Vesicle-type serial expansion balloon for valves

Abstract

The present invention relates to the technical field of medical device implants, and in particular to a vesicle-type serial expansion balloon for a valve. The expansion balloon comprises a central catheter and multiple split balloons serially connected in sequence along the axis of the central catheter, and the insides of the multiple split balloons respectively communicate with the cavity of thecentral catheter; and the central catheter is connected with an external fluid delivery device, and the multiple split balloons are inflated or decompressed through the external fluid delivery device.The vesicle-type serial expansion balloon for the valve has a simple manufacturing process and low manufacturing cost, the structure can be used to successfully locate the position of an aorta, and further increase the internal pressure of the balloon to expand the deformed or narrowed valve and destroy valve calcification to restore the elasticity of the valve; and the original valve is pre-expanded to prepare for the replacement of an artificial valve, at the same time, the matching degree of compliance is extremely high, adverse effects caused by balloon over-expansion and balloon slidingare reduced, and the possibility of occurrence of complications or injuries can be reduced, and the expansion balloon is convenient to operate and can increase the success rate of surgery.

Description

technical field [0001] The invention relates to the technical field of medical device implants, in particular to an expansion balloon for a vesicular series valve. Background technique [0002] Aortic stenosis is a common cause of acquired heart disease. A large part of the root cause is calcification and stiffness of the valves, which restrict their ability to open and close, resulting in obstruction of the antegrade flow of blood through the heart. When valve leaflet sclerosis becomes severe, invasive measures such as aortic dilation or valve replacement are often required for treatment. The existing technology is mainly based on catheter-based minimally invasive balloon valvular dilation to expand the valve leaflets. The principle is that during the treatment process, a balloon catheter is inserted into a vein or artery and pushed until the heart valve that needs to be treated. Fluid is injected into the balloon to inflate the valve to expand the opening of the diseased...

AI Technical Summary

Problems solved by technology

The proximal and distal ends of the balloon in the prior art need to maintain non-compliance, and the middle needs to maintain semi-compliance. If different materials are used to make different parts of the integrated balloon, the connection method between different materials should be considered ; If the same material is used to make it, it is necessary to perform different treatments on different parts to produce different performances. The overall process is complex, with high requirements for process precision and high manufacturing costs.

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