Adjustable single-branch artificial aortic arch implant

Abstract

The invention relates to an adjustable single-branch man-made aortic arch implant which comprises an aortic arch main stent that is formed by serially connecting nickel-titanium alloy wire materials with a Z-shaped ripple shape; a hollow stent made of a nickel-titanium alloy tube forms a branch blood vessel stent on the aortic arch which is coated by medical tectorial membrane materials; the ripple density of the remote end of the main stent is increased for strengthening the radial support force of the stent, and the Z-shaped ripple at the close end of the main stent is connected with the traditional decron-made artificial blood vessel. The implant of the invention can be squeezed to deform at will in the low temperature, and the host blood vessel can be implanted easily as the caliber can be adjusted at will. In the clinic, not only the aortic arch surgical operation can be simplified, but also the operation time and the surgery complication are reduced, thereby pains of a patient suffered from the aortic arch disease can be lightened more effectively, and the structure is simple as well as the operation is convenient.

Description

technical field [0001] The invention belongs to the field of medical artificial blood vessel grafts, in particular to an adjustable single-branch artificial aortic arch graft. Background technique [0002] With the advent of my country's aging society, the incidence of chronic diseases such as hypertension and atherosclerosis is showing a clear increase trend. One of the long-term consequences of these diseases is secondary aortic and aortic arch disease. According to statistics, 75% of patients with aortic dissection suffer from high blood pressure, and 60% of aortic dissections belong to Stanford type A dissection (involving the aortic arch); atherosclerosis is the most common cause of true aneurysms of the aortic arch. The incidence of aortic dissection in my country is 0.5-2.95 / 100,000·years. According to this calculation, there are about 20,000 patients with aortic dissection in my country every year, and 12,000 of them involve the aortic arch. However, autopsy found ...

AI Technical Summary

Problems solved by technology

However, due to the uniqueness of the aortic arch in terms of anatomy, biomechanics, and hemodynamics, its own diseases cannot be treated by endovascular technology at present.

The invention patent of the National Patent Office with the application number 200710037870.6 discloses an adjustable artificial aortic arch graft, but the structure of the invention is complicated by three vascular stents on the upper branch of the aortic arch, and it is difficult to combine with the human body during operation and difficult to suture

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