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Power generating and monitoring circuit of radio frequency melting therapeutic system

A treatment system and radio frequency ablation technology, which is applied in the circuit field of the tumor ablation treatment system, can solve the problems of high power supply voltage, low calculation accuracy, complex circuit, etc., and achieve the effect of simple circuit, high measurement accuracy, and convenient debugging

Inactive Publication Date: 2005-03-02
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of high feed power supply voltage, low efficiency, complex circuit, and low precision of output power and load impedance measurement in low power state are caused.

Method used

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  • Power generating and monitoring circuit of radio frequency melting therapeutic system
  • Power generating and monitoring circuit of radio frequency melting therapeutic system
  • Power generating and monitoring circuit of radio frequency melting therapeutic system

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Embodiment Construction

[0017] Further detailed description is made below in conjunction with accompanying drawing:

[0018] Such as figure 1 As shown, the present invention is composed of unit circuits such as an excitation signal generator, a series resonant power amplifier circuit, an active low-pass filter, a controllable DC power supply, a voltage detection circuit and a current detection circuit. The output end of the excitation signal generator is connected to the input end of the series resonant power amplifier circuit. The input end of the active low-pass filter is connected with the intelligent monitoring system, and its output end is connected to the control input end of the controllable DC power supply. The voltage output terminal of the controllable DC power supply is connected to the feed input terminal of the series resonant power amplifier circuit. The signal output terminal of the series resonant power amplifier circuit is connected with the ablation electrode terminal of the load,...

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Abstract

The power generating and monitoring circuit for use in biomedicine engineering and technology consists of exciting signal generator, serial resonant power amplifier circuit, active low-pass filter, controllable DC power source, voltage detecting circuit and current detecting circuit connected together. It is connected with intelligent monitoring system, and the output of the serial resonant power amplifier circuit is connected to the melting electrodes as load. The present invention has simple circuit, convenient regulation, high work efficiency, flexible control, and high measuring and calculating precision of the output power and load impedance.

Description

technical field [0001] The invention relates to a circuit for a tumor ablation treatment system in the technical field of biomedical engineering, in particular to a power generation and monitoring circuit for a radio frequency ablation treatment system. Background technique [0002] Radiofrequency ablation based on the biothermal effect of radiofrequency electromagnetic fields, that is, radiofrequency in situ inactivation, has been widely used in tumor treatment, cardiothoracic surgery, neurosurgery, gynecology and urology, and various corresponding medical equipment, such as water-cooled Radiofrequency tumor ablation treatment system, multi-bullet tumor radiofrequency ablation instrument, atrial fibrillation radiofrequency ablation treatment instrument, etc. have appeared in large numbers. In the process of radiofrequency ablation, it is very important whether the output power of the radiofrequency ablation treatment system is appropriate. If it is too low, the purpose of a...

Claims

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Application Information

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IPC IPC(8): A61B18/12A61B18/18
Inventor 陈亚珠白景峰冯学苏
Owner SHANGHAI JIAO TONG UNIV
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