Artificial valve displacement device and stent

Abstract

The invention discloses a stent of an artificial valve displacement device. The stent is in a mesh cylindrical structure formed by an aorta stent, a valve stent and an outflow channel stent which are sequentially connected. Three hollow-out areas are distributed on the side wall of the valve stent and respectively correspond to the top ends of three valves during opening. At least two fixed lugs are arranged on the top edge of the aorta stent. The heights of the top edges of the fixed lugs are different from each other. The shape of a hollow-out area is round, oval or diamond. The artificial valve displacement device can be used for displacing a pathological heart valve without a surgical operation, passes through blood vessels during displacement and is transplanted into the heart through femoral artery; and the heart and the aorta are incised without the operation. It is convenient to transplant, has long service life and favorable positioning effect, not only reduces the difficulty of the operation, but also realizes the recovery.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to an artificial valve replacement device. Background technique [0002] When the patient's own heart valve is mutated due to congenital or acquired diseases, causing the valve to fail to open and close normally, it will affect healthy life and even life. The variation of the heart valve can be divided into insufficiency and insufficiency, both of which can cause increased heart load. Whether the heart can still work normally under this load is the main basis for deciding whether the human heart valve should be replaced. [0003] When the patient needs to replace the valve, the existing method is to use surgery to replace the valve. The doctor will open the patient's chest and stop the heart, and connect it to the extracorporeal cardiopulmonary circulation system. Then open the patient's heart to remove the diseased heart valve, then suture the artificial replacement va...

AI Technical Summary

Problems solved by technology

[0009] However, the delivery device in the prior art only needs to rely on the guide head to contact the inner wall of the blood vessel when it is inserted into the blood vessel of the human body, and the turning is realized under the obstruction of the inner wall of the blood vessel, but this may cause damage to the inner wall of the blood vessel or organ. scratched or damaged

Not only that, after the artificial valve replacement device is released, because the artificial valve replacement device will expand under the action of body temperature, once it is found to be in place or the position is deviated, it cannot be dealt with, and it is difficult to achieve position adjustment or second place. This not only requires extremely high control precision during surgery, but also has certain risks.

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