Micro structure stent configurations

• US 6,428,569 B1
• Filed: 11/09/1999
• Issued: 08/06/2002
• Est. Priority Date: 11/09/1999
• Status: Expired due to Term

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Brown, Brian J.
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US09/437,049
• Time in Patent Office: 1,001 Days
• Field of Search: 623/1.15, 623/1.16, 623/1.17, 623/1.1, 606/191, 606/198, 606/195
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/852 Two or more distinct overlapping stents
• 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 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/9155 Adjacent bands being connected to each other
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2250/0018 differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2250/0023 differing in porosity
• CPC Class Codes: A61F 2250/0029 differing in bending or flexure capacity
• CPC Class Codes: A61F 2250/0036 differing in thickness
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61F 2250/0063 Nested prosthetic parts
• CPC Class Codes: A61F 2250/0067 Means for introducing or releasing pharmaceutical products into the body

Abstract

Fine structure stents physiologically acceptable to the body.

Claims

1. A stent of closed cylindrical construction comprised of a plurality of interconnected, deformable struts arranged with respect to each other to provide a micro structure which facilitates support with minimal disruption in a vessel or other body conduit, the micro structure being characterized, after expansion, by about the following dimensions:

2. The stent of claim 1 comprised of at least two stent bodies combined one within the other.

3. The stent of claim 2 in which the bodies are combined so as to present the openings therein out of register with respect to one another.

4. The stent of claim 2 wherein the openings are in register with respect to each other.

5. The stent of claim 2 wherein, a first stent body positioned internally of a second stent body for simultaneous implantation.

6. The stent of claim 5 wherein the first stent body is only partially within the second stunt body.

7. The stent of claim 5 wherein both of the stent bodies are of the type including a plurality of annular segments.

8. The stent claim 7 wherein the first stent body is arranged within the second stent body such that its annular segments bridge gaps between the annular segments of the second stent body.

9. A stent comprised of a closed cylindrical body having openings therin, the openings, upon expansion of the stent, being characterized by about the following dimensions:

10. The stent of claim 9 comprised of at least two stent bodies combined one within the other.

11. The stent of claim 9 in which the bodies are combined so as to present the openings therein out of register with respect to one another.

12. The stent of claim 9 wherein the openings are in register with respect to each other.

13. A stent of closed cylindrial construction comprised of a plurality of interconnected, deformable struts arranged with respect to each other to provide a micro structure, the micro structure having a plurality of openings therein, the micro structure constructed and arranged to provide support to a vessel or other body conduit while minimally interfering therewith, wherein upon expansion of the stent, the opening are characterized by having a maximum opening of 0.020″

.

14. The stent of claim 13 comprised of at least two stent bodies combined one within the other.

15. The stent of claim 14 in which the bodies are combined so as to present the openings therein out of register with respect to one another.

16. The stent of claim 14 wherein the openings are in register with respect to each other.

17. The stent of claim 13 wherein the struts having a predetermined width between approximately 0.00025″

-0.002″

.

18. The stent of claim 17 comprised of at least two stent bodies combined one within the other.

19. The stent of claim 17 in which the bodies are combined so as to present the openings therein out of register with respect to one another.

20. The stent of claim 17 wherein the openings are in register with respect to each other.

21. The stent of claim 13 wherein the struts having a predetermined thickness between approximately 0.00025″

-0.004″

.

22. In combination, a first stent positioned internally of a second stent for simultaneous implantation, the first and second stent comprising a plurality of deformable struts arranged with respect to each other to provide a micro structure, the micro structure having a plurality of openings therein, the micro structure constructed and arranged to provide support to a vessel or other body conduit while minimally interfering therewith, wherein upon expansion of the stent, the openings are characterized by having a maximum opening of 0.020″

.

23. The combination of claim 22 wherein, the struts having a predetermined width between approximately 0.00025″

-0.002″

.

24. The combination of claim 22 wherein, the struts having a predetermined thickness between approximately 0.00025″

-0.004″

.