Recyclable vascular interlayer plugging device

Abstract

The invention provides a recyclable vascular interlayer plugging device. The recyclable vascular interlayer plugging device comprises a bare stent and a flow blocking film. The bare stent comprises a stent body and a recovery body; the support body comprises a support body section, a first turnover section and a second turnover section, wherein the first turnover section and the second turnover section are connected to the two ends of the support body section respectively, the recovery body is connected to one end of the support body section, and the first turnover section and the second turnover section both face the outer side of the support body section and overturn towards the recovery body; the flow blocking film covers the stent main body section, the first turnover section and the second turnover section; the first turnover section and the second turnover section are supported on the blood vessel wall in the circumferential direction and located on the two sides of a crevasse of the blood vessel interlayer respectively to block the crevasse, and the recovery body is used for recycling the recyclable blood vessel interlayer blocking device. The recyclable vascular interlayer plugging device provided by the invention can block blood flow of a true cavity and a false cavity and promote thrombosis of the false cavity, is particularly suitable for plugging a far-end crevasse of a vascular interlayer, and is wide in application range; and moreover, the device can be recycled and taken out, so that in-vivo implants and complications are reduced.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a recoverable vascular dissection occlusion device. Background technique [0002] Aortic dissection refers to a state in which the blood in the aortic lumen enters the aortic media from the aortic intima tear, separates the media, and expands along the long axis of the aorta to form a true and false two-chamber separation state of the aortic wall. At the time of onset, the proximal (proximal end refers to the end relatively close to the heart) tear is often close to the aortic isthmus, which is the entrance of the dissection false lumen, and the false lumen is encountered during the development of the distal end (the distal end refers to the end relatively far from the heart). For larger branch vessels, the intima often breaks from the opening of the branch vessels to form a new breach, that is, the distal breach of the dissection. [0003] The principle of surgical ...

AI Technical Summary

Problems solved by technology

Coils are packing materials, which are mainly implanted in the false cavity to promote thrombosis of the false cavity. However, due to the large number of coils used in the operation, the operation cost is relatively increased. risk

The Candy-plug stent is a blind-end covered stent implanted in the false lumen to block the blood flow between the true lumen and the false lumen and promote thrombosis. limitations

In summary, for the distal breach of vascular dissection, there is a lack of a occlusion device that is widely applicable and can be removed after the false lumen is thrombosed.

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