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 vaso-occlusive assembly, comprising:
an elongated member slidably disposed within a delivery catheter;
an implantable vaso-occlusive device mounted on a distal end of the elongated member, the device configured for implantation in an aneurysm sac and having a delivery configuration when restrained within the delivery catheter, and a deployed configuration when released from the delivery catheter into an aneurysm sac, the vaso-occlusive device comprising
a detachment junction detachably coupled to the elongated member;
an inner member having an axial length coupled to the detachment junction;
a 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; and
a stop element attached to the inner member.
2. The assembly of claim 1 , wherein the stop element comprises polymer.
3. The assembly of claim 1 , wherein the expandable member has a braid configuration.
4. The assembly of claim 1 , wherein the inner member comprises a coil.
5. The assembly of claim 1 , wherein the expandable member comprises a metal or metal alloy selected from the group consisting of nitinol, nickel, titanium, platinum, gold, tungsten, iridium and alloys or combinations thereof.
6. The assembly of claim 1 , wherein the inner member comprises a coil made of a metal selected from the group consisting of platinum, palladium, rhodium, gold, tungsten and alloys thereof.
7. The assembly of claim 1 , wherein the inner member comprises a coil made of stainless steel or super-elastic metal alloy.
8. The assembly of claim 1 , wherein the detachment junction is attached to the inner member.
9. The assembly of claim 1 , wherein the detachment junction is attached to the stop element.
10. The assembly of claim 1 , further comprising a sliding element disposed around the inner member, wherein the expandable member is attached to the sliding element.
11. The assembly of claim 10 , wherein the sliding element comprises a polymer.
12. The assembly of claim 1 , wherein the expandable member is attached to the inner member.
13. A vaso-occlusive assembly, comprising:
a delivery catheter defining a lumen, the delivery catheter having an open distal end in communication with the lumen;
an elongated member slidably disposed within the lumen of the delivery catheter;
an implantable vaso-occlusive device mounted on a distal end of the elongated member, the device configured for implantation in an aneurysm sac and having a delivery linear configuration when restrained within the delivery catheter, and a deployed relaxed configuration when released from the delivery catheter into an aneurysm sac, the vaso-occlusive device comprising
a detachment junction detachably coupled to the elongated member;
an inner coil member having an axial length coupled to the detachment junction;
a tubular expandable member disposed around the inner member, wherein the expandable member has a braid configuration and slides along at least a portion of the axial length of the inner member; and
a polymer stop element attached to the inner member.
14. The assembly of claim 13 , wherein the expandable member is made of a metal selected from the group consisting of nitinol, nickel, titanium, platinum, gold, tungsten, iridium and alloys or combinations thereof.
15. The assembly of claim 13 , wherein the inner coil member comprises a coil made of a super-elastic metal alloy.
16. The assembly of claim 13 , wherein the detachment junction is attached to the inner member.
17. The assembly of claim 13 , wherein the detachment junction is attached to the stop element.
18. The assembly of claim 13 , further comprising a polymer sliding element disposed around the inner member, wherein the expandable member is attached to the sliding element.
19. A vaso-occlusive assembly, comprising:
a delivery catheter defining a lumen, the delivery catheter having an open distal end in communication with the lumen;
an elongated member slidably disposed within the lumen of the delivery catheter;
an implantable vaso-occlusive device mounted on a distal end of the elongated member, the device configured for implantation in an aneurysm sac and having a delivery linear configuration when restrained within the delivery catheter, and a deployed relaxed three-dimensional configuration when released from the delivery catheter into an aneurysm sac, the vaso-occlusive device comprising
a detachment junction detachably coupled to the elongated member, and attached to an inner coil member or an stop element;
an inner coil member having an axial length;
a tubular expandable member disposed around the inner coil 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 coil member;
and
a sliding element disposed around the inner coil member, wherein the expandable member is attached to the sliding element.