Balloon Catheters and Electrophysiology Systems

Abstract

The invention relates to a balloon catheter and an electrophysiological system, and aims at improving the operability of precisely monitoring the balloon surface temperature on the surface of a dual-layer balloon. The balloon catheter comprises a catheter body, the dual-layer balloon, at least one temperature measuring element and at least one sucking part, the temperature measuring elements are arranged in a sandwiched layer formed by an inner-layer balloon body and an outer-layer balloon body, the sucking parts are connected with the temperature measuring elements, and are in sucking connection with the inner-layer balloon body or the outer-layer balloon body, and the temperature measuring elements are attached to the inner-layer balloon body or the outer-layer balloon body through the sucking parts; when the dual-layer balloon is deformed, the sucking parts can make displacement relative to the inner-layer balloon body or the outer-layer balloon body which is connected with the sucking parts, and the temperature measuring elements can also make displacement relative to the inner-layer balloon body or the outer-layer balloon body connected with the sucking parts.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a balloon catheter and an electrophysiological system. Background technique [0002] Patients with atrial fibrillation have a high risk of stroke. When atrial fibrillation occurs, the atrium beats irregularly and rapidly, losing its systolic function, and blood easily stagnates in the atrium to form a thrombus. stroke. The therapeutic effect can be achieved by applying energy to the pulmonary vein through the interventional catheter to isolate the potential of the pulmonary vein. Hypertension has the characteristics of high incidence rate, low awareness rate and great harm. Experimental data have proved that hypertension is related to the high excitability of renal sympathetic nerve in patients. Blocking renal sympathetic nerves by ablation can not only lower blood pressure, but also have an impact on chronic organ-specific diseases caused by excessive activation of sy...

AI Technical Summary

Problems solved by technology

Generally, myocardial tissue can only form an effective ablation lesion when the low temperature reaches a sufficient time. For this reason, a temperature measuring element is installed inside the cryoablation balloon catheter, and the temperature measuring element is placed in the middle of the balloon to monitor the temperature of the balloon. The internal temperature of the balloon is used to estimate the temperature of the balloon surface, but there may be a large deviation between the estimated balloon surface temperature and the actual temperature, resulting in low accuracy of the balloon surface temperature, which directly affects the ablation effect

[0004] The prior art has tried to install a temperature measuring element on the surface of the balloon to monitor the temperature of the balloon surface, but this requires high operability, and there is no effective method in the prior art, which can not only place the temperature measuring element Fixed on the surface of the balloon, and can prevent the expansion and contraction of the balloon from being affected

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