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Medical electrode needle device

An electrode needle and medical technology, applied in trocars, medical science, heating surgical instruments, etc., can solve problems such as inability to perform accurate temperature detection, and achieve reliable detection and easy joining operations

Inactive Publication Date: 2007-05-16
KK TOPCON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the thermocouple is affected by the high-frequency current supplied to the electrode needle, and high-frequency noise may be mixed into the detection signal generated by the thermocouple, resulting in the defect that accurate temperature detection cannot be performed.

Method used

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Embodiment Construction

[0025] Embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a schematic view showing an electrode needle device according to a first embodiment of the present invention, Fig. 2 is a schematic cross-sectional view showing main parts of the first embodiment of the present invention, and Fig. 3 is a schematic view showing a thermocouple tip part in the first embodiment Figure 4 is a schematic cross-sectional view showing the front end of the thermocouple, Figure 5 is a line diagram showing the temperature detected by the thermocouple, and Figure 6 is a schematic diagram showing the main part of the second embodiment of the present invention 7 is an enlarged cross-sectional view showing the joined state of the thermocouple tip portion in the second embodiment.

[0026] As shown in FIG. 1 , the electrode needle device according to the first embodiment includes: an electrode needle 1 for piercing an affected part of a living body, a first ...

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Abstract

A thermocouple (6) for detecting the temperature of the tip end of an electrode needle (1) is provided. The thermocouple (6) is provided with a tip end connecting portion (18) at which the tip ends of a pair of coated elemental wires (8, 9) are connected together electrically, and a tip end coating portion formed by coating the tip end connecting portion (18) with polyolefin synthetic resin. The tip end coating portion is bonded and fixed to the electrode needle (1). Accordingly, a medical electrode needle device is provided which is formed compact by providing a thermocouple to an electrode needle, and can very accurately detect temperatures by means of a thermocouple.

Description

technical field [0001] The invention relates to a medical electrode needle device for puncturing an affected part and carrying out thermocoagulation and homeotherapy through high-frequency current. Background technique [0002] Conventionally, there is an electrode needle device that thermally coagulates the tissue of the affected part by supplying a high-frequency current to the electrode needle pierced into the affected part of the living body (for example, refer to Japanese Patent Application Publication No. 2002-532186). [0003] Such an electrode needle device has an electrode needle whose tip is sharpened, and a high-frequency current is supplied to the electrode needle through electrically conductive lead wires connected thereto. The tip of the electrode needle is placed on the affected part, and the area around the tip of the electrode needle is heated by the supplied high-frequency current to thermally coagulate the tissue of the affected part. [0004] However, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/14A61B18/12
CPCA61B2018/00821A61B18/1477
Inventor 小林进山田秀彦饭田直之
Owner KK TOPCON
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