Artificial blood vessel with bias current guide

Abstract

The invention discloses an artificial blood vessel with a bias flow guide, and aims at solving the problem of terminal restenosis after a bridging operation. The artificial blood vessel consists of a common artificial blood vessel, a bias flow guide and a suturing edge which form a whole. The bias flow guide is characterized in that the through section gradually changes from a circle to a half ellipse, and the through section area is kept constant while the through section gradually deflects to the left side or the right side during the transition process, and the other side is filled with anartificial blood vessel material. The angle between the end face of the bias flow guide and the axis of the artificial blood vessel is 45 degrees which is typically adopted in the bridging surgery. The suturing edge is made of the artificial blood vessel material, and extends 1-2mm outwards for suturing the bridged blood vessel. The artificial blood vessel can cause a rotating flow in the bridgedblood vessel, stabilizes blood stream and reduces turbulent flow, thus being more favorable to washing the internal wall of the bridged blood vessel, inhibiting occurrence of endometrial hyperplasia,and preventing the restenosis of the downstream terminal of the bridged part after the bridging operation.

Description

technical field [0001] The invention relates to an artificial blood vessel Background technique [0002] At present, the medical field has generally used autologous blood vessels or artificial blood vessels to perform arterial bypass grafting or reconstruction surgery. However, postoperative intimal hyperplasia has become a major cause of late failure of medium and small vessel surgery. Although intimal hyperplasia can occur at both the upstream suture end and the downstream suture end of bypass vessels, the intimal hyperplasia in the downstream is much more pronounced than in the upstream. Postoperative intimal hyperplasia downstream mainly occurs in two locations: the anastomotic suture and the bottom surface of the main artery at the anastomosis, and the latter is the main cause of vascular restenosis in the postoperative period. Studies have shown that intimal hyperplasia at vascular sutures is mainly due to vascular healing and reconstruction caused by physical trauma...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the deficiencies in the prior art and to propose an artificial blood vessel with a bias flow guider by using the principle of swirling flow in the human blood circulation system to solve the problem of downstream restenosis after bypass surgery

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