Three-dimensional coils for treatment of vascular aneurysms
First Claim
1. A coil for treatment of vascular aneurysms, said coil being deliverable into an aneurysm of a vascular vessel through a catheter, said coil comprising a plurality of flexible, resilient filamentary members interlaced with one another to form an elongated substrate, said filamentary members biasing said substrate into a three-dimensional expanded state, said interlaced filamentary members defining a plurality of interstices dispersed on said substrate providing sites for coagulation of blood thereon when said substrate is in the expanded state, said substrate being expandable from a collapsed state wherein said substrate fits within the catheter, to said expanded state wherein said substrate expands to substantially fill the aneurysm, said substrate assuming said expanded state upon release from said catheter into said aneurysm.
2 Assignments
0 Petitions
Accused Products
Abstract
A coil for the treatment of vascular aneurysms is disclosed. The coil is formed from filamentary members interlaced to form a three-dimensional substrate. The substrate is deformable between a collapsed state wherein it fits within a catheter, and an expanded state, which it assumes once deployed from the catheter into the vascular aneurysm. The three-dimensional shapes of the substrate include flat sheets biased into a helix or a tubular forms biased into figure eight loops, helical loops or a sinusoid. Bioactive characteristics may be imparted to the coil through the use of coatings or materials that provoke a healing response in living tissue.
210 Citations
23 Claims
- 1. A coil for treatment of vascular aneurysms, said coil being deliverable into an aneurysm of a vascular vessel through a catheter, said coil comprising a plurality of flexible, resilient filamentary members interlaced with one another to form an elongated substrate, said filamentary members biasing said substrate into a three-dimensional expanded state, said interlaced filamentary members defining a plurality of interstices dispersed on said substrate providing sites for coagulation of blood thereon when said substrate is in the expanded state, said substrate being expandable from a collapsed state wherein said substrate fits within the catheter, to said expanded state wherein said substrate expands to substantially fill the aneurysm, said substrate assuming said expanded state upon release from said catheter into said aneurysm.
- 19. A coil for treatment of vascular aneurysms, said coil being deliverable into an aneurysm of a vascular vessel through a catheter, said coil comprising a plurality of flexible, resilient filamentary members interwoven with one another to form an elongated, substantially flat substrate, said substrate being biased into a three-dimensional helical shape, said interwoven filamentary members defining a plurality of interstices on said substrate providing sites for coagulation of blood, said substrate being expandable from a collapsed state wherein said substrate interfits within said catheter, to an expanded state wherein said substrate expands to substantially fill said aneurysm, said substrate expanding upon release from said catheter into said aneurysm, an anchor being attached to said substrate, said anchor being formed of a material that provokes a healing response in living tissue, said anchor being attachable to said vascular vessel within said aneurysm.
- 21. A coil for treatment of vascular aneurysms, said coil being deliverable into an aneurysm of a vascular vessel through a catheter, said coil comprising a plurality of flexible, resilient filamentary members interbraided with one another to form an elongated, tubular substrate, said substrate being biased into a three-dimensional shape, said interbraided filamentary members defining a plurality of interstices on said substrate providing sites for coagulation of blood thereon, said substrate being expandable from a collapsed state wherein said substrate interfits within said catheter, to an expanded state wherein said substrate expands to substantially fill said aneurysm, said substrate expanding upon release from said catheter into said aneurysm, an anchor being attached to an end of said substrate, said anchor being formed of a material that provokes a healing response in living tissue, said anchor serving to attach said end of said substrate to said vascular vessel within said aneurysm.
Specification