Hybrid Symmetrical Stent Designs

• US 20080065194A1
• Filed: 06/26/2007
• Published: 03/13/2008
• Est. Priority Date: 09/13/2006
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Tischler, Brian, Dakin, Greg
• Granted Patent: US 8,211,163 B2
• Time in Patent Office: Days
• US Class Current: 623/1.16
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2230/0054 V-shaped

Abstract

A stent has adjacent circumferential rings of struts. Adjacent rings being connected by a plurality of connectors. The stent having a hybrid of peak to valley and peak to peak connectors.

Claims

1. A stent, the stent comprising:

a first circumferential ring, a second circumferential ring, and a third circumferential ring, adjacent circumferential rings forming a first ring pair and a second ring pair, each circumferential ring comprising a plurality of struts;

a first peak to valley connector, and a second peak to valley connector, the peak to valley connectors each engaging the first ring pair, the peak to valley connectors each having a first end, each of the first ends of the peak to valley connectors separated by a first number of struts; and

a first peak to peak connector, and a second peak to peak connector, the peak to peak connectors each engaging the second ring pair, the peak to peak connectors each having a first end, each of the first ends of the peak to peak connectors separated by a second number of struts.

2. The stent of claim 1, the first number of struts different from the second number of struts.

3. The stent of claim 1, further comprising a third peak to valley connector and a third peak to peak connector.

4. The stent of claim 3, the first number of struts equal to ten and the second number of struts equal to eight.

5. The stent of claim 1, the peak to valley connectors each having a bend.

6. The stent of claim 1, the peak to peak connectors each extending circumferentially from the second circumferential ring to the third circumferential ring.

7. The stent of claim 1, the peak to peak connectors each having a bend.

8. The stent of claim 1, the struts of the first circumferential ring each having a first length, the struts of the second circumferential ring each having a second length, the first length different than the second length.

9. The stent of claim 1, wherein the peak to peak connectors extend substantially parallel to the longitudinal axis of the stent.

10. A stent, the stent comprising a first circumferential ring, a second circumferential ring, a third circumferential ring, at least two peak to valley connectors and at least two peak to peak connectors, each circumferential ring comprising a plurality of struts, the at least two peak to valley connectors engaging the first circumferential ring to the second circumferential ring, each of the at least two peak to valley connectors having a first end, an equal number of struts separating the first ends of the at least two peak to valley connectors, the at least two peak to peak connectors engaging the second circumferential ring to the third circumferential ring, each of the at least two peak to peak connectors having a first end, an equal number of struts separating the first ends of the at least two peak to peak connectors.

11. The stent of claim 10, the peak to valley connectors each having a bend.

12. The stent of claim 10, the peak to peak connectors each extending circumferentially from the second circumferential ring to the third circumferential ring.

13. The stent of claim 10, the peak to peak connectors each having a bend.

14. The stent of claim 10, the struts of the first circumferential ring each having a first length, the struts of the second circumferential ring each having a second length, the first length different than the second length.

15. The stent of claim 10, wherein the peak to peak connectors extend substantially parallel to the longitudinal axis of the stent.

16. A stent, the stent comprising:

a proximal section, the proximal section comprising a first circumferential ring, a second circumferential ring and a plurality of peak to peak connectors, each circumferential ring comprising a plurality of struts, each of the plurality of peak to peak connectors having a first end and a second end, each of the first ends of the plurality of peak to peak connectors separated by two of the plurality of struts, and each of the second ends of the plurality of peak to peak connectors separated by two of the plurality of struts;

a middle section, the middle section comprising a plurality of circumferential rings and a plurality of peak to valley connectors, adjacent circumferential rings being engaged by the plurality of peak to valley connectors;

a distal section, the distal section comprising a first circumferential ring, a second circumferential ring, and a plurality of peak to peak connectors, each circumferential ring comprising a plurality of struts, each of the plurality of peak to peak connectors having a first end and a second end, each of the first ends of the plurality of peak to peak connectors separated by two of the plurality of struts, and each of the second ends of the plurality of peak to peak connectors separated by two of the plurality of struts;

a first plurality of peak to peak connectors, the first plurality of peak to peak connectors engaging the proximal section and the middle section; and

a second plurality of peak to peak connectors, the second plurality of peak to peak connectors engaging the middle section and the distal section.

17. The stent of claim 16, the first plurality of peak to peak connectors engaging the second circumferential ring of the proximal section to a proximal circumferential ring of the middle section, the second circumferential ring of the proximal section comprising a plurality of distal peaks, the proximal circumferential ring of the middle section comprising a plurality of proximal peaks, the first plurality of peak to peak connectors, the plurality of distal peaks and the plurality of proximal peaks being equal.

18. The stent of claim 17, the second plurality of peak to peak connectors engaging the first circumferential ring of the distal section to a distal circumferential ring of the middle section, the first circumferential ring of the distal section comprising a plurality of proximal peaks, the distal circumferential ring of the middle section comprising a plurality of distal peaks, the second plurality of peak to peak connectors, the plurality of proximal peaks and the plurality of distal peaks being equal.

19. The stent of claim 16, each of the plurality of circumferential rings of the middle section comprising a plurality of struts, the plurality of peak to valley connectors of the middle section each having a first end and a second end, each of the first ends of the plurality of peak to valley connectors being separated by eight struts, and the second end of a peak to valley connector being separated by four struts from the first end of an adjacent peak to valley connector in a circumferential ring of the middle section.

20. The stent of claim 16, wherein the peak to peak connectors extend substantially parallel to the longitudinal axis of the stent.