Atrial septal defect plugging device knitted by degradable material

Abstract

The invention relates to an atrial septal defect occluder woven from degradable materials, which pertains to a medical apparatus technical field and comprises a bracket and membrane material inserted to the bracket and used for block blood from passing through; the bracket is made from degradable polymeric monofilament or degradable polymeric monofilaments together with shape memory alloy wires; the shape memory alloy wires are encircled outside a contour formed by the degradable polymeric monofilaments. In the atrial septal defect occluder, degradable polymeric material is adopted to completely or partially replace traditional Ni-Ti shape memory alloy. The atrial septal defect occluder of the invention is characterized by partial or complete biodegradability which means the atrial septal defect occluder can be partially or completely decomposed to small molecules innoxious to human body after being implanted in human body and then the small molecules are discharged from the human body so as to reduce reject reaction of human body and to improve the biocompatibility of interventional therapy materials.

Description

technical field

[0001] The invention relates to a device in the technical field of medical devices, in particular to an atrial septal defect occluder woven with degradable materials. Background technique

[0002] Congenital heart disease (hereinafter referred to as congenital heart disease) is a kind of cardiovascular disease that frequently occurs in children. Its lesion feature is that the septum between the left and right atrium cannot be closed normally after birth. Because the pressure of the left atrium is higher than that of the right atrium, under the action of pressure, the blood in the left atrium will flow to the right atrium through the defect, which will increase the burden on the right heart system and cause pathological changes. It is estimated that about 150,000 children with congenital heart disease are born in my country every year. At present, the treatment methods for congenital heart disease mainly include surgery and interventional therapy. However, s...

Images