Seamless aortic valve replacement device

Abstract

The invention provides a seamless aortic valve replacement device implanted under surgical orthophoria. The seamless aortic valve replacement device is characterized by comprising a metal support, a terylene ring, a joint tab and an artificial valve, wherein the metal support comprises a support inflow end, an oar-shaped support part and a support outflow end, wherein the oar-shaped support part is connected with the support inflow end and the support outflow end respectively; the terylene ring is fixed at the support inflow end; the joint tab is fixed at the oar-shaped support part; and a near end of the artificial valve is fixed on the inner side of the terylene ring, and a far end of the artificial valve is fixed on the inner side of the joint tab. According to the seamless aortic valve replacement device, the whole height of the device can be effectively reduced; and at the same time, large-area circular terylene is seamed at the support inflow end, fixation of the whole device in a left ventricle outflow tract is enhanced, and integrated expansion is facilitated, so that the inflow end and the outflow end of the metal support can be well anchored an aorta wall, and the occurrence rate of complication of valve displacement, perivalvular leakage, atrioventricular block and the like is decreased.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a device for replacing aortic valve without suture implanted under direct vision of surgery. Under the support of extracorporeal circulation, the diseased aortic valve is cut off, and the aortic valve without suture is implanted in the corresponding position. The extracorporeal circulation can be withdrawn and the operation can be completed. Background technique [0002] Degenerative aortic valve disease refers to the degeneration and fibrosis of the aortic valve connective tissue with age on the basis of the original normal valve or mild valve abnormality, and the valve thickens, hardens, deforms and calcium Salt deposits, causing valve stenosis and / or insufficiency. Aortic stenosis (Aortic Stenosis, AS) has become a relatively common heart valve disease, and its incidence gradually increases with age. In recent years, AS has become one of the main causes of heart failur...

AI Technical Summary

Problems solved by technology

[0012] In summary, the existing seamless aortic valve has the following deficiencies: ① the Dacron flange at the inflow end is difficult to completely fix the aortic valve to the aortic annulus; ③The design of the stent at the inflow end cannot fully fit the aortic valve ring; ④The height of the aortic valve is too high, which may easily cause atrioventricular block and valve displacement; ⑤The design of the stent at the outflow end is too complicated, making it difficult fully unfolded and increases manufacturing difficulty

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