Sectioned degradable plugging device

Abstract

The invention provides a sectioned degradable plugging device. The sectioned degradable plugging device comprises a net-shaped support. The net-shaped support is formed by knitting degradable yarns and comprises an upper disc face, a lower disc face and a waist for connecting the upper disc face with the lower disc face. An upper membrane arranged on the upper disc face in a covering mode is sewed to the upper disc face. A lower membrane arranged on the lower disc face in a covering mode is sewed to the lower disc face. A flow blocking membrane for transversely blocking the waist is arranged on the waist. The upper membrane, the lower membrane and the flow blocking membrane are made of degradable materials. An inner core connecting rod is arranged in the middle of the lower disc face and connected with the lower membrane into a whole. A clamping structure is arranged in the middle of the upper disc face, and the inner core connecting rod can penetrate through the flow blocking membrane to be clamped on the clamping structure. According to the sectioned degradable plugging device, the structure is used for polymer-class degradable plugging devices, and the problems, caused by the poor mechanical properties of polymer materials, in the rebound resilience, the fixing stability and the like are solved through innovation in the structure aspect.

Description

technical field [0001] The invention relates to a split-valve degradable occluder. Background technique [0002] For congenital heart disease, the commonly used clinical occluder is the mushroom umbrella occluder. The main working principle is to stabilize the flow-blocking membrane at the lesion position with metal as the bracket, wait for the thrombus to be adsorbed, and finally endothelialize the occluder. Fully integrated with surrounding tissues. However, the implantation of the metal occluder will cause the following problems: 1) It will remain in the human body for life, which will affect the possible follow-up surgical treatment; 2) Artifacts will appear in MRI and CT examinations; 3) It may change the heart The geometric configuration can cause adverse reactions such as thrombosis and acute myocardial infarction; 4) NiTi mesh scaffolds will slowly release Ni ions in the tissue. [0003] Therefore, if can develop a kind of occluding device that can degrade complete...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a split-type degradable occluder, which is used to solve the problem of poor fixation performance of the occluder made of easily degradable materials in the prior art

Images