Aortic arch covered stent and conveying device thereof

Abstract

The invention provides an aortic arch covered stent and a conveying device thereof, and relates to the field of medical instruments, the aortic arch covered stent comprises a skeleton, a main covering film, an abutted seam covering film, a first fixing ring, a second fixing ring and a third fixing ring; the main covering film is connected to the skeleton to form a covered stent body, a first opening is formed in the near end of the main covering film, the first fixing ring is fixed to the edge of the first opening, and developing marks are arranged around the first fixing ring; a window is formed in the far-end part of the first opening in the main covering film, the abutted seam covering film comprises a window covering film, the window covering film covers the window and is connected to the main covering film in a sewing mode, a second opening and a third opening are formed in the window covering film, a second fixing ring is fixed to the edge of the second opening, and a third fixing ring is fixed to the edge of the third opening; and the second fixing ring and the third fixing ring are connected with developing rings. The problems that a pre-windowing covered stent is difficult to match with branch blood vessels of a human body, blood vessel cutoff is easily caused, blood does not flow through blood vessel branches before windowing of an operation windowing covered stent, membrane rupture causes covered tissue damage, and the covering strength is affected are solved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an aortic arch covered stent and a delivery device thereof. Background technique [0002] Aortic diseases such as aortic dissection and aortic aneurysm are a serious threat to human health. With the advent of my country's aging society, the incidence of chronic diseases such as hypertension and atherosclerosis has shown a significant increase trend, and the incidence of thoracic aortic aneurysm and aortic dissection has increased significantly, which is a great threat to the lives of patients; Especially for aortic dissection with a wide range of lesions and affecting the blood supply of the brain, spinal cord and multiple organs, the surgical trauma is large, the operation is complicated, the time is long, and the blood consumption is high. The incidence of surgical complications and surgical mortality are high. Reconstructing the blood supply of the aorta and its branch...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of aortic arch covered stent and its delivery device, in order to alleviate the existing arch covered stent in the prior art when treating aortic disease, the pre-opened fenestration covered stent is difficult to connect with the branch blood vessels of the human body. Matching can easily lead to vascular interruption, blood does not flow through the vascular branches before the fenestration of the surgical fenestration stent graft, membrane rupture leads to damage to the membrane tissue, and affects the technical problems of the membrane strength

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