PLASTIC COVERED STENT FOR AORTIC DISSECTION AND AORTIC DISSECTION STENT

摘要

A plastic covered stent (100) for aortic dissection and an aortic dissection stent are disclosed. The plastic covered stent (100) for aortic dissection includes a tubular membrane (150) and multiple annular stents (110, 120, 130, 140) sequentially sutured on the membrane (150) along an axial direction. Part of the annular stents on the membrane (150) are semi-suture stents (130). Each semi-suture stent (130) has non-suture zones separable from the membrane (150). When the plastic covered stent is bent, the membrane (150) corresponding to the non-suture zones at an inner bending side of the plastic covered stent is separated from the semi-suture stents (130) and folded inwardly. The semi-suture stents (130) are distributed on a bending portion of the plastic covered stent (100) for aortic dissection after being implanted. The semi-suture stents (130) form at least two adjacent circles. For the plastic covered stent (100) for aortic dissection, when the covered stent (100) is bent, the non-suture zones of two adjacent annular stents (110, 120, 130, 140) located at the inner bending side can be stacked, and the membrane (150) at the non-suture zones is folded towards inside of the covered stent, thus maintaining the bending form of the covered stent (100).