Low-temperature plasma ablation power control method and system

Abstract

The invention discloses a low-temperature plasma ablation power control method and system, and relates to the technical field of ablation medical instruments. The control method comprises the following steps of according to a stimulation medium characteristic parameter, calculating energy average output power required for maintaining a plasma thin layer with the set thickness and energy optimal instantaneous output power required for exciting a plasma; generating a pulse power signal based on the average output power and the instantaneous output power; and detecting the excitation state of theplasma, controlling the output state of a pulse power signal according to the excitation state, and converting the power output mode of a radio frequency energy output unit in a plasma ablation instrument into pulse power output from constant power output. The excitation time of the plasma at the end of an ablation electrode is effectively shortened under the premise of ensuring the safety, and the excitation efficiency is improved. Through pre-parameter storage setting, a user can quickly adjust to obtain appropriate instantaneous output power in the ablation operation process. The method isefficient, convenient and high in reliability.

Description

technical field [0001] The present invention relates to the technical field of ablation medical equipment, more specifically, it relates to a low-temperature plasma ablation power control method and system. Background technique [0002] In the field of medicine, plasma radio frequency ablation technology has been widely used. Plasma ablation technology uses ultra-low frequency radio frequency energy of 100~120KHz to excite the medium (NaCl) to generate plasma, and the energy generated by radio frequency technology breaks molecular bonds and dissolves proteins. and other biomacromolecules are directly cracked into O 2 , CO 2 , N 2 and other gases, so as to complete various operations such as cutting, punching, ablation, shrinking and hemostasis of tissues. [0003] The key to complete the above treatment by using the plasma radiofrequency ablation system is the excitation of the plasma. In the prior art, the stable electric field of 100KHz ultra-low frequency is used to ex...

AI Technical Summary

Problems solved by technology

But, according to the enlightenment of prior art, in order to obtain high-speed plasma in a short time, it is necessary to increase the electric field energy in the plasma thin layer, for example, increase the frequency of radio frequency energy, such as increasing to 500KHz, and the improvement of the above frequency will Make the ions in a state of reciprocating motion, accelerate molecular friction and produce a strong thermal effect, which is easy to cause damage to normal human tissues during treatment

Images