Electric surgery apparatus and method for controlling electric surgery apparatus

Abstract

The invention provides an electric surgery apparatus and a method for controlling the electric surgery apparatus. A high-frequency ablation power supply (2) is an electric surgery apparatus for bonding biological tissues. The electric surgery apparatus includes a high-frequency power supplying section for supplying a high-frequency power which is applied to biological tissues, a detecting section for detecting the voltage and current of the high-frequency power outputted from the high-frequency power supplying section, an impedance calculating section for calculating from the voltage and current values detected by the detecting section the impedance between a pair of electrodes (3a) which holds the biological tissues and to which the high-frequency power is supplied, and a control section (18) for controlling the supply and substantial stop of the high-frequency power from the high-frequency power supplying section depending on whether or not the impedance calculated by the impedance calculating section has exceeded a predetermined value twice.

Description

technical field [0001] The present invention relates to an electrosurgical device for treating living tissue and a control method for the electrosurgical device, and more particularly, to an electrosurgical device for joining living tissue and a control method for the electrosurgical device. Background technique [0002] Conventionally, electrosurgical devices have been widely used in surgical operations and the like. The electrosurgical device is used, for example, in surgical operations for incision of living tissue and jointing of incised living tissue. [0003] Specifically, a treatment instrument connected to a high-frequency power supply is brought into contact with living tissue to be treated, and high-frequency power is supplied to the treatment instrument from the high-frequency power supply, thereby incising and joining the tissue to be treated. [0004] Conventionally, various such electrosurgical devices have been proposed. For example, in Japanese Patent Appli...

AI Technical Summary

Problems solved by technology

Therefore, if the water molecules used for hydrogen bonding disappear, tissue bonding with uniform cautery can be achieved, but in conventional devices, the high-frequency output is stopped only when the impedance rises, that is, increases

[0006] When high-frequency power is applied to living tissue, the tissue impedance temporarily decreases; afterward, as the tissue dries, air enters the tissue, whereby the tissue impedance rises sharply, but there are cases where the tissue does not become dehydrated

[0007] Therefore, in the conventional device, the dehydration state of the living tissue is not detected, so the bonding force of the living tissue may be weak

In addition, it is also possible to simply perform high-frequency output for a long time, but there is a problem that the operation time becomes unnecessarily long.

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