Steep pulse electric field ablation control system

Abstract

The invention discloses a steep pulse electric field ablation control system which comprises a pulse electric field control part and an ultrasonic imaging part, and the pulse electric field control part and the ultrasonic imaging part carry out data interaction through a communication interface. According to the invention, a steep pulse electric field with high electric field intensity, fast pulse frequency and short pulse width can be provided. The steep pulse electric field of non-thermal energy ablation only causes irreversible electroporation to cells and does not cause protein denaturation, so that the thrombus risk in the ablation process is reduced to a great extent. Besides, the pulse sequence of any combination can be accurately controlled to be output, so that a time window of the cardiac refractory period is effectively adapted, and the adverse effect of the ablation process on the effective refractory period is avoided.

Description

technical field [0001] The invention relates to a steep pulse electric field ablation control system, which belongs to the technical field of interventional medical instruments. Background technique [0002] At present, as a typical representative of minimally invasive surgery, ablation has been widely used in various diseases such as hypertension, ventricular or supraventricular arrhythmia bypass, abnormal cardiac structure, and skin diseases. value is fully affirmed. In the prior art, a common ablation method is to deliver ablation energy to the tissue in the ablation area (ie, the lesion) through a catheter. The energy sources used for ablation mainly include radiofrequency, cryo, ultrasound, and laser ablation. However, these ablation techniques based on heat and cold conduction have certain limitations, such as the lack of selectivity in the destruction of the tissue in the ablation area, and the reliance on the ablation catheter's ablation force, so it is easy to dama...

AI Technical Summary

Problems solved by technology

The system outputs pulses within 50ms to 200ms after recognizing the R wave of the ECG. The time window of the output pulses is fixed, and the calculation of the cardiac refractory period is not performed for a specific individual. When the acceleration becomes faster, the output pulse of the system will also become faster, further aggravating this adverse reaction, unable to effectively judge and make timely feedback, and there are potential safety hazards

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