Foam matrix embolization device
First Claim
1. A vascular embolization device adapted for delivery to a position within a patient'"'"'s blood vessel comprising an elongated coil having a lumen, said coil and lumen prior to said delivery being at least partially embedded in an elongated foam member comprising a flexible, biodegradable, open and interconnecting cell foam material having embolic characteristics, and capable of allowing cell proliferation into the open cell foam interior, the foam member having an average pore size of 5-100 microns, said elongated foam member having an outer diameter which, in uncompressed condition, is no more than 0.006 inch greater than the outer diameter of the elongated coil.
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Abstract
The present invention relates to a medical device for placement at a predetermined location within a passageway of the human body, and more particularly, relates to a flexible embolization device which may be delivered by a catheter to a pre-selected position within a blood vessel to thereby embolize a blood vessel or a blood vessel defect, such as an aneurysm or fistula. Specifically, the embolization device comprises an elongated coil having a lumen, the coil and lumen being at least partially embedded in an elongated foam member comprising, in some embodiments, a flexible, biodegradable, water insoluble, open, interconnecting-cell foam material having embolic characteristics, and capable of allowing cell proliferation into the open cell foam interior.
51 Citations
9 Claims
- 1. A vascular embolization device adapted for delivery to a position within a patient'"'"'s blood vessel comprising an elongated coil having a lumen, said coil and lumen prior to said delivery being at least partially embedded in an elongated foam member comprising a flexible, biodegradable, open and interconnecting cell foam material having embolic characteristics, and capable of allowing cell proliferation into the open cell foam interior, the foam member having an average pore size of 5-100 microns, said elongated foam member having an outer diameter which, in uncompressed condition, is no more than 0.006 inch greater than the outer diameter of the elongated coil.
Specification