Covered stent

Abstract

The covered stent comprises a stent body and a covering film covering the stent body, the covering film is provided with a first end and a second end which are opposite in the axial direction, a channel with an open state and a closed state is formed in the first end of the covering film, and the channel is in the open state when impacted by fluid; and the device is in a closed state without fluid impact. The covered stent can avoid affecting blood supply of branch blood vessels.

Description

technical field [0001] The invention relates to the field of interventional medical devices, in particular to a covered stent. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] Aneurysm is a clinically common vascular disease, which mostly occurs in the elderly. This disease can easily lead to aneurysm rupture, which poses a great threat to the life of patients. [0004] With the continuous development of medical technology, the use of minimally invasive surgery to implant covered stents into the body to treat aortic aneurysms and dissecting aneurysms has been widely used because of its small trauma and fast recovery. This treatment method is to compress the covered stent into the delivery device, guide it into the human body along the previously implanted guide wire track, and release the covered stent after reaching the lesion position to isolate the lesion, rebuild ...

AI Technical Summary

Problems solved by technology

[0005] If the covered stent is implanted close to the branch, the proximal covering may block the opening of the branch vessel, affect the blood supply of the branch vessel, and cause harm to the patient

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