JP5011527B2 - Microwave surgical device - Google Patents

Microwave surgical device Download PDF

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JP5011527B2
JP5011527B2 JP2006235473A JP2006235473A JP5011527B2 JP 5011527 B2 JP5011527 B2 JP 5011527B2 JP 2006235473 A JP2006235473 A JP 2006235473A JP 2006235473 A JP2006235473 A JP 2006235473A JP 5011527 B2 JP5011527 B2 JP 5011527B2
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microwave
surgical
blade
surgical instrument
conductor
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JP2008054925A (en
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徹 谷
成幸 仲
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Shiga University of Medical Science NUC
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Description

本発明は、医療用手術刃を含み、マイクロ波を利用した医療用手術器、すなわち医療用手術刃を含むマイクロ波手術器に関する。   The present invention relates to a medical surgical instrument using a microwave including a medical surgical blade, that is, a microwave surgical instrument including a medical surgical blade.

生体組織の手術に高周波用とされる双極型（バイポーラ型）の手術器は種々利用されている。マイクロ波手術器として、マイクロ波伝送用内部導体にマイクロ波照射用中心電極（導体）を構成する生体組織の切開、切離、切除等の手術刃を接続し、手術刃の先端部を残して絶縁体で手術刃を被覆し、絶縁体の外側に先細り筒状の外部電極（導体）を設け、外部導体をマイクロ波伝送用外部導体に接続したものが開示されている（特許文献１）。しかしながら、上記マイクロ手術器は、開腹下での使用を前提としているため、カテーテル、内視鏡などでの使用には適さない構造であった。
特開平5-084255号公報 Surgical bipolar which is high frequency (by port over La-type) to surgery of the living tissues have been variously utilized. As a microwave surgical device, connect the surgical blade for incision, separation, excision, etc. of living tissue that constitutes the central electrode (conductor) for microwave irradiation to the inner conductor for microwave transmission, leaving the tip of the surgical blade A surgical blade is covered with an insulator, a tapered cylindrical outer electrode (conductor) is provided outside the insulator, and the outer conductor is connected to an outer conductor for microwave transmission (Patent Document 1). However, since the above-described microsurgical device is assumed to be used under laparotomy, it has a structure that is not suitable for use with a catheter, an endoscope, or the like.
Japanese Patent Laid-Open No. 5-084255

本発明の課題は、医療用手術刃を含む手術器であって、マイクロ波を利用し、生体組織を切開しつつ、止血、凝固能に優れたマイクロ波手術器を提供することである。   An object of the present invention is to provide a surgical instrument including a medical surgical blade, which is excellent in hemostasis and coagulation ability while incising a living tissue using microwaves.

本発明者らは、上記課題を解決するために鋭意研究を重ねた結果、手術器の先端部が、マイクロ波伝送用中心導体、絶縁体、及び外部導体によって構成され、中心導体及び外部導体を露出させることにより、マイクロ波の印加が対象物に対して可能であるマイクロ波手術器を提供しうることに成功し、本発明を完成した。   As a result of intensive studies in order to solve the above problems, the inventors of the present invention have a distal end portion of a surgical instrument configured by a microwave transmission center conductor, an insulator, and an outer conductor. By exposing it, it was possible to provide a microwave surgical instrument in which microwaves can be applied to an object, and the present invention was completed.

すなわち本発明は、以下からなる。
１．医療用手術刃を含む手術器であって、該手術器の先端部が、同軸状のマイクロ波伝送用中心導体、絶縁体、及び外部導体を含む構造からなり、該中心導体の先端部からなる手術刃が刃の先端部を除いて絶縁体を介して外部導体に覆われ、該刃の先端部がその刃線を該外部導体の両端部と平行に外部導体の側面に突出して露出されていることにより、マイクロ波の印加が、対象物に対して可能であるマイクロ波手術器。
２．手術刃の刃の先端部と手術刃を覆った外部導体が、生体表面に接触することにより対象部位の切開、止血、凝固が可能になる前項１に記載のマイクロ波手術器。
３．同軸状のマイクロ波伝送部が軟性のケーブルであることを特徴とする、内視鏡および／またはカテーテルに挿入可能な前項１または２に記載のマイクロ波手術器。 That is, this invention consists of the following.
1. A surgical instrument including a medical surgical blade tip portion of the surgical instrument is coaxial microwave transmission center conductor, an insulator, and plus the structure including the outer conductor consists of tip of said center conductor The surgical blade is covered with an external conductor through an insulator except for the tip of the blade, and the tip of the blade is exposed by projecting the blade line parallel to both ends of the external conductor to the side of the external conductor. Therefore, a microwave surgical instrument capable of applying a microwave to an object.
2 . 2. The microwave surgical instrument according to 1 above, wherein the distal portion of the surgical blade and the outer conductor covering the surgical blade come into contact with the surface of the living body to enable incision, hemostasis, and coagulation of the target site.
3 . 3. The microwave surgical instrument according to item 1 or 2 , wherein the coaxial microwave transmission unit is a flexible cable and can be inserted into an endoscope and / or a catheter.

本発明のマイクロ波手術器は、操作し易く、生体組織を切開しつつ、マイクロ波処置により止血、凝固等を同時に効果的に行うことができる。また、本発明のマイクロ波手術器は、対象物以外の部位にマイクロ波の不要放射をしない構造からなることにより、無駄なく効果的に手術刃としての機能を達成しうる。   The microwave surgical instrument of the present invention is easy to operate and can effectively stop hemostasis, coagulation, etc. simultaneously by microwave treatment while incising a living tissue. In addition, the microwave surgical instrument of the present invention can achieve a function as a surgical blade effectively without waste by having a structure that does not emit unnecessary microwaves to a part other than the target.

以下に本発明の実施形態を、添付図面を参照しながら説明する。ただし、これらの図は本発明の内容を象徴的に示す一例であって、本発明はこれらに限定されるものではない。   Embodiments of the present invention will be described below with reference to the accompanying drawings. However, these drawings are examples showing the contents of the present invention symbolically, and the present invention is not limited to these.

本発明のマイクロ波手術器の代表例を図１〜４に示す。本マイクロ波手術器は、医療用手術刃を含み、同軸状のケーブルからなるマイクロ波伝送部でマイクロ波発生装置と接続されている。本マイクロ波手術器の先端部は、マイクロ波伝送用中心導体、絶縁体、及び外部導体を含む構造からなる。該先端部では各種形状の双極型の片方のみを使用しており、対象物である生体組織等と接触する作用部位は、鋭利な刃状の形態であり、露出された中心導体によって形成される。その周囲は絶縁体で覆われ、さらに外部導体で覆う形状となっている。本手術器の先端部は、鉤状構造を有していてもよい。同軸状のマイクロ波伝送部は軟性のケーブルとすることができる。軟性のケーブルとすることで、本発明の手術刃を、内視鏡および／またはカテーテルなどに挿入することが可能となる。   A representative example of the microwave surgical instrument of the present invention is shown in FIGS. This microwave surgical instrument includes a medical surgical blade, and is connected to a microwave generator by a microwave transmission unit made of a coaxial cable. The distal end portion of the present microwave surgical device has a structure including a center conductor for microwave transmission, an insulator, and an outer conductor. The tip portion uses only one of the bipolar types of various shapes, and the action site that comes into contact with the target biological tissue or the like has a sharp blade shape and is formed by the exposed central conductor. . The periphery is covered with an insulator and further covered with an external conductor. The distal end portion of the present surgical device may have a hook-like structure. The coaxial microwave transmission section can be a flexible cable. By using a flexible cable, the surgical blade of the present invention can be inserted into an endoscope and / or a catheter.

本発明のマイクロ波手術器は、同軸状のケーブルを経てマイクロ波が印加される。本発明において、印加される電圧は３０Ｖ〜６０Ｖである。６０Ｖより高ければ、組織に及ぼす損傷が大きくなり、適切でないからである。また、３０Ｖ未満では、手術刃としての機能および止血効果が十分ではないからである。   In the microwave surgical instrument of the present invention, microwaves are applied through a coaxial cable. In the present invention, the applied voltage is 30V to 60V. If the voltage is higher than 60 V, damage to the tissue is increased, which is not appropriate. Moreover, if it is less than 30V, it is because the function as a surgical blade and the hemostatic effect are not enough.

図１の左図は本発明のマイクロ波手術器本体の側面図であり、下図は上面図であり、右図は先端部の正面図である。図２〜４のマイクロ波手術器の先端部は、対象物を引っ掛けやすくするために鉤状になっており、いずれも対象物と接触する作用部位は鋭利な刃状の形態であり、露出された中心導体によって形成される。中心導体を通じて、対象物にマイクロ波が印加される。   The left view of FIG. 1 is a side view of the microwave surgical instrument main body of the present invention, the lower view is a top view, and the right view is a front view of the distal end portion. The tip of the microwave surgical device in FIGS. 2 to 4 has a hook shape to make it easy to hook the object, and the action part that contacts the object has a sharp blade-like shape and is exposed. Formed by a central conductor. A microwave is applied to the object through the central conductor.

以上説明したように、本発明のマイクロ波手術器は、医療分野での外科的処置領域において、手術刃としての機能を有すると共に、対象物である生体組織等にマイクロ波が印加されることで、生体組織の止血、凝固能を有する。したがって、本マイクロ波手術器は、操作しやすく、生体組織を切開しつつ、止血、凝固を一回の処置で達成しうる手術器である。また、ミストや煙が出ず、止血能が極めて強く優れており、限られた腹腔内空間での手術器として適している。   As described above, the microwave surgical instrument of the present invention has a function as a surgical blade in a surgical treatment area in the medical field, and microwaves are applied to a living tissue or the like that is an object. It has hemostasis and coagulation ability of living tissues. Therefore, this microwave surgical instrument is a surgical instrument that is easy to operate and can achieve hemostasis and coagulation with a single treatment while incising a living tissue. In addition, mist and smoke do not come out and the hemostatic ability is extremely strong and excellent, and it is suitable as a surgical instrument in a limited intra-abdominal space.

マイクロ波手術器の一態様を示す図である。It is a figure which shows the one aspect | mode of a microwave surgical instrument. マイクロ波手術器の他の一態様を示す図である。It is a figure which shows another one aspect | mode of a microwave surgical instrument. マイクロ波手術器の他の一態様を示す図である。It is a figure which shows another one aspect | mode of a microwave surgical instrument. マイクロ波手術器の他の一態様を示す図である。It is a figure which shows another one aspect | mode of a microwave surgical instrument.

符号の説明Explanation of symbols

１ 中心導体（手術刃）
２ 絶縁体
３ 外部導体 1 Central conductor (surgical blade)
2 Insulator 3 Outer conductor

Claims (3)

医療用手術刃を含む手術器であって、該手術器の先端部が、同軸状のマイクロ波伝送用中心導体、絶縁体、及び外部導体を含む構造からなり、該中心導体からなる手術刃が刃の刃先端部を除いて絶縁体を介して外部導体に覆われ、該手術刃の刃線が、絶縁体を間に介して向かい合う近接する該外部導体の端部と平行に外部導体の側面に突出して露出されていることにより、マイクロ波の印加が、対象物に対して可能であるマイクロ波手術器。 A surgical instrument including a medical surgical blade, surgical blade tip of the surgical instrument is coaxial microwave transmission center conductor, an insulator, and plus the structure including the outer conductor consists of said central conductors There is covered the outer conductor through an insulator except for the blade tip of the blade, the edge line of said surgical blade, parallel to the outer conductor and the end portion of the external conductor near face through between the insulator A microwave surgical device capable of applying a microwave to an object by being exposed to protrude from a side surface. 手術刃の刃線部と手術刃を覆った外部導体が、生体表面に接触することにより対象部位の切開、止血、凝固が可能になる請求項１に記載のマイクロ波手術器。 An outer conductor covering the surgical blade and the edge line portion of the surgical blade, an incision of the target site by contacting the biological surface, hemostatic, microwave surgery of claim 1 in which solidification is possible. 同軸状のマイクロ波伝送部が軟性のケーブルであることを特徴とする、内視鏡および／またはカテーテルに挿入可能な請求項１または２に記載のマイクロ波手術器。   The microwave surgical instrument according to claim 1 or 2, wherein the coaxial microwave transmission section is a flexible cable and can be inserted into an endoscope and / or a catheter.
JP2006235473A 2006-08-31 2006-08-31 Microwave surgical device Active JP5011527B2 (en)

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US9198724B2 (en) * 2011-04-08 2015-12-01 Covidien Lp Microwave tissue dissection and coagulation
WO2013022077A1 (en) 2011-08-10 2013-02-14 国立大学法人 滋賀医科大学 Microwave surgical instrument
JP7267539B2 (en) * 2019-03-29 2023-05-02 日本ゼオン株式会社 Endoscope Microwave Irradiator

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US4534347A (en) * 1983-04-08 1985-08-13 Research Corporation Microwave coagulating scalpel
JPS6052818U (en) * 1983-09-20 1985-04-13 銭谷　利男 Ophthalmology microwave surgical instrument
JP2936081B2 (en) * 1991-05-17 1999-08-23 株式会社アズウェル Microwave surgical instrument
JPH08187297A (en) * 1995-01-11 1996-07-23 Olympus Optical Co Ltd Microwave treatment device

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