Title:
STENT GRAFT
Document Type and Number:
WIPO Patent Application WO/2021/110001
Kind Code:
A1
Abstract:
The present invention relates to the field of medical devices, and specifically to a stent graft. The stent graft has a proximal greater curvature side and a proximal lesser curvature side. The stent graft comprises a stent body, an inner cover membrane disposed on the inner side of the stent body, and an outer cover membrane disposed on the outer side of the stent body. The stent body comprises a plurality of wave rings axially arranged at intervals. Alternately arranged crests and troughs are formed on the wave rings. The outer cover membrane is provided with a first opening, and the first opening exposes at least one trough located at or close to the proximal greater curvature side. According to the stent graft in the embodiments of the present invention, the exposed trough is easy to hang on a vessel wall, and thus can achieve the function of preventing the stent graft from shifting. The crests and troughs located at the proximal lesser curvature side of the stent graft remain covered by the outer cover membrane. Therefore, the cover membrane in a stent lumen and the wave ring stack are in the blood flow direction, thereby reducing the risk of thrombosis.
Inventors:
XIAO BENHAO (CN)
TANG JIANGFENG (CN)
LIU CAIPING (CN)
TANG JIANGFENG (CN)
LIU CAIPING (CN)
Application Number:
PCT/CN2020/133175
Publication Date:
June 10, 2021
Filing Date:
December 01, 2020
Export Citation:
Assignee:
SHENZHEN LIFETECH ENDOVASCULAR MEDICAL CO LTD (CN)
International Classes:
A61F2/82; A61F2/06; A61F2/07
Foreign References:
| CN110393607A | 2019-11-01 | |||
| CN101283937A | 2008-10-15 | |||
| CN102488575A | 2012-06-13 | |||
| CN110393605A | 2019-11-01 | |||
| CN103720529A | 2014-04-16 |
Other References:
See also references of EP 4070764A4
Attorney, Agent or Firm:
BEIJING CHENQUAN INTELLECTUAL PROPERTY LAW FIRM (CN)
Download PDF: