High-compliance three-branch stent used in aorta surgery

Abstract

The invention discloses a high-compliance three-branch stent used in aorta surgery. The high-compliance three-branch stent used in aorta surgery comprises an arched membrane-covered stent and three branches integrally formed with the arched membrane-covered stent. The arched membrane-covered stent comprises a lower portion (1), an arched portion (2) and an upper portion (3). The three branches include a first branch (4), a second branch (5) and a third branch (6). The bending degree of the arched portion (2) coincides with the structure of the arcus aortae. The first branch (4), the second branch (5) and the third branch (6) are arranged on the arched portion (2). The positional structures of the first branch (4), the second branch (5) and the third branch (6) are in one-to-one correspondence to the structures of three branches starting from the upper edge of the arcus aortae. The high-compliance three-branch stent used in aorta surgery can be well attached to the arcus aortae, and the stent not only has high compliance, but has high universality.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a high-compliance three-branch stent in aortic surgery. Background technique [0002] At present, when Stanford type A aortic dissection or aortic aneurysm affects the aortic arch, only interventional techniques cannot achieve endovascular isolation. Thoracotomy is routinely used for such diseases, total aortic arch replacement is performed under extracorporeal circulation, and the three important branches of the aortic arch are anastomosed one by one. Anastomosis of the replaced aortic arch artificial vessels requires deep hypothermic circulatory arrest, long operation time, many anastomotic vessels, high difficulty, large trauma, many postoperative complications, slow recovery, and high follow-up treatment costs. The currently adopted method is to sew three branches on the straight support to achieve the purpose of simplifying the operation, but the effect is not sat...

AI Technical Summary

Problems solved by technology

[0002] At present, when Stanford type A aortic dissection or aortic aneurysm affects the aortic arch, only interventional techniques cannot achieve the effect of endovascular isolation

Thoracotomy is routinely used for such diseases, total aortic arch replacement is performed under extracorporeal circulation, and the three important branches of the aortic arch are anastomosed one by one. Anastomosis of the replaced aortic arch artificial vessels requires deep hypothermic circulatory arrest, long operation time, many anastomotic vessels, high difficulty, large trauma, many postoperative complications, slow recovery, and high follow-up treatment costs

The current method is to sew three branches on the straight stent to simplify the operation, but the effect is not ideal

[0003] The disadvantages of the prior art are: since the aortic arch is highly curved, the compliance of the straight stent is poor, and the distance between the branches of the aortic arch varies greatly among individuals, and it is difficult to match the artificial branches; in addition, the branches are directly sutured on the membrane of the main stent, Lack of support, so branches can easily be crushed or displaced, resulting in poor blood flow

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