Foldable vaso-occlusive member

• US 20030216757A1
• Filed: 05/20/2002
• Published: 11/20/2003
• Est. Priority Date: 05/20/2002
• Status: Active Grant

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Gerberding, Brent
• Granted Patent: US 7,060,083 B2
• Time in Patent Office: Days
• US Class Current: 606/151
• 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.

2. The vaso-occlusive device of claim 1, wherein the vaso-occlusive member comprises a key-way.

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

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

5. The vaso-occlusive device of claim 2, wherein a width of the key-way varies.

6. The vaso-occlusive device of claim 2, wherein a depth of the key-way varies.

7. The vaso-occlusive device of claim 2, wherein the key-way exhibits a pitch.

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

9. The vaso-occlusive device of claim 7, wherein the pitch of the key-way is constant.

10. The vaso-occlusive device of claim 2, wherein the key-way is disposed continuously along a portion of the vaso-occlusive member.

11. The vaso-occlusive device of claim 10, wherein the key-way is disposed along a portion of the vaso-occlusive member in a helical fashion.

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

13. The vaso-occlusive device of claim 10, further comprising another key-way disposed continuously along a portion of the vaso-occlusive member.

14. The vaso-occlusive device of claim 13, wherein the key-way and the other key-way are axially spaced from each other.

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

16. The vaso-occlusive device of claim 2, wherein the key-way is disposed discretely along the vaso-occlusive member.

17. The vaso-occlusive device of claim 16, wherein the key-way is partially disposed about a portion of the circumference of the vaso-occlusive member.

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

19. The vaso-occlusive device of claim 16, further comprising another key-way disposed discretely along the vaso-occlusive member.

20. The vaso-occlusive device of claim 19, wherein the key-way and the another key-way are closely spaced.

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

22. 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.

23. The vaso-occlusive device of claim 22, wherein the vaso-occlusive member comprises an alloy of platinum and tungsten.

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

25. The vaso-occlusive device of claim 24, wherein the vaso-occlusive member comprises nitinol.

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

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

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

29. The vaso-occlusive device of claim 28, wherein the vaso-occlusive member is a helically wounded coil in the secondary relaxed configuration.

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

31. The vaso-occlusive device of claim 1, further comprising a deployment mechanism coupled to a proximal end of the vaso-occlusive member.

32. The vaso-occlusive device of claim 31, 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.

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

34. 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.

35. A vaso-occlusive device, comprising:

an elongate vaso-occlusive member; and

means for forming one or more fold lines on the vaso-occlusive member.

36. The vaso-occlusive device of claim 35, wherein the one or more fold lines are directional.

37. The vaso-occlusive device of claim 35, wherein the one or more fold lines are non-directional.

38. The vaso-occlusive device of claim 35, wherein the vaso-occlusive member is substantially rectilinear when in a relaxed configuration.

39. The vaso-occlusive device of claim 35, wherein the vaso-occlusive member is substantially curvilinear when in a relaxed configuration.

40. The vaso-occlusive device of claim 35, wherein the vaso-occlusive member is made of a biodegradable material.

41. The vaso-occlusive device of claim 35, wherein the vaso-occlusive member comprises a metal selected from the group consisting of platinum, palladium, rhodium, gold, tungsten, and their alloys.

42. A method for deploying a vaso-occlusive device having a key-way, comprising:

placing the vaso-occlusive device within a lumen of a delivery catheter;

positioning the delivery catheter adjacent an opening of a body cavity;

advancing the vaso-occlusive device within the lumen of the delivery catheter until the vaso-occlusive device encounters an object outside the delivery catheter; and

pushing the vaso-occlusive device subsequent to the advancing, thereby allowing the vaso-occlusive device to bend within the body cavity in a desired bending plane created by the key-way.

43. The method as in claim 42, wherein either or both of the advancing and pushing comprises using a guidewire.

44. The method as in claim 42, wherein either or both of the advancing and pushing comprises using fluid pressure.

45. The method of claim 42, wherein the body cavity comprises an anuerysm.

46. 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 comprising an elongate vaso-occlusive member, the vaso-occlusive member having a fold line.

47. The vaso-occlusive device of claim 46, wherein the vaso-occlusive member comprises a key-way for forming the fold line.

48. The vaso-occlusive device of claim 47, wherein the key-way has a cross-sectional shape that is substantially rectangular.

49. The vaso-occlusive device of claim 47, wherein the key-way has a cross-sectional shape that is substantially triangular.

50. The vaso-occlusive device of claim 47, wherein a width of the key-way varies.

51. The vaso-occlusive device of claim 47, wherein a depth of the key-way varies.

52. The vaso-occlusive device of claim 47, wherein the key-way exhibits a pitch.

53. The vaso-occlusive device of claim 52, wherein the pitch of the key-way varies.

54. The vaso-occlusive device of claim 52, wherein the pitch of the key-way is constant.

55. The vaso-occlusive device of claim 47, wherein the key-way is disposed continuously along a portion of the vaso-occlusive member.

56. The vaso-occlusive device of claim 55, wherein the key-way is disposed along a portion of the vaso-occlusive member in a helical fashion.

57. The vaso-occlusive device of claim 55, wherein pitch of the key-way is relatively tight along a portion of the vaso-occlusive member.

58. The vaso-occlusive device of claim 55, further comprising another key-way disposed continuously along a portion of the vaso-occlusive member.

59. The vaso-occlusive device of claim 58, wherein the key-way and the other key-way are axially spaced from each other.

60. The vaso-occlusive device of claim 58, wherein the key-way and the other key-way intersect.

61. The vaso-occlusive device of claim 47, wherein the key-way is disposed discretely along the vaso-occlusive member.

62. The vaso-occlusive device of claim 61, wherein the key-way is partially disposed about a portion of the circumference of the vaso-occlusive member.

63. The vaso-occlusive device of claim 61, wherein the key-way is completely disposed about the circumference of the vaso-occlusive member.

64. The vaso-occlusive device of claim 61, further comprising another key-way disposed discretely along the vaso-occlusive member.

65. The vaso-occlusive device of claim 64, wherein the key-way and the another key-way are closely spaced.

66. The vaso-occlusive device of claim 46, wherein the vaso-occlusive member is made of a biodegradable material.

67. The vaso-occlusive device of claim 46, wherein the vaso-occlusive member comprises a metal selected from the group consisting of platinum, palladium, rhodium, gold, tungsten, and their alloys.

68. The vaso-occlusive device of claim 67, wherein the vaso-occlusive member comprises an alloy of platinum and tungsten.

69. The vaso-occlusive device of claim 46, wherein the vaso-occlusive member comprises an alloy selected from stainless steels and super-elastic alloys.

70. The vaso-occlusive device of claim 69, wherein the vaso-occlusive member comprises nitinol.

71. The vaso-occlusive device of claim 46, wherein the vaso-occlusive member is substantially rectilinear when in a relaxed configuration.

72. The vaso-occlusive device of claim 46, wherein the vaso-occlusive member is substantially curvilinear when in a relaxed configuration.

73. The vaso-occlusive device of claim 46, wherein the vaso-occlusive member has a secondary relaxed configuration.

74. The vaso-occlusive device of claim 73, wherein the vaso-occlusive member is a helically wounded coil in the secondary relaxed configuration.

75. The vaso-occlusive device of claim 73, wherein the vaso-occlusive member has a tertiary relaxed configuration.

76. The vaso-occlusive device of claim 46, further comprising a deployment mechanism coupled to a proximal end of the vaso-occlusive member.

77. The vaso-occlusive device of claim 76, 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.

78. The vaso-occlusive device of claim 46, wherein the vaso-occlusive member is sized to fit within an aneurysm.

79. The vaso-occlusive device of claim 46, wherein a portion of the vaso-occlusive member is made of a relatively weaker material for forming the fold line.