Leg type lower limb artificial vein valve

Abstract

An artificial scaffold-type venous valve for treating the revese flow phlebocholosis of lower extremity and phlebostenosis is composed of the artificial vein with the said artificial valve on its inner surface and the metallic scaffold attached to outer surface of artificial vein. Its advantages are high tissue compatibility, and low cost.

Description

technical field [0001] The invention relates to the technical field of medical devices, and relates to a stent-type lower limb artificial venous valve for treating lower limb reflux phlebopathy. Background technique [0002] Lower extremity reflux phlebopathy is a common disease at home and abroad, and the prevalence rate of people over 15 years old in China can reach 8.4%. The primary factor of the disease is the structural destruction and insufficiency of the venous valves of the lower extremities. The function of normal lower extremity venous valves is that when the human leg muscles contract or the lower limbs are raised, the lower extremity venous valves open and the venous blood returns to the heart. Distal reflux. However, if the structure of the venous valves of the lower extremities is damaged and the function is incomplete, there will be abnormal backflow of venous blood in the lower extremities, causing venous hypertension in the distal ...

AI Technical Summary

Problems solved by technology

However, due to the need to resect the diseased vein segment and perform vascular anastomosis when replacing the valve, the surgical trauma is large and the interference to the adjacent vein segment is large, so there are many complications after surgery.

In addition, it is difficult to find an autologous venous valve, which requires additional surgical trauma, and allogeneic and heterogeneous venous valves have antigenic reactions, so the actual treatment effect is poor

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