To provide an improved coagulation method and an improved coagulation device.
First, a maximum high frequency current is introduced into a tissue at a prescribed, preferably, constant maximum coagulation voltage. In this initial state, the tissue performs behavior complying with Ohm's law, and absorbs maximum energy per unit time. When changing from the initial state to a state where the impedance of the tissue, i.e., tissue resistance XR depends on a voltage, a high frequency parameter is selected such that maximum energy input allowed per unit time to the new tissue state can be obtained. Therefore, preferably, the tissue resistance is maintained to a value lower than initial impedance. Accordingly, a controller restricts the tissue resistance to the value lower than the initial impedance or a value lower than the achieved lowest impedance of the tissue. When a specific energy amount is input, operation is automatically stopped by optional selection. The restriction of energy input can be executed as the need arises.
| JP5036231 | Medical equipment |
| WO/2023/284539 | MESH BASKET-SHAPED ELECTRODE FOR ABLATION |
| JP2012217856 | SYSTEM AND METHOD FOR PROCESS MONITORING AND INTELLIGENT SHUT-OFF |
| JP2010158526A | 2010-07-22 | |||
| JP2002325772A | 2002-11-12 | |||
| JP2008114042A | 2008-05-22 |
Kato Kazunori
Katsuichi Nishimoto
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