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US 11,590,008 B2Granted
Controlled ingrowth feature for antimigration
AssigneeBoston Scientific Scimed, Inc.
InventorsColby Harris, Stan R. Gilbert, John A. Hingston, William Bertolino, Claude O. Clerc, Petru Andrei
Life of this patent
Estimating the term…
Abstract
A tubular prosthesis that includes a scaffolding formed by at least one scaffolding filament; a cover; and at least one controlled ingrowth feature constructed and arranged to abut an inner surface of a lumen wall when the prosthesis is implanted in the body lumen. The controlled ingrowth feature may extend inwards or outwards from the prosthesis outer surface. The controlled ingrowth feature may be formed by a scaffolding filament; by a separate filament; by the cover; and combinations thereof.
Claims14
A stent comprising:
- a tubular scaffolding formed by at least one interwoven filament, the tubular scaffolding expandable from a compressed delivery state to an expanded implanted state, the scaffolding extending between first and second ends of the stent, the scaffolding having an outer surface and an inner surface, the inner surface defining a lumen of the tubular scaffolding, wherein the at least one interwoven filament of the scaffolding defines a plurality of openings between filament crossings of the at least one interwoven filament, the plurality of openings extending between the inner and outer surfaces;
- and
- a cover disposed on the scaffolding, the stent including a first portion in which the cover covers and contacts at least one of the inner and outer surfaces of the scaffolding, and a second portion in which a radially outward surface of a section of the cover extends inward of the scaffolding and is spaced radially inward away from the inner surface of the scaffolding to define a void between the radially outward surface of the cover and the inner surface of the scaffolding, thereby creating a controlled tissue ingrowth feature within the openings, wherein the scaffolding has a constant outer diameter throughout the first and second portions.
Dependencies are inferred from the claim text.