Fenestrated endoprosthesis for the correction of aortic aneurysms

Abstract

A fenestrated endoprosthesis for the correction of aortic arch aneurysms comprising: a stent (20) having a first oblong lateral hole (23) having an area equal to the total area occupied by the innominate artery (11) and by the carotid artery (12); said stent (20) comprises a metal skeleton (21) covered with a fabric (22); characterized by comprising a flexible sac (30) that covers said stent (20)covered with fabric (22); said sac (30) comprises a second lateral hole (32) having an area larger than said first hole (23), so that the edges (26) of said stent (20) covered with fabric (22) that delimit said first hole (23) are visible; the edges (33) of said sac (30) that delimit the hole (32) are welded to said stent (20) covered with fabric (22); a volume (31) is created between said stent (20) covered with fabric (22) and said sac (30); said volume (31) is filled with a polymer.

Description

technical field [0001] The present invention relates to fenestrated endoprostheses for the correction of aortic arch aneurysms. Background technique [0002] Conventional treatment using open surgery as well as treatment using perforated or branched endoprostheses remains associated with high mortality and morbidity. In open surgery, it is crucial that the patient's general clinical condition allows for a surgical intervention of this magnitude (hypothermia, cardiac circulatory arrest, cardiopulmonary bypass, cerebral perfusion techniques, use of primary Aortic arch prosthesis reconstruction with reimplantation of superior arterial trunk, etc.). [0003] Endovascular surgery stemming from the precise intent of reducing invasiveness in the treatment of arterial disease has expanded its reach to also treat patients with aortic arch aneurysm disease that would otherwise be untreatable with conventional techniques. However, a reduction in invasiveness has not always been accom...

AI Technical Summary

Problems solved by technology

For example, stroke is the most serious complication and even though attempts have been made in open surgery to reduce its incidence when perioperative cerebral reperfusion is used, it is difficult to prevent in endovascular surgery because of the implantation of Funneled or branching endoprostheses require direct retrograde access at more than one level of the superior aortic truncus and threading of a guidewire or catheter therein, which is potentially dangerous due to wall trauma (dissection) or displace fragments of mural atherosclerotic lesions, which may be the source of embolism at the end of the intracranial circulation

[0004] There are many ongoing studies by all manufacturers of endoprostheses for the correction of thoracic aorta (ascending, aortic arch, descending aorta) and abdominal aortic aneurysms, but for arch-related aortic segments, there is no Considerable difficulties were encountered with endoprostheses using multi-module branches due to the need to navigate the introducer, guidewire, and stent-graft within the superior aortic trunk. technical complexity and is not without perioperative complications

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