JPH0520715U - Microwave surgical instrument - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a microwave surgical instrument for hemostasis and coagulation of relatively thin tissues and small blood vessels without adversely affecting the surroundings. [Structure] An internal electrode 7 connected to an internal conductor 4 for microwave transmission is provided at the tip of one leg 2 of a forceps-shaped surgical instrument body 1, and an external electrode for microwave transmission is provided at the tip of the other leg 3 of the body 1. An external electrode 9 connected to the conductor 6 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a microwave surgical instrument suitable for hemostasis and coagulation of relatively thin tissues and small blood vessels.

[0002]

[Prior Art]

 Conventionally, when hemostasis and coagulation of relatively thin tissues and small blood vessels are performed, an electric scalpel is used, or the microwave generated between the needle-shaped or ball-shaped monopolar center electrode and the outer conductor of its base is used. Dielectric heat is used.

[0003]

[Problems to be solved by the device]

 When using a conventional electric knife, there is a problem that spark discharge is generated and the spark discharge causes carbonization of the tissue. Further, when needle-shaped or ball-shaped electrodes are used, there is a problem in that the surroundings of the target tissue are thermally affected.

The present invention has been made in consideration of the above points, and an object of the present invention is to provide a microwave surgical instrument capable of locally stopping and coagulating only a target tissue without adversely affecting the surroundings. ..

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the microwave surgical instrument of the present invention is provided with an internal electrode connected to an internal conductor for microwave transmission at the tip of one leg of the main body of the instrument in the form of tweezers. An external electrode connected to an external conductor for microwave transmission is provided at the tip of the leg.

[0006]

[Action]

 The microwave surgical instrument of the present invention configured as described above is provided with an internal electrode and an external electrode at the tips of both legs of the tweezers-shaped surgical instrument body, and both electrodes are provided with an internal conductor for microwave transmission and an external electrode. Since they are connected to a conductor, by sandwiching a relatively thin tissue or small blood vessel with both electrodes, hemostasis and coagulation can be performed easily in a very short time by the generated dielectric heat.

[0007]

【Example】

 One embodiment will be described with reference to FIGS. 1 is a tweezers-shaped surgical instrument main body, 2 and 3 are one and other legs of the main body 1, 4 are internal conductors for microwave transmission, 5 is an insulator covering the internal conductor 4, and 6 is the outer periphery of the insulator 5. It is an outer conductor for microwave transmission provided in the., Forms a coaxial pipe, and is fixed to the monopod 2 by welding.

Reference numeral 7 denotes an internal electrode that is connected and fixed to the tip of the internal conductor 4, and is located at the tip of the monopod 2. Reference numeral 8 denotes a thin metal plate, both ends of which are fixed to the tip of the outer conductor 6 and the tip of the other leg 3 by welding, electrically connecting both tips, and the external electrode 9 is attached to the tip of the other leg 3. Has been formed. Reference numeral 10 is a coaxial cable whose tip is connected to the inner conductor 4 and the outer conductor 6. Then, by pressing the legs 2 and 3 and sandwiching the tissue 11 such as a small blood vessel as shown in FIG. 4, hemostasis and coagulation can be performed by the generated dielectric heat.

[0009]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. An internal electrode 7 and an external electrode 9 are provided at the tips of both legs 2 and 3 of the tweezers-shaped surgical instrument main body 1, and both electrodes 7 and 9 are connected to an internal conductor 4 and an external conductor 6 for microwave transmission. Therefore, by sandwiching a comparatively thin tissue or small blood vessel between both electrodes 7 and 9, it is possible to locally stop bleeding and coagulate easily by a generated dielectric heat in a very short time. It is possible to prevent carbonization of the tissue and adverse thermal effects on the surrounding tissue.

[Brief description of drawings]

FIG. 1 is a cutaway front view of an embodiment of a microwave operating device of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a perspective view of FIG. 1.

FIG. 4 is a front view of the usage state of FIG. 1.

[Explanation of symbols]

 1 Surgery device body 2 One leg 3 Other leg 4 Inner conductor 6 Outer conductor 7 Inner electrode 9 Outer electrode

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[Procedure amendment]

[Submission date] June 24, 1991

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (1)

[Scope of utility model registration request] 1. An internal electrode connected to an internal conductor for microwave transmission is provided at one end of one leg of a surgical instrument main body, and is connected to an external conductor for microwave transmission at the other end of the other leg of the main body. Microwave surgical instrument provided with external electrodes.