Modularized stent with branches for treating thoracoabdominal aortic aneurysm

Abstract

The invention relates to a modular stent with branches for treating thoracoabdominal aortic aneurysm, and belongs to the technical field of medical instruments. The stent is a covered stent and comprises a descending aorta region near-end anchoring module, a visceral artery region branch graft module and an abdominal aorta region far-end anchoring module which are communicated in sequence; the number of the descending aorta area near-end anchoring module is at least one. The invention provides a modular endovascular graft with branches for treating thoracico-abdominal aortic aneurysm of Asian people. Through modularization and different combination modes, anatomical structures of various thoracico-abdominal aortic aneurysms can be adapted, and the time required by customization can be effectively avoided; visceral arteries and renal arteries can be reconstructed through branches; sufficient friction force is provided for graft anchoring and bridging through combined anchoring, branch selection is facilitated through a guide wire guiding area, and operation difficulty and the time are reduced. Therefore, the thoracico-abdominal aortic aneurysm is effectively treated, the operation time is shortened, and adverse reactions of contrast agents are reduced.

Description

technical field [0001] The invention relates to a modular stent with branches for treating thoracoabdominal aortic aneurysm, belonging to the technical field of medical devices. In the present invention, the direction is defined by the flow direction of the blood flow from the proximal end to the distal end. Background technique [0002] Thoracic abdominal aortic aneurysm (thoracoabdominal aortic aneurysm, TAAAs) is secondary to the weakness of the aortic wall, and the resulting expansion of the thoracic and abdominal aorta limitations. Because TAAA often involves multiple visceral arteries such as the celiac artery, superior mesenteric artery, and renal arteries on both sides, it is a very dangerous aortic disease. The incidence of thoracoabdominal aortic aneurysm is about 5.9 / 100000 person-years. The natural course of the disease often leads to dissection or rupture, and epidemiological studies have found that up to 80% of TAAA patients will eventually rupture, resulting...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of how to overcome the defects of the prior art, obtain a better adaptation to the complex anatomical structure of the patient, and better take into account the individual needs of the patient and the finished product by modularizing the whole branch vascular graft. production technical issues

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