HYDROGEL FILAMENTS FOR BIOMEDICAL USES
First Claim
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1. A device for implantation comprising:
- a difunctional, low molecular weight ethylenically unsaturated shapeable macromer;
an ethylenically unsaturated monomer; and
a visualization agent,wherein said device contains no support members.
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Abstract
Described herein are apparatus, compositions, systems and associated methods to occlude structures and malformations with radiopaque hydrogel filaments with delayed controlled rates of expansion permitting the repositioning of the device once inside the structure or malformation. Further described is a device for implantation in an animal comprising a difunctional, low molecular weight ethylenically unsaturated shapeable macromer; an ethylenically unsaturated monomer; and a radiopaque element, wherein said device contains no support members. Methods of forming such devices are also disclosed.
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Citations
26 Claims
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1. A device for implantation comprising:
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a difunctional, low molecular weight ethylenically unsaturated shapeable macromer; an ethylenically unsaturated monomer; and a visualization agent, wherein said device contains no support members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for preparing device for implantation in an animal comprising:
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a) combining a difunctional, low molecular weight ethylenically unsaturated shapeable macromer, an ethylenically unsaturated monomer, a visualization agent, and a solvent to prepare a prepolymer solution; and b) treating said prepolymer solution to prepare hydrogel that is expansible at physiological conditions. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A device for implantation in an animal comprising:
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a difunctional, low molecular weight ethylenically unsaturated shapeable macromer with a molecular weight of about 100 grams/mole to about 5000 grams/mole; an ethylenically unsaturated monomer; and a visualization agent, wherein said device contains no metallic support members.
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Specification