Metallic coils enlaced with fibers for embolization of a body cavity
A vaso-occlusive device is provided for reducing blood flow in a patient. The device can include a coil, a stretch resistant member, and a plurality of fibers. The coil can define a lumen and be sized for insertion to a point of use in a vascular network of the patient. The stretch resistant member can have a first end fixedly attached to the first end of the coil. Further, the plurality of fibers can be configured with each of the fibers in direct contact with the stretch resistant member.
1. A vaso-occlusive device for occluding blood flow in a patient, the device comprising:
a coil, comprising a lumen and a first and a second end, and sized for insertion to a point of use in a vascular network of the patient;
a stretch resistant member having a first end fixedly attached to the first end of the coil; and
a plurality of fibers where each of the fibers is in direct contact with the stretch resistant member, wherein each of the fibers is wrapped around the stretch resistant member at least two times, wherein each of the fibers comprises a first fiber end and a second fiber end, the first fiber end moving independently and extending freely of the coil, the second fiber end moving independently and extending freely of the coil.
2. The device of claim 1 , wherein the stretch resistant member axially traverses the lumen of the coil.
3. The device of claim 1 , wherein the stretch resistant member comprises a metal chosen from the group consisting of platinum, palladium, rhodium, rhenium, iridium, gold, silver, tungsten and tantalum, an alloy of two or more of these metals and a superelastic metal.
4. The device of claim 1 , wherein the stretch resistant member comprises a polymer.
5. The device of claim 1 , wherein the coil comprises a primary helix which is itself wound into a secondary shape.
6. The device of claim 1 , wherein the fibers comprise one of a bioactive and a non-bioactive material.
7. The device of claim 1 , wherein the fibers comprise a copolymer of glycolic acid and lactic acid.
8. The device of claim 7 , wherein a ratio of glycolic acid to lactic acid is one of the group consisting of 99:1, 1:99, 95:5, 5:95, 50:50, 90:10, and 10:90.
9. The device of claim 1 , wherein the fibers further comprise a bioactive coating.
10. The device of claim 1 , wherein the fibers comprise a non-biodegradable polymer chosen from the group consisting of a polyethylene, a polyacrylic, a polypropylene, apolyvinylchloride, a polyamide, a polyurethane, a polyvinylpyrrolidone, a polyvinyl alcohol, a polyvinylacetate, a cellulose acetate, a polystyrene, a polytetrafluoroethylene, a polyester, silk, nylon, polyethylene terephthalate, and cotton.
11. The device of claim 1 , wherein the fibers comprise a biodegradable polymer chosen from the group consisting of polyglycolic acid, polycaprolactone, polyhydroxybutyrate valerate, polyorthoester, polylactic acid, poly (p-dioxanone), poly (valetolactone), poly (tartronic acid), poly (β-malonic acid), poly (propylene fumarate), a tyrosine based polycarbonate, and a copolymer of polyethylene oxide and polybutylene terephthalate.
12. The device of claim 1 , wherein each of the first and second fiber ends extend radially outward from the coil.
13. The device of claim 1 , wherein each of the fibers is wrapped around the stretch resistant member at least two times for securing the fibers to the device.
14. The device of claim 1 , wherein each of the fibers is wrapped around the stretch resistant member at least two times for avoiding potentially obstructive bundles which might hinder deployment of the device or might mechanically damage the device.
15. A vaso-occlusive device for occluding blood flow in a patient, the device comprising:
a coil, comprising a plurality of coil windings, a lumen and a first and a second end, and sized for insertion to a point of use in a vascular network of the patient;
a stretch resistant member having a first end fixedly attached to the first end of the coil; and
a plurality of fibers where each of the fibers is wrapped in direct contact around the stretch resistant member at least two times, the plurality of fibers being provided at discrete, spaced-apart intervals in between the coil windings along a length of the stretch resistant member.
16. The device of claim 15 , wherein the stretch resistant member comprises polypropylene.
17. The device of claim 15 , wherein the coil comprises a primary helix which is wound into a secondary shape.
18. The device of claim 15 , wherein each of the fibers comprises first and second ends and each of the first and second fiber ends extends freely from the coil.
19. The device of claim 15 , wherein each of the fibers is wrapped in direct contact around the stretch resistant member at least two times for securing the fibers to the device.
20. The device of claim 15 , wherein each of the fibers is wrapped in direct contact around the stretch resistant member at least two times for avoiding potentially obstructive bundles which might hinder deployment of the device or might mechanically damage the device.