Expansible neck bridge

• US 20060106421A1
• Filed: 11/16/2004
• Published: 05/18/2006
• Est. Priority Date: 11/16/2004
• Status: Abandoned Application

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Inventors: Teoh, Clifford
• Application Number:
  US10/990,163
• Publication Number:
  US 20060106421A1
• Time in Patent Office: Days
• US Class Current: 606/213
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12177 comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated
• CPC Class Codes: A61B 17/12186 liquid materials adapted to be injected
• CPC Class Codes: A61B 17/1219 expandable in contact with liquids
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

This is a medical device for bridging, and at least partially obstructing, the neck of a vascular aneurysm. In general, it is a device used to stabilize the presence of vaso-occlusive devices (such as helically wound coils) in the aneurysm. The device forms a support framework, including a base and strut(s) extending from and fixed to the base. It also includes swellable material selectively attached to the struts covering the neck portion of the aneurysm. The device, placed inside the aneurysm sac, provides therapeutic effect to the aneurysm.

Claims

1. An apparatus for bridging a neck of an aneurysm, comprising:

a base section;

at least one strut extending outwardly from the base section;

wherein the at least one strut is configured to be lodged inside an aneurysm substantially bridging the neck of the aneurysm; and

a swellable material selectively disposed on the at least one strut.

2. The apparatus of claim 1, wherein said base section is made of a super-elastic alloy.

3. The apparatus of claim 1, wherein said base section is made of stainless steel.

4. The apparatus of claim 1, wherein said base section is made of shape memory polymer.

5. The apparatus of claim 1, further comprising a radio-opaque marker attached to the base section.

6. The apparatus of claim 1, further comprising a detachable joint connected to the base section.

7. The apparatus of claim 1, wherein said at least one strut reconnects to said base section forming a loop.

8. The apparatus of claim 1, wherein said at least one strut is made of a super-elastic alloy.

9. The apparatus of claim 1, wherein said at least one strut is made of stainless steel.

10. The apparatus of claim 1, wherein said at least one strut is made of shape memory polymer.

11. The apparatus of claim 1, further comprising a radio-opaque marker attached to at least one strut.

12. The apparatus of claim 9, wherein said radio-opaque marker is made of platinum.

13. The apparatus of claim 1, wherein said swellable material is a hydrogel.

14. The apparatus of claim 11, wherein said swellable material is selected from the group comprising collagen, gelatin, fibrin, polyethylene oxide, polyacrylic acid, polyacrylamide, poly(sodium-4-styrenesulfonate), poly(3-hydroxybutyric acid), polyvinylpyrrolidone and 2-hydroxyethyl methacrylate.

15. The apparatus of claim 11, wherein said swellable material further comprises a bioactive material.

16. The apparatus of claim 15, wherein said bioactive material is selected from the group comprising cytokines, growth factors, extracellular matrix molecules, proteins, enzymes, enzyme inhibitors, receptors, cells, polynucleic acids, lipid-based molecules, polysaccharides and drugs.

17. The apparatus of claim 1, wherein the swellable material is disposed on the at least one strut at the neck of an aneurysm.

18. The apparatus of claim 1, wherein said swellable material further comprises a geometry for directing expansion.

19. An apparatus for bridging a neck of an aneurysm, comprising:

a base section;

a plurality of struts extending from the base section forming a plurality of loops;

wherein the plurality of struts are configured to be lodged inside an aneurysm substantially bridging the neck of an aneurysm; and

a swellable material selectively disposed on the plurality of struts at the neck of the aneurysm.

20. The apparatus of claim 19, wherein said base section is made of a super-elastic alloy.

21. The apparatus of claim 19, wherein said base section is made of stainless steel.

22. The apparatus of claim 19, wherein said base section is made of shape memory polymer.

23. The apparatus of claim 19, further comprising a detachable joint connected to said base section.

24. The apparatus of claim 23, wherein the detachable joint can be electrolytically activated.

25. The apparatus of claim 19, further comprising a radio-opaque marker attached to the base section.

26. The apparatus of claim 25, wherein said radio-opaque marker is made of platinum.

27. The apparatus of claim 19, wherein the plurality of struts is three struts.

28. The apparatus of claim 19, wherein said plurality of struts is made of a super-elastic alloy.

29. The apparatus of claim 19, wherein said plurality of struts is made of stainless steel.

30. The apparatus of claim 19, wherein said plurality of struts is made of shape memory polymer.

31. The apparatus of claim 19, further comprising a radio-opaque marker attached to the plurality of struts.

32. The apparatus of claim 31, wherein said radio-opaque marker is made of platinum.

33. The apparatus of claim 19, wherein said swellable material is a hydrogel.

34. The apparatus of claim 33, wherein said swellable material is selected from the group comprising collagen, gelatin, fibrin, polyethylene oxide, polyacrylic acid, polyacrylamide, poly(sodium-4-styrenesulfonate), poly(3-hydroxybutyric acid), polyvinylpyrrolidone and 2-hydroxyethyl methacrylate.

35. The apparatus of claim 33, wherein said swellable material further comprises a bioactive material.

36. The apparatus of claim 35, wherein said bioactive material is selected from the group comprising cytokines, growth factors, extracellular matrix molecules, proteins, enzymes, enzyme inhibitors, receptors, cells, polynucleic acids, lipid-based molecules, polysaccharides and drugs.

37. The apparatus of claim 19, wherein said swellable material further comprises a geometry for directing expansion.