Coronary stent

• US 6,017,365 A
• Filed: 05/20/1998
• Issued: 01/25/2000
• Est. Priority Date: 05/20/1997
• Status: Expired due to Term

• Current Assignee: Abbott Laboratories Limited (Abbott Laboratories Incorporated)
• Original Assignee: Jomed Implantate GmbH
• Inventors: Von Oepen, Randolf
• Primary Examiner(s): Yu, Mickey
• Assistant Examiner(s): STEWART, ALVIN J
• Application Number:
  US09/093,844
• Time in Patent Office: 615 Days
• Field of Search: 623/1, 623/12, 606/194, 606/198
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• 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 2002/91525 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 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2250/0029 differing in bending or flexure capacity

Abstract

A coronary stent having a tubular body is disclosed. The tubular body has a wall which has a web structure and a flexible tip at at least one of its front ends. The web structure has a plurality of neighboring cells that are defined by webs.

Claims

1. A coronary stent comprising

a tubular body having a first end and a second end in which said tubular body is formed of a web structure, said web structure comprising a plurality of first main web patterns extending in a circumferential direction and a plurality of second main web patterns extending in a circumferential direction, said second main web patterns being different than said first main web patterns and being alternatingly coupled between adjacent pairs of said first main web patterns to form a plurality of neighboring cells, said first and second main web patterns having axial lengths;

and

a flexible tip having a first short-legged web pattern with an axial length, said first short-legged web pattern being coupled to at least one of said ends of said tubular body by a row of first connectors, said flexible tip further comprising a second short-legged web pattern with an axial length and at least one further row of second connectors, said second connectors being coupled between said first short-legged web pattern and said second short-legged web pattern, said axial lengths of said first and second short-legged web patterns being shorter in an axial direction than said axial lengths of said first and second main web patterns.

2. A coronary stent according to claim 1, wherein said first connectors are wound in s-shaped fashion.

3. A coronary stent according to claim 1, wherein said second connectors are wound in s-shaped fashion.

4. A coronary stent according to claim 2, wherein said second connectors are wound in s-shaped fashion.

5. A coronary stent according to claim 4, wherein said first connectors are wound in an opposite direction from said second connectors.

6. A coronary stent according to claim 1, wherein said first and second connectors are formed as spring elements of high elasticity.

7. A coronary stent according to claim 1, wherein said first and second main web patterns are zig-zag shaped band portions.

8. A coronary stent according to claim 7, wherein said first and second short-legged web patterns are zig-zag shaped band portions.

9. A coronary stent according to claim 7, wherein said first main web pattern is phase-shifted from said second main web pattern.

10. A coronary stent according to claim 7, wherein said first and second connectors are not axially aligned with each other.

11. A coronary stent according to claim 7, wherein said first main web pattern is different from said second main web pattern.

12. A coronary stent according to claim 9, wherein said first connectors are wound in s-shaped fashion.

13. A coronary stent according to claim 9, wherein said second connectors are wound in s-shaped fashion.

14. A coronary stent according to claim 12, wherein said second connectors are wound in s-shaped fashion.

15. A coronary stent according to claim 14, wherein said first connectors are wound in an opposite direction from said second connectors.

16. A coronary stent according to claim 14, wherein said first and second connectors are not axially aligned with each other.

17. A coronary stent according to claim 14, wherein said first main web pattern is different from said second main web pattern.

18. A coronary stent according to claim 1, wherein said first and second short-legged web patterns are zig-zag shaped band portions.

19. A coronary stent according to claim 18, wherein said first short-legged web pattern is phase shifted from said second short-legged web pattern.

20. A coronary stent according to claim 19, wherein said first connectors are wound in s-shaped fashion.

21. A coronary stent according to claim 20, wherein said second connectors are wound in s-shaped fashion.

22. A coronary stent according to claim 21, wherein said first connectors are wound in an opposite direction from said second connectors.

23. A coronary stent according to claim 21, wherein said first and second connectors are not axially aligned with each other.

24. A coronary stent according to claim 23, wherein said first main web pattern is different from said second main web pattern.

25. A coronary stent according to claim 23, wherein said first and second main web patterns are zig-zag shaped band portions.