Photochrome- or near IR dye-coupled polymeric matrices for medical articles
View Patent ↗The invention provides polymers comprising pendent photochrome or near IR dye groups, as well as polymeric matrices made from these polymers, which can be used as or in association with a medical article. The polymers can be synthesized using methods that facilitate the preparation of medical articles having good biocompatibility. Exemplary polymeric matrices are in the form of lubricious coatings on medical devices, such as catheters. Visualization by irradiation of the photochrome or near IR dye can improve detection of the polymeric matrix on a device or in the body. This, in turn can improve aspects of a medical procedure, such as device insertion or matrix formation, as well as being useful for assessing the quality of the matrix.
1. A medical article having a lubricious coating, the coating comprising a biocompatible hydrophilic copolymer having a polymeric backbone, the copolymer comprising
a hydrophilic monomer, and
a monomer comprising a detectable moiety according to the following formula:
wherein R 9 and R 10 are independently selected from —H and —CH 3 , X 3 is N or C, and R 2 and/or R 3 are independently selected from electron withdrawing groups selected from the group consisting of nitro (—NO 2 ), quaternary amine, trihalide, cyano, sulfonate, carboxylic acid, and ester, wherein if R 2 or R 3 is not an electron withdrawing group, then it is H.
2. The medical article of claim 1 wherein X 3 is C; or R 2 is nitro (—NO 2 ) and R 3 is H; or X 3 is C, R 2 is nitro (—NO 2 ) and R 3 is H.
3. The medical article of claim 2 , wherein the monomer comprising a detectable moiety pendent according to the following formula:
4. The medical article of claim 1 , wherein the copolymer further comprises a monomer comprising a pendant reactive group that allows for polymer crosslinking or bonding of the polymer to a target upon activation of the reactive group.
5. The medical article of claim l, wherein the monomer comprising the detectable moiety is present in the polymer in an amount in the range of 0.1% mol to 25% mol ( monomer/polymer).
6. The medical article of claim 4 wherein the pendent reactive group comprises an aryl ketone photoreactive group.
7. The medical article of claim 1 comprising a catheter, wherein the lubricious coating is formed on a surface of the catheter.
8. The medical article of claim 1 wherein the medical article comprises a bioactive agent.
9. The medical article of claim 1 wherein the hydrophilic monomer is selected from the group consisting of methacrylate, methyl methacrylate, hydroxyethyl methacrylate, hydroxyethyl acrylate, glycerol acrylate, glycerol methacrylate, acrylamide, methacrylamide, aminopropylmethacrylamide, methyl vinyl ether, vinyl pyrrolidone, and mixtures thereof.