Aortic stent membrane coating system

Abstract

The invention relates to an aortic stent membrane coating system. The aortic stent membrane coating system comprises a stent membrane coating mechanism, a heating and pressurizing device and a controlfeedback unit, the stent membrane coating mechanism is of a sleeve-shaped structure and is connected with the heating and pressurizing device, and the control feedback unit is connected with the stent membrane coating mechanism and the heating and pressurizing device. Compared with the prior art, air is heated and pressurized, and then pumped into an inner cavity of the stent unit membrane coating mechanism, through two heat treatment procedures, inner and outer double-sided membrane coating of an aortic stent is completed, a membrane and the stent are integrated, the situation that thrombusis prone to occurring due to the fact that the rough surface of the stent directly faces the interior of a lumen is avoided, and damage to the aortic wall due to exposure of the outer surface of the stent can also be reduced; and secondly, stent membrane coating materials adopt hot pressing treatment, a suture line is avoided, blood leakage due to suture line holes is avoided, besides, the compliance degree of an overall graft is further increased, the graft is more suitable for bending traveling of an artery, and the success rate of endovascular graft exclusion of the human body and the rehabilitation level of patients are greatly increased.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to an aortic stent covering system. Background technique [0002] Aortic disease, especially vascular dissection and hemangioma seriously endanger the life safety of patients. The most widely used treatment for aortic aneurysm is endovascular repair (Endovascularaortic Aneurysm Repair, EVAR). Compared with traditional surgical operations, the most prominent feature of endovascular exclusion is that it is minimally invasive, without the surgical trauma of open thoracotomy and the pathophysiological interference caused by blocking the aorta. Its principle: the stent is covered with autologous blood vessels, artificial blood vessels made of biomaterials or synthetic materials, and the covered stent is implanted into the cavity of the aortic aneurysm through the delivery system to separate the hemangioma from the blood flow and rebuild a new blood flow channel. The hemangioma ...

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