Perfusion balloon catheter with one-way valve

Abstract

The invention provides a perfusion balloon catheter with a one-way valve. The perfusion balloon catheter comprises a balloon body part; the balloon body part comprises an inner cavity tube and a plurality of balloons arranged around the outer surface of the inner cavity tube; far-end balloon tube legs of the multiple balloons are in contact with the tube wall of the inner cavity tube; and the one-way valve is arranged between the inner cavity tube and the balloon part of the balloon. Compared with the prior art, the balloon body part of the perfusion balloon catheter is formed by bundling the multiple balloons, and a hollow quasi-cylindrical shape is formed after expansion; meanwhile, the one-way valve is arranged in the cavity and used for simulating valve leaflets in a heart valve and conducting one-way blood perfusion, after the balloons are opened, the one-way valve is started, opening and closing operation is not needed, the structure is stable, and the valve leaflet function can be achieved repeatedly; and in addition, through the design of the bundling balloon, the expected function can be met, and meanwhile, the difficulty of the balloon forming process is lowered.

Description

technical field [0001] The invention belongs to the technical field of balloon catheters, in particular to a perfusion balloon catheter with a one-way valve. Background technique [0002] In vertebrates, the heart is a muscular organ with four compression chambers: left and right atrium, and left and right ventricle, each with its own independent one-way valve. Natural heart valves are defined as aortic valve, mitral valve (or mitral valve), tricuspid valve, and pulmonary valve. Since the aortic valve or mitral valve is located on the left side of the heart, it bears the greatest pressure. Therefore, during long-term work, the function of the valve leaflets will be lost, and it needs to be repaired or replaced. Traditional prosthetic heart valve replacement procedures involve accessing the heart within the patient's chest cavity through a longitudinal incision in the chest, such as a median sternotomy, which requires cutting the sternum and forcing the two opposing halves o...

AI Technical Summary

Problems solved by technology

However, on the one hand, this design adds components to the surface of the balloon catheter, which increases the outer diameter and hardness of the balloon part of the balloon catheter, resulting in poor passability of the balloon catheter; on the other hand, whether it is a thin film or a The helical cover, due to its soft material properties, cannot withstand repeated one-way blood impacts, and the risk of treatment failure is high. Once the balloon catheter loses the function of the one-way valve, the patient may have an important arterial artery at any time. Occlusion, causing a large area of ​​heart, kidney, brain and other important organs of blood supply disorder, is extremely dangerous and seriously endangers the life safety of patients.

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