Frequency controllable multi-source radiofrequency ablation system

Abstract

The invention belongs to the technical field of medical electronics, and particularly relates to a multi-source radio frequency ablation system based on controllable frequency. The system comprises amulti-source radio frequency voltage generator with controllable frequency, a multi-pole ablation catheter and a reference polar plate; the multi-source radio frequency voltage generator comprises a multi-source radio frequency power generator, multi-source radio frequency current and voltage sensors, a radio frequency electric parameter detection module, a multi-way high-speed ADC module and a processor / controller; the multi-source radio frequency voltage generator outputs multi paths of radio frequency voltages with frequency differences and applies the radio frequency voltages to a biological tissue through the multi-pole catheter; the reference polar plate is tightly attached to the body surface as a reflux end of the multi-source radio frequency voltages. The system can rapidly achieve linear damage, annular damage, box type damage, cross damage and point damage and the like on the biological tissue. The system provides a new scheme for the control of the size and shape of the radio frequency ablation damage of the clinical atrial fibrillation, and overcomes the defect that a prior single-path cardiac radio frequency ablation system is difficult in rapidly forming continuous damages.

Description

technical field [0001] The invention belongs to the technical field of medical electronics, and specifically relates to a multi-source radio frequency ablation system with controllable frequency, which can quickly realize the effects of continuous ablation damage, multi-point discrete damage or single-point discrete damage on biological tissues. Background technique [0002] Atrial fibrillation is a common arrhythmia in clinical practice. Atrial fibrillation and its complications seriously affect human life, health and quality of life. According to statistics, the current incidence of atrial fibrillation among adults in my country is about 0.77%, and that of people over 80 years old reaches 7.5%. Studies have shown that the ectopic excitatory focus in the pulmonary vein muscle sleeve is an important source of the occurrence and maintenance of atrial fibrillation. Therefore, the use of radiofrequency energy to isolate the abnormal excitation conduction path between the pulmo...

AI Technical Summary

Problems solved by technology

At present, most of the traditional single-channel cardiac radiofrequency ablation devices are used in clinic to perform radiofrequency ablation of the atrium with a unipolar ablation catheter, which has the following disadvantages: the existing single-channel cardiac radiofrequency ablation system usually only connects between the intracardiac ablation electrode and the external reference electrode Release a single channel of radiofrequency current, and each discharge can only produce one point-like injury, resulting in low ablation efficiency

The existing single-channel cardiac radiofrequency ablation system is difficult to form continuous ablation lesions, and ablation gaps are prone to appear between the two ablation targets, resulting in incomplete isolation of the peripheral pulmonary veins and a decrease in the success rate of atrial fibrillation treatment

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