Stent-graft

Patent metadata

Field	Value
Publication number	US-12004941-B2
Application number	US-202217744960-A
Country	US
Kind code	B2
Filing date	May 16, 2022
Priority date	Aug 9, 2018
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

A stent-graft comprises: a graft defining an elongate lumen having a longitudinal axis; an external stent having a plurality of struts and apices between the struts, the apices including proximal apices and distal apices; a set of proximal sutured knots, the proximal sutured knots securing the proximal apices of the stent to the graft; a set of distal sutured knots, the distal sutured knots securing the distal apices of the stent to the graft; and a plurality of intermediate sutured knots, formed along a continuous suture, the continuous suture including a plurality of bridging portions, the bridging portions bridging between neighbouring struts of the stent, the intermediate sutured knots securing struts of the stent to the graft.

First claim

The invention claimed is:

1. A stent-graft comprising:
a graft having a proximal end and a distal end and defining an elongate lumen having a longitudinal axis;
an internal sealing stent adjacent the proximal end of the graft;
a plurality of body stents distal of the internal sealing stent, the plurality of body stents having a plurality of struts and an apex between each of the plurality struts, the apices including proximal apices and distal apices;
at least one running suture attaching a body stent of plurality of body stents to the graft, the running suture comprising:
first and second knots knotted along a length of the struts of the plurality of struts at intermediate points spaced from the proximal and distal apices, wherein a length of the running suture runs between the first and second knots; and
at least one bridging portion spaced from the proximal and distal apices and more proximate the distal apices, the at least one bridging portion extending transversely between the first knot on a first strut and a first knot on a second strut next adjacent the first strut and linking the first knot on the first strut and the first knot on the second strut.

2. The stent-graft of claim 1 , wherein the at least one bridging portion comprises a plurality of bridging portions.

3. The stent graft of claim 2 , wherein each of the plurality of bridging portions extends transversely between two struts of a distal apex.

4. The stent graft of claim 2 , wherein each of the bridging portions extends between a first strut of a first distal apex and a first strut of a second distal apex.

5. The stent graft of claim 1 , wherein a length of the at least one bridging portion passes in and out of the graft between next adjacent struts.

6. The stent graft of claim 1 , further comprising a series of proximal tack knots securing the one or more of the proximal apices of the at least one body stent to the graft.

7. The stent graft of claim 1 , further comprising a series of distal tack knots securing one or more of the distal apices of the at least one body stent to the graft.

8. The stent graft of claim 7 , wherein the series of distal tack knots are configured such that the at least one body stent can slide relative to the graft.

9. The stent graft of claim 1 , further comprising a third knot in the running suture between each of the first and second knots.

10. The stent-graft of claim 1 , wherein the bridging portions are disposed transverse to the longitudinal axis of the lumen.

11. The stent graft of claim 1 , wherein each strut of the plurality of struts has a first knot and a second knot and a first bridging portion extending from the first knot and a second bridging portion extending from the second knot.

12. The stent-graft of claimed claim 1 , wherein the at least one running suture is a single continuous length of suture.

13. The stent-graft of claim 1 , wherein each of the plurality of body stents is attached to the graft by a running suture of the at least one running suture.

14. A stent-graft comprising:
a graft defining an elongate lumen having a longitudinal axis;
a proximal inflow end;
a distal outflow end;
a plurality of ring stents having a plurality of struts and apices between the struts, the apices including proximal apices and distal apices;
running sutures attaching a plurality of the plurality of ring stents to the graft, each running suture comprising:
at least first and second knots knotted along the length of each strut at intermediate points on the struts away from the proximal and distal apices;
a length of running suture running between the first and a second knots on each strut; and
a first bridging portion adjacent a first distal apex and extending transversely between a first knot of the running suture on a first strut and a first knot of the running suture on a second strut adjacent the first strut; and
a second bridging portion adjacent a second distal apex and extending transversely between a first knot on a third strut to a first knot on a fourth strut adjacent the third strut;
wherein the first bridging portion and the second bridging portion are disposed more proximate to the first and second distal apices.

15. The stent graft of claim 14 , wherein at least a portion of the first and second bridging portions passes through the graft.

16. The stent graft of claim 14 , wherein the running suture is continuous about a circumference of at least one ring stent of the plurality of ring stents.

17. A stent-graft comprising:
a graft defining an elongate lumen having a longitudinal axis;
a proximal inflow end;
a distal outflow end;
at least one stent having a plurality of struts and an apex between each of the plurality struts, the apices including proximal apices and distal apices;
a running suture attaching the at least one stent to the graft, the running suture comprising:
first and second knots knotted along a length of at least one strut of the plurality of struts at intermediate points spaced from the proximal and distal apices;
a length of running suture between the first and second knots; and
a first bridging portion extending between a first knot on a first strut and a first knot on a second strut next adjacent the first strut, and a second bridging portion extending from a first knot on a third strut to a first knot of a fourth strut next adjacent the second strut;
wherein the running suture is a single continuous length of suture; and
wherein the first bridging portion and the second bridging portion are disposed more proximate to the first and second distal apices.

18. The stent-graft of claim 17 , wherein the at least one stent comprises a plurality of stents each attached to the graft by a running suture.

19. The stent graft of claim 17 , wherein the first bridging portion extends between extends between two struts of a distal apex.

20. The stent graft of claim 17 , wherein a length of the bridging portions passes in and out of the graft between next adjacent struts.

Assignees

• Cook Medical Technologies Llc

Inventors

• King Chantelle
• Bradway Ryan
• Kratzberg Jarin
• Wilger Kevin

Classifications

• A61F2/91

  made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes · CPC title

• A61F2002/91583

  by a bridge, whereby at least one of its ends is connected along the length of a strut between two consecutive apices within a band · CPC title

• A61F2002/075

  the stent being loosely attached to the graft material, e.g. by stitching · CPC title

• A61F2220/0075

  sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable · CPC title

• A61F2/89

  the wire-like elements comprising two or more adjacent rings flexibly connected by separate members · CPC title