Lubricious, drug-accommodating coating
First Claim
Patent Images
1. A drug-releasing coating, comprising:
- at least one drug associated with and releasable from a polyurea network formed from the reaction on a substrate to be coated of a mixture comprising;
(a) a polyisocyanate;
(b) an amine;
(c) an isocyanatosilane adduct having at least one terminal isocyanate group and at least one hydrolyzable alkoxy group bonded to silicon; and
optionally (d) a polymer selected from the group consisting of polyethylene oxide, polyvinyl pyrrolidone, polyvinyl alcohol, polyethylene glycol, and polyacrylic acid.
1 Assignment
0 Petitions
Accused Products
Abstract
A coating is provided for a substrate comprising a polyisocyanate; an amine donor and/or hydroxyl donor; an isocyanatosilane adduct having terminal isocyanate groups and at least one hydrolyzable alkoxy group bonded to silicon; and optionally a polymer selected from the group consisting of polyethylene oxide, polyvinyl pyrrolidone, polyvinyl alcohol, polyethylene glycol, and polyacrylic acid. The coating can accommodate a drug so that when the coating is applied to a medical device, the medical device becomes drug-releasing when in contact with aqueous body fluid. A coated article as well as a method for preparing the coating is also provided.
-
Citations
38 Claims
-
1. A drug-releasing coating, comprising:
-
at least one drug associated with and releasable from a polyurea network formed from the reaction on a substrate to be coated of a mixture comprising;
(a) a polyisocyanate;
(b) an amine;
(c) an isocyanatosilane adduct having at least one terminal isocyanate group and at least one hydrolyzable alkoxy group bonded to silicon; and
optionally(d) a polymer selected from the group consisting of polyethylene oxide, polyvinyl pyrrolidone, polyvinyl alcohol, polyethylene glycol, and polyacrylic acid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 37)
(a) from about 0.2 to about 10 percent by weight poIyisocyanate;
(b) from about 0.2 to about 10 percent by weight amine donor;
(c) from about 0.2 to about 20 percent by weight of said polymer; and
(d) from about 0.1 to about 10 percent by weight isocyanatosilane adduct having at least one terminal isocyanate group and at least one hydrolyzable alkoxy group bonded to silicon.
-
-
10. The drug-releasing coating according to claim 1, wherein said amine donor is a polyetherdiamine, a polyethertriamine, a urethane modified melamine polyol or an amine terminated polypropyleneglycol.
-
11. The drug-releasing coating of claim 1, wherein said drug is associated with said polyurea network by ionic interactions, hydrogen bonding, covalent bonding, metal ion-ligand interactions, hydrophilic interactions, hydrophobic interactions, or any combination thereof.
-
12. The drug releasing coating of claim 1, wherein said drug is a polypeptide.
-
13. The drug releasing coating of claim 1, wherein said drug is nitric oxide.
-
14. The drug-releasing coating according to claim 13, wherein said nitric oxide is associated with said polyurea network as a functional group selected from N2O2 or N2O2−
- .
-
15. The drug-releasing coating according to claim 14, wherein said nitric oxide-releasing functional group is covalently attached to said polyurea network.
-
16. The drug-releasing coating according to claim 15, wherein said nitric oxide-releasing functional group is covalently attached to a nitrogen atom.
-
17. The drug-releasing coating according to claim 16, wherein said covalent bond comprises X—
- N2O2 or X—
N2O2−
, wherein X is a primary amine, a secondary amine, a polyamine or a derivative thereof.
- N2O2 or X—
-
37. The drug releasing coating of claim 1, wherein said polypeptide is derived from a complex selected from the group consisting of heparin-tridodecylmethylammonium chloride, heparin-benzalkonium chloride, heparin-steralkonium chloride, heparin-poly-N-vinyl-pyrrolidone, heparin-lecithin, heparin-didodecyldimethylammonium bromide, heparin-pyridinium chloride, and heparin-synthetic glycolipid complex.
-
18. An article, comprising (1) a substrate on which is coated (2) a drug-releasing coating, comprising:
-
at least one drug associated with and releasable from a polyurea network formed from reaction on a substrate to be coated of a mixture comprising;
(a) a polyisocyanate;
(b) an amine donor;
(c) an isocyanatosilane adduct having at least one terminal isocyanate group and at least one hydrolyzable alkoxy group bonded to silicon; and
optionally(b) a polymer selected from the group consisting of a polyethylene oxide, polyvinyl pyrrolidone, polyvinyl alcohol, polyethylene glycol, and polyacrylic acid. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A method of preparing a drug-releasing coating on a substrate to be coated comprising:
-
(a) forming a mixture of a polyisocyanate;
an amine;
an isocyanatosilane adduct having at least one terminal isocyanate group and at least one hydrolyzable alkoxy group bonded to silicon; and
optionally a polymer selected from the group consisting of polyethylene oxide, polyvinyl pyrrolidone, polyvinyl alcohol, polyethylene glycol, and polyacrylic acid, in a solvent;
(b) applying said mixture to said substrate;
(c) associating a drug with said mixture-applied substrate by contacting said mixture-applied substrate with a drug; and
(d) curing said mixture on said substrate to form said coating. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36)
at least one drug associated with and releasable from a polyurea network formed from the reaction on a substrate to be coated of a mixture comprising;
(a) a polyisocyanate;
(b) an amine donor;
(c) an isocyanatosilane adduct having terminal isocyanate groups and at least one hydrolyzable alkoxy group bonded to silicon; and
optionally; and
(d) a polymer selected from the group consisting of polyethylene oxide, polyvinyl pyrrolidone, polyvinyl alcohol, polyethylene glycol, and polyacrylic acid;
produceable by the method of claim 27.
-
-
36. The drug releasing coating of claim 27, wherein said polypeptide is derived from heparin.
-
38. In a medical device having a drug-releasing coating, the improvement comprising:
- a drug-releasing functional group associated with and releaseable from a polyurea network formed by the reaction of a mixture comprising;
(a) a polyisocyanate;
(b) an amine; and
(c) an isocyanatosilane adduct having terminal isocyanate groups and at least one hydrolyzable alkoxy group bonded to silicon; and
optionally(d) a polymer selected from the group consisting of polyethylene oxide, polyvinyl pyrrolidone, polyvinyl alcohol, polyethylene glycol, and polyacrylic acid.
- a drug-releasing functional group associated with and releaseable from a polyurea network formed by the reaction of a mixture comprising;
Specification