Foldable vaso-occlusive member
View Patent ↗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.
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.