Expanding vaso-occlusive device
View Patent ↗This is a device for occluding a space within the body. In particular, the device comprises an expandable member, an inner member and one or more stop elements. The devices may be placed in a desired site within a mammal to facilitate the formation of an occlusion.
1. A method of occluding an aneurysm comprising introducing a vaso-occlusive device into the aneurysm such that the vaso-occlusive device assumes its relaxed, three-dimensional configuration within the aneurysm, thereby occluding the aneurysm, the vaso-occlusive device comprising:
an implantable vaso-occlusive device having a linear configuration within a restraining member and a relaxed, three-dimensional configuration upon release from the restraining member, the linear configuration of the device comprising
an inner member having an axial length:
a substantially tubular expandable member disposed around the inner member, wherein the expandable member slides along at least a portion of the axial length of the inner member;
a stop element attached to the inner member; and
a detachment junction;
and wherein the relaxed, three-dimensional configuration of the implanted vaso-occlusive device is adapted to be placed within an aneurysm such that the device occludes the aneurysm.
2. The method of claim 1 , wherein the stop element comprises a polymer.
3. The method of claim 1 , wherein the expandable member comprises a braid configuration.
4. The method of claim 1 , wherein the inner member comprises a coil.
5. The method of claim 1 , wherein the expandable member comprises a metal.
6. The method of claim 5 , wherein the metal is selected from the group consisting of nickel, titanium, platinum, gold, tungsten, iridium and alloys or combinations thereof.
7. The method of claim 6 , wherein the metal is nitinol or platinum.
8. The method of claim 1 , wherein the inner member comprises a coil comprising a metal selected from the group consisting of platinum, palladium, rhodium, gold, tungsten and alloys thereof.
9. The method of claim 1 , wherein the inner member comprises a coil comprising a stainless steel or super-elastic metal alloy.
10. The method of claim 4 , wherein the coil member comprises nitinol.
11. The method of claim 1 , wherein the detachment junction comprises an electrolytically detachable end adapted to detach from a pusher by imposition of a current on the pusher.
12. The method of claim 1 , wherein the detachment junction is attached to the inner member.
13. The method of claim 1 , wherein the detachment junction is attached to the stop element.
14. The method according to claim 1 , further comprising
a sliding element disposed around the inner member, wherein the expandable member is attached to the sliding element.
15. The method of claim 14 , wherein the sliding element comprises a polymer.
16. The method of claim 1 , wherein the expandable member is attached to the inner member in at least one location.
17. The method of claim 1 , further comprising an additional component.
18. The method of claim 17 , wherein the additional component is bioactive.