A transapical anatomical stent to repair ascending aorta and hemi arch

摘要

This is an ascending aorta and hemi arch repair stent graft anchored by innominate artery. The graft includes two basic parts: ascending aortic segment and innominate artery segment. The innominate artery portion of the stent graft is firstly released, then the main stent graft is continuously released. The distal end of the main stent graft is against the distal end of the aortic arch, and the main stent graft covers the primary tear location. The proximal stent graft should be positioned precisely above the sinotubular junction. The longitudinal metal beam structure with temperature-dependent shape memory alloy extending along the greater and lesser curvature of the aortic arch would fit to the aortic anatomic morphology perfectly. The graft is secured to the aorta by means of both innominate artery stent graft anchoring and temperature-dependent longitudinal metal beam. The invention is aimed at the patients with type A aorta dissection who cannot undergo the early surgery in the acute phase, providing opportunities for follow-up surgical treatment.