OCCLUSION DEVICE HAVING SPHERICAL SECONDARY SHAPE AND MANDREL FOR FORMING SAME
First Claim
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1. An occlusion device having a memorized spherical shape and comprising a wire having a memorized shape in which the wire comprises a spherical outer wire layer and a spherical inner wire layer disposed within the spherical outer wire layer.
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Abstract
Some aspects of the present disclosure pertain to spherical devices that comprise a wire having a memorized shape comprising a spherical outer wire layer and a spherical inner wire layer disposed within the spherical outer wire layer. Other aspects of the disclosure pertain to methods of forming such devices, mandrels for forming such devices, and methods of using such devices.
18 Citations
20 Claims
- 1. An occlusion device having a memorized spherical shape and comprising a wire having a memorized shape in which the wire comprises a spherical outer wire layer and a spherical inner wire layer disposed within the spherical outer wire layer.
- 8. A spherical mandrel for producing an occlusion device having a memorized spherical shape and comprising a first groove encircling the mandrel for multiple turns and a second groove encircling the mandrel for multiple turns, wherein the first and second grooves intersect and wherein the second groove is shallower than the first groove.
- 16. A method of forming an occlusion comprising (a) advancing a catheter to an entrance of an aneurysm, (b) delivering an occlusion device comprising a wire through the catheter into the aneurysm, wherein the wire is constrained to a substantially linear shape when in the catheter and wherein, upon relaxation after delivery, the wire relaxes to a memorized spherical shape that comprises an outer wire layer and an inner wire layer disposed within the outer wire layer.
Specification