Microwave tumor ablation instrument

Abstract

The invention provides a microwave tumor ablation instrument which comprises a microwave generation device, a power supply driving the microwave generation device to work, an ablation needle guiding microwave energy to an ablation structure, and a temperature measuring device used for detecting the temperature near the ablation structure. The instrument further comprises an anode current measuring device used for measuring the anode current value of the microwave generation device, and a fuzzy PID control device used for generating control signals according to the anode current value of the microwave generation device and controlling the phase angle of a phase control rectification device in the power supply so that the anode current of the microwave generation device can be equal to or close to a set value. The instrument effectively solves the technical problems that consistency of average power output by an existing microwave tumor ablation instrument is poor and / or instantaneous power consistency under the same average power is poor.

Description

technical field [0001] The invention relates to a tumor ablation instrument, more specifically, to a microwave tumor ablation instrument. Background technique [0002] Microwave ablation is a new and promising technology in the field of thermal ablation. It guides and irradiates the microwave energy generated by the microwave generating device to the lesion of the human body by means of various forms of microwave radiators. It will rotate and rub against non-polar molecules to generate heat and cause tissue necrosis. Water molecule is a kind of polar molecule, and the proportion of water molecule in human tissue is as high as 70%, so microwave is very suitable for tissue ablation. Compared with radiofrequency ablation technology, microwave ablation generates more power, so it can ablate a larger area of ​​tumor tissue at a faster speed. [0003] The good characteristics of microwaves have led more and more people to devote their energy to the research of microwave ablation...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a microwave tumor ablation instrument with lower fluctuation rate of instantaneous power and average power, so as to solve the poor consistency of output average power and / or poor consistency of instantaneous power under the same average power existing in existing microwave tumor ablation instruments technical issues

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