Stent with anti-migration features
AssigneeBoston Scientific Scimed, Inc.
InventorsTimothy L. Rubesch, John A. Hingston, Michael D. Amos, Terry V. Brown
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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 framework including a plurality of wires, at least one of the plurality of wires comprising a cross-section having a first tapered point;
- 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
- wherein the first tapered point extends outward further than the outer diameter of the covering layer.
A method of forming an implantable medical device, the method comprising:
- positioning a covering layer over a mandrel
- weaving a plurality of wires over the covering layer on the mandrel to form a stent, the covering layer having a central longitudinal axis and an inner diameter and an outer diameter, and at least one of the plurality of wires having a cross-section including a first tapered point;
- and
- wherein the plurality of wires are woven over the covering layer such that the first tapered point of the at least one of the plurality of wires extends outward away from the central longitudinal axis further than the outer diameter of the covering layer.
A method of forming an implantable medical device, the method comprising:
- weaving a plurality of wires to form a woven framework comprising a plurality of open cells, the woven framework having a central hollow region, at least one of the plurality of wires having a cross-section including a first tapered point;
- inserting a compliant filler into the central hollow region of the woven framework;
- covering the woven framework and the compliant filler with a cover material;
- and
- removing the compliant filler.
Dependencies are inferred from the claim text.