JPS6029141A - Medical high frequency incision tool - Google Patents
Medical high frequency incision toolInfo
- Publication number
- JPS6029141A JPS6029141A JP58135500A JP13550083A JPS6029141A JP S6029141 A JPS6029141 A JP S6029141A JP 58135500 A JP58135500 A JP 58135500A JP 13550083 A JP13550083 A JP 13550083A JP S6029141 A JPS6029141 A JP S6029141A
- Authority
- JP
- Japan
- Prior art keywords
- flexible tube
- opening
- frequency
- incision
- medical high
- 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
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- Surgical Instruments (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、医療用高周波切開具、更に詳しくは、内視鏡
の鉗子チャンネルを通じてナイフワイヤを人体等の体腔
内に挿入し、同ナイフワイヤに焼灼用の高周波電流を通
電して体腔内の所定部位を切開する医療用の高周波切開
具に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a medical high-frequency cutting tool, more specifically, a knife wire is inserted into a body cavity of a human body through a forceps channel of an endoscope, and a high-frequency current for cauterization is applied to the knife wire. The present invention relates to a medical high-frequency incision tool that applies electricity to incise a predetermined site within a body cavity.
例えば胆石を除去する手術方法の一つとして、内視鏡の
鉗子チャンネルに処員具である生検鉗子を挿通し、内視
鏡の直視下において、胆石を採取したり、あるいは砕い
て排除する方法がある。For example, one surgical method for removing gallstones involves inserting biopsy forceps, which are surgical tools, into the forceps channel of an endoscope, and collecting or crushing the gallstones and removing them under direct vision of the endoscope. There is a way.
その場合の内視鏡の体腔内挿入部の挿通路は、ロ腔１食
道、胃、十二指腸を通り、胆管の出口に至り、生検鉗子
は内視鏡の鉗子チャンネル内を挿通されたのち、胆管内
に進入されて胆石に至る経路となる。ところでこの挿通
路においては、胆管の十二指腸への出口に当る所に乳頭
部があり、この乳頭部の開口部は、内視鏡の生体鉗子を
挿入するについては狭いために生体鉗子を挿通させるこ
とができない。In this case, the insertion path of the endoscope's body cavity insertion section passes through the esophagus, stomach, and duodenum of cavity 1, and reaches the exit of the bile duct.After the biopsy forceps are inserted into the forceps channel of the endoscope, It enters the bile duct and becomes the route to gallstones. By the way, in this insertion passage, there is a papilla at the location corresponding to the exit of the bile duct into the duodenum, and the opening of this papilla is too narrow to insert the biological forceps of the endoscope, so it is difficult to insert the biological forceps through it. I can't.
そのため乳頭部を切開して、生体鉗子を挿通しやすくす
る必要がある。Therefore, it is necessary to make an incision in the papilla to make it easier to insert biological forceps.
一方、乳頭部を切開するためには、内視鏡の鉗子チャン
ネルに、止血効果のある高周波ナイフと称される高周波
切開具を挿通して用いるが、切開する際には、高周波切
開具が胆管に挿入されていることを確認してから、切開
する必要がある。その理由は、誤って胆管出口に隣接す
る出口をもっ膵管に高周波切開具を挿入して切開すると
、膵管に炎症を起し、膵炎なひき起す恐れがあるからで
ある。On the other hand, in order to incise the papilla, a high-frequency cutting tool called a high-frequency knife, which has a hemostatic effect, is inserted through the forceps channel of the endoscope. You need to make sure that it is inserted before making the incision. The reason for this is that if a high-frequency incision tool is accidentally inserted and incised into a pancreatic duct that has an outlet adjacent to the bile duct outlet, the pancreatic duct may become inflamed, leading to pancreatitis.
この確認には高周波切開具の絶縁性可撓管の先端開口部
から可撓管内に胆汁を吸引し、内視鏡にて胆汁であるこ
とを０伊確認することが行なわれていた。そして、胆汁
を％周波切開具の絶縁性可撓管の先端端面の開口から胆
汁を吸引する方法がとられていた（実開昭５５−１８０
５１号公報参照）。This confirmation involved sucking bile into the flexible tube from the tip opening of the insulating flexible tube of the high-frequency incision tool, and confirming that it was bile using an endoscope. Then, a method was used in which bile was aspirated through an opening at the tip end of an insulating flexible tube of a % frequency incision tool (Utility Model Publication No. 55-180).
(See Publication No. 51).
次に、本発明を説明するに先立ち、高周波切開具の一例
およびその使用態様について説明する。Next, before explaining the present invention, an example of a high-frequency incision tool and its mode of use will be explained.
第１図および第２図は、従来用いられていた高周波切開
具およびその先端部の拡大断面図である。FIGS. 1 and 2 are enlarged cross-sectional views of a conventionally used high-frequency cutting tool and its tip.
高周波切開具１は第１図に示されるように、焼灼用の高
周波電流の流されるナイフワイヤ５（第２図参照）が引
き通されていて、内視鏡の部子チャンネル内に挿通され
る透明な絶縁性可撓管６と、この絶縁性可撓管３が鉗子
チャンネル内に挿通されたとき、内視鏡の鉗子口（図示
せず）の外部に配置される手元操作部４とで構成されて
いる。上記操作部４は、絶縁性可撓管３の先端面の開口
２から胆汁等を吸引するための吸引部７と、上記ナイフ
ワイヤ５を牽引し可撓管３の先端部を彎曲させて外部に
露呈するワイヤの切開部５ａを引き延ばすスライダ６と
を有しており、上記可撓管３にはその先端部寄りに上記
ナインワイヤ５の一部が露呈する切開部５ａが形成され
ている。即ちこの切開部５ａは第２図に示されるように
、上記可撓管３の先端部３ａ内に固定されたワイヤ取付
管８に一端を固着されたナイフワイヤ５が可撓管先端部
寄りに適宜の間隔をおいて管軸方向に穿設された２つの
導出孔３ｂ、５ｃから可撓管外に引き出された露呈部分
１０によって形成されている。そして、上記一方の導出
孔３ｃから管内に入り、同可撓管３内に引き通されたナ
イフワイヤ５の他端は上記スライダ６に固定され、また
図示されない高周波電源に接続されるようになっている
。なお、上記ワイヤ取付管８には補強ワイヤ９も固定さ
れている。As shown in FIG. 1, the high-frequency cutting tool 1 has a knife wire 5 (see FIG. 2) through which a high-frequency current for cauterization is passed, and is inserted into the component channel of the endoscope. A transparent insulating flexible tube 6 and a hand control unit 4 disposed outside the forceps port (not shown) of the endoscope when the insulating flexible tube 3 is inserted into the forceps channel. It is configured. The operating section 4 includes a suction section 7 for sucking bile, etc. from the opening 2 at the distal end of the insulating flexible tube 3, and a suction section 7 for pulling bile, etc., from the opening 2 on the distal end surface of the insulating flexible tube 3, and a suction section 7 for pulling the knife wire 5 and bending the distal end of the flexible tube 3 for external use. The flexible tube 3 has a slider 6 for extending a cutout 5a of the wire exposed to the nine wire 5, and the flexible tube 3 has a cutout 5a near its distal end where a part of the nine wire 5 is exposed. That is, as shown in FIG. 2, this incision 5a is formed when the knife wire 5, one end of which is fixed to the wire attachment tube 8 fixed within the distal end 3a of the flexible tube 3, is placed near the distal end of the flexible tube. It is formed by an exposed portion 10 that is drawn out of the flexible tube from two outlet holes 3b and 5c that are bored in the tube axis direction at appropriate intervals. The other end of the knife wire 5, which enters the tube through the one outlet hole 3c and is drawn through the flexible tube 3, is fixed to the slider 6 and connected to a high frequency power source (not shown). ing. Note that a reinforcing wire 9 is also fixed to the wire attachment tube 8.
このように構成されている高周波切開具１を用いて乳頭
部を切開手術するには、先ず第３図に示すように医療用
内視鏡の体腔内挿入部１４を口腔０示せず）から挿入し
、食道１５．胃１６を通し、その先端部を十二指腸１７
の乳頭部１８の近辺に停止させる。次いで内視鏡の鉗子
チャンネルの開口部（図示せず）から高周波切開具１を
鉗子チャンネル内に挿入し、内視鏡の直視下でその先端
部を胆管１９と思われる部位に対応させ、しかるのち、
可撓管３の先端間口２を胆管出口から胆管１９内に若干
進入させる。In order to perform incision surgery on the nipple using the high-frequency incision tool 1 configured as described above, first, as shown in FIG. and esophagus15. Pass through the stomach 16 and insert the tip into the duodenum 17
It is stopped near the nipple 18 of the patient. Next, the high-frequency dissecting tool 1 is inserted into the forceps channel through the opening (not shown) of the forceps channel of the endoscope, and the distal end thereof is positioned to correspond to the area believed to be the bile duct 19 under direct vision of the endoscope. after,
The distal end opening 2 of the flexible tube 3 is slightly advanced into the bile duct 19 from the bile duct outlet.
ここで高周波切開具１０手元操作部４（第１図参照）に
設けである吸引部７に結合された注射器等の吸引具（図
示せず）を操作して、上記開口２から胆汁を絶縁性可撓
管３内に吸引し胆汁であることを内視鏡により直視して
確認する。胆汁であることが確認されると高周波切開具
１の先端部３ａは確実に胆管１９内に若干挿入されたと
判断することができる。Here, a suction device (not shown) such as a syringe connected to the suction section 7 provided in the hand operation section 4 (see Fig. 1) of the high-frequency dissection device 10 is operated to insulate the bile from the opening 2. It is aspirated into the flexible tube 3 and confirmed to be bile by directly viewing it with an endoscope. If it is confirmed that it is bile, it can be determined that the distal end portion 3a of the high-frequency incision tool 1 has definitely been slightly inserted into the bile duct 19.
この判断の〜ち、先端部３ａを更に進入させると共に、
手元操作部４に設けられたスライダ６を引く。すると、
ナイフワイヤ５が引張られ、切開部５ａは直線状になり
絶縁性可撓管３は彎曲する。この状態で内視鏡の直視下
で切開をする乳頭部１８の部位に、切開部５ａを近づけ
、高周波焼灼電源（図示せず）を操作して高周波電流を
通電し、第４図に示すように乳頭部１Ｂを切開する。After this judgment, the tip 3a is further advanced, and
Pull the slider 6 provided on the hand control unit 4. Then,
The knife wire 5 is pulled, the incision 5a becomes straight, and the insulating flexible tube 3 curves. In this state, the incision part 5a is brought close to the part of the papilla 18 to be incised under the direct view of the endoscope, and a high-frequency cauterization power source (not shown) is operated to apply a high-frequency current, as shown in FIG. Make an incision in the nipple 1B.
もし、先端部３ａが誤って膵管２０内に挿入された場合
には、注射器で吸引しても胆汁は吸引されず挿入位置が
誤りであると確認できる。その場合は先端部３ａの開口
２を、胆管１９と思われる位置を再確認して、上記と同
様の操作をして再挿入すればよい。If the distal end portion 3a is mistakenly inserted into the pancreatic duct 20, no bile will be aspirated even if it is aspirated with a syringe, and it can be confirmed that the insertion position is incorrect. In that case, the opening 2 of the distal end portion 3a may be reinserted by reconfirming the location of the bile duct 19 and performing the same operation as described above.
以上が従来の高周波切開具とその使用方法であるがこの
従来の高周波切開具１では、その先端端面の開口２が胆
管１９の内壁等に当った場合には、同内壁によって開口
２が閉塞され胆汁を吸引することが不可能になってしま
うという欠点があった〇本発明の目的は上記欠点を除去
するために、絶縁性可撓管の先端部側面に、更に開口部
を設けた医療用高周波切開具を提供するにある。The above is a conventional high-frequency cutting tool and its method of use. In this conventional high-frequency cutting tool 1, when the opening 2 on the distal end surface hits the inner wall of the bile duct 19, the opening 2 is blocked by the inner wall. There was a drawback that it became impossible to aspirate bile. In order to eliminate the above-mentioned drawback, the purpose of the present invention is to provide a medical-use product in which an opening is further provided on the side surface of the distal end of an insulating flexible tube. To provide high frequency dissection tools.
本発明によれば、胆汁を吸引するための可撓管の先端端
面の開口が塞がれた時には、側面に設けた開口部から、
また側面の開口部が塞がれた時には、先端端面の開口か
ら、更に両方が塞がれていない時には両方から、絶縁性
可撓管の中へ、胆汁を吸引することができるので従来の
欠点は除去される。According to the present invention, when the opening at the distal end face of the flexible tube for suctioning bile is blocked, the bile can be extracted from the opening provided at the side face.
In addition, when the side opening is blocked, bile can be sucked into the insulating flexible tube from the opening at the distal end face, and from both when both are not blocked, which is a disadvantage of the conventional method. is removed.
以下、本発明を図示の実施例に基づいて説明する。第５
図は、本発明の一実施例を示すものであって、先端部３
ａの側面に１つの開口２１を設けたものである。その他
の構成は上記第１．第２図に示した従来の高周波切開具
１と同様であるから、その説明は重複をさけるために省
略する。また以下の実施例においても同様である。Hereinafter, the present invention will be explained based on illustrated embodiments. Fifth
The figure shows one embodiment of the present invention, in which the tip 3
One opening 21 is provided on the side surface of a. Other configurations are as described in 1 above. Since it is similar to the conventional high-frequency cutting tool 1 shown in FIG. 2, its explanation will be omitted to avoid duplication. The same applies to the following examples.
第６図は、本発明の他の実施例であって、開口２１のあ
る絶縁性可撓管３の内壁に、前記絶縁性可撓管の開口２
１の部分を補強するために、金属ノくイブ２２を嵌合し
たものである。上記′−絶縁性可撓管３は柔軟性の細い
チューブであるから、これに穿設される開口２１は補強
されることが好ましい。FIG. 6 shows another embodiment of the present invention, in which an opening 2 of the insulating flexible tube 3 is provided with an opening 21 on the inner wall of the insulating flexible tube 3.
In order to reinforce the part 1, a metal knob 22 is fitted. Since the insulating flexible tube 3 is a thin, flexible tube, the opening 21 formed therein is preferably reinforced.
第７図は、本発明の更に他の実施例を示すもので、開口
２１をナイフワイヤ切開部５ａ側と、交互にその反対の
開口２側とに複数個、しかも表面側と裏面側とに穿設し
、かつ、絶縁性可撓管３のそれぞれの上記開口２１に金
属ノ（イブ２２を嵌合して補強したものである。FIG. 7 shows still another embodiment of the present invention, in which a plurality of openings 21 are provided on the knife wire incision 5a side and alternately on the opposite opening 2 side, and moreover, on the front side and the back side. A metal tube 22 is fitted into each opening 21 of the insulating flexible tube 3 for reinforcement.
また、第８図は、本発明の別の実施例であって、上記第
７図に示した実施例における開口２１を、表裏両面に対
称的に配設したものである。FIG. 8 shows another embodiment of the present invention, in which the openings 21 in the embodiment shown in FIG. 7 are arranged symmetrically on both the front and back surfaces.
第９図は本発明の更に別の実施例であって、絶縁性可撓
管３の先端に開口２に連設して切り込まれたスリット状
の切欠開口２３を形成し、上記絶縁性可撓管３の内面に
この間口２３を補強するスリット用金属パイプ２４を嵌
合したものである。FIG. 9 shows still another embodiment of the present invention, in which a slit-shaped notch opening 23 is formed at the tip of the insulating flexible tube 3 so as to be continuous with the opening 2. A slit metal pipe 24 for reinforcing this opening 23 is fitted onto the inner surface of the flexible tube 3.
以上述べたように本発明の高周波切開具によれば、絶縁
性可撓管の先端端面又は先端側面の開口の一方が、胆管
の内壁に触れて閉塞されても、他の開口から胆汁を吸引
することができ、かつ膵炎をひき起すことなく安全確実
な手術をすることができる。As described above, according to the high-frequency cutting tool of the present invention, even if one of the openings on the distal end surface or the distal side surface of the insulating flexible tube touches the inner wall of the bile duct and is occluded, bile is suctioned from the other opening. The surgery can be performed safely and without causing pancreatitis.
第１図は、従来の高周波切開具を示す側面図、第２図は
、第１図の高周波切開具の先端部の拡大断面図、
第３図は、医療用内視鏡の体腔内挿通路を示す概略図、
第４図は、乳頭部の切開状態を示す図、第５図から第９
図は、本発明の実施例をそれぞれ示す切開具における絶
縁性可撓管の先端部の断面拡大図である。
１・・・・・高周波切開具 ２・・・・・先端端面の開
口３・・・・・絶縁性可撓管 ４・・・・・・手元操作
部５働・０・ナイフワイヤ ６・・−φ会スライダ５ａ
・・・・切開部 ７・−舎・・吸引部８・・・・・ワイ
ヤ取付管 ９・・・・・補強ワイヤ１０・・・・ナイフ
ワイヤ露呈部分（切開部）１４・・・・医療用内視鏡の
体腔内挿入部１７・・・・十二指腸 １８・・・・乳頭
部１９・・・・胆管 ２０・・・・膵管
２１・・−・先端側面の開口
特許出願人 オリンノくス光学工朶株式会社代理人 藤
川 七 部
禿 １ 区
す
亮２囚
３３囚
％４因Fig. 1 is a side view showing a conventional high-frequency cutting tool, Fig. 2 is an enlarged sectional view of the tip of the high-frequency cutting tool shown in Fig. 1, and Fig. 3 is a passageway for inserting a medical endoscope into a body cavity. FIG. 4 is a schematic diagram showing the incision state of the nipple, and FIGS. 5 to 9
The figures are enlarged cross-sectional views of the distal end portions of insulating flexible tubes in dissecting tools showing embodiments of the present invention. 1... High-frequency cutting tool 2... Opening at the tip end face 3... Insulating flexible tube 4... Hand control section 5 working 0. Knife wire 6... -φ meeting slider 5a
...Incision part 7... Suction part 8 ... Wire attachment tube 9 ... Reinforcement wire 10 ... Knife wire exposed part (incision part) 14 ... Medical Body cavity insertion portion 17 of endoscope for use Duodenum 18 Papilla 19 Bile duct 20 Pancreatic duct 21 Opening on the side of the tip Patent applicant Orinokus Optics Koto Co., Ltd. Agent Fujikawa Nanabe 1 Kusu Ryo 2 prisoners 33 prisoners% 4 causes
Claims (1)
部を露呈させていて、焼灼用の高周波電流が通電される
ナイフワイヤと、上記絶縁性可撓管の手元側に吸引部お
よび上記ナイフワイヤの掃作部を有した医療用高周波切
開具において、上記絶縁性可撓管の先端部の側壁に、上
記吸引部に連通した開口を設けたことを特徴とする医療
用高周波切開共。 （２）上記開口は、上記絶縁性可撓管の側壁の内面に嵌
合された補強パイプにより周囲が補強されていることを
！１″ｔａとする特許請求の範囲第１項記載の医療用高
周波切開具。 （ろ）上記開口は、複数個設けられていて、各開口は上
記可撓管の側壁の内面に嵌合された補強パイプにより周
囲が補強されていることを特徴とする特許請求の範囲第
１項記載の医療用高周波切開具。 （４）上記開口は、上記可撓管の先端に切り込まれたス
リット状の切欠で形成され、上記可撓管の側壁の内面に
嵌合された補強パイプにより周囲が補強されていること
を特徴とする特許請求の範囲第１項記載の医療用高周波
切開具。[Scope of Claims] (1) A knife wire having an incision for cauterization exposed on the outer surface near the tip of the insulating flexible tube and through which a high-frequency current for cauterization is applied; In a medical high-frequency cutting tool having a suction part and the knife wire sweeping part on the proximal side of the tube, an opening communicating with the suction part is provided in the side wall of the distal end of the insulating flexible tube. Features medical high frequency incision. (2) The circumference of the opening is reinforced by a reinforcing pipe fitted to the inner surface of the side wall of the insulating flexible tube! 1" ta. A medical high-frequency cutting tool according to claim 1. (B) A plurality of the openings are provided, and each opening is fitted into the inner surface of the side wall of the flexible tube. The medical high-frequency cutting instrument according to claim 1, characterized in that the periphery is reinforced by a reinforcing pipe. (4) The opening is a slit-shaped incision cut into the distal end of the flexible tube. 2. The medical high-frequency cutting tool according to claim 1, wherein the periphery is reinforced by a reinforcing pipe formed with a notch and fitted into the inner surface of the side wall of the flexible tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58135500A JPS6029141A (en) | 1983-07-25 | 1983-07-25 | Medical high frequency incision tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58135500A JPS6029141A (en) | 1983-07-25 | 1983-07-25 | Medical high frequency incision tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6029141A true JPS6029141A (en) | 1985-02-14 |
Family
ID=15153200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58135500A Pending JPS6029141A (en) | 1983-07-25 | 1983-07-25 | Medical high frequency incision tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6029141A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61257639A (en) * | 1985-05-13 | 1986-11-15 | オリンパス光学工業株式会社 | High frequency inciser |
| US6499146B2 (en) | 2000-12-29 | 2002-12-31 | Gray Matter Holdings Llc | Ear protection device |
| US6502247B2 (en) | 2000-04-05 | 2003-01-07 | Gray Matter Holdings Llc | Apparatus and method for making an ear warmer having interior seams |
| US6735784B2 (en) | 2002-01-28 | 2004-05-18 | 180S, Inc. | Apparatus and method for making an ear warmer and an ear warmer frame |
| JP2015217291A (en) * | 2014-05-21 | 2015-12-07 | コヴィディエン リミテッド パートナーシップ | Multipurpose electrosurgical instrument with telescoping aspiration cannula |
| US10111781B2 (en) | 2003-08-12 | 2018-10-30 | 180S, Inc. | Ear warmer with a substantially continuous surface |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54112588A (en) * | 1978-01-23 | 1979-09-03 | Moelnlycke Steritex As | Trachea suction catheter |
| JPS5518051B2 (en) * | 1974-07-05 | 1980-05-16 |
-
1983
- 1983-07-25 JP JP58135500A patent/JPS6029141A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518051B2 (en) * | 1974-07-05 | 1980-05-16 | ||
| JPS54112588A (en) * | 1978-01-23 | 1979-09-03 | Moelnlycke Steritex As | Trachea suction catheter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61257639A (en) * | 1985-05-13 | 1986-11-15 | オリンパス光学工業株式会社 | High frequency inciser |
| JPH0313898B2 (en) * | 1985-05-13 | 1991-02-25 | Olympus Optical Co | |
| US6502247B2 (en) | 2000-04-05 | 2003-01-07 | Gray Matter Holdings Llc | Apparatus and method for making an ear warmer having interior seams |
| US6502248B2 (en) | 2000-04-05 | 2003-01-07 | Gray Matter Holdings Llc | Apparatus and method for making an ear warmer and an ear warmer frame |
| US6499146B2 (en) | 2000-12-29 | 2002-12-31 | Gray Matter Holdings Llc | Ear protection device |
| US6735784B2 (en) | 2002-01-28 | 2004-05-18 | 180S, Inc. | Apparatus and method for making an ear warmer and an ear warmer frame |
| US10111781B2 (en) | 2003-08-12 | 2018-10-30 | 180S, Inc. | Ear warmer with a substantially continuous surface |
| JP2015217291A (en) * | 2014-05-21 | 2015-12-07 | コヴィディエン リミテッド パートナーシップ | Multipurpose electrosurgical instrument with telescoping aspiration cannula |
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