Heart bioprosthetic valve with valve leaflet capable of being repeatedly replaced through minimally invasive surgery

Abstract

The embodiment of the invention discloses a heart bioprosthetic valve with a valve leaflet capable of being repeatedly replaced through a minimally invasive surgery. The heart bioprosthetic valve comprises a valve support (1) and the replaceable valve leaflet (2), wherein the valve support (1) is used for being sewed with the tissue, and the valve support (1) and the replaceable valve leaflet (2) are in tight connection through a clamping groove (3) and a sealing groove (4) in the valve support (1). When the heart bioprosthetic valve is implanted in a patient through a thoracic surgery, the function of the valve leaflet degenerates, and the heart bioprosthetic valve is required to be replaced, through the minimally invasive surgery, a conveying device with a new valve leaflet can be guided by a visualization device to take down the damaged valve leaflet by a valve leaflet removing device of the conveying device, meanwhile, the new valve leaflet is expanded to be installed on the valve support to complete replacement of the valve leaflet, the damaged valve leaflet can be compressed to be installed in the conveying device which is pulled out of the human body, and replacement of the heart bioprosthetic valve is finished. According to the heart bioprosthetic valve, the risk of huge traumas caused by the fact that the thoracic surgery is required to be carried out on the patient again to replace the heart bioprosthetic valve due to the reason of the service life after the heart bioprosthetic valve is implanted in the human body is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, and more specifically relates to a heart biological valve which can repeatedly replace valve leaflets through minimally invasive surgery. Background technique [0002] Heart valve disease is one of the most common heart diseases in my country. At present, the most effective treatment method is valve replacement through surgery. There are two commonly used replacement devices: mechanical valve and biological valve. The replacement operation needs to be performed under cardiac arrest and extracorporeal circulation. The operation time is long, the blood loss is large, and the damage to the patient is relatively large. In recent years, foreign countries have developed interventional heart biological valves through apical puncture or femoral artery puncture for elderly patients who cannot bear the huge trauma of surgery. At present, Edwards' SAPIEN balloon-expandable aortic valve and Medtronic...

AI Technical Summary

Problems solved by technology

[0003] The above three types of heart valves have their own advantages and disadvantages: mechanical valves are durable and do not need to be replaced, but they are prone to thrombosis after implantation in patients, so they need to take anticoagulant drugs for life. Complications such as bleeding have brought many safety hazards to the health of patients

However, in the solution disclosed in this invention, the connection point between the valve frame and the leaflets is at the bottom of the valve frame and protrudes inward. When the blood passes through the valve, the protruding part will change the hemodynamic state, and at the same time, blood cells will be in contact with each other. Hemolysis resulting in the rupture of blood cells

There is no effective fixed point between the apex of the leaflet and the leaflet frame, which will cause the shape of the leaflet to be deformed during long-term operation, which will accelerate the damage of the leaflet and affect its service life

Images