Invention Grant
- Patent Title: Stents with improved fixation
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Application No.: US15859440Application Date: 2017-12-30
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Publication No.: US10758380B2Publication Date: 2020-09-01
- Inventor: Lukas Bluecher , Michael Milbocker , Roel Trip
- Applicant: BVW Holding AG
- Applicant Address: CH Cham
- Assignee: BVW Holding AG
- Current Assignee: BVW Holding AG
- Current Assignee Address: CH Cham
- Agency: Patterson Intellectual Property Law, P.C.
- Agent Ryan D. Levy; Mark A. Kilgore
- Main IPC: A61F2/88
- IPC: A61F2/88 ; A61F2/07 ; A61F2/90 ; A61F2/04

Abstract:
The present disclosure provides stents, particularly self-expanding stents, useful for the GI tract, and more particularly, useful for treating esophageal strictures. The stents provided herein include a medial region and proximal and distal cuffs having external diameters greater than the medial region diameter when the stent is in the deployed state. The medial region comprises an open weave wire construction. An elastomeric coating circumscribes the medial region, while the may be an extension of the wire construction or separate elements. Preferably, the cuffs have a textured surface for contact with the esophageal wall tissue to resist stent migration. The elastomer coated medial region provides a barrier to tissue ingrowth, and has an enhanced radial restoring force to maintain an open passageway in a body lumen. Optionally, the stent includes an exterior sheath with a surface pattern, to which the stent couples. A low durometer sleeve, between the stent and body lumen, axial positioning of the stent relative to the body lumen. Consequently, precision in stent placement is provided without tissue damage that could result if positioning motion occurred between the surface texture and the body lumen.
Public/Granted literature
- US20180193175A1 STENTS WITH IMPROVED FIXATION Public/Granted day:2018-07-12
Information query
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