Stent with anti-migration features
AssigneeBoston Scientific Scimed, Inc.
InventorsTimothy L. Rubesch, John A. Hingston, Michael D. Amos, Terry V. Brown
Life of this patent
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Abstract
An implantable medical device for implantation within a passageway of a patient comprises a stent including a plurality of wires, at least one of the plurality of wires having a cross-section having a first tapered point, and a covering layer having an inner diameter and an outer diameter. In some embodiments, the plurality of wires may be disposed at least partially around the covering layer. Additionally in some embodiments, the first tapered point may extend outward further than the outer diameter of the covering layer.
Claims20
An implantable medical device for implantation within a passageway of a patient, the device comprising:
- a tubular framework including a plurality of interwoven wires, at least one of the plurality of interwoven wires comprising a cross-section having a first tapered point, the cross-section of the at least one wire taken transverse to a longitudinal length of the wire such that the first tapered point extends along the longitudinal length of the wire;
- a covering layer having a central longitudinal axis and an inner diameter and an outer diameter;
- wherein the covering layer covers at least a portion of the framework and extends between adjacent wires of the plurality of interwoven wires included in the portion of the framework, and
- wherein the first tapered point extends outward further than the outer diameter of portions of the covering layer that extend between the adjacent wires.
An implantable medical device for implantation within a passageway of a patient, the device comprising:
- a tubular framework including a plurality of interwoven wires, at least one of the plurality of interwoven wires comprising a cross-section having a first tapered point oriented radially outward from a central longitudinal axis of the framework, the cross-section of the at least one wire taken transverse to a longitudinal length of the wire such that the first tapered point extends along the longitudinal length of the wire;
- and
- a covering layer disposed over the framework and extending between adjacent wires of the plurality of interwoven wires, the covering layer having an inner diameter and an outer diameter;
- wherein the first tapered point is embedded in the covering layer and forms a radially outward extending bump in an outer wall surface of the covering layer extending radially outward of the outer diameter of the covering layer.
An implantable medical device for implantation within a passageway of a patient, the device comprising:
- a tubular framework including a plurality of interwoven wires, at least one of the plurality of interwoven wires comprising a cross-section having a first tapered point oriented radially outward from a central longitudinal axis of the framework, the cross-section of the at least one wire taken transverse to a longitudinal length of the wire such that the first tapered point extends along the longitudinal length of the wire;
- and
- a covering layer disposed over a portion of the framework and extending between adjacent wires of the plurality of interwoven wires included in the portion of the framework;
- wherein the first tapered point extends radially outward further than an outer diameter of portions of the covering layer that extend between the adjacent wires, and
- wherein the first tapered point is embedded in the covering layer and forms a radially outward extending bump in an outer wall surface of the covering layer that extends radially outward further than the first tapered point.
Dependencies are inferred from the claim text.