Occlusive Embolic Coil
First Claim
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1. An embolic device comprising:
- a tantalum coil with a primary shape and a secondary shape;
the tantalum coil fitted with an inner shape-memory material to assist in forming the secondary shape;
the inner-shape memory material separately adopting a delivery shape when constrained within a catheter and a deployed shape when freed from the catheter;
wherein the tantalum coil adopts the shape of the inner shape-memory material, such that the tantalum coil adopts the delivery shape when constrained within the catheter as the primary shape and the deployed shape when freed from the catheter as the secondary shape.
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Abstract
An embolic coil is described used for occlusive purposes in the vasculature is described. The embolic or occlusive coil utilizes different techniques to both enhance the occlusive effect of the coil within the vasculature and to help guide the embolic coil into its deployed shape in the vasculature.
194 Citations
15 Claims
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1. An embolic device comprising:
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a tantalum coil with a primary shape and a secondary shape; the tantalum coil fitted with an inner shape-memory material to assist in forming the secondary shape; the inner-shape memory material separately adopting a delivery shape when constrained within a catheter and a deployed shape when freed from the catheter; wherein the tantalum coil adopts the shape of the inner shape-memory material, such that the tantalum coil adopts the delivery shape when constrained within the catheter as the primary shape and the deployed shape when freed from the catheter as the secondary shape. - View Dependent Claims (2, 3, 4, 5)
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6. An injectable embolic device comprising:
a plurality of radially enlarged elements and a plurality of radially reduced elements arranged in an alternating manner, wherein the enlarged elements are comprised of tantalum. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. An embolic device comprising:
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a tantalum coil; an inner element within the tantalum coil, the inner element having proximal and distal looped ends; where the proximal and distal looped ends of the inner element sit respectively past the proximal and distal ends of said tantalum coil. - View Dependent Claims (14, 15)
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Specification