Output control method and device of radio frequency ablation power, and radio frequency ablation system

Abstract

The invention provides an output control method and device of radio frequency ablation power, and a radio frequency ablation system. The output control method of radio frequency ablation power comprises the following steps: when a starting signal is received, controlling a radio frequency energy generator to output a preset ablation power, recording the ablation time and obtaining actual ablationparameters, wherein the actual ablation parameters comprise actual impedance; when the actual impedance meets any one of a first preset condition and a second preset condition, controlling the radio frequency energy generator to stop output of the ablation power, recording the sleep time and stopping recording the ablation time; and if the sleep time exceeds a sleep time threshold value, controlling the radio frequency energy generator to continue to output the ablation power again, and continuing to record the ablation time. The first preset condition is R>K1*Rmin1, and the second preset condition is R>K2*Rmin2. The method can enable the impedance of an ablation part to be in an intermittent stable change state, and continuous output of the radio frequency energy can be ensured, so that radio frequency ablation can be relatively and uniformly carried out in a circulating mode.

Description

technical field [0001] The present application relates to the field of medical technology, and in particular to a method and device for controlling output of radiofrequency ablation power, a radiofrequency ablation system, and a computer-readable storage medium. Background technique [0002] At present, as an emerging technology in the medical field, radiofrequency ablation technology has been applied in the treatment of tumor diseases and neurological diseases. The main mechanism of radiofrequency ablation is the thermal effect. When the radiofrequency current passes through the human diseased tissue, the high-frequency current causes the charged positive and negative ions in the diseased tissue to undergo high-speed oscillating motion, and the high-speed oscillating ions generate a large amount of heat due to friction, making the temperature The increase will eventually cause protein denaturation in the diseased cells, loss of water in the cells, and coagulation necrosis o...

AI Technical Summary

Problems solved by technology

[0003] During the ablation process, with the gradual drying of the tissue around the ablation electrode, the impedance of the tissue changes. If the temperature of the tissue around the ablation electrode is too high and rises too fast, the tissue near the ablation electrode will be carbonized, causing a sharp increase in impedance And produce "scab" phenomenon, leading to early stop of ablation, affecting the effective range of ablation, making ablation incomplete, greatly affecting the effect of ablation treatment

In addition, the ablation temperature is too high and the impedance changes rapidly, which is not good for the normal tissues around the ablation site.

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