Aortic arch and branch covered stent blood vessel combined device for open operation

Abstract

The invention discloses an aortic arch and branch covered stent blood vessel combined device for open operation. The device comprises two artificial blood vessel assemblies: (1) an arc-shaped artificial aortic blood vessel (1) and (2) a small covered stent blood vessel (8), wherein the arc-shaped artificial aortic blood vessel (1) comprises a main blood vessel (9) and three branch blood vessels (7) on the main blood vessel (9), the main blood vessel (9) is provided with a stent (8), and a near end part (8a) of the stent (8) is a bare stent capable of being released later. By use of the blood vessel assembly, aortic arch and three branch blood vessels can be reconstructed rapidly in a total-arch replacement operation for aortic arch lesion, normal blood vessel form can be reserved to the greatest extent, the blood vessel assembly is applicable to various common blood vessels with deformed branches, has wide application range, can avoid stent customization, can be produced massively, andcan effectively reduce operation trauma and significantly simplify operation.

Description

technical field [0001] The invention relates to the field of implantable blood vessels, and relates to a three-branch covered stent assembly in the aortic arch that can be used in open surgery. Background technique [0002] Thoracic aortic aneurysm and aortic dissection are serious lesions that seriously threaten the lives of the general public. Without active treatment, the natural disability rate and mortality rate are high. In recent years, with the increase in the incidence of hypertension, hyperlipidemia, hyperglycemia, and trauma, the incidence of thoracic aortic aneurysm and aortic dissection has increased significantly. Currently, aortic arch replacement under direct vision is still the only option for aortic lesions involving the proximal ascending aorta and aortic arch. At present, the most mature aortic arch replacement operation requires artificial blood vessels to replace the diseased blood vessels under deep hypothermic circulatory arrest, and anastomoses the ...

AI Technical Summary

Problems solved by technology

[0004] At present, the three-branched stent-graft vessel that is tried to be used in open surgery is only reported by Chen Liangwan’s group in China. The three-branched stent vessel they designed has obvious disadvantages: ①The three-branched vessels in the human body have large differences in course and diameter, The combined three-branch vascular system varies greatly. The stent blood vessels used by Chen Liangwan’s team are blood vessels with fixed branches, which cannot be completely prefabricated to match the stents of various blood vessel conditions, and the occurrence of endoleaks is high.

② The three branches are fixed with the main stent vessel, and must be placed at the same time during implantation, which is difficult to operate and easily damages the branch vessel

However, this stent cannot completely prefabricate three-branch vessels of different calibers, and when the position of the branch opening varies greatly, the blood vessels at the opening are easily twisted and compressed, and the vascular membrane of the branch vessels on the greater curvature is not supported by a stent, and internal fistulas are prone to occur in the vascular lesions of the greater curvature

It is difficult to accurately place the three-branch vessels, especially when the branch variation is large, it will affect the blood flow of the branch vessels and the lumen of the main vessel

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