９をそれぞれ形成す
ることにより、伝熱板１１２の刃部１１５の露出面積が
大きくなる。そのため、伝熱板１１２の刃部１１５と生
体組織Ｈとの接触面積が広がり、確実な凝固が可能であ
る。これにより、把持部９４の高さを高くしなくとも、
伝熱板１１２の刃部１１５の露出部の面積を十分な凝固
能力を得られる程度に確保できる。Further, in the present embodiment, the heat transfer plate is formed by forming the inclined surfaces 118 and 119 on the both sides of the first grip portion 94 and the heat insulating frame body 111, which are made of a metal material, and whose lower surfaces are cut obliquely upward. The exposed area of the blade 115 of 112 is increased. Therefore, the contact area between the blade portion 115 of the heat transfer plate 112 and the living tissue H is expanded, and reliable solidification is possible. Accordingly, even if the height of the grip portion 94 is not increased,
The area of the exposed portion of the blade 115 of the heat transfer plate 112 can be secured to such an extent that a sufficient solidification ability can be obtained.

【０１０２】さらに、断熱枠体１１１の傾斜面１１８と
伝熱板１１２の刃部１１５の中心線とのなす角αは９０
°よりも大きい鈍角に設定され、同様に、第１把持部９
４の傾斜面１１８と伝熱板１１２の刃部１１５の中心線
とのなす角αも９０°よりも大きい鈍角に設定されて逃
げ部１２０が形成されている。これにより、第１把持部
９４の刃部１１５と第２把持部９５とを閉じた際に第１
把持部９４の傾斜面１１８と断熱枠体１１１の傾斜面１
１９との逃げ部１２０により、処置部の両側面に生体組
織Ｈが接触することを防止することができる。そのた
め、第１把持部９４の刃部１１５と第２把持部９５との
間で生体組織Ｈを把持した際に第１把持部９４の刃部１
１５に生体組織Ｈを押圧する圧力を集中させることがで
きるので、第１把持部９４の刃部１１５を生体組織Ｈに
密着させて十分に圧縮させることができる。その結果、
生体組織Ｈの凝固力が高く、更に凝固と同時に切開も可
能である。Further, the angle α formed between the inclined surface 118 of the heat insulating frame 111 and the center line of the blade 115 of the heat transfer plate 112 is 90.
Is set to an obtuse angle larger than °, and similarly, the first gripping portion 9
The angle α between the inclined surface 118 of No. 4 and the center line of the blade portion 115 of the heat transfer plate 112 is also set to an obtuse angle larger than 90 ° to form the escape portion 120. Thereby, when the blade portion 115 of the first grip portion 94 and the second grip portion 95 are closed, the first grip portion 94
The inclined surface 118 of the grip portion 94 and the inclined surface 1 of the heat insulating frame 111
The escape portion 120 with respect to 19 can prevent the living tissue H from contacting both side surfaces of the treatment portion. Therefore, when the living tissue H is grasped between the blade portion 115 of the first grasping portion 94 and the second grasping portion 95, the blade portion 1 of the first grasping portion 94.
Since the pressure for pressing the living tissue H can be concentrated on 15, the blade portion 115 of the first grip portion 94 can be brought into close contact with the living tissue H and sufficiently compressed. as a result,
The coagulation force of the biological tissue H is high, and further incision can be performed simultaneously with coagulation.

【０１０３】また、断熱枠体１１１は非粘着性の材質で
できており、第１把持部９４より下に突出しているの
で、第１把持部９４、断熱枠体１１１に生体組織Ｈが貼
り付かない効果がある。Since the heat insulating frame 111 is made of a non-adhesive material and protrudes below the first grip portion 94, the living tissue H is attached to the first grip portion 94 and the heat insulating frame body 111. There is an effect that does not occur.

【０１０４】さらに、本実施の形態では断熱枠体１１１
の下端部を第１把持部９４の下端部よりも下方に突出さ
せ、第１把持部９４の下端部と、断熱枠体１１１の傾斜
面１１９の上端部との間に適宜の長さｔの段差部１２１
を形成している。そのため、第１把持部９４と、第２把
持部９５とを閉じた際に、生体組織Ｈが断熱枠体１１１
に当接した場合であっても生体組織Ｈにおける断熱枠体
１１１との当接部が第１把持部９４の下面に接触するこ
とを確実に防止することができる。Furthermore, in this embodiment, the heat insulating frame 111 is used.
The lower end of the first gripping portion 94 below the lower end of the first gripping portion 94, and an appropriate length t between the lower end of the first gripping portion 94 and the upper end of the inclined surface 119 of the heat insulating frame 111. Step 121
Is formed. Therefore, when the first gripping portion 94 and the second gripping portion 95 are closed, the living tissue H is heated by the heat insulating frame 111.
It is possible to reliably prevent the contact portion of the living tissue H with the heat insulating frame 111 from coming into contact with the lower surface of the first gripping portion 94 even when it comes into contact with.

【０１０５】また、第１把持部９４および第２把持部９
５の先端部に先端側に向かうにしたがって細くなる先細
り部１２２、１２４を形成したので、第１把持部９４お
よび第２把持部９５の先端部を細径化できる。Further, the first grip portion 94 and the second grip portion 9
Since the tapered portions 122 and 124 are formed at the tip of the No. 5 taper toward the tip, the tip of the first grip portion 94 and the second grip portion 95 can be made thinner.

【０１０６】さらに、第１把持部９４および第２把持部
９５は両者間を閉じた際に、第１把持部９４の延出部１
２２と第２把持部９５の延出部１２４の対向面間に隙間
Ｓが生じるように設定されている。これにより、第１把
持部９４と第２把持部９５とを閉じた際に、第１把持部
９４の刃部１１５と第２把持部９５の受け部１１７とを
接触させ、第１把持部９４の延出部１２２と第２把持部
９５の延出部１２４の対向面間は接触しない構造になっ
ているので、凝固・切開時に伝熱板１１２の刃部１１５
と、受け部１１７との間で把持された生体組織Ｈに圧縮
力を集中させることができる。Furthermore, when the first grip portion 94 and the second grip portion 95 are closed, the extension portion 1 of the first grip portion 94 is closed.
It is set so that a gap S is formed between the facing surface of the extension portion 124 of the second grip portion 95 and the second portion 22. With this, when the first grip portion 94 and the second grip portion 95 are closed, the blade portion 115 of the first grip portion 94 and the receiving portion 117 of the second grip portion 95 are brought into contact with each other, and the first grip portion 94. Since the extending portion 122 of the second gripping portion 95 and the extending portion 124 of the second grip portion 95 are not in contact with each other between the facing surfaces, the blade portion 115 of the heat transfer plate 112 during solidification and incision.
Then, the compressive force can be concentrated on the living tissue H grasped between the receiving portion 117.

【０１０７】さらに、伝熱板１１２は熱伝導率の高い材
質でできているため、発熱手段１１３の熱をこの発熱手
段１１３の取付け位置よりも前方に延設された前方延設
部に伝熱することにより、第１把持部９４の前端部に格
別に発熱手段１１３を取付けることなく第１把持部９４
の前端部を効率よく加熱することができる。その結果、
第１把持部９４の前端部に発熱手段１１３を取付ける場
合に比べて第１把持部９４の前端部の高さを抑え、先細
化することができる。したがって、第１把持部９４の延
出部１２２と第２把持部９５の延出部１２４の先細り部
１２３，１２５によって生体組織Ｈの剥離操作などを行
なうことができる。Further, since the heat transfer plate 112 is made of a material having a high thermal conductivity, the heat of the heat generating means 113 is transferred to the front extension portion extending forward from the mounting position of the heat generating means 113. By doing so, the first gripping portion 94 can be provided without attaching the heat generating means 113 to the front end portion of the first gripping portion 94.
The front end portion of can be efficiently heated. as a result,
It is possible to suppress the height of the front end portion of the first grip portion 94 and taper it as compared with the case where the heat generating means 113 is attached to the front end portion of the first grip portion 94. Therefore, the extending portion 122 of the first grasping portion 94 and the tapered portions 123 and 125 of the extending portion 124 of the second grasping portion 95 can perform the peeling operation of the living tissue H or the like.

【０１０８】また、図１５（Ａ），（Ｂ）は本発明の第
６の実施の形態を示すものである。本実施の形態は第１
の実施の形態（図１乃至図４参照）の処置具２における
第１把持部７の内部構成を次の通り変更したものであ
る。Further, FIGS. 15A and 15B show a sixth embodiment of the present invention. This embodiment is the first
The internal configuration of the first grip portion 7 in the treatment tool 2 according to the embodiment (see FIGS. 1 to 4) is changed as follows.

【０１０９】すなわち、本実施の形態では第１把持部７
の内部の処置部１６は図１５（Ａ）に示すように先端の
低い略三角形の平板状のベース１３１の表面上に薄膜抵
抗半導体にて形成された発熱部１３２と、外部から電流
を受け取る電極１３３と、発熱部１３２と電極１３３と
を結ぶリード部１３４などを一体的に形成した１つの素
子１３５として形成されている。That is, in the present embodiment, the first grip portion 7
As shown in FIG. 15 (A), the treatment section 16 inside is a heat generating section 132 formed of a thin film resistance semiconductor on the surface of a flat triangular base 131 having a low tip, and an electrode receiving an electric current from the outside. 133, and a lead portion 134 connecting the heat generating portion 132 and the electrode 133 are integrally formed as one element 135.

【０１１０】この素子１３５のベース１３１を構成する
平板は、例えば銅、銅合金、アルミ合金、タングステン
あるいはモリブデン等の熱を伝え易い材料によって形成
されている。そして、発熱部１３２で発生する熱によ
り、素子１３５全体が加熱されるようになっている。The flat plate constituting the base 131 of the element 135 is made of a material which easily conducts heat, such as copper, copper alloy, aluminum alloy, tungsten or molybdenum. The entire element 135 is heated by the heat generated in the heat generating section 132.

【０１１１】また、図１５（Ｂ）に示すように、素子１
３５の下側稜線１３６は、断面が、先細りテーパ形状と
なっている。そして、この素子１３５は図１５（Ｂ）中
で上側の平板部分が断熱枠体１８の保持枠１９の枠内の
溝状の収容空間１９ａ内に収容され、保持枠１９の断熱
枠体１８で覆われるように取り囲まれて固定されてい
る。さらに、この素子１３５の下側稜線１３６の先細り
テーパ形状部分は保持枠１９の枠外に露出された状態で
保持され、下側稜線１３６が生体組織との接触が可能に
なっている。なお、この素子１３５は、生体組織や血液
が付着するのを防ぐために、電極１３３を除く外表面全
体にテフロン（登録商標）なとの薄い皮膜が被覆されて
いる。In addition, as shown in FIG.
The lower ridgeline 136 of 35 has a tapered cross section. 15B, the upper flat plate portion of the element 135 is housed in the groove-shaped housing space 19a in the frame of the holding frame 19 of the heat insulating frame 18, and the heat insulating frame 18 of the holding frame 19 is used. It is surrounded and fixed so as to be covered. Further, the taper-tapered portion of the lower ridge line 136 of the element 135 is held in an exposed state outside the frame of the holding frame 19, and the lower ridge line 136 can be brought into contact with living tissue. The element 135 is covered with a thin film such as Teflon (registered trademark) on the entire outer surface except the electrode 133 in order to prevent adhesion of living tissue and blood.

【０１１２】次に、上記構成の本実施の形態の作用につ
いて説明する。本実施の形態の処置具２の使用時には素
子１３５上の発熱部１３２が熱を発生すると素子１３５
全体が熱くなる。そして、第１把持部７と第２把持部８
との間を閉じて第１把持部７と第２把持部８との間に生
体組織Ｈを挟み込む際に、第１把持部７の素子１３５の
下側稜線１３６を生体組織Ｈに接触させることで、生体
組織Ｈの加熱凝固、切開などの処置が出来る。Next, the operation of the present embodiment having the above configuration will be described. When the heat generating portion 132 on the element 135 generates heat when the treatment device 2 of the present embodiment is used, the element 135
The whole thing gets hot. Then, the first grip 7 and the second grip 8
When the living tissue H is sandwiched between the first grip portion 7 and the second grip portion 8 by closing the space between and, the lower ridge line 136 of the element 135 of the first grip portion 7 is brought into contact with the living tissue H. Thus, treatment such as heat coagulation and incision of the living tissue H can be performed.

【０１１３】そこで、上記構成のものにあっては次の効
果を奏する。すなわち、本実施の形態では発熱部１３２
と下側稜線１３６を有する一つの素子１３５で電流を流
し、発熱し、生体組織Ｈを処置するという一連の機能を
実現できる。そのため、第１把持部７の内部の処置部１
６の構成部品数が減るので、組立も簡単になり、品質が
安定する上にコスト低減も可能になる。また、第１把持
部７の内部の処置部１６の構成部品が少ないので、故障
が発生する頻度を低くすることができる効果もある。Therefore, the following effects can be obtained with the above structure. That is, in the present embodiment, the heat generating portion 132
With a single element 135 having the lower ridge line 136, a series of functions of supplying current, generating heat, and treating the living tissue H can be realized. Therefore, the treatment portion 1 inside the first grip portion 7
Since the number of component parts of 6 is reduced, the assembly is simplified, the quality is stabilized, and the cost can be reduced. Moreover, since the number of components of the treatment portion 16 inside the first grip portion 7 is small, there is an effect that the frequency of occurrence of failure can be reduced.

【０１１４】さらに、本発明は上記実施の形態に限定さ
れるものではなく、本発明の要旨を逸脱しない範囲で種
々変形実施できることは勿論である。次に、本出願の他
の特徴的な技術事項を下記の通り付記する。 記 （付記項１） 生体組織の凝固、切開などの処置を行な
う医療機器において、お互いに開閉する一対のジョー
と、ジョーを開閉するための操作部と、ジョーと操作部
の間に設けられた連結部と、少なくとも一方のジョーの
中に設けられた発熱部と、組織に接触する刃部と、発熱
部にエネルギーを供給する手段と、発熱部とジョーの間
に設けられ発熱部と刃部の少なくとも一部を取り囲む断
熱層と、から構成されることを特徴とする医療機器。Furthermore, the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention. Next, other characteristic technical matters of the present application will be additionally described as follows. Note (Additional Item 1) In a medical device that performs treatment such as coagulation and incision of living tissue, a pair of jaws that are opened and closed with each other, an operation unit for opening and closing the jaws, and a device provided between the jaw and the operation unit are provided. A connecting part, a heat generating part provided in at least one of the jaws, a blade part in contact with tissue, a means for supplying energy to the heat generating part, a heat generating part and a blade part provided between the heat generating part and the jaws. And a heat insulating layer surrounding at least a part of the medical device.

【０１１５】（付記項２） 生体組織の凝固、切開など
の処置を行なう医療機器において、お互いに開閉する一
対のジョーと、ジョーを開閉するための操作部と、ジョ
ーと操作部の間に設けられた連結部と、少なくとも一方
のジョーの中に設けられた発熱部と、組織に接触する刃
部と、発熱部にエネルギーを供給する手段と、発熱部と
ジョーの間に設けられ少なくとも発熱部を覆う剛性のあ
る枠と、から構成されることを特徴とする医療機器。(Additional Item 2) In a medical device for performing treatment such as coagulation and incision of living tissue, a pair of jaws that are opened and closed with each other, an operating portion for opening and closing the jaws, and a portion provided between the jaws and the operating portion. Connection part, a heat generating part provided in at least one of the jaws, a blade part in contact with tissue, a means for supplying energy to the heat generating part, and at least a heat generating part provided between the heat generating part and the jaws. A medical device characterized by comprising a rigid frame that covers the.

【０１１６】（付記項３） 生体組織の凝固、切開など
の処置を行なう医療機器において、お互いに開閉する一
対のジョーと、ジョーを開閉するための操作部と、ジョ
ーと操作部の間に設けられた連結部と、少なくとも一方
のジョーの中に設けられた発熱部と、組織に接触する刃
部と、発熱部にエネルギーを供給する手段と、発熱部と
ジョーの間に設けられ少なくとも発熱部を覆う枠と、発
熱部または刃部と枠とを緩く固定する少なくとも１つの
ピンと、から構成されることを特徴とする医療機器。(Additional Item 3) In a medical device for performing treatment such as coagulation and incision of living tissue, a pair of jaws which are opened and closed with each other, an operating portion for opening and closing the jaws, and a portion provided between the jaws and the operating portion. Connection part, a heat generating part provided in at least one of the jaws, a blade part in contact with tissue, a means for supplying energy to the heat generating part, and at least a heat generating part provided between the heat generating part and the jaws. A medical device comprising: a frame that covers the heat generating portion or the blade portion and at least one pin that loosely fixes the frame.

【０１１７】（付記項４） 操作部の操作に応じて開閉
し、生体組織を把持する第１、第２の把持部を有する処
置具において、第１の把持部はジョー、ジョー内部に収
納された発熱部と組織に接触する刃部と、発熱部にエネ
ルギーを供給する手段を有し、発熱部とジョーの間に設
けられ発熱部と刃部の少なくとも一部を取り囲む断熱層
から構成される医療機器において刃部の長手方向に対し
て垂直上方に、刃部の露出部を増やすためにジョーと断
熱層の側面に逃げ部を設けたことを特徴とする医療用処
置具。(Supplementary Note 4) In a treatment instrument having first and second grasping portions for opening and closing according to the operation of the operating portion to grasp the living tissue, the first grasping portion is housed in the jaw and inside the jaw. A heat-generating part and a blade part that comes into contact with tissue; and a heat-insulating layer having a means for supplying energy to the heat-generating part and provided between the heat-generating part and the jaw and surrounding at least a part of the heat-generating part and the blade part. A medical treatment instrument characterized in that a relief portion is provided on a side surface of a jaw and a heat insulating layer to increase an exposed portion of the blade portion in a vertical direction in a longitudinal direction of the blade portion in the medical device.

【０１１８】（付記項５） 操作部の操作に応じて開閉
し、生体組織を把持する第１、第２の把持部を有する処
置具において、第１の把持部はジョー、発熱体、発熱体
を発熱させるためのエネルギー供給手段、刃部を有し、
ジョーを刃部の先方に延長し、先細りに形成したことを
特徴とする医療用処置具。(Supplementary Note 5) In a treatment instrument having first and second grips for opening and closing according to the operation of the operation part to grip a biological tissue, the first grip is a jaw, a heating element, a heating element. Has an energy supply means for heating the
A medical treatment tool characterized in that a jaw is extended toward the tip of a blade portion to be tapered.

【０１１９】（付記項６） 付記項５の手術機器におい
て、前記把持部を閉じた際、前記延長部の間に隙間が生
じることを特徴とする医療用処置具。(Additional Item 6) In the surgical instrument according to Additional Item 5, a medical treatment instrument characterized in that when the grip portion is closed, a gap is formed between the extension portions.

【０１２０】（付記項７） 操作部の操作に応じて開閉
し、生体組織を把持する第１、第２の把持部を有する処
置具において、第１の把持部はジョー、ジョー内部に収
納された発熱部と組織に接触する刃部と、発熱部にエネ
ルギーを供給する手段を有し、発熱部とジョーの間に設
けられ発熱部と刃部の少なくとも一部を取り囲む断熱層
から構成される医療機器においてジョーの内側に溝を設
けたことを特徴とする、医療用処置具。(Supplementary Note 7) In a treatment instrument having first and second gripping portions for opening and closing according to the operation of the operation portion to grip the living tissue, the first gripping portion is housed in the jaw and inside the jaw. A heat-generating part and a blade part that comes into contact with tissue; and a heat-insulating layer having a means for supplying energy to the heat-generating part and provided between the heat-generating part and the jaw and surrounding at least a part of the heat-generating part and the blade part. A medical treatment tool characterized in that a groove is provided inside a jaw in a medical device.

【０１２１】（付記項８） 操作部の操作に応じて開閉
し、生体組織を把持する第１、第２の把持部を有する処
置具において、第１の把持部はジョー、ジョー内部に収
納された発熱部と組織に接触する刃部と、発熱部にエネ
ルギーを供給する手段を有し、発熱部とジョーの間に設
けられ発熱部と刃部の少なくとも一部を取り囲む断熱層
から構成される医療機器において、刃部の材質を熱伝導
率の高い材料にし、発熱部の位置より先方に刃部を延長
したことを特徴とする、医療用処置具。(Supplementary Note 8) In a treatment instrument having first and second gripping portions that open and close according to the operation of the operating portion to grip a living tissue, the first gripping portion is housed in the jaw and inside the jaw. A heat-generating part and a blade part that comes into contact with tissue; and a heat-insulating layer having a means for supplying energy to the heat-generating part and provided between the heat-generating part and the jaw and surrounding at least a part of the heat-generating part and the blade part. In a medical device, a medical treatment tool, characterized in that a material of a blade portion has a high thermal conductivity, and the blade portion is extended ahead of a position of a heat generating portion.

【０１２２】（付記項１〜３の従来技術） 一般に、生
体組織を把持する一対の把持部を備え、把持部の一方ま
たは両方に発熱体を設け、生体組織を把持した状態で発
熱体を発熱させて生体組織を凝固および凝固部位を切開
するための手術機器が知られている。これらの手術機器
は通常、生体組織に含まれる血管の止血、生体組織の表
層の病変部や出血部の焼灼、凝固そして避妊を目的とし
た卵管の閉塞等、多様な手術症例に用いられ、生体組織
の凝固や凝固した生体組織の切開ができるようになって
いる。(Prior Art of Additional Items 1 to 3) Generally, a pair of grips for gripping a living tissue is provided, and a heating element is provided on one or both of the grips, and the heating element generates heat while gripping the living tissue. There is known a surgical instrument for coagulating biological tissue and incising a coagulation site. These surgical instruments are usually used for various surgical cases such as hemostasis of blood vessels contained in living tissue, cauterization of lesions and bleeding sites on the surface of living tissue, coagulation and oviduct obstruction for the purpose of contraception. Coagulation of living tissue and incision of coagulated living tissue can be performed.

【０１２３】例えば、特開２００１−１９８１３７号公
報や特開２００１−３４０３４９号公報では、一対の把
持部の少なくとも一方にセラミックヒーターなどの熱発
生素子を設けた手術機器が開示されている。For example, Japanese Unexamined Patent Publication No. 2001-198137 and Japanese Unexamined Patent Publication No. 2001-340349 disclose surgical instruments in which a heat generating element such as a ceramic heater is provided on at least one of a pair of gripping portions.

【０１２４】これらの機器では、少なくとも一方の把持
部に熱発生素子を固定してあり、更に、熱発生素子で発
生した熱を収束させて生体組織の凝固や切開を効率良く
行なうために生体組織と接触する部分の幅を狭くした発
熱板を熱発生素子に密着するように取付けられたものも
ある。In these devices, the heat-generating element is fixed to at least one of the grips, and the heat generated by the heat-generating element is converged to efficiently coagulate or incise the living tissue. There is also one in which a heat generating plate having a narrow width in a portion in contact with the heat generating element is attached in close contact with the heat generating element.

【０１２５】（付記項１〜３が解決しようとする課題）
しかし、一対の把持部の間に生体組織を挟んで、熱発
生素子で熱を発生させた場合、一対の把持部を挟む力が
熱発生素子と組織あるいは発熱板とが密着するように作
用すると同時に、熱発生素子が取付けられた把持部と熱
発生素子とが密着するようにも作用してしまうために、
熱発生素子の熱は、発熱板に伝達されると同時に把持部
にも逃げてしまう。このため、熱発生素子の組織に接触
する部分や発熱板の温度が上昇しなかったり、温度ムラ
が生じてしまい、その結果として凝固能や切開能が劣化
してしまう。(Problems to be Solved by Additional Items 1 to 3)
However, when the living tissue is sandwiched between the pair of gripping portions and heat is generated by the heat generating element, the force sandwiching the pair of gripping portions acts so that the heat generating element and the tissue or the heat generating plate come into close contact with each other. At the same time, since the grip portion to which the heat generating element is attached and the heat generating element also come into close contact with each other,
The heat of the heat generating element is transmitted to the heat generating plate and simultaneously escapes to the grip portion. For this reason, the temperature of the portion of the heat generating element that comes into contact with the tissue or the temperature of the heat generating plate does not rise, or temperature unevenness occurs, and as a result, the coagulation ability and the incision ability deteriorate.

【０１２６】また、熱発生素子は裸状態で手術操作に使
えるほど材料の強度や耐性がないので、直接熱発生素子
に外部から力が加わらないように保護する必要がある上
に、発熱時と常温時の温度差が大きいため、温度変化に
ともなう寸法変化（伸び縮み）が大きく、発熱を繰り返
すと把持部への取付けが不完全となったり、熱発生素子
自体も把持部から応力を受けて破損するという不具合が
あった。Further, since the heat generating element is not strong and resistant enough to be used for a surgical operation in a bare state, it is necessary to directly protect the heat generating element from an external force, and at the time of heat generation. Since the temperature difference at room temperature is large, the dimensional change (expansion and contraction) due to temperature change is large, and repeated heat generation causes incomplete attachment to the grip, or the heat-generating element itself receives stress from the grip. There was a problem that it was damaged.

【０１２７】（付記項１〜３の目的） 本発明はこうし
た不具合に着目し、熱発生素子で発生した熱が発熱板に
効率良く伝達されるようにして、良好な凝固能や切開能
が得られる手術機器を提供することを目的とする。(Purposes of Supplementary Items 1 to 3) In the present invention, attention is paid to these problems, and the heat generated in the heat generating element is efficiently transmitted to the heat generating plate to obtain good coagulation ability and incision ability. The purpose of the present invention is to provide a surgical instrument.

【０１２８】本発明は、また、こうした不具合に対して
発熱を繰り返しても、熱発生素子が破損するような応力
が加わらないような、安全で確実な固定構造を提供する
ことを目的としている。Another object of the present invention is to provide a safe and reliable fixing structure in which stress that damages a heat generating element is not applied even if heat is repeatedly generated in response to such a defect.

【０１２９】（付記項１〜３の課題を解決するための手
段および作用） 熱発生素子の生体組織と接触する部分
あるいは発熱板が取付けられる部分以外をテフロンなど
の断熱材で囲い、熱発生素子の熱が把持部に伝わらない
ようにした。(Means and Actions for Solving the Problems in Supplementary Items 1 to 3) The heat generating element is surrounded by a heat insulating material such as Teflon except for a portion of the heat generating element that comes into contact with living tissue or a portion to which the heat generating plate is attached. The heat of was not transmitted to the grip.

【０１３０】熱発生素子の生体組織と接触する部分ある
いは発熱板が取付けられる部分以外を囲うように枠を設
けた。A frame was provided so as to surround the portion other than the portion of the heat generating element that comes into contact with the living tissue or the portion to which the heat generating plate is attached.

【０１３１】熱発生素子と枠とをピンで緩く固定した。The heat generating element and the frame were loosely fixed with pins.

【０１３２】（付記項１〜３の効果） 熱発生素子の生
体組織と接触する部分あるいは発熱板が取付けられる部
分以外をテフロンなどの断熱材で囲い、熱発生素子の熱
が把持部に伝わらないようにしたので、熱発生素子で発
生した熱が発熱板に効率良く伝達されるようになり、良
好な凝固能や切開能が得られるようになった。(Effects of Additional Items 1 to 3) The heat generating element is surrounded by a heat insulating material such as Teflon other than the portion in contact with the living tissue or the portion to which the heat generating plate is attached, so that the heat of the heat generating element is not transmitted to the grip portion. As a result, the heat generated by the heat generating element can be efficiently transmitted to the heating plate, and good coagulation ability and incision ability can be obtained.

【０１３３】熱発生素子の生体組織と接触する部分ある
いは発熱板が取付けられる部分以外を囲うように枠を設
けたので、発熱を繰り返すと把持部への取付けが不完全
となったり、把持部から応力を受けて熱発生素子自体が
破損するということなくなった。Since the frame is provided so as to surround the portion of the heat generating element other than the portion in contact with the living tissue or the portion to which the heat generating plate is attached, repeated heat generation causes incomplete attachment to the holding portion, The heat generating element itself is no longer damaged by the stress.

【０１３４】熱発生素子と枠とをピンで緩く固定したの
で、熱発生素子が破損するような応力が加わらないよう
に安全で確実に固定できるようになった。Since the heat-generating element and the frame are loosely fixed with the pins, it is possible to securely and reliably fix the heat-generating element so that no stress that would damage the heat-generating element is applied.

【０１３５】（付記項４〜８の従来技術） 一般に、生
体組織を把持する一対の把持部を備え、把持部の一方又
は両方に発熱体を設け、生体組織を把持した状態で発熱
体を発熱させて生体組織を凝固及び凝固部位を切開する
医療用処置具が知られている。この種の医療用処置具
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
閉塞等の多種症例に用いられ、患者の処置対象の生体組
織を凝固または切開することができるようになってい
る。(Prior Art of Additional Items 4 to 8) Generally, a pair of grips for gripping a living tissue is provided, and one or both of the grips is provided with a heating element, and the heating element generates heat while gripping the living tissue. There is known a medical treatment tool that coagulates biological tissue and incises the coagulation site. This type of medical treatment device is usually used for various cases such as hemostasis of blood vessels contained in living tissue, lesions on the surface layer of living tissue, cauterization of bleeding points, occlusion of fallopian tubes for the purpose of contraception, etc. The living tissue to be treated by the patient can be coagulated or incised.

【０１３６】例えば、特開２００１−１９８１３７号公
報は刃部の上部に発熱体を設け、発熱部体をジョーで覆
っている構造である。また、ブレードがジョーの先端部
まである構造である。For example, Japanese Unexamined Patent Publication No. 2001-198137 has a structure in which a heating element is provided on the upper part of the blade and the heating element is covered with a jaw. In addition, the blade has a structure that extends to the tip of the jaw.

【０１３７】（付記項４〜８が解決しようとする課題）
特開２００１−１９８１３７号公報は発熱体と把持部
が接触しているため、把持部（ジョー）が発熱体からの
伝熱により高温となり、凝固能または切開能が低下し、
術者の望む処置が行えなかった。この伝熱を抑制するた
めに、ジョーと発熱体の間に断熱層を設けるために、空
気層を設けると、ブレードの機械的強度が落ちるので、
空気層の代わりに熱伝導率の低い材料でできた、断熱部
材を設けることが考えられている。しかし、この断熱部
材を金属枠に単純に積層した場合、ブレードの露出部分
が減少し、生体組織に十分な熱量が伝わらなくなり、十
分な凝固能力が得られなくなる。また、ジョーと断熱部
材に生体組織が接触することにより、ブレードと把持部
の当接面とで検体組織を十分圧縮できないため、確実な
凝固・切開が行えないという問題があった。この問題を
解決するために、ブレードの高さを高くするという解決
手段があるが、その場合把持部全体の高さが大きくな
り、小型化できないという問題があった。(Problems to be Solved by Additional Items 4 to 8)
In JP-A-2001-198137, since the heating element and the gripping portion are in contact with each other, the gripping portion (jaw) becomes high in temperature due to heat transfer from the heating element, and the coagulation ability or the incision ability is lowered,
The operator's desired treatment could not be performed. In order to suppress this heat transfer, if an air layer is provided in order to provide a heat insulating layer between the jaw and the heating element, the mechanical strength of the blade will decrease,
It has been considered to provide a heat insulating member made of a material having low thermal conductivity instead of the air layer. However, when this heat insulating member is simply laminated on the metal frame, the exposed portion of the blade is reduced, a sufficient amount of heat cannot be transferred to the living tissue, and a sufficient coagulation ability cannot be obtained. Further, since the biological tissue comes into contact with the jaw and the heat insulating member, the sample tissue cannot be sufficiently compressed by the blade and the contact surface of the grip portion, which causes a problem that reliable coagulation and incision cannot be performed. In order to solve this problem, there is a solution to increase the height of the blade, but in that case, there is a problem that the height of the entire gripping portion becomes large and the size cannot be reduced.

【０１３８】特開２００１−１９８１３７号公報ではブ
レードがジョーの先端部まで達している構造であるた
め、ブレードの高さ分把持部を細径化することができ
ず、円滑な剥離操作が行えないという問題があった。ま
た、ブレードの材質が熱伝導率の低いものにした場合、
処置部の長さを確保するために、ブレードの先端に発熱
体が従来必要であったため、小型細径化が不可能である
という問題があった。In Japanese Patent Laid-Open No. 2001-198137, since the blade reaches the tip of the jaw, it is not possible to reduce the diameter of the grip portion by the height of the blade, and the smooth peeling operation cannot be performed. There was a problem. Also, when the material of the blade has a low thermal conductivity,
In order to secure the length of the treatment portion, a heating element has conventionally been required at the tip of the blade, so there is a problem that it is impossible to reduce the size and diameter.

【０１３９】（付記項４〜８の目的） 本願は前記事情
に着目してなされたもので、その目的とするところは、
生体組織を十分に圧縮し、高い凝固能力を得ることがで
き、先端が細く、円滑な剥離操作が行える手術機器を提
供することにある。(Purposes of Additional Items 4 to 8) The present application was made in view of the above circumstances, and the purpose thereof is as follows.
It is an object of the present invention to provide a surgical instrument capable of sufficiently compressing a biological tissue, obtaining a high coagulation ability, having a thin tip, and performing a smooth peeling operation.

【０１４０】（付記項４の課題を解決するための手段お
よび作用） この発明は前記目的を達成するために、ジ
ョーと断熱部材を固定に必要な部分を残し、発熱体が露
出しない範囲でブレードの長手方向に対して垂直上方
に、ブレードの露出部を増やすためにジョーと断熱部材
の側面に逃げ部を設けたことを特徴とする。(Means and Actions for Solving the Problem of Supplementary Note 4) In order to achieve the above object, the present invention leaves a portion necessary for fixing the jaw and the heat insulating member and does not expose the heating element to the blade. The upper side of the jaw and the heat insulating member is provided with a relief portion in the upper side in a direction perpendicular to the longitudinal direction of the blade to increase the exposed portion of the blade.

【０１４１】（付記項５の課題を解決するための手段お
よび作用） ジョーをブレードの先方に延長し、先細り
に形成したことを特徴とする。(Means and Actions for Solving the Problem of Supplementary Note 5) The jaw is extended to the tip of the blade and is formed in a tapered shape.

【０１４２】（付記項６の課題を解決するための手段お
よび作用） 前記延長部の下面と第２の把持部の間に隙
間が生じることを特徴とする。(Means and Actions for Solving the Problem of Supplementary Note 6) A feature is that a gap is formed between the lower surface of the extension portion and the second grip portion.

【０１４３】（付記項７の課題を解決するための手段お
よび作用） 断熱手段としてジョー内側に設けたことを
特徴とする。(Means and Actions for Solving the Problem of Supplementary Note 7) It is characterized in that it is provided inside the jaw as a heat insulating means.

【０１４４】（付記項８の課題を解決するための手段お
よび作用） ブレードの材質を熱伝導率の高い材料に
し、発熱体の位置より先方にブレードを延長したことを
特徴とする。(Means and Action for Solving the Problem of Supplementary Note 8) The blade is made of a material having a high thermal conductivity, and the blade is extended ahead of the position of the heating element.

【０１４５】（付記項４〜８の効果） 上記作用によ
り、確実な凝固切開が可能であり、先端部が細径化され
ているため、円滑な剥離操作が可能である。(Effects of Supplementary Items 4 to 8) With the above operation, a reliable coagulation incision can be performed, and since the tip portion has a reduced diameter, a smooth peeling operation can be performed.

【０１４６】（付記項９） 一対のジョーを相対的に開
閉する操作部を備える医療機器において、前記生体組織
に加熱処置を施すための熱を発生する熱源部と、前記一
対のジョーの少なくとも一方に設けられ、前記熱源部を
保持する保持手段と、前記保持手段より熱伝導率の高い
材料からなり、前記熱源部から伝熱される位置に設けら
れ、前記生体組織に加熱処置を行うことが可能な処置部
と、を備えることを特徴とする医療機器。(Additional Item 9) In a medical device comprising an operating section for relatively opening and closing a pair of jaws, at least one of a heat source section for generating heat for applying a heating treatment to the living tissue and the pair of jaws. And a holding means for holding the heat source portion, and a material having a higher thermal conductivity than the holding means, provided at a position where heat is transferred from the heat source portion, and heat treatment can be performed on the living tissue. A medical device comprising:

【０１４７】（付記項１０） 一対のジョーを相対的に
開閉する操作部を備え、前記一対のジョーの間で生体組
織を挟持させた状態で、前記生体組織の加熱処置を行う
医療機器において、前記生体組織の加熱処置用の熱源部
と、前記熱源部から伝熱される位置に設けられると共
に、前記生体組織の加熱処置を行う生体組織接触部を有
する処置部と、前記熱源部を囲むように前記一対のジョ
ーの一方に配設され、前記処置部より熱伝導率の低い材
料からなり、前記生体組織接触部が露出するように前記
処置部を保持する保持手段と、を備えることを特徴とす
る医療機器。(Additional Item 10) A medical device comprising an operating portion for relatively opening and closing a pair of jaws and performing a heat treatment on the living tissue in a state where the living tissue is sandwiched between the pair of jaws. A heat source portion for heat treatment of the living tissue, a treatment portion provided at a position where heat is transferred from the heat source portion, and having a living tissue contact portion for performing heat treatment of the living tissue, and to surround the heat source portion. A holding unit which is disposed on one of the pair of jaws, is made of a material having a lower thermal conductivity than the treatment section, and holds the treatment section such that the living tissue contact section is exposed. Medical equipment.

【０１４８】（付記項１１） 前記断熱部は、少なくと
も前記熱源部を覆う略Ｕ字状の断面形状の剛性のある枠
体によって形成されていることを特徴とする付記項９及
び１０に記載の医療機器。(Additional Item 11) The additional items 9 and 10 are characterized in that the heat insulating portion is formed by a rigid frame body having a substantially U-shaped cross section that covers at least the heat source portion. Medical equipment.

【０１４９】（付記項１２） 前記断熱部は、前記枠体
と前記熱源部との隙間に断熱性の充填剤が充填されてい
ることを特徴とする付記項１１に記載の医療機器。(Additional Item 12) The medical device according to Additional Item 11, wherein the heat insulating portion is filled with a heat insulating filler in a gap between the frame body and the heat source portion.

【０１５０】（付記項１３） 前記断熱部は、略Ｕ字状
の断面形状の剛性体によって前記処置部を保持する保持
枠が形成され、前記処置部は、前記保持枠内に収容され
る部分に前記熱源部の取付け部を有することを特徴とす
る付記項９及び１０に記載の医療機器。(Additional Item 13) In the heat insulating portion, a holding frame for holding the treatment portion is formed by a rigid body having a substantially U-shaped cross-sectional shape, and the treatment portion is a portion housed in the holding frame. 11. The medical device according to supplementary notes 9 and 10, characterized in that it has a mounting portion for the heat source portion.

【０１５１】（付記項１４） 前記断熱部は、略Ｕ字状
の断面形状の剛性体によって前記処置部を保持する保持
枠が形成され、前記保持枠は、前後の両端部に前記処置
部の支持ピンが取付けられ、前記処置部は、前記支持ピ
ンが挿入される挿入穴の少なくともいずれか一方に前記
処置部と前記保持枠との熱膨張の差を吸収する長穴状の
熱膨張吸収部を有することを特徴とする付記項９及び１
０に記載の医療機器。(Additional Item 14) In the heat insulating portion, a holding frame for holding the treatment portion is formed by a rigid body having a substantially U-shaped cross section, and the holding frame has front and rear end portions of the treatment portion. A support pin is attached, and the treatment section has a long hole-shaped thermal expansion absorption section that absorbs a difference in thermal expansion between the treatment section and the holding frame in at least one of the insertion holes into which the support pin is inserted. Additional notes 9 and 1 characterized in that
The medical device according to 0.

【０１５２】（付記項１５） 前記ジョーは、前記生体
組織を把持した際に前記処置部の両側面に前記生体組織
が接触することを防止する接触防止部を有することを特
徴とする付記項９及び１０に記載の医療機器。(Additional Item 15) The additional item 9 characterized in that the jaw has a contact prevention portion for preventing the biological tissue from contacting both side surfaces of the treatment portion when the biological tissue is grasped. And the medical device according to 10.

【０１５３】（付記項１６） 前記ジョーは、前記処置
部の先方に延出された延出部を有し、前記延出部に先細
り部を形成したことを特徴とする付記項９及び１０に記
載の医療機器。(Additional Item 16) The additional items 9 and 10 are characterized in that the jaw has an extending portion extending toward the tip of the treatment portion, and a tapered portion is formed in the extending portion. The listed medical device.

【０１５４】（付記項１７） 前記ジョーは、前記一対
のジョーを閉じた際に、前記一対のジョーの各延出部間
に隙間が生じることを特徴とする付記項９及び１０に記
載の医療機器。(Additional Item 17) In the medical device according to Additional Items 9 and 10, the jaws have a gap between the extending portions of the pair of jaws when the pair of jaws are closed. machine.

【０１５５】（付記項１８） 前記ジョーは、前記断熱
部との接触部に非接触状態で保持され、断熱用の空気層
を形成する溝部を有することを特徴とする付記項９及び
１０に記載の医療機器。(Additional Item 18) The additional items 9 and 10 are characterized in that the jaw has a groove portion that is held in a non-contact state in a contact portion with the heat insulating portion and forms an air layer for heat insulating. Medical equipment.

【０１５６】（付記項１９） 前記ジョーは、前記生体
組織を把持した際に前記処置部の両側面に前記生体組織
が接触することを防止する接触防止部を有することを特
徴とする付記項９及び１０に記載の医療機器。(Additional Item 19) The additional item 9 characterized in that the jaw has a contact preventing portion which prevents the biological tissue from contacting both side surfaces of the treatment portion when the biological tissue is grasped. And the medical device according to 10.

【０１５７】（付記項２０） 前記ジョーは、前記処置
部の先方に延出された延出部を有し、前記延出部に先細
り部を形成したことを特徴とする付記項９及び１０に記
載の医療機器。(Additional Item 20) The additional items 9 and 10 are characterized in that the jaw has an extending portion extended toward the tip of the treatment portion, and a tapered portion is formed in the extending portion. The listed medical device.

【０１５８】（付記項２１） 前記ジョーは、前記一対
のジョーを閉じた際に、前記一対のジョーの各延出部間
に隙間が生じることを特徴とする付記項９及び１０に記
載の医療機器。(Additional Item 21) In the medical device according to Additional Items 9 and 10, the jaws have a gap between the extension portions of the pair of jaws when the pair of jaws are closed. machine.

【０１５９】（付記項２２） 前記ジョーは、前記保持
手段からの伝熱を低減するように前記保持手段との間で
非接触を保つ非接触部を有することを特徴とする付記項
９及び１０に記載の医療機器。(Additional Item 22) The additional items 9 and 10 are characterized in that the jaw has a non-contact portion that maintains non-contact with the holding unit so as to reduce heat transfer from the holding unit. Medical device described in.

【０１６０】（付記項２３） 前記熱源部は前記処置部
に対して伝熱可能に固定されていることを特徴とする付
記項９及び１０記載の医療機器。(Additional Item 23) The medical device according to Additional Items 9 and 10, wherein the heat source section is fixed to the treatment section so that heat can be transferred.

【０１６１】（付記項２３の効果） 付記項２３は、熱
源部を処置部に対して伝熱可能に固定することにより、
熱源部から処置部への熱伝達を促返することに貢献す
る。(Effect of Additional Statement 23) In the additional statement 23, the heat source section is fixed to the treatment section so that heat can be transferred.
Contributes to promoting heat transfer from the heat source section to the treatment section.

【０１６２】（付記項２４） 前記保持手段は前記一対
のジョーより熱伝導率の低い材料からなることを特徴と
する付記項９及び１０記載の医療機器。(Additional Item 24) The medical device according to Additional Items 9 and 10, wherein the holding means is made of a material having a lower thermal conductivity than the pair of jaws.

【０１６３】（付記項２４の効果） 付記項２４は、保
持部として用いられる材料の熱伝導率の程度を明確にし
たもので、保持部をこのような材料を用いて構成するこ
とにより、熱源部の熱を処置部側に集中的に効率よく伝
達し、熱源部の熱かジョー側に伝達されることを防ぐよ
うにしている。(Effect of Supplementary Item 24) Supplementary Item 24 clarifies the degree of thermal conductivity of the material used as the holding portion, and the holding portion is made of such a material. The heat of the heat source portion is intensively and efficiently transferred to the treatment portion side, and the heat of the heat source portion is prevented from being transferred to the jaw side.

【０１６４】（付記項２５） 前記一対のジョーは、前
記生体接触部の露出面積が増大する方向に変形している
ことを特徴とする付記項１０の医療機器。(Additional Item 25) The medical device according to Additional Item 10, wherein the pair of jaws are deformed in a direction in which the exposed area of the living body contact portion increases.

【０１６５】（付記項２５の効果） 生体接触部の露出
面積が増大することにより、処置部（伝熱板）と生体組
織との接触面積が広がり、確実な凝固が可能になる。(Effect of Supplementary Note 25) By increasing the exposed area of the living body contact portion, the contact area between the treatment portion (heat transfer plate) and the living tissue is expanded, and reliable solidification is possible.

【０１６６】[0166]

【発明の効果】本発明によれば、熱源部で発生した熱を
処置部側に効率良く伝達させることができ、良好な凝固
能や切開能が得られ、かつ耐久性に優れた医療機器を提
供することができる。According to the present invention, it is possible to provide a medical device which can efficiently transfer the heat generated in the heat source part to the treatment part side, obtain good coagulation ability and incision ability, and is excellent in durability. Can be provided.

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

【図１】 本発明の第１の実施の形態の医療機器のシス
テム全体の概略構成図。FIG. 1 is a schematic configuration diagram of an entire system of a medical device according to a first embodiment of the present invention.

【図２】 （Ａ）は第１の実施の形態の医療機器の処置
具の先端部を示す縦断面図、（Ｂ）は（Ａ）のＩＩＢ−
ＩＩＢ線断面図。FIG. 2A is a vertical cross-sectional view showing the distal end portion of the treatment tool of the medical device according to the first embodiment, and FIG. 2B is a IIB- of FIG.
IIB line sectional drawing.

【図３】 （Ａ）は図２（Ａ）のＩＩＩＡ−ＩＩＩＡ線
断面図、（Ｂ）は図２（Ａ）のＩＩＩＢ−ＩＩＩＢ線断
面図、（Ｃ）は図２（Ａ）のＩＩＩＣ−ＩＩＩＣ線断面
図。3A is a sectional view taken along line IIIA-IIIA in FIG. 2A, FIG. 3B is a sectional view taken along line IIIB-IIIB in FIG. 2A, and FIG. 3C is sectional view taken along line IIIC- in FIG. 2A. IIIC line sectional drawing.

【図４】 第１の実施の形態の医療機器の処置具におけ
る断熱部の保持枠の支持ピンと処置部の熱膨張吸収用の
長穴部との連結部を示す要部の側面図。FIG. 4 is a side view of essential parts showing a connecting portion between a support pin of a holding frame of a heat insulating portion and a long hole portion for absorbing thermal expansion of the treatment portion in the treatment tool of the medical device according to the first embodiment.

【図５】 本発明の第２の実施の形態を示すもので、
（Ａ）は医療機器の処置具におけるジョーと処置部との
連結部を示す要部の側面図、（Ｂ）は同正面図、（Ｃ）
はジョーと処置部との連結部を分離した状態を示す正面
図。FIG. 5 shows a second embodiment of the present invention,
(A) is a side view of a main portion showing a connecting portion between a jaw and a treatment portion in a treatment instrument of a medical device, (B) is a front view thereof, and (C).
FIG. 4 is a front view showing a state in which a connecting portion between a jaw and a treatment portion is separated.

【図６】 本発明の第３の実施の形態の医療機器の処置
具を示す側面図。FIG. 6 is a side view showing a treatment tool for a medical device according to a third embodiment of the present invention.

【図７】 （Ａ）は第３の実施の形態の処置具の先端部
を示す平面図、（Ｂ）は同側面図。7A is a plan view showing a distal end portion of a treatment tool according to a third embodiment, and FIG. 7B is a side view thereof.

【図８】 第３の実施の形態の処置具の作用を示すもの
で、（Ａ）はジョーが閉じている状態を示す要部の縦断
面図、（Ｂ）はジョーが開いた状態を示す要部の縦断面
図。8A and 8B show the action of the treatment tool of the third embodiment, where FIG. 8A is a longitudinal sectional view of a main part showing a state in which the jaw is closed, and FIG. 8B shows a state in which the jaw is open. FIG.

【図９】 本発明の第４の実施の形態の医療機器のシス
テム全体の概略構成図。FIG. 9 is a schematic configuration diagram of an entire system of a medical device according to a fourth embodiment of the present invention.

【図１０】 （Ａ）は第４の実施の形態の処置具の先端
部を示す側面図、（Ｂ）は（Ａ）の要部の縦断面図、
（Ｃ）は（Ａ）のＸＣ−ＸＣ線断面図。FIG. 10A is a side view showing a distal end portion of a treatment tool according to a fourth embodiment, FIG. 10B is a longitudinal sectional view of a main portion of FIG.
(C) is a cross-sectional view taken along line XC-XC of (A).

【図１１】 図１０（Ａ）のＸＩ−ＸＩ線断面図。11 is a sectional view taken along line XI-XI of FIG.

【図１２】 第４の実施の形態の処置具の使用状態を示
す要部の縦断面図。FIG. 12 is a vertical cross-sectional view of a main part showing a usage state of the treatment tool according to the fourth embodiment.

【図１３】 本発明の第５の実施の形態を示すもので、
（Ａ）は医療機器の処置具全体の概略構成を示す側面
図、（Ｂ）は処置具のジョーの開状態を示す要部の縦断
面図。FIG. 13 shows a fifth embodiment of the present invention,
(A) is a side view showing a schematic configuration of the entire treatment tool of the medical device, and (B) is a longitudinal cross-sectional view of a main part showing an open state of a jaw of the treatment tool.

【図１４】 （Ａ）は第５の実施の形態の処置具のジョ
ーの閉状態を示す要部の縦断面図、（Ｂ）は（Ａ）のＸ
ＩＶＢ−ＸＩＶＢ線断面図。FIG. 14A is a vertical cross-sectional view of a main part showing a closed state of a jaw of a treatment tool according to a fifth embodiment, and FIG.
IVB-XIVB sectional view taken on the line.

【図１５】 本発明の第６の実施の形態を示すもので、
（Ａ）は処置具のジョーの内部の概略構成図、（Ｂ）は
（Ａ）のＸＶＢ−ＸＶＢ線断面図。FIG. 15 shows a sixth embodiment of the present invention,
(A) is a schematic block diagram inside the jaw of a treatment tool, (B) is a cross-sectional view taken along line XVB-XVB of (A).

【符号の説明】[Explanation of symbols]

７ 第１把持部（ジョー） ８ 第２把持部（ジョー） ９ リング（操作部） １５ 熱源部 １６ 処置部 １７ 断熱部 7 First grip (jaw) 8 Second grip (jaw) 9 ring (operation part) 15 heat source 16 Treatment department 17 Thermal insulation

Claims (7)

【特許請求の範囲】[Claims] 【請求項１】 一対のジョーを相対的に開閉する操作部
を備える医療機器において、 前記生体組織に加熱処置を施すための熱を発生する熱源
部と、 前記一対のジョーの少なくとも一方に設けられ、前記熱
源部を保持する保持手段と、 前記保持手段より熱伝導率の高い材料からなり、前記熱
源部から伝熱される位置に設けられ、前記生体組織に加
熱処置を行うことが可能な処置部と、を備えることを特
徴とする医療機器。1. A medical device including an operation unit that relatively opens and closes a pair of jaws, the heat source unit generating heat for performing a heating treatment on the living tissue, and at least one of the pair of jaws. A holding unit that holds the heat source unit, and a treatment unit that is made of a material having a higher thermal conductivity than the holding unit, is provided at a position where heat is transferred from the heat source unit, and can perform a heat treatment on the living tissue. A medical device comprising: 【請求項２】 前記ジョーは、前記生体組織を把持した
際に前記処置部の両側面に前記生体組織が接触すること
を防止する接触防止部を有することを特徴とする請求項
１に記載の医療機器。2. The jaw according to claim 1, wherein the jaw has a contact prevention portion that prevents the living tissue from coming into contact with both side surfaces of the treatment portion when grasping the living tissue. Medical equipment. 【請求項３】 前記ジョーは、前記処置部の先方に延出
された延出部を有し、前記延出部に先細り部を形成した
ことを特徴とする請求項１に記載の医療機器。3. The medical device according to claim 1, wherein the jaw has an extending portion extending toward the tip of the treatment portion, and a tapered portion is formed on the extending portion. 【請求項４】 前記ジョーは、前記一対のジョーを閉じ
た際に、前記一対のジョーの各延出部間に隙間が生じる
ことを特徴とする請求項２に記載の医療機器。4. The medical device according to claim 2, wherein when the jaws are closed, a gap is formed between the extension portions of the pair of jaws. 【請求項５】 前記ジョーは、前記保持手段からの伝熱
を低減するように前記保持手段との間で非接触を保つ非
接触部を有することを特徴とする請求項１に記載の医療
機器。5. The medical device according to claim 1, wherein the jaw has a non-contact portion that maintains non-contact with the holding means so as to reduce heat transfer from the holding means. . 【請求項６】 一対のジョーを相対的に開閉する操作部
を備える医療機器において、 生体組織に加熱処置を施すための熱を発生すると共に、
前記生体組織に加熱処置を行うことが可能な処置部と、 前記処置部より熱伝導率の低い材料からなり、前記一対
のジョーの一方に設けられると共に、前記処置部を保持
する保持手段と、を備えることを特徴とする医療機器。6. A medical device comprising an operating section for relatively opening and closing a pair of jaws, which generates heat for applying heat treatment to living tissue, and
A treatment section capable of performing a heat treatment on the living tissue, and a holding means made of a material having a lower thermal conductivity than the treatment section, provided on one of the pair of jaws, and holding the treatment section; A medical device comprising: 【請求項７】 前記処置部は、前記保持手段より熱伝導
率が高い材料からなり生体組織に接触して加熱処置を行
う生体組織接触部と、前記生体組織接触部に対して伝熱
可能に設けられて前記生体組織接触部を加熱するための
熱を発生する熱源部とを含むことを特徴とする請求項６
記載の医療機器。7. The treatment section is made of a material having a higher thermal conductivity than that of the holding means, and is capable of transferring heat to the living tissue contact section that comes into contact with the living tissue to perform a heating treatment. The heat source part which is provided and which generate | occur | produces the heat for heating the said biological tissue contact part is included.
The listed medical device.