A highly stable and adaptively adjustable atrial shunt device

Abstract

The invention discloses a high-stability type atrial shunting device with a self-adaptive adjustment function. A left atrial disc surface and a right atrial disc surface are integrally connected through a connecting column. The left atrial disc surface and the right atrial disc surface are provided with a left atrial shunting port and a right atrial shunting port in the upper and lower ends of theconnecting column respectively, and the connecting column is internally provided with a through hole. The inner walls of the left atrial shunting port and right atrial shunting port are provided withopening restraining filaments. The high-stability type atrial shunting device with the self-adaptive adjustment function can offset the reduction of the size of a shunting hole caused by endothelialization of cells at the shunting hole and achieve pressure balance of the left and right atriums. The invention also discloses a tightness adjustment driving device used for intervention of the high-stability type atrial shunting device with the self-adaptive adjustment function. The end, close to a limiting cylinder, of a rotating groove is provided with a rotating cavity, and the structural sizeof the inner wall of the rotating cavity is the same as that of the outer wall of a rotating head. The atrial shunting device is simple in structure and convenient to operate and use and can adaptively adjust the length of the opening restraining filaments so as to achieve adjustment of the size of the shunting hole.

Description

technical field [0001] The present invention relates to the technical field of structural design of medical devices used in the treatment of heart failure, in particular to a high-stability self-adaptively adjustable atrial shunt device and a high-stability self-adaptively adjustable atrial shunt device for intervening and tightening driving device . Background technique [0002] Heart failure (heart failure) is the final result of various cardiovascular events and the cumulative effect of various cardiac abnormalities, which ultimately leads to a decline in the pumping function of the heart. Once the clinical manifestations of heart failure appear in cardiovascular patients, the prognosis is poor. The more severe the heart failure, the higher the risk of death. Heart failure is a group of complex clinical syndromes caused by abnormal changes in the structure and function of the heart caused by various reasons. difficulty, fatigue) and fluid retention (pulmonary congestio...

AI Technical Summary

Problems solved by technology

[0004] However, in the shunt devices in the prior art, as time goes by, the shunt hole in the center of the shunt device is endothelialized, resulting in the shunt hole being no longer smooth, or even completely closed, and losing the balance of left and right atrial pressure. Function

Although there are drugs that inhibit endothelialization such as rapamycin and paclitaxel in existing medical devices, the inhibitory effect is poor if the drug is used in a small amount; if the drug is used too much, it will have serious side effects on the patient's heart

Can only choose to use a small dose of drugs, resulting in a short life of the shunt device. During long-term use, the patient needs to undergo a second operation, which affects the therapeutic effect

[0005] It can be seen that in the prior art, due to the limitation of the structure of the shunt device, the size of the shunt hole established between the left atrium and the right atrium is fixed; Repatency, or even complete closure, loss of balance of left and right atrial pressure functional defect

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