Sewing-free stent artificial blood vessel and super elastic woven fixing ring

Abstract

The invention discloses a sewing-free stent artificial blood vessel and a super elastic woven fixing ring, and relates to the technical field of medical equipment. The problem that an existing artificial blood vessel has difficulty in anastomosis, and the anastomosis time is too long, so that blood leak and complications are caused is solved. The sewing-free stent artificial blood vessel comprisesa artificial blood vessel body formed by a line-making part artificial blood vessel and a non-line-making part artificial blood vessel which are connected in sequence, and a compressible elastic metal support is sewn on the non-line-making part artificial blood vessel; the line-making part artificial blood vessel is provided with a sewing-free connecting part which is formed by a soft circular pocket which is located on the outer side of the line-making part artificial blood vessel and is in coaxial and seamless connection with the line-making part artificial blood vessel and the super elastic woven fixing ring arranged between the soft circular pocket and the line-making part artificial blood vessel, and a height constraint device is arranged on the super elastic woven fixing ring in thedirection of elasticity; the super elastic woven fixing ring is of an up-down staggered grid structure and is formed by weaving super elastic nickel-titanium alloy wire.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a suture-free stent artificial blood vessel and a superelastic braided fixing ring. Background technique [0002] Aortic dissection is a dangerous aortic disease with rapid progression and high mortality. The incidence rate is about 0.3%. The untreated early mortality rate increases by 1% every hour. More than 50% of patients die within 1 week . The onset of aortic dissection is rapid, and the prognosis is extremely poor. Even patients who survive will continue to develop chronic aortic dissection with various clinical manifestations. The location of the aortic dissection breach is the core factor that determines the surgical method. The breach is located in the descending aorta, that is, type B dissection. Endovascular repair of the aorta has replaced it because of its small incision, high success rate, good therapeutic effect, and fast postoperative recovery. Most of ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a suture-free stent artificial blood vessel and a superelastic braided fixing ring to solve the technical problems of difficulty in artificial blood vessel anastomosis, blood leakage and complications caused by too long anastomosis time in the prior art

Images