Polymeric treatment compositions
First Claim
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1. A method of delivering a composition comprising:
- injecting through a delivery device into a location with physiological pH environment a liquid embolic composition comprising a biocompatible polymer, an aqueous solution with a non-physiological pH, and a visualization agent, wherein the visualization agent is an iodinated compound, barium sulfate tantalum, superparamagnetic iron oxide, gadolinium molecules, or a combination thereof,wherein the biocompatible polymer is soluble in the aqueous solution and precipitates when it reaches the physiological pH and wherein the biocompatible polymer comprises;
a first monomer selected from a group consisting of aminopropyl methacrylamide, aminoethyl methacrylamide, N-(3-methylphridine)acrylamide, N-(2-(4-aminophenyl)ethylacrylamide, N-(4-aminobenzyl)acrylamide, N-(2-4-imidazolyl)ethyl)acrylamide, and combinations thereof; and
a second monomer selected from a group consisting of t-butyl acrylate, t-butyl acrylamide, n-octyl methacrylate, methyl methacrylate, hydroxyethyl methacrylate, hydroxyethyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate, derivatives thereof, or combinations thereof.
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Abstract
Compositions are described comprising a polymer; a non-physiological pH solution; and a visualization agent; wherein the polymer is soluble in the non-physiological pH solution and insoluble at a physiological pH. Methods of forming the solutions and polymers are disclosed as well as methods of therapeutic use.
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Citations
16 Claims
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1. A method of delivering a composition comprising:
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injecting through a delivery device into a location with physiological pH environment a liquid embolic composition comprising a biocompatible polymer, an aqueous solution with a non-physiological pH, and a visualization agent, wherein the visualization agent is an iodinated compound, barium sulfate tantalum, superparamagnetic iron oxide, gadolinium molecules, or a combination thereof, wherein the biocompatible polymer is soluble in the aqueous solution and precipitates when it reaches the physiological pH and wherein the biocompatible polymer comprises; a first monomer selected from a group consisting of aminopropyl methacrylamide, aminoethyl methacrylamide, N-(3-methylphridine)acrylamide, N-(2-(4-aminophenyl)ethylacrylamide, N-(4-aminobenzyl)acrylamide, N-(2-4-imidazolyl)ethyl)acrylamide, and combinations thereof; and a second monomer selected from a group consisting of t-butyl acrylate, t-butyl acrylamide, n-octyl methacrylate, methyl methacrylate, hydroxyethyl methacrylate, hydroxyethyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate, derivatives thereof, or combinations thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of treating a vascular disorder comprising
providing a liquid embolic composition comprising a biocompatible polymer, an aqueous solution with a non-physiological pH, and a visualization agent, wherein the visualization agent is an iodinated compound, barium sulfate tantalum, superparamagnetic iron oxide, gadolinium molecules, or a combination thereof and the biocompatible polymer is soluble in the aqueous solution and insoluble in a physiological pH and comprises: -
a first monomer selected from a group consisting of aminopropyl methacrylamide, aminoethyl methacrylamide, N-(3-methylphridine)acrylamide, N-(2-(4-aminophenyl)ethylacrylamide, N-(4-aminobenzyl)acrylamide, N-(2-4-imidazolyl)ethyl)acrylamide, and combinations thereof; and a second monomer selected from a group consisting of t-butyl acrylate, t-butyl acrylamide, n-octyl methacrylate, methyl methacrylate, hydroxyethyl methacrylate, hydroxyethyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate, derivatives thereof, or combinations thereof; inserting a delivery device into a vessel; guiding the delivery device to an area in need of treatment wherein the area has a physiological pH; injecting the liquid embolic polymer composition through the delivery device into the vessel at the area in need of treatment thereby immediately precipitating the biocompatible polymer and forming a solid polymeric mass; and treating the vascular condition. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification