Phase-separated block copolymer coatings for implantable medical devices
First Claim
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1. A medical device comprising a phase-separated block copolymer of two or more polymer blocks and the medical device comprising two or more active agents;
- wherein the phase-separated block copolymer comprises two or more phase domains;
wherein a first active agent is preferentially incorporated in a first phase domain and a second active agent is preferentially incorporated in a second phase domain, and wherein the first and the second active agents have different release-rate profiles from the two or more phase domains in the phase-separated block copolymer;
wherein the two or more phase domains of the phase-separated block copolymer comprise a hydrophobic phase domain which comprises a hydrophobic block and a hydrophilic phase domain which comprises a hydrophilic block;
whereinthe first phase domain comprises the hydrophobic phase domain and the second phase domain comprises the hydrophilic phase domain;
orthe first phase domain comprises the hydrophilic phase domain and the second phase domain comprises the hydrophobic phase domain;
wherein the hydrophilic block of the block copolymer comprises a hydrophilic constituent monomer selected from the group consisting of PEG acrylate (PEGA), PEG methacrylate, 2-methacryloyloxyethyl-phosphorylcholine (MPC), n-vinyl pyrrolidone (VP), alkoxymethacrylates, alkoxyacrylates, 2-methacryloylethyl phosphoryl choline, phosphoryl choline methacrylate, 2-acrylamido-2-methyl-1-propanesulfonic acid, 3-sulfopropyl acrylate, 3-sulfopropyl methacrylate (SPMA), vinylsulfonic acid, 4-styrenesulfonic acid, 2-allyoxy-2-hydroxypropanesulfonic acid, and combinations thereof;
andwherein the hydrophobic block of the block copolymer comprises a hydrophobic constituent monomer selected from the group consisting of 3-hydroxyhexanoate, 4-hydroxyhexanoate, and combinations thereof.
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Abstract
Medical devices and coatings for medical devices are disclosed, including methods for forming the devices and coatings. The devices and coatings comprise a phase-separated block copolymer matrix and one or more active agents. The phase-separated block copolymer matrix can be used to modulate the release-rate of one or more active agents from the medical device.
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21 Claims
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1. A medical device comprising a phase-separated block copolymer of two or more polymer blocks and the medical device comprising two or more active agents;
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wherein the phase-separated block copolymer comprises two or more phase domains; wherein a first active agent is preferentially incorporated in a first phase domain and a second active agent is preferentially incorporated in a second phase domain, and wherein the first and the second active agents have different release-rate profiles from the two or more phase domains in the phase-separated block copolymer; wherein the two or more phase domains of the phase-separated block copolymer comprise a hydrophobic phase domain which comprises a hydrophobic block and a hydrophilic phase domain which comprises a hydrophilic block; wherein the first phase domain comprises the hydrophobic phase domain and the second phase domain comprises the hydrophilic phase domain; or the first phase domain comprises the hydrophilic phase domain and the second phase domain comprises the hydrophobic phase domain; wherein the hydrophilic block of the block copolymer comprises a hydrophilic constituent monomer selected from the group consisting of PEG acrylate (PEGA), PEG methacrylate, 2-methacryloyloxyethyl-phosphorylcholine (MPC), n-vinyl pyrrolidone (VP), alkoxymethacrylates, alkoxyacrylates, 2-methacryloylethyl phosphoryl choline, phosphoryl choline methacrylate, 2-acrylamido-2-methyl-1-propanesulfonic acid, 3-sulfopropyl acrylate, 3-sulfopropyl methacrylate (SPMA), vinylsulfonic acid, 4-styrenesulfonic acid, 2-allyoxy-2-hydroxypropanesulfonic acid, and combinations thereof; and wherein the hydrophobic block of the block copolymer comprises a hydrophobic constituent monomer selected from the group consisting of 3-hydroxyhexanoate, 4-hydroxyhexanoate, and combinations thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification