Lumen-supporting stents

• US 20070043427A1
• Filed: 08/19/2005
• Published: 02/22/2007
• Est. Priority Date: 08/19/2005
• Status: Abandoned Application

• Current Assignee: Medlogics Device Corporation
• Original Assignee: Medlogics Device Corporation
• Inventors: Lee, Michael
• Application Number:
  US11/208,086
• Publication Number:
  US 20070043427A1
• Time in Patent Office: Days
• US Class Current: 623/1.150
• 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 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2250/0032 differing in radiographic density

Abstract

Disclosed herein are stents manufactured to include increased surface area for bioactive material deposition or enhanced radiopacity at various locations along the length of the stent. The stents of the present invention also can also be manufactured to create a less abrupt transition between stented and unstented portions of a vessel. A less abrupt transition is created by providing increased surface area for bioactive material deposition at the ends of the stent and/or providing end sections (and sections adjacent thereto) of the stents that are more flexible than more centrally located sections of the stent.

Claims

1. A stent comprising a first end, a second end, and a body wherein said body comprises struts and crowns and wherein each said strut is associated with two said crowns and wherein said first end comprises crowns and said second end comprises crowns and wherein at least one strut is wider than said strut'"'"'s corresponding crowns.

2. The stent according to claim 1, wherein said at least one strut has an associated crown that is part of said first end.

3. The stent according to claim 2, further comprising at least one additional strut that is wider than said strut'"'"'s corresponding crowns and wherein said at least one additional strut has an associated crown that is part of said second end.

4. The stent according to claim 1, further comprising at least one tab in said crown of said first end, said second end or said body.

5. A stent comprising a first end, a second end, and a body wherein said body comprises struts and crowns and wherein each strut is associated with two crowns and wherein said first end comprises crowns and said second end comprises crowns and wherein at least one of said crowns in said body, said first end or said second end comprises a tab.

6. The stent according to claim 5, wherein said tab extends inwards towards said lengthwise midpoint of said stent.

7. The stent according to claim 5, wherein said tab extends outwards, away from said lengthwise midpoint of said stent.

8. The stent according to claim 5, wherein at least one crown of said first end comprises a tab.

9. The stent according to claim 5, wherein at least every third crown of said first end comprises a tab.

10. The stent according to claim 9, wherein at least every second crown of said first end comprises a tab.

11. The stent according to claim 10, wherein every crown of said first end comprises a tab.

12. The stent according to claim 8, wherein at least every third crown of said second end comprises a tab.

13. The stent according to claim 12, wherein at least every second crown of said second end comprises a tab.

14. The stent according to claim 13, wherein every crown of said second end comprises a tab.

16. The stent according to claim 14, wherein said at least one more flexible crown and/or strut(s) is more flexible than said majority of said crowns and said struts within said stent due to being thinner in a radial direction.

17. The stent according to claim 14, wherein said at least one more flexible crown and/or strut(s) is more flexible than said majority of said crowns and said struts within said stent due to being narrower in a circumferential direction.

18. The stent according to claim 14, wherein said at least one more flexible crown and/or strut(s) is more flexible than said majority of said crowns and said struts within said stent due to being thinner in a radial direction and narrower in a circumferential direction.

19. The stent according to claim 14, wherein said at least one more flexible crown and/or strut(s) is more flexible than said majority of said crowns and said struts within said stent due to being constructed of a softer alloy.

20. The stent according to claim 14, wherein said at least one more flexible crown and/or strut(s) is more flexible than said majority of said crowns and said struts within said stent because said more flexible crown and/or strut(s) have a greater length than said majority of said crowns and said struts.

21. The stent according to claim 14, further comprising at least one strut in said body that is wider than said strut'"'"'s corresponding crowns.

22. The stent according to claim 14, wherein said at least one crown and/or its associated strut(s) is a crown within said first end of said stent.

23. The stent according to claim 14, further comprising at least one tab in a crown of said first end, said second end or said body.

15. A stent comprising a first end, a second end, and a body, wherein said body comprises struts and crowns and wherein each strut is associated with two crowns and wherein said first end comprises crowns and said second end comprises crowns and wherein at least one crown and/or its associated strut(s) are more flexible than the majority of said crowns and said struts within said stent.