Covered stent for aortic dissection surgery, delivery device and use method thereof

Abstract

The invention discloses a covered stent for an aortic dissection surgery, a delivery device and a use method thereof. The stent comprises a main body, wherein the main body decreases progressively from the heart near end with a large diameter to a far end with a small diameter, and the superior border of the middle piece of the main body is a rotary island; a tectorial membrane is arranged except the rotary island, and the two ends of the main body and the rotary island are provided with positioning marks. The delivery device comprises a delivery sheathing canal, a suture and a traction guide wire, wherein the suture is sewn on the outer side surface of the covered stent, and the two side edges of the covered stent at the near end of the left subclavian artery are sewn up by the suture; the stent is closed up to be in a semi-contraction state by the traction guide wire through the suture, and the covered stent is closed up and wrapped in the delivery sheathing canal; the delivery sheathing canal is provided with a steeple, and the far end of the traction guide wire penetrates through the handle of the delivery sheathing canal and is fixed. The covered stent for the aortic dissection surgery is used for a dissecting aneurysm surgery of the lesser curvature side of aortic arch and an interventional minimally invasive surgery of an aortic dissection near the brachiocephalic trunk, so that the trauma of a thoracotomy is avoided, and the athe lumen crevasse occlusion is directly implemented.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a stent graft for aortic dissection surgery and a method for using the same. Background technique [0002] For dissecting aneurysms with openings on the lesser curvature of the aortic arch and Stanford type A dissecting aneurysms within 6 cm of the brachiocephalic artery (without involving the coronary arteries and aortic valve), traditional stent-grafts are not suitable for placement in the aortic cavity Internal repair, this method will block the openings of the three branches of the aortic arch, affecting the blood supply to the head. Therefore, the current surgical method is thoracotomy, in which artificial blood vessels are used to replace the diseased aortic arch under extracorporeal circulation. This method is traumatic, and many patients in poor physical condition cannot tolerate thoracotomy, and the bleeding at the anastomosis point of artificial blood vessels and autolog...

AI Technical Summary

Problems solved by technology

This method is traumatic, and many patients in poor physical condition cannot tolerate thoracotomy, and the bleeding at the anastomosis point of artificial blood vessels and autologous blood vessels during cardiopulmonary bypass surgery, as well as the problems of brain protection and important organ protection during the operation are complicated. One of the leading causes of postoperative death

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