The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2020
Filed:
Dec. 30, 2017
Bvw Holding Ag, Cham, CH;
BVW Holding AG, Cham, CH;
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.