NON-DESTRUCTIVE TISSUE REPAIR AND REGENERATION

• US 20110153000A1
• Filed: 03/04/2011
• Published: 06/23/2011
• Est. Priority Date: 04/26/2004
• Status: Abandoned Application

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Inventors: Schwartz, Herbert E.
• Application Number:
  US13/040,682
• Publication Number:
  US 20110153000A1
• Time in Patent Office: Days
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/02 Prostheses implantable into the body closure means for urethra or rectum or for artificial body openings therefor A61F2/0004
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/2493 Transmyocardial revascularisation [TMR] devices
• CPC Class Codes: A61F 2/3872 Meniscus for implantation between the natural bone surfaces
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2002/30761 Support means for artificial cartilage, e.g. cartilage defect covering membranes
• CPC Class Codes: A61F 2002/30766 Scaffolds for cartilage ingrowth and regeneration
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing

Abstract

A surgical stent made of biocompatible material for implantation in human tissue to enable blood and nutrients to flow from an area of vascular tissue to an area of tissue with little or no vasculature.

Claims

1. A stent, comprising:

an elongate body formed of a bioabsorbable material, said elongate body having a first end, a second end, an exterior surface and a length, said elongate body configured to allow passage of fluid therethrough, said elongate body formed of a material of sufficient rigidity so that the elongate body is at least as stiff as meniscal tissue.

2. The stent of claim 1, wherein said elongate body comprises a hollow tube which is open at both the first end and the second end of the elongate body to define end apertures.

3. The stent of claim 2, wherein a wall forming the hollow tube includes a plurality of apertures sized to enable blood, nutrients and cells to enter the elongate body from a vascular area of tissue.

4. The stent of claim 1, wherein said exterior surface of the elongate body includes a rib.

5. The stent of claim 4, wherein said exterior surface of the elongate body includes a plurality of ribs that encircle the outer surface.

6. The stent of claim 4, wherein the rib comprises a thread.

7. The stent of claim 6, wherein the thread has a consistent pitch.

8. The stent of claim 1, wherein the elongate body includes a collar for limiting the travel of the stent into tissue.

9. The stent of claim 1, wherein said elongate body has an outer diameter over the length of the elongate body from a larger value at the first end of the elongate body to a smaller value at the second end of the elongate body.

10. The stent of claim 9, further comprising a thread extending from an outer surface of said elongate body, said thread defining the larger value of said outer diameter.

11. A stent, comprising:

an elongate body formed of a bioabsorbable material, said elongate body having a first end, a second end, an exterior surface and a length, said elongate body configured to allow passage of fluid therethrough; and

securing means for securing said elongate body in an area of tissue.

12. The stent of claim 11, wherein said elongate body comprises a hollow tube which is open at both the first end and the second end of the elongate body to define end apertures.

13. The stent of claim 12, wherein a wall forming the hollow tube includes a plurality of apertures sized to enable blood, nutrients and cells to enter the elongate body from a vascular area of tissue.

14. The stent of claim 11, wherein said securing means comprises a rib extending from said exterior surface of the elongate body.

15. The stent of claim 14, wherein said securing means comprises a plurality of ribs extending from said exterior surface of the elongate body that encircle the outer surface.

16. The stent of claim 14, wherein the rib comprises a thread.

17. The stent of claim 16, wherein the thread has a consistent pitch.

18. The stent of claim 11, wherein the elongate body includes a collar for limiting the travel of the stent into tissue.

19. The stent of claim 11, wherein said securing means comprises a fastener operable to secure said elongate body in an area of tissue.

20. The stent of claim 11, wherein said elongate body has an outer diameter varying over the length of the elongate body from a larger value at the first end of the elongate body to a smaller value at the second end of the elongate body, said elongate body configured to allow passage of fluid therethrough.

21. The stent of claim 20, further comprising a thread extending from an outer surface of said elongate body, said thread defining the larger value of said outer diameter.

22. A stent, comprising:

an elongate body formed of a bioabsorbable material, said elongate body comprising;

a first end;

a second end;

an exterior surface, said elongate body having an outer diameter and a length, said elongate body comprising a hollow tube which is open at both the first end and the second end of the elongate body to define end apertures, whereby said elongate body allows passage of fluid therethrough, said elongate body formed of a material of sufficient rigidity so that the elongate body is at least as stiff as meniscal tissue, a wall forming the hollow tube;

securing means for securing said elongate body in an area of tissue; and

an interior surface defining said hollow tube, said interior surface defining a non-circular cross-section.

23. The stent of claim 22, wherein said outer diameter of said elongate body varies over the length of the elongate body from a larger value at the first end of the elongate body to a smaller value at the second end of the elongate body.

24. The stent of claim 22, further comprising a rib extending from said exterior surface of said elongate body, said rib forming a consistently-pitched thread about said exterior surface of said elongate body.