JPH10290804A - Electrode of electrode knife - Google Patents
Electrode of electrode knifeInfo
- Publication number
- JPH10290804A JPH10290804A JP9102109A JP10210997A JPH10290804A JP H10290804 A JPH10290804 A JP H10290804A JP 9102109 A JP9102109 A JP 9102109A JP 10210997 A JP10210997 A JP 10210997A JP H10290804 A JPH10290804 A JP H10290804A
- Authority
- JP
- Japan
- Prior art keywords
- heat absorbing
- absorbing body
- tip electrode
- electrode
- tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、手術などの際に用
いられ、高周波電流の出力を利用して患部における皮膚
や膜の切開、切除あるいは止血を行うための電気メスの
電極に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode of an electric scalpel, which is used at the time of surgery or the like, and which uses the output of a high-frequency current to incise, cut, or stop bleeding of the skin or membrane in an affected part.
【０００２】[0002]
【従来の技術】内視鏡下に電気メスを用いる手術として
は、整形外科領域において関節鏡視下手術がある。この
手術の際には、潅流液を関節内に満たしておく必要があ
る。この潅流液は、視野の確保、手術中の出血や組織の
除去、メス先電極からの発熱による正常組織へのダメー
ジの軽減、生体組織から発生するガスの吸収、メス先電
極に施されているコーティング材の冷却などの目的で使
用されている。2. Description of the Related Art As an operation using an electric scalpel under an endoscope, there is arthroscopic surgery in the field of orthopedic surgery. During this operation, it is necessary to fill the joint with perfusate. This perfusion solution is used to secure the visual field, remove bleeding and tissue during surgery, reduce damage to normal tissue due to heat generated from the scalpel electrode, absorb gas generated from living tissue, and apply it to the scalpel electrode It is used for cooling coating materials.
【０００３】電気メスを用いない関節鏡視下手術では、
潅流液は、通常、生理食塩水や、乳酸リンゲル液などの
電解質輸液を用いている。電気メスを用いる際は、ウリ
ガール（Ｃｙｔａｌ）１０％希釈、減塩蒸留水、５％あ
るいは１０％ブドウ糖液等の非電解質輸液が用いられて
いた。これは潅流液が電解質であると、電気メスの高周
波電流は電解質液によく流れるので、液に接している生
体組織に電流が分流してメス先電極に高周波電流が集中
せず、その結果、生体患部に対する切開や生体組織の止
血等の凝固作用がはかどらないといった問題が生じるた
めである。このため、潅流液は非電解質のものが用いら
れていた。In arthroscopic surgery without using an electric scalpel,
As the perfusate, a saline solution or an electrolyte infusion such as Ringer's lactate solution is usually used. When using an electric scalpel, a non-electrolyte infusion such as 10% diluted Urigar (Cytal), reduced salt distilled water, 5% or 10% glucose solution has been used. This is because when the perfusate is an electrolyte, the high-frequency current of the electric scalpel flows well into the electrolyte solution, so that the current shunts into the living tissue in contact with the solution and the high-frequency current does not concentrate on the scalpel tip electrode. This is because there is a problem that a coagulation effect such as incision of the diseased part of the living body or hemostasis of the living tissue cannot be improved. For this reason, a non-electrolyte perfusion solution has been used.
【０００４】[0004]
【発明が解決しようとする課題】しかしながらウリガー
ル、滅菌蒸留水などの非電解質液を関節腔内に満たすこ
とは望ましくない、何故ならばこれらの非電解質液は浸
透圧が低いため、関節滑膜より水分が体内に吸収され、
低ナトリウム血症等の電解質異常（水中毒）が発生して
しまうからである。さらにこの浸透圧の違いは関節軟骨
にも悪影響を及ぼす。従って、関節鏡視下手術では通
常、等張液である生理食塩水を潅流液として用い、電気
メスを用いる場合のみ潅流液を非電解質液に交換し、か
つその時間も短時間にとどめる必要があった。However, it is not desirable to fill the joint cavity with a non-electrolyte solution such as urigar, sterile distilled water or the like, because these non-electrolyte solutions have a low osmotic pressure and are therefore less than the joint synovium. Moisture is absorbed into the body,
This is because electrolyte abnormalities (water poisoning) such as hyponatremia occur. Furthermore, this difference in osmotic pressure also has an adverse effect on articular cartilage. Therefore, in arthroscopic surgery, it is usually necessary to use physiological saline, which is an isotonic solution, as a perfusion solution, and to exchange the perfusion solution with a non-electrolyte solution only when an electric scalpel is used, and to shorten the time. there were.
【０００５】そこで関節鏡視下において、生理食塩水、
乳酸リンゲル液などの電解質液の中でも使用可能な電気
メス先電極が必要となるが、前述したような問題が残
る。この問題は、潅流液に接触するメス先電極の露出面
積が大きいことに起因している場合が多く、そのため、
生体組織の凝固作用が発揮されにくいことが明らかにな
っている。[0005] Under arthroscopy, physiological saline,
Although an electrocautery tip electrode that can be used in an electrolyte solution such as Ringer's lactate solution is required, the above-described problem remains. This problem is often caused by the large exposed area of the scalpel tip electrode that contacts the perfusate,
It has been clarified that the coagulation action of living tissue is hardly exhibited.
【０００６】本発明は上記事情に鑑みてなされたもの
で、高周波電流の生体組織への分流が抑制され、電解質
液の長所のみを生かした電気メス手術を可能とする電気
メス電極の提供を目的としている。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electrosurgical scalpel electrode capable of suppressing a shunt of a high-frequency current into a living tissue and enabling an electrosurgical operation utilizing only the advantages of an electrolyte solution. And
【０００７】[0007]
【課題を解決するための手段】本発明は、次の手段をも
って上記目的の達成を図っている。すなわち、請求項１
に記載の電気メス電極は、棒状の熱吸収胴体部と、該熱
吸収胴体部の一方の端面である先端面に設けられた先端
電極部と、前記熱吸収胴体部の後端部に接続された出力
導通金属部と、該出力導通金属部の後端部に接続された
導電端子と、前記熱吸収胴体部および前記出力導通金属
部の表面を被覆する絶縁皮膜とを備え、前記先端電極部
は、前記熱吸収胴体部の先端面の略中央部において熱吸
収胴体部よりも細い突起状に形成され、当該先端電極部
と前記先端面とにより段部が形成されていることを特徴
としている。また、本発明の請求項２に記載の電気メス
電極は、前記出力導通金属部がパイプ状に形成されてい
ることを特徴としている。The present invention achieves the above object by the following means. That is, claim 1
Is connected to a rod-shaped heat absorbing body portion, a tip electrode portion provided on a front end surface that is one end surface of the heat absorbing body portion, and a rear end portion of the heat absorbing body portion. An output conductive metal part, a conductive terminal connected to a rear end of the output conductive metal part, and an insulating film covering surfaces of the heat absorbing body part and the output conductive metal part. Is characterized in that it is formed in a shape of a projection thinner than the heat absorbing body at substantially the center of the front end surface of the heat absorbing body, and a step is formed by the tip electrode and the front end. . Further, the electric scalpel electrode according to claim 2 of the present invention is characterized in that the output conducting metal part is formed in a pipe shape.
【０００８】[0008]
【発明の実施の形態】以下、図面を参照して本発明の一
実施形態を説明する。図１は、一実施形態に係る電気メ
ス電極を示している。この電気メス電極１は、関節鏡視
下手術に好適なものであり、符号２は断面円形の棒状の
熱吸収胴体部である。この熱吸収胴体部２は、図中左端
部である先端部が、図２（ｃ）に示すように９０度に屈
曲形成されており、その先端面２ａには、熱吸収胴体部
２と一体に先端電極部３が形成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an electric scalpel electrode according to one embodiment. The electric scalpel electrode 1 is suitable for arthroscopic surgery, and reference numeral 2 is a rod-shaped heat absorbing body having a circular cross section. The heat absorbing body 2 has a distal end, which is the left end in the figure, bent at 90 degrees as shown in FIG. 2C, and has a distal end surface 2a integral with the heat absorbing body 2. The tip electrode portion 3 is formed at the bottom.
【０００９】図３に示すように、この先端電極部３は、
熱吸収胴体部２よりも細い円柱突起状であり、熱吸収胴
体部２の先端面２ａに同軸的に形成されている。これに
より、先端電極部３と熱吸収胴体部２の先端面２ａとの
間には、段部４が形成されている。また、先端電極部３
の先端は、図示例では半球状に形成されており、この他
には、半楕円球状等なだらかな曲面に形成されていると
好ましい。As shown in FIG. 3, this tip electrode portion 3
It has a cylindrical projection shape smaller than the heat absorbing body 2, and is formed coaxially on the distal end surface 2 a of the heat absorbing body 2. Thus, a step portion 4 is formed between the distal end electrode portion 3 and the distal end surface 2a of the heat absorbing body portion 2. In addition, the tip electrode section 3
Is formed in a hemispherical shape in the illustrated example, and is preferably formed in a gently curved surface such as a semi-elliptical spherical shape.
【００１０】熱吸収胴体部２の後端部には、出力導通金
属部５が接続されている。この出力導通金属部５はパイ
プ状に形成されたもので、熱吸収胴体部２は、出力導通
金属部５内に圧入されて接続されている。さらに、この
出力導通金属部５の後端部には、図示せぬ高周波導子コ
ードが接続される導電端子として接合部６が接続されて
いる。この接合部６も、圧入によって出力導通金属部５
に接続されている。An output conducting metal part 5 is connected to a rear end of the heat absorbing body part 2. The output conducting metal part 5 is formed in a pipe shape, and the heat absorbing body 2 is press-fitted into the output conducting metal part 5 and connected thereto. Further, a joining portion 6 is connected to a rear end portion of the output conducting metal portion 5 as a conductive terminal to which a high-frequency conductor cord (not shown) is connected. The joining portion 6 is also pressed into the output conducting metal portion 5 by press fitting.
It is connected to the.
【００１１】そして、この電気メス電極１においては、
先端電極部３を除く熱吸収胴体部２の先端から出力導通
金属部５の後端にわたり、その表面が絶縁皮膜７で被覆
されている。したがって、先端電極部３と接合部６は外
部に露出している。この絶縁皮膜７により、高周波電流
の分流が抑制される。In this electrosurgical knife electrode 1,
The surface from the front end of the heat absorbing body 2 excluding the front end electrode 3 to the rear end of the output conducting metal part 5 is covered with an insulating film 7. Therefore, the tip electrode part 3 and the joint part 6 are exposed outside. The insulating film 7 suppresses the shunt of the high-frequency current.
【００１２】ここで、上記各構成要素の材質と、特に寸
法設定を要する部分の寸法を示す。 熱吸収胴体部２…熱伝導率の高い金属。例：銀、銅、
アルミニウム、ニッケル、チタンあるいはこれらの２つ
以上の合金。 外径＝２．０〜３．０ｍｍφ。 先端電極部３…材質は熱吸収胴体部２と一体であるか
ら同質。 外径＝１．０〜１．８ｍｍφ、長さ＝０．８〜２．５ｍ
ｍ。 出力導通金属部５…熱吸収胴体部２と同様の熱伝導率
の高い金属。 接合部６…熱吸収胴体部２と同様の熱伝導率の高い金
属。 絶縁皮膜７…ナイロン、テフロン、ビニル等の高分子
プラスチックあるいはセラミック等。 関節鏡視下で使用する通常の電気メス電極の長さは、１
５０ｍｍ程度であり、本実施形態の電気メス電極１もそ
れに相当する長さを有するように、熱吸収胴体部２、出
力導通金属部５および接合部６の長さは適宜に定められ
る。Here, the material of each of the above-mentioned constituent elements, and particularly the dimensions of the parts that need to be dimensioned, are shown. Heat absorbing body 2: a metal having high thermal conductivity. Example: silver, copper,
Aluminum, nickel, titanium or alloys of two or more of these. Outer diameter = 2.0-3.0 mmφ. Tip electrode part 3... The material is the same as that of the heat absorbing body part 2 because it is integrated. Outer diameter = 1.0-1.8mmφ, length = 0.8-2.5m
m. Output conducting metal part 5: a metal having a high thermal conductivity similar to that of the heat absorbing body part 2. Joint 6: A metal having a high thermal conductivity similar to that of the heat absorbing body 2. Insulating film 7: Polymer plastic such as nylon, Teflon, vinyl, or ceramic. The length of a normal electrosurgical electrode used under arthroscopy is 1
The lengths of the heat absorbing body 2, the output conductive metal part 5, and the joint 6 are appropriately determined so that the length is about 50 mm, and the length of the electric scalpel electrode 1 of the present embodiment is also equivalent to the length.
【００１３】なお、図１に示した熱吸収胴体部２の先端
部は、図２（ｃ）に示すように９０度に屈曲している
が、先端部は、図２（ａ）のようにストレートであった
り、図２（ｂ）のように４５度に屈曲していてもよく、
屈曲角度は、ストレートと９０度の範囲が好ましい。The tip of the heat absorbing body 2 shown in FIG. 1 is bent at 90 degrees as shown in FIG. 2C, but the tip is bent as shown in FIG. It may be straight or bent at 45 degrees as shown in FIG.
The bending angle is preferably in a range between straight and 90 degrees.
【００１４】次いで、上記電気メス電極１の作用を説明
する。手術にあたっては、接合部６に接続された高周波
導子コードから高周波電流を供給し、先端電極部３を、
電解質の潅流液を供給している患部に押し当てて患部の
切開、切除あるいは止血を行う。先端電極部３を患部に
押し当てると先端電極部３が患部に埋没し、かつ段部４
を形成する熱吸収胴体部２の先端面２ａが患部表面に密
接し、蓋の役目を果たす。その結果、潅流液の患部内へ
の侵入が防止されるとともに、先端電極部３が潅流液に
触れず高周波電流の分流が抑制される。このように高周
波電流の分流が抑制されることにより、先端電極部３に
高周波電流が集中し、生体組織の凝固作用が十分に行わ
れる。換言すると、分流抑制が果たされることにより、
電解質の潅流液を使用することができ、しかも、高周波
電流は低出力で済むわけである。Next, the operation of the electric scalpel electrode 1 will be described. In the operation, a high-frequency current is supplied from a high-frequency conductor cord connected to the joint 6, and the distal electrode 3 is
An incision, resection, or hemostasis of the affected part is performed by pressing the affected part to which the electrolyte perfusion solution is supplied. When the tip electrode part 3 is pressed against the affected part, the tip electrode part 3 is buried in the affected part, and the step part 4 is formed.
The distal end surface 2a of the heat absorbing body portion 2 forming a close contact with the surface of the affected part and serves as a lid. As a result, the infusion of the perfusate into the affected part is prevented, and the shunt of the high-frequency current is suppressed because the tip electrode 3 does not touch the perfusate. By suppressing the shunt of the high-frequency current in this manner, the high-frequency current is concentrated on the tip electrode portion 3, and the coagulation of the living tissue is sufficiently performed. In other words, by controlling the diversion,
A perfusate of the electrolyte can be used, and the high frequency current requires a low output.
【００１５】また、出力導通金属部５がパイプ状に形成
されているので、全体的に軽量化が図られ、このため、
当該電気メス電極１を持つ術者の負担が軽減し、特に長
時間の手術においてきわめて効果的である。これに加
え、熱吸収胴体部２から出力導通金属部５に伝達される
熱の放熱効果が向上し、これにともなって絶縁皮膜７の
焼損は起きず、寿命の長期化が図られる。Further, since the output conducting metal portion 5 is formed in a pipe shape, the overall weight can be reduced.
The burden on the operator holding the electric scalpel electrode 1 is reduced, and it is extremely effective particularly in long-time surgery. In addition, the heat radiation effect of the heat transmitted from the heat absorbing body 2 to the output conductive metal part 5 is improved, and accordingly, the insulating film 7 does not burn out, and the life is prolonged.
【００１６】また、先端電極部３が熱吸収胴体部２と一
体に、かつ同じ材質で形成されているので、先端電極部
３での発熱が素早く熱吸収胴体部２に吸収されて先端電
極部３の過熱が防止され、このため、先端電極部３に近
接する絶縁皮膜７の焼損が防がれる。Further, since the tip electrode portion 3 is formed integrally with the heat absorbing body portion 2 and is made of the same material, the heat generated at the tip electrode portion 3 is quickly absorbed by the heat absorbing body portion 2 and the tip electrode portion 3 is formed. 3 is prevented from being overheated, thereby preventing the insulating film 7 near the tip electrode portion 3 from being burned.
【００１７】また、先端電極部３の先端が半球状に形成
されているので、その先端からの発熱による生体組織へ
の付着を招かない。つまり、高周波電流は先鋭な部分に
出力が集中するので、先端電極部３の先端がそのように
先鋭であると過熱が生じ、生体組織に先端電極部３が付
着してしまう。この付着が起こると、先端電極部３を患
部からはなしたときに生体組織が引っ張られて亀裂が生
じ、新たな出血を招く。ところが、先端電極部３の先端
が半球状に形成されているので過熱せず、生体組織への
付着といった問題は生じないわけである。なお、先端電
極部３の先端は半球状の他、前述したように半楕円球状
等なだらかな曲面に形成されていることにより、上記付
着問題を回避できる。Further, since the distal end of the distal electrode portion 3 is formed in a hemispherical shape, heat generated from the distal end does not adhere to living tissue. That is, since the output of the high-frequency current is concentrated on the sharp portion, if the tip of the tip electrode portion 3 is so sharp, overheating occurs, and the tip electrode portion 3 adheres to the living tissue. When this adhesion occurs, the living tissue is pulled when the tip electrode portion 3 is removed from the affected part, causing a crack, thereby causing new bleeding. However, since the tip of the tip electrode portion 3 is formed in a hemispherical shape, it does not overheat and does not cause a problem such as adhesion to a living tissue. In addition, since the tip of the tip electrode portion 3 is formed in a gently curved surface such as a semi-elliptical sphere as described above in addition to a hemisphere, the above-described adhesion problem can be avoided.
【００１８】さて、本実施形態の電気メスは、上記寸法
に形成されていることにより、特に次の作用を示す。The electric scalpel according to the present embodiment has the following functions because it is formed in the above dimensions.
【００１９】Ａ．先端電極部３の長さに関して 先端電極部３の長さは、０．８〜２．５ｍｍである。も
しも、２．５ｍｍより長いと、関節の半月板のように軟
骨性質を持つ生体組織は硬質であり、先端電極部３を押
し当てても全長を埋没させにくい。こうなると先端電極
部３が潅流液に触れ、高周波電流が分流してしまい止血
作用が十分に発揮されない。また、先端電極部３が０．
８ｍｍより短いと、患部に当たる接触面積が小さくなっ
て患部が瞬時に高温化することにより、生体内の水分が
沸騰し、ひいては組織爆発が起こって患部が掘り起こさ
れてしまい、止血作用は掘り起こされた患部表面だに生
じて再出血の可能性を残してしまう。この問題は、出力
を下げれば解消し得るが、そうすると止血面積の不足や
手術の遅延を招く。A. Regarding the Length of the Tip Electrode 3 The length of the tip electrode 3 is 0.8 to 2.5 mm. If it is longer than 2.5 mm, a living tissue having cartilage properties like a meniscus of a joint is hard, and it is difficult to bury the entire length even when the tip electrode portion 3 is pressed. In this case, the tip electrode portion 3 comes into contact with the perfusate, and the high-frequency current is shunted, so that the hemostatic effect is not sufficiently exerted. In addition, when the tip electrode portion 3 is set to 0.1.
When the length is shorter than 8 mm, the contact area hitting the affected part becomes small and the affected part instantaneously rises in temperature, causing the water in the living body to boil, eventually causing a tissue explosion and excavating the affected part, and the hemostatic effect was excavated. It occurs on the affected surface, leaving the possibility of rebleeding. This problem can be solved by lowering the output, but this causes a shortage of the hemostatic area and a delay in the operation.
【００２０】本実施形態の電気メス電極１は、先端電極
部３の長さが０．８〜２．５ｍｍといった適正な範囲に
設定されているので、上記の各問題は生じず、関節の半
月板のように軟骨性質を持つ生体組織の手術を良好に行
える。In the electric scalpel electrode 1 of the present embodiment, since the length of the tip electrode portion 3 is set in an appropriate range of 0.8 to 2.5 mm, the above-mentioned problems do not occur, and the half-moon Surgery of living tissue having cartilage properties like a plate can be performed favorably.
【００２１】Ｂ．先端電極部３の太さに関して 先端電極部３は、外径１．０〜１．８ｍｍφの太さを有
している。もしも、外径が１．８ｍｍφよりも大きいと
止血すべき面積が大きくなりすぎ、周辺の正常組織にま
で損傷を与えてしまうおそれがある。また、外径が１．
０ｍｍφよりも小さいと、上記Ａで述べた先端電極部３
の長さが長い場合と同様の状態、すなわち患部に当たる
接触面積が小さくなって患部が瞬時に高温化することに
よる弊害を招く。B. Regarding the thickness of the tip electrode portion 3 The tip electrode portion 3 has a thickness of 1.0 to 1.8 mmφ in outer diameter. If the outer diameter is larger than 1.8 mmφ, the area to stop bleeding becomes too large, and there is a possibility that the surrounding normal tissue may be damaged. The outer diameter is 1.
If it is smaller than 0 mmφ, the tip electrode portion 3 described in A above
In the case where the length of the diseased part is long, the contact area of the diseased part becomes small and the temperature of the diseased part instantaneously rises, resulting in an adverse effect.
【００２２】本実施形態の電気メス電極１は、先端電極
部３の外径が１．０〜１．８ｍｍφといった適正な範囲
に設定されているので、上記の各問題の発生が防止され
る。In the electric scalpel electrode 1 of the present embodiment, since the outer diameter of the tip electrode portion 3 is set to an appropriate range such as 1.0 to 1.8 mmφ, occurrence of each of the above-mentioned problems is prevented.
【００２３】Ｃ．熱吸収胴体部２の太さに関して 熱吸収胴体部２は、外径２．０〜３．０ｍｍφの太さを
有している。もしも、外径が３．０ｍｍφよりも大きい
と、先端電極部３における前述の外径および長さとの兼
ね合いから、目視下あるいは鏡視下のいずれの場合であ
っても熱吸収胴体部２自身によって視野が妨げられる。
そして止血作用等の手術状況を確認するために、その都
度先端電極部３を患部から離さなければならないといっ
た不便を招く。また、外径が２．０ｍｍφよりも小さい
と、先端電極部３での発熱を十分吸収できず、絶縁皮膜
７の焼損を招いて寿命が短くなる。C. Regarding the Thickness of Heat Absorbing Body 2 The heat absorbing body 2 has an outer diameter of 2.0 to 3.0 mmφ. If the outer diameter is larger than 3.0 mmφ, the heat-absorbing body 2 itself can be used either visually or under a mirror view due to the above-mentioned outer diameter and length of the tip electrode portion 3. The view is obstructed.
In addition, in order to check the operation status such as the hemostatic action, the inconvenience that the distal end electrode portion 3 must be separated from the affected part every time is caused. On the other hand, if the outer diameter is smaller than 2.0 mmφ, the heat generated in the tip electrode portion 3 cannot be sufficiently absorbed, and the insulating film 7 is burned, resulting in a shorter life.
【００２４】本実施形態の電気メス電極１は、熱吸収胴
体部２の外径が２．０〜３．０ｍｍφといった適正な範
囲に設定されており、このため、上記の各問題の発生が
防止される。なお、上記実施の形態では、潅流液を用い
る場合について説明したが、潅流液を用いない場合は、
電気メス電極１の各寸法は、上記の範囲に限定されるこ
とはなく、外径が２．０ｍｍφよりも小さくても良い。
ここで、図４に示すものは、電気メス電極１の先端電極
部３の根元に、周方向へ溝部８を形成し、この溝部８へ
絶縁被覆７の端部を食い込ませたもので、このような構
造とすることにより、絶縁被覆７の端部の捲れ等の不都
合を確実に防止することができる。また、図５に示すも
のは、熱吸収胴体部２と接合部６とを一本の金属棒と
し、その外周にパイプ状の出力導通金属部５を取り付け
て放熱効果を向上させた電気メス電極１である。In the electric scalpel electrode 1 of the present embodiment, the outer diameter of the heat absorbing body 2 is set to an appropriate range of 2.0 to 3.0 mmφ, so that the above-mentioned problems are prevented from occurring. Is done. In the above embodiment, the case where the perfusion solution is used has been described.
Each dimension of the electric scalpel electrode 1 is not limited to the above range, and the outer diameter may be smaller than 2.0 mmφ.
Here, the one shown in FIG. 4 is one in which a groove 8 is formed in the circumferential direction at the base of the tip electrode portion 3 of the electric scalpel electrode 1, and the end of the insulating coating 7 is cut into the groove 8. By adopting such a structure, it is possible to reliably prevent inconvenience such as turning of the end of the insulating coating 7. FIG. 5 shows an electric scalpel electrode in which the heat absorbing body portion 2 and the joining portion 6 are formed as a single metal rod, and a pipe-shaped output conducting metal portion 5 is attached to the outer periphery thereof to improve the heat radiation effect. It is one.
【００２５】[0025]
【発明の効果】以上説明したように、本発明の請求項１
に記載の電気メス電極によれば、先端電極部が熱吸収胴
体部の先端面の略中央部において熱吸収胴体部よりも細
い突起状に形成されて段部が設けられ、この段部が患部
を塞ぐ作用を得るので、潅流液の患部内への侵入が防止
されるとともに、先端電極部が潅流液に触れず高周波電
流の分流が抑制される。その結果として、電解質の潅流
液の性質を有効に生かした手術が可能となり、しかも、
供給する高周波電流を低出力に抑えることができる。As described above, according to the first aspect of the present invention,
According to the electric scalpel electrode described in the above, the tip electrode portion is formed in a projection shape thinner than the heat absorbing body portion at substantially the center of the distal end surface of the heat absorbing body portion, and a step portion is provided, and this step portion is an affected part As a result, the perfusion solution is prevented from entering the affected area, and the shunt of the high-frequency current is suppressed because the tip electrode does not touch the perfusion solution. As a result, surgery that makes effective use of the properties of the electrolyte perfusate becomes possible, and moreover,
The supplied high-frequency current can be suppressed to a low output.
【００２６】また、本発明の請求項２に記載の電気メス
電極によれば、出力導通金属部がパイプ状に形成されて
いるので、軽量化が図られるにともない術者の負担が軽
減する。これに加え、熱吸収胴体部から出力導通金属部
に伝達される熱の放熱効果が向上し、これにともなって
絶縁皮膜の焼損が防がれ寿命の長期化が図られる。Further, according to the electric scalpel electrode according to the second aspect of the present invention, since the output conducting metal portion is formed in a pipe shape, the burden on the operator is reduced as the weight is reduced. In addition, the heat radiation effect of the heat transmitted from the heat absorbing body to the output conducting metal part is improved, and accordingly, the burnout of the insulating film is prevented and the life is prolonged.
【図１】 本発明の一実施形態に係る電気メスの側面図
である。FIG. 1 is a side view of an electric knife according to an embodiment of the present invention.
【図２】 同電気メスにおける３種類の先端形状を示す
側面図である。FIG. 2 is a side view showing three types of tip shapes in the electric scalpel.
【図３】 同電気メスの先端部の（ａ）正面図、（ｂ）
側面図である。FIG. 3A is a front view of a distal end portion of the electric knife, and FIG.
It is a side view.
【図４】 電気メスの他の先端形状を示す一部を断面視
した側面図である。FIG. 4 is a cross-sectional side view of a part of another distal end shape of the electric knife.
【図５】 他の構造の電気メスを示す電気メスの側面図
である。FIG. 5 is a side view of the electric knife showing another structure of the electric knife.
１ 電気メス電極 ２ 熱吸収胴体部 ２ａ 先端面 ３ 先端電極部 ４ 段部 ５ 出力導通金属部 ６ 接合部（導電端子） ７ 絶縁皮膜 DESCRIPTION OF SYMBOLS 1 Electric scalpel electrode 2 Heat absorption body part 2a Tip surface 3 Tip electrode part 4 Step part 5 Output conduction metal part 6 Joint part (conductive terminal) 7 Insulating film
Claims (2)
先端電極部と、 前記熱吸収胴体部の後端部に接続された出力導通金属部
と、 該出力導通金属部の後端部に接続された導電端子と、 前記熱吸収胴体部および前記出力導通金属部の表面を被
覆する絶縁皮膜とを備え、 前記先端電極部は、前記熱吸収胴体部の先端面の略中央
部において熱吸収胴体部よりも細い突起状に形成され、
当該先端電極部と前記先端面とにより段部が形成されて
いることを特徴とする電気メス電極。1. A rod-shaped heat absorbing body portion, a tip electrode portion provided on a front end surface which is one end surface of the heat absorbing body portion, and an output conduction connected to a rear end portion of the heat absorbing body portion. A metal part, a conductive terminal connected to a rear end of the output conductive metal part, and an insulating film covering surfaces of the heat absorbing body part and the output conductive metal part. At a substantially central portion of the distal end surface of the heat absorbing body portion, the heat absorbing body portion is formed in a projection shape narrower than the heat absorbing body portion,
An electric scalpel electrode, wherein a step portion is formed by the tip electrode portion and the tip surface.
れていることを特徴とする請求項１に記載の電気メス電
極。2. The electric scalpel electrode according to claim 1, wherein the output conductive metal portion is formed in a pipe shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9102109A JPH10290804A (en) | 1997-04-18 | 1997-04-18 | Electrode of electrode knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9102109A JPH10290804A (en) | 1997-04-18 | 1997-04-18 | Electrode of electrode knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10290804A true JPH10290804A (en) | 1998-11-04 |
Family
ID=14318645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9102109A Pending JPH10290804A (en) | 1997-04-18 | 1997-04-18 | Electrode of electrode knife |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10290804A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014008101A (en) * | 2012-06-28 | 2014-01-20 | Tadashi Kawakita | Thermotherapeutic device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5394481A (en) * | 1977-01-31 | 1978-08-18 | Olympus Optical Co | Operating string for percutaneous endoscope instrument |
| JPS5429993U (en) * | 1977-08-01 | 1979-02-27 | ||
| JPS54181588U (en) * | 1978-06-09 | 1979-12-22 | ||
| JPH06505654A (en) * | 1991-02-06 | 1994-06-30 | ラパロームド コーポレイション | electrosurgical device |
| JPH09501328A (en) * | 1993-05-10 | 1997-02-10 | サプリヤル アンド エガーズ パートナーズ | Surgical incision method and device |
-
1997
- 1997-04-18 JP JP9102109A patent/JPH10290804A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5394481A (en) * | 1977-01-31 | 1978-08-18 | Olympus Optical Co | Operating string for percutaneous endoscope instrument |
| JPS5429993U (en) * | 1977-08-01 | 1979-02-27 | ||
| JPS54181588U (en) * | 1978-06-09 | 1979-12-22 | ||
| JPH06505654A (en) * | 1991-02-06 | 1994-06-30 | ラパロームド コーポレイション | electrosurgical device |
| JPH09501328A (en) * | 1993-05-10 | 1997-02-10 | サプリヤル アンド エガーズ パートナーズ | Surgical incision method and device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014008101A (en) * | 2012-06-28 | 2014-01-20 | Tadashi Kawakita | Thermotherapeutic device |
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