Aortic arch-thoracic aorta slide regulation pre-fenestration covered stent

Abstract

The invention discloses an aortic arch-thoracic aorta slide regulation pre-fenestration covered stent. The aortic arch-thoracic aorta slide regulation pre-fenestration covered stent is characterized by comprising a cylindrical tubular first covered stent body, a second covered stent body, a rotating stent, a truncus brachiocephalicus branch vessel port covered stent body and a left subclavian artery branch vessel port covered stent body; the rotating stent is formed by connecting a cylindrical front covered stent segment, a front bare stent segment, a covered stent segment, a rear bare stent segment and a rear covered stent segment coaxially. A left common carotid artery branch vessel port is arranged on the side wall of the covered stent segment, the truncus brachiocephalicus branch vessel port covered stent body is inserted in the front bare stent segment, and the left subclavian artery branch vessel port covered stent body is inserted in the rear bare stent segment. The proximal endof the rotating stent is slidably connected with an annular rear sliding track of the first covered stent body through a circular front slide in a sleeving mode, and the distal end of the rotating stent is slidably connected with an annular front sliding track of the second covered stent body through an annular rear slide in a sleeving mode. The aortic arch-thoracic aorta slide regulation pre-fenestration covered stent has the advantages such as novel structure, simple manufacturing process, short operation time and small technical difficulty during the operation.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an aortic arch-thoracic aortic slide regulation pre-fenestration covered stent. Background technique [0002] As we all know, dissected aortic aneurysm refers to the blood in the aortic lumen enters the aortic media from the aortic intima tear, separates the media, and expands along the long axis of the aorta to form a true and false two-chamber separation state of the aortic wall . The onset of this disease is ferocious. Once the blood breaks through the adventitia of the dissected vessel and the aorta ruptures, the patient will die suddenly. Therefore, the dissected aortic aneurysm is also called a "time bomb" on the blood vessel, and the incidence rate is about 1 / 100,000 per year. The peak age is 50-70 years old. According to statistics, if aortic dissection is not treated surgically, 90% of patients will die within 5 years. [0003] Dissected aortic aneurysm is due...

AI Technical Summary

Problems solved by technology

The substantive deficiencies of this fenestrated stent-graft are: 1. In clinical use, the operation steps are cumbersome, which prolongs the operation time. Shear force increases the possibility of retrograde tearing of the dissection; the second is that the positions of the branch vessels connecting the brachiocephalic trunk on the side of the aortic arch, the left carotid aorta, and the left subclavian artery vary from person to person, and are not necessarily on the same longitudinal section , and the distances between the openings of the three branch vessels are also different. Therefore, this technology still cannot meet the needs of type A dissection lesions clinically.

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