Granted Patent B2

US 12,746,134 · App. 18/128,927 · Granted Sep 29, 2026

Inventors: Jasmine Clevenger (Sherborn, MA); Molly Solomon (Groton, MA); Jonathan Root (Townsend, MA); Kevin Windheuser (Hopkinton, MA); Garrett Casserly (Galway, IE); Michael Walsh (Galway, IE)

Assignee: BOSTON SCIENTIFIC SCIMED, INC.

A61F2/848A61F2240/001

Abstract

Claims (36)

1 . An endoprosthesis for implantation within a vessel lumen, comprising:

a tubular scaffold having a length, the tubular scaffold formed of one or more interwoven filaments defining interstices therebetween, wherein the tubular scaffold is configured to shift between a radially collapsed configuration and a radially expanded configuration;

a polymeric covering secured to the tubular scaffold; and

an anti-migration element extending radially outward from the tubular scaffold, wherein the anti-migration element comprises a wire extending along an outer surface of the polymeric covering;

wherein the anti-migration element extends helically along at least a portion of the length of the tubular scaffold in a first helical direction;

wherein a second polymeric covering is disposed over the wire and forms at least a portion of the anti-migration element.

2 . The endoprosthesis of claim 1 , wherein the wire is secured directly to the tubular scaffold at a plurality of attachment points.

3 . The endoprosthesis of claim 2 , wherein the second polymeric covering is disposed over the plurality of attachment points.

4 . The endoprosthesis of claim 1 , wherein the anti-migration element extends continuously from a proximal end of the anti-migration element to a distal end of the anti-migration element.

5 . The endoprosthesis of claim 1 , wherein a pitch between adjacent windings of the anti-migration element varies along the length of the tubular scaffold.

6 . The endoprosthesis of claim 5 , wherein the pitch between adjacent windings of the anti-migration element is wider along a medial region of the tubular scaffold than the pitch between adjacent windings of the anti-migration element along a proximal end region of the tubular scaffold and/or a distal end region of the tubular scaffold.

7 . The endoprosthesis of claim 2 , wherein the plurality of attachments points is disposed at uncovered portions of the tubular scaffold.

8 . The endoprosthesis of claim 7 , wherein the uncovered portions of the tubular scaffold include at least a portion of a proximal end region of the tubular scaffold and at least a portion of a distal end region of the tubular scaffold.

9 . The endoprosthesis of claim 7 , wherein at least some of the uncovered portions of the tubular scaffold are disposed along a medial region of the tubular scaffold.

10 . The endoprosthesis of claim 2 , wherein the tubular scaffold and the wire are both formed from a metallic material.

11 . The endoprosthesis of claim 10 , wherein the wire is fixedly attached to the tubular scaffold at the plurality of attachment points.

12 . The endoprosthesis of claim 11 , wherein the wire is welded to the tubular scaffold at the plurality of attachment points.

13 . The endoprosthesis of claim 1 , wherein the one or more interwoven filaments extend radially inward of an inner surface of the first polymeric covering.

14 . The endoprosthesis of claim 1 , wherein the second polymeric covering extends around an entire circumference of the tubular scaffold within a cross-sectional plane taken perpendicular to a central longitudinal axis of the tubular scaffold.

15 . The endoprosthesis of claim 1 , wherein an outer surface of the wire is disposed in contact with the outer surface of the polymeric covering.

16 . A method of manufacturing an endoprosthesis for implantation within a vessel lumen, comprising:

forming a tubular scaffold from one or more interwoven filaments defining interstices therebetween, the tubular scaffold having a length;

applying a polymeric covering to at least a portion of the tubular scaffold;

positioning the tubular scaffold under a nozzle configured to apply a polymeric bead of material onto the polymeric covering; and

applying the polymeric bead of material onto the polymeric covering previously applied to the tubular scaffold using the nozzle such that the polymeric bead of material forms an anti-migration element extending radially outward from the polymeric covering, wherein the anti-migration element extends helically along at least a portion of the length of the tubular scaffold.

17 . The method of claim 16 , further comprising:

rotating and moving the tubular scaffold longitudinally relative to the nozzle to vary a pitch between adjacent windings of the anti-migration element.

18 . A method of manufacturing an endoprosthesis for implantation within a vessel lumen, comprising:

forming a tubular scaffold from one or more interwoven filaments defining interstices therebetween, the tubular scaffold having a length;

applying a polymeric covering to at least a medial region of the tubular scaffold;

wrapping a wire helically around the tubular scaffold over the polymeric covering;

securing the wire to uncovered portions of the tubular scaffold; and

thereafter, applying a second polymeric covering over the wire and the uncovered portions of the tubular scaffold.

19 . The method of claim 18 , wherein the uncovered portions of the tubular scaffold include a proximal end region disposed proximal of the medial region and a distal end region disposed distal of the medial region.

20 . The method of claim 18 , wherein the uncovered portions of the tubular scaffold include a plurality of attachment points of the tubular scaffold defined by removing some of the polymeric covering from the tubular scaffold;

wherein securing the wire to uncovered portions of the tubular scaffold includes securing the wire to the tubular scaffold at the plurality of attachment points.

Assignments (1)

Continuity (2)

References Cited (47)