Intracardiac mapping catheter

Abstract

The invention discloses an intracardiac mapping catheter. The intracardiac mapping catheter comprises a socket for providing a power supply, wherein a locking piece is fixed at one end of the socket; one end, far away from the socket, of the locking piece is connected with a high polymer material pipe; a stainless steel pipe with one end connected to the socket is inserted into an inner cavity formed by the high polymer material pipe and the locking piece; one end, far away from the high polymer material pipe, of the stainless steel pipe is connected with a head end pipe; a support body is formed at the top end, far away from the stainless steel pipe, of the head end pipe; the support body is spiral; the support body is provided with a far end connected with the head end pipe and a near end spirally extending towards the stainless steel pipe around the pipe body of the head end pipe; a thermocouple is arranged at the end part of the near end; the diameters of a plurality of spiral rings formed in the direction from the far end to the near end of the support body are sequentially increased; a plurality of ring electrodes are arranged on the periphery of the support body in a sleeving manner; the periphery of the support body is wrapped with an insulating layer; the thermocouple and the plurality of ring electrodes are electrically connected to an interface of the socket respectively. The intracardiac mapping catheter is better in pulmonary vein ablation performance and safer to use.

Description

technical field [0001] The invention relates to an intracardiac mapping catheter. Background technique [0002] At present, for patients with paroxysmal atrial fibrillation, the ablation strategy of implementing circular pulmonary vein ablation with the end point of pulmonary vein isolation has been accepted by various electrophysiological centers and has become the main and cornerstone procedure. Catheter ablation is currently the most widely used method in China. Catheter ablation can be divided into two types according to different ablation energy sources: radiofrequency ablation and cryoablation. The purpose of the two is to isolate the myocardial tissue or bypass that interferes with the normal electrical activity of the heart, and restore the normal conduction of the heart. The difference is that the former uses electrocautery to ablate the target cells to degeneration and necrosis, and the latter absorbs the tissue through the evaporation of refrigerant. A lot of he...

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Problems solved by technology

[0003] However, the currently widely used intracardiac mapping electrode catheter has structural and functional defects at the head end, which cannot effectively support and cannot approach the balloon at a closer distance, so that it cannot accurately map the position in the heart. There is no temperature measurement system on the market. If the temperature is too high or too low, it will damage human tissues. Real-time temperature monitoring cannot be achieved, which increases the uncertainty and complexity of the operation.

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