NON-FORESHORTENING INTRALUMINAL PROSTHESIS

• US 20010047200A1
• Filed: 10/13/1999
• Published: 11/29/2001
• Est. Priority Date: 10/13/1999
• Status: Abandoned Application

• Current Assignee: Endosystems LLC, Pharmacia & Upjohn AB (Pharmacia Corp.)
• Original Assignee: Raymond Sun
• Inventors: Redmond, Russell J., Plyley, Alan K., White, Geoffrey Hamilton
• Application Number:
  US09/416,994
• Publication Number:
  US 20010047200A1
• Time in Patent Office: Days
• US Class Current: 623/1.15
• 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 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91516 the meander having a change in frequency along the band
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/9155 Adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped

Abstract

A stent has a plurality of cells disposed about the circumference of the stent, with at least one cell having a plurality of struts that are connected together to form the cell. At least one strut has a portion that compensates for foreshortening of the struts during expansion of the stent.

Claims

1. A stent comprising:

a plurality of cells disposed about the circumference of the stent, with at least one cell having a plurality of struts that are connected together to form the cell, with at least one strut having a compensating portion that compensates for foreshortening of the struts during expansion of the stent.

2. The stent of

claim 1

, further including a connecting member for coupling two adjacent cells.

3. The stent of

claim 1

, wherein the compensating portion has at least one area of inflection.

4. The stent of

claim 1

, wherein the compensating portion has an internal area of inflection and an external area of inflection.

5. The stent of

claim 1

, wherein each of the struts has a compensating portion.

6. The stent of

claim 1

, wherein each of the plurality of cells has four struts that define a generally diamond-shaped configuration having four apices, with a compensating portion provided at one of the apices.

7. The stent of

claim 6

, wherein a compensating portion is provided at two of the apices.

8. The stent of

claim 6

, wherein a compensating portion is provided at all the apices.

9. The stent of

claim 6

, wherein the compensating portion is C-shaped.

10. The stent of

claim 6

, wherein the compensating portion is connects apices between two adjacent cells.

11. The stent of

claim 10

, wherein the compensating portion is S-shaped.

12. The stent of

claim 10

, wherein the compensating portion is C-shaped.

13. The stent of

claim 1

, wherein each strut is completely curved.

14. The stent of

claim 1

, wherein the plurality of cells is a first plurality of cells that defines a first plurality of rows and columns, and wherein the stent further includes a second plurality of cells that defines a second plurality of rows and columns.

15. The stent of

claim 14

, wherein the configuration of the first plurality of cells is a substantial mirror image of the second plurality of cells.

16. The stent of

claim 1

, wherein the plurality of cells is a first plurality of cells that is provided along a first length of the stent, and wherein the stent further includes a second plurality of cells that-is provided along a second length of the stent.

17. The stent of

claim 1

, wherein the compensating portion is curved.

18. The stent of

claim 1

, wherein each cell has a plurality of apices that are defined by the plurality of struts, and each of the plurality of struts includes a first strut and a second strut to define a double-strut configuration, with each of the first and second struts having a first end and a second end, wherein the first ends of the first and second struts are connected to a first apex, and the second ends of the first and second struts are connected to a second apex.

19. The stent of

claim 18

, wherein the first and second struts of each of the plurality of struts defines a space therebetween.

20. A stent comprising a plurality of cells disposed about the circumference of the stent, with at least one cell having a plurality of double-struts that are connected together to form the cell.

21. The stent of

claim 20

, wherein each cell has a plurality of apices that are defined by the plurality of double-struts, and with each of double-struts having a first end and a second end, wherein the first ends of the double-struts are connected to a first apex, and the second ends of the double-struts are connected to a second apex.

22. The stent of

claim 21

, wherein each double-strut defines a space therebetween.