Ablation focus evaluation method and system

Abstract

The invention relates to an ablation focus evaluation method and system, which are used for analyzing intracardiac electrode signals fed back by electrodes attached to an ablation focus to obtain ablation information. The method includes the following steps that: a baseline calculation unit of the ablation focus evaluation system calculates the proportion of a signal curve above a baseline to allintervals of the signal curve by generating the baseline of the signal curve, a waveform comparison unit compares the signal curve with an ablation template to obtain a waveform comparison result, anda judgment unit judges the proportion and the waveform comparison result and outputs the ablation information about whether ablation is completed. According to the ablation focus evaluation method provided by the invention, the ablation information about whether the ablation is completed can be obtained by using the ablation focus evaluation system, in cardiac radiofrequency ablation operations such as pulmonary vein isolation, doctors can conveniently understand the ablation and transmural situations in real time, and thus the success rate and safety of the cardiac radiofrequency ablation operations can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a method and system for evaluating an ablation lesion. Background technique [0002] Arrhythmia (arrhythmia) is due to abnormal sinoatrial node excitation or excitation outside the sinoatrial node, the conduction of the excitation is slow, blocked or conducted through abnormal channels, that is, the origin of cardiac activity and / or conduction disorders lead to the frequency and And / or abnormal rhythms, such as atrial fibrillation (AF, or atrial fibrillation), which is a rapid heart rhythm disorder caused by abnormal electrical signals. [0003] At present, cardiac radiofrequency ablation has been widely carried out in the field of treating arrhythmia diseases. The mechanism of this surgical method is to ablate the tissue that generates abnormal electrical signals with different energies, cut off the path of abnormal electrical signals, or destroy the abnormal tissue, ...

AI Technical Summary

Problems solved by technology

Studies have found that if there is no effective circular isolation of the ablation tissue, even a small gap (ie, a leak point, gap) of 1 mm in the circular line around the pulmonary vein may cause the electrical reconnection of the ablation tissue, resulting in atrial fibrillation. tremor recurrence, or iatrogenic atrial arrhythmia; however, if the energy generated by ablation is too much, it will cause damage to other organs of the patient, such as the esophagus and phrenic nerve, and may also lead to cardiac perforation

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