Covered stent for aortic dissection surgery, conveying device and use method

Abstract

The invention discloses a covered stent for aortic dissection surgery, a conveying device and a use method. The stent comprises a body which is a covered stent body. The stent is a conical stent with the diameter gradually reduced from the cardiac proximal portion to the thoracic aorta distal portion. An exposed portion is arranged on the lower portion of the body of the stent and is not covered. Three balloon dilatation stents are connected to the upper edge of the middle of the body. A protective gasket made from polytetrafluoroethylene is arranged at the near end of the body. The three balloon dilatation stents are provided with three catheters respectively. Each catheter is about 2 m long. The conveying device comprises a conveying sheath, the body of the stent is compressed in the conveying sheath, and the three balloon dilatation stents on the middle section of the body are compressed in the conveying sheath. A conveying sheath system is provided with an apex, and notches are formed in the tip end of the conveying sheath system for the body of the stent and guide wires and the catheters of the three balloon dilatation stents. The invention provides the covered stent for aortic dissection surgery. The stent is used for minimally invasive surgery treatment of Stanford A type aortic dissection with a wound among three branch vessels on the arcus aortae, avoids injuries caused by thoracotomy, and can be directly used for intra-cardiac wound occlusion.

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 Stanford type A aortic dissection whose breach is located between the three branches of the aortic arch, it is not suitable to use traditional covered stent implantation into the aortic endoluminal repair, this method will block the opening of the three branches of the aortic arch and affect the head Blood supply, resulting in a large area of ​​cerebral infarction. 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 problem of bleeding at the anastomosis point of artificial blood vessels and autologous blood vessels during cardiopulmonary bypass surger...

AI Technical Summary

Problems solved by technology

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

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