Cold saline perfusion ablation catheter system

Abstract

The invention provides a cold saline perfusion ablation catheter system. The cold saline perfusion ablation catheter system comprises a cold saline perfusion ablation catheter, a radio frequency instrument and a perfusion pump, wherein the radio frequency instrument is coupled to the catheter to provide radio frequency pulse energy; the perfusion pump is connected to the catheter, and is used for conveying cold saline according to at least one of set flow, accumulated flow and flow-time sequence. The cold saline perfusion ablation catheter system is characterized in that the perfusion pump comprises a refrigerating component for refrigerating the cold saline according to a set temperature. In the system, the perfusion pump has an automatic refrigerating function, so that the conventionally-applied normal saline can be refrigerated to a proper low temperature; low-temperature cold saline is perfused during ablation, so that an ablation electrode can be flushed more effectively, the surface temperature of the electrode is better lowered, sufficient inflation energy can be applied, and the melting depth can be increased more effectively. Moreover, the cold saline perfusion ablation catheter in the system can be commercial-available cold saline perfusion ablation catheters of various models directly, and only the radio frequency instrument and the perfusion pump need to be improved, so that the manufacturing cost of the whole system is reduced, and the production difficulty is lowered.

Description

technical field [0001] The present invention relates to a cold saline perfusion ablation catheter system, more specifically, a catheter mainly used for radiofrequency ablation and cold saline perfusion in human vessels, a radio frequency instrument for providing radio frequency pulse energy, and a device for delivering cold saline The ablation catheter system is perfused with cold saline composed of perfusion pump coupling. Background technique [0002] Radiofrequency ablation catheter is a commonly used electrophysiological catheter. It is often used to treat arrhythmia, heart failure, paroxysmal atrial fibrillation and other diseases. For example, it can be used to perform renal artery denervation and pulmonary artery denervation for different diseases. Ablation etc. This method of treatment avoids the patient's pain of chest opening, can cure the disease radically, and will not cause any serious complications, so it has been widely used clinically at home and abroad. ...

AI Technical Summary

Problems solved by technology

[0011] It can be seen from the above that in the prior art, cold saline at normal temperature is generally used, and the temperature of cold saline is not realized according to the lesion condition of the specific target tissue and the requirements of ablation depth. Therefore, it often occurs during ablation. Because the cooling effect of cold saline perfusion is insufficient, in order to avoid the temperature being too high, the applied ablation energy is insufficient and cannot provide sufficient ablation depth, thus affecting the therapeutic effect of ablation

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