Inner leak proof bendable internal cavity isolation artificial blood vessel support and artificial blood ressel

Abstract

A scaffold for the artificial blood vessel without internal leakage and curved easily is composed of multiple Z-shaped rings arranged axially. Several connecting rods are connected between two Z-shaped rings. The top and bottom Z-shaped rings have archor rods. A segment of sealed artificial blood vessel wall is arranged at both ends of said scaffold. The middle segment of artificial blood vessel wall is linked to said sealed ones in sleeve mode.

Description

technical field [0001] The present invention relates to percutaneous puncture implantable intraluminal isolation of large arteries, in particular to anti-endoleak and flexible intraluminal isolation artificial stents and stents for minimally invasive treatment of aortic aneurysm-like lesions or aortic dissection, and belongs to the technology of medical equipment manufacturing field. Background technique [0002] The aortic wall can be divided into three layers in terms of tissue structure: aortic intima, aortic media and aortic adventitia. The pathological regional expansion of the arterial wall is called an aneurysm, and an aortic aneurysm is a full-thickness expansion of the aortic wall, forming a tumor-like change. And aortic dissection aneurysm is mainly due to degeneration of the middle layer of the artery, the cohesion between the intima, the middle layer and the adventitia decreases. The inferior transintimal tear enters the aortic media, ca...

AI Technical Summary

Problems solved by technology

(5) Incorrect selection of stent-type vessel diameter: when the diameter of the stent at the proximal and distal anchoring sites is too small, it may cause endoleaks

At present, there is no intraluminal isolation artificial stent at home and abroad that can completely prevent endoleakage. Although there is a domestic patent (Patent No. 02138385.5) that proposes to prevent endoleakage, its defect is that the sealing ring may prevent it from being loaded into a small diameter after contraction. Pushing the introducer sheath or introducing the system with a thicker diameter will cause more damage to the artery of the channel. It is not considered that the emptying of the conveyor channel during the operation and the injection of liquid will cause the filler to pre-expand and affect the sealing effect, and once the filler pocket is ruptured, the filler will enter the bloodstream. flow can be dangerous

Images