Detachable aneurysm neck bridge
View Patent ↗In one embodiment, a neck bridge for bridging the neck of an aneurysm includes a junction region, a number of radially extending array elements attached to the junction region, and a cover attached to one or both of the junction region and an array element. The array elements are configured to be positioned within the aneurysm after the neck bridge is deployed from a delivery device. In a second embodiment, the neck bridge includes a junction region and a braided or mesh-like structure secured to the junction region. The braided or mesh-like structure is made from an elastic material.
1. A device for bridging a neck of an aneurysm, comprising:
a delivery catheter defining a lumen, the delivery catheter having an open distal end in communication with the lumen;
an elongated tubular member slidably disposed within the lumen of the delivery catheter, the elongated tubular member defining a lumen;
a neck bridge detachably mounted on a distal end of the elongated tubular member, the neck bridge configured for placement within or across the neck of the aneurysm, and comprising
a junction region detachably coupled to the elongated tubular member,
a plurality of radially extending array elements secured to the junction region, each array element having an unfolded shape and a delivery shape, and
a cover attached to the junction region, wherein the cover extends over the delivery shape of the array elements; and
a vaso-occlusive element detachably coupled to a core wire slidably disposed within the lumen of the elongated tubular member, wherein the vaso-occlusive element may be extended through the respective distal end openings of the elongated tubular member and delivery catheter for placement in the aneurysm.
2. The device of claim 1 , further comprising a tip, wherein each of the array elements comprises a wire having a first end attached to the tip and a second end attached to the junction region.
3. The device of claim 2 , the tip having an opening through which the vaso-occlusive element or an occlusion fluid may be delivered.
4. The device of claim 1 , wherein the cover comprises a plurality of loops.
5. The device of claim 4 , wherein each loop comprising a fiber having first and second ends attached to the junction region.
6. The device of claim 1 , wherein the cover has a top side and a bottom side, and wherein the array elements are positioned between the top side and the bottom side of the cover, the cover further comprising a disk positioned between the top side and the bottom side of the cover.
7. The device of claim 1 , wherein each of the plurality of radially extending array elements comprises a wire having a curvilinear configuration.
8. The device of claim 1 , wherein each of the plurality of radially extending array elements comprises a resilient, substantially elastic material.
9. The device of claim 1 , wherein the plurality of radially extending array elements are constructed of a material selected from the group consisting of stainless steel and super-elastic alloys.
10. The device of claim 1 , wherein the plurality of radially extending array elements comprise a radio-opaque material.
11. The device of claim 1 , wherein the cover is constructed of a material selected from the group consisting of polyethylene, polypropylene, polytetraflouroethylene; polyesters, polyethyleneterephthalate (PET), dacron; polyamides including nylons; polyolefins, polyethylene, polypropylene, polybuylene, mixtures, alloys, block and random copolymers; polyglycolic acid; polylactic acid; fluoropolymers (polytetrafluoro-ethylene), polyluorocarbons, wool, cotton, silk, collagen; and combinations thereof.
12. The device of claim 1 , wherein the neck bridge is detachably mounted on a distal end of the elongated tubular member via an electrolytically severable joint.
13. The device of claim 1 , wherein the cover is attached to the plurality of radially extending array elements.
14. The device of claim 1 , wherein the plurality of radially extending array elements are constructed of material selected from the group consisting of polyethylene, polypropylene, polytetraflouroethylene; polyesters, polyethyleneterephthalate (PET), dacron; polyamides including nylons; polyolefins, polyethylene, polypropylene, polybuylene, mixtures, alloys, block and random copolymers; polyglycolic acid; polylactic acid; fluoropolymers (polytetrafluoro-ethylene), silk, and collagen.