Foldable vaso-occlusive member

• US 7,060,083 B2
• Filed: 05/20/2002
• Issued: 06/13/2006
• Est. Priority Date: 05/20/2002
• Status: Expired due to Fees

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Gerberding, Brent
• Primary Examiner(s): Jackson, Gary
• Application Number:
  US10/152,441
• Publication Number:
  US 20030216757A1
• Time in Patent Office: 1,485 Days
• Field of Search: 606/200, 606/191
• US Class Current: 606/200
• 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 17/12145 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/1215 comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated
• CPC Class Codes: A61B 17/12154 having stretch limiting means
• CPC Class Codes: A61B 17/12168 having a mesh structure A61B17/1214 takes precedence
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526

Abstract

Vaso-occlusive devices for occlusion of a body cavity are provided. The vaso-occlusive devices include an elongate vaso-occlusive member having one or more fold lines. Methods of using the vaso-occlusive devices are also described.

Claims

1. A vaso-occlusive device, comprising:

an elongate vaso-occlusive member, the vaso-occlusive member capable of assuming a desired folded configuration when the vaso-occlusive member is subjected to a force or pressure;

wherein the vaso-occlusive member defines and axis, and comprises a key-way that is disposed continuously along the axis of the vaso-occlusive member.

2. The vaso-occlusive device of claim 1, wherein the key-way has a cross-sectional shape that is substantially rectangular.

3. The vaso-occlusive device of claim 1, wherein the key-way has a cross-sectional shape tat is substantially triangular.

4. The vaso-occlusive device of claim 1, wherein a width of the key-way varies.

5. The vaso-occlusive device of claim 1, wherein a depth of the key-way varies.

6. The vaso-occlusive device of claim 1, wherein the key-way exhibits a pitch.

7. The vaso-occlusive device of claim 6, wherein the pitch of the key-way varies.

8. The vaso-occlusive device of claim 6, wherein the pitch of the key-way is constant.

9. The vaso-occlusive device of claim 1, wherein the key-way is disposed along a portion of the vaso-occlusive member in a helical fashion.

10. The vaso-occlusive device of claim 1, wherein pitch of the key-way is relatively tight along a portion of the vaso-occlusive member.

11. The vaso-occlusive device of claim 1, further comprising another key-way disposed continuously along a portion of the vaso-occlusive member.

12. The vaso-occlusive device of claim 11, wherein the key-way and the other key-way are axially spaced from each other.

13. The vaso-occlusive device of claim 11, wherein the key-way and the other key-way intersect.

14. The vaso-occlusive device of claim 1, wherein the key-way is disposed discretely along the vaso-occlusive member.

15. The vaso-occlusive device of claim 14, wherein the key-way is partially disposed about a portion of the circumference of the vaso-occlusive member.

16. The vaso-occlusive device of claim 14, wherein the key-way is completely disposed about the circumference of the vaso-occlusive member.

17. The vaso-occlusive device of claim 14, further comprising another key-way disposed discretely along the vaso-occlusive member.

18. The vaso-occlusive device of claim 17, wherein the key-way and the another key-way are closely spaced.

19. The vaso-occlusive device of claim 1, wherein the vaso-occlusive member is made of a biodegradable material.

20. The vaso-occlusive device of claim 1, wherein the vaso-occlusive member comprises a metal selected from the group consisting of platinum, palladium, rhodium, gold, tungsten, and their alloys.

21. The vaso-occlusive device of claim 20, wherein the vaso-occlusive member comprises an alloy of platinum and tungsten.

22. The vaso-occlusive device of claim 1, wherein the vaso-occlusive member comprises an alloy selected from stainless steels and super-elastic alloys.

23. The vaso-occlusive device of claim 22, wherein the vaso-occlusive member comprises nitinol.

24. The vaso-occlusive device of claim 1, wherein the vaso-occlusive member is substantially rectilinear when in a relaxed configuration.

25. The vaso-occlusive device of claim 1, wherein the vaso-occlusive member is substantially curvilinear when in a relaxed configuration.

26. The vaso-occlusive device of claim 1, wherein the vaso-occlusive member has a secondary relaxed configuration.

27. The vaso-occlusive device of claim 26, wherein the vaso-occlusive member is a helically wounded coil in the secondary relaxed configuration.

28. The vaso-occlusive device of claim 26, wherein the vaso-occlusive member has a tertiary relaxed configuration.

29. The vaso-occlusive device of claim 1, wherein the vaso-occlusive member is coupled to a deployment mechanism.

30. The vaso-occlusive device of claim 29, wherein the deployment mechanism comprises an electrolytically severable junction adapted to detach from a core wire by imposition of an electric current on the core wire.

31. The vaso-occlusive device of claim 1, wherein the vaso-occlusive member is sized to fit within an aneurysm.

32. The vaso-occlusive device of claim 1, wherein a discrete portion of the vaso-occlusive member is made of a relatively flexible material for allowing the vaso-occlusive member to bend at the discrete portion.

33. A catheter assembly for occluding a body cavity, comprising:

a delivery catheter having a distal end; and

a vaso-occlusive device detachably coupled to the distal end of the catheter, the vaso-occlusive device defines and axis, and comprising an elongate vaso-occlusive member, the vaso-occlusive member having a fold line, wherein the vaso-occlusive member comprises a key-way for forming the fold line, and the key-way is disposed continuously along the axis of the vaso-occlusive member.

34. The catheter assembly of claim 33, wherein the key-way has a cross-sectional shape that is substantially rectangular.

35. The catheter assembly of claim 33, wherein the key-way has a cross-sectional shape that is substantially triangular.

36. The catheter assembly of claim 33, wherein a width of the key-way varies.

37. The catheter assembly of claim 33 wherein a depth of the key-way varies.

38. The catheter assembly of claim 33 wherein the key-way exhibits a pitch.

39. The catheter assembly of claim 38, wherein the pitch of the key-way varies.

40. The catheter assembly of claim 38, wherein the pitch of the key-way is constant.

41. The catheter assembly of claim 33, wherein the key-way is disposed along a portion of the vaso-occlusive member in a helical fashion.

42. The catheter assembly of claim 33, wherein pitch of the key-way is relatively tight along a portion of the vaso-occlusive member.

43. The catheter assembly of claim 33, wherein the vaso-occlusive device further comprises another key-way disposed continuously along a portion of the vaso-occlusive member.

44. The catheter assembly of claim 43, wherein the key-way and the other key-way are axially spaced from each other.

45. The catheter assembly of claim 43, wherein the key-way and the other key-way intersect.

46. The catheter assembly of claim 33, wherein the key-way is disposed discretely along the vaso-occlusive member.

47. The catheter assembly of claim 46, wherein the key-way is partially disposed about a portion of the circumference of the vaso-occlusive member.

48. The catheter assembly of claim 46, wherein the key-way is completely disposed about the circumference of the vaso-occlusive member.

49. The catheter assembly of claim 46, wherein the vaso-occlusive device further comprises another key-way disposed discretely along the vaso-occlusive member.

50. The catheter assembly of claim 49, wherein the key-way and the another key-way are closely spaced.

51. The catheter assembly of claim 49, wherein the vaso-occlusive member is made of a biodegradable material.

52. The catheter assembly of claim 33, wherein the vaso-occlusive member comprises a metal selected from the group consisting of platinum, palladium, rhodium, gold, tungsten, and their alloys.

53. The catheter assembly of claim 52, wherein the vaso-occlusive member comprises an alloy of platinum and tungsten.

54. The catheter assembly of claim 33, wherein the vaso-occlusive member comprises an alloy selected from stainless steels and super-elastic alloys.

55. The catheter assembly of claim 54, wherein the vaso-occlusive member comprises nitinol.

56. The catheter assembly of claim 33, wherein the vaso-occlusive member is substantially rectilinear when in a relaxed configuration.

57. The catheter assembly of claim 33, wherein the vaso-occlusive member is substantially curvilinear when in a relaxed configuration.

58. The catheter assembly of claim 33, wherein the vaso-occlusive member has a secondary relaxed configuration.

59. The catheter assembly of claim 58, wherein the vaso-occlusive member is a helically wounded coil in the secondary relaxed configuration.

60. The catheter assembly of claim 58, wherein the vaso-occlusive member has a tertiary relaxed configuration.

61. The catheter assembly of claim 33, further comprising a deployment mechanism coupled to a proximal end of the vaso-occlusive member.

62. The catheter assembly of claim 61, wherein the deployment mechanism comprises an electrolytically severable junction adapted to detach from a core wire by imposition of an electric current on the core wire.

63. The catheter assembly of claim 33, wherein the vaso-occlusive member is sized to fit within an aneurysm.

64. The catheter assembly of claim 33, wherein a portion of the vaso-occlusive member is made of a relatively weaker material for forming the fold line.