Biocompatible materials
First Claim
1. A biocompatible material comprising a substrate and a phospholipid moiety covalently attached thereto in an amount and orientation effective to provide an improved nonthrombogenic surface relative to the substrate without the phospholipid moiety covalently attached thereto, wherein the biocompatible material has the following structure:
- ##STR8## wherein;
(a) R1 is a (C1 -C30)alkyl group;
(b) R2 is a (C1 -C30)alkylene group;
(c) m is 1-4;
(d) n is 1-4; and
(e) L is --C(O)--NH--(CH2)p -- wherein p is 0-20.
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Abstract
A biocompatible material comprising a substrate and a phospholipid moiety covalently attached thereto in an amount and orientation effective to provide an improved nonthrombogenic surface relative to the substrate without the phospholipid moiety covalently attached thereto is provided. In particularly preferred embodiments, the biocompatible material has the following structure: ##STR1## wherein: R1 is a (C1 -C30)alkyl group; R2 is a (C1 -C30)alkylene group; m is 1-4; n is 1-4; and L is a divalent linking group covalently bonded to the substrate and to the phospholipid moiety.
49 Citations
13 Claims
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1. A biocompatible material comprising a substrate and a phospholipid moiety covalently attached thereto in an amount and orientation effective to provide an improved nonthrombogenic surface relative to the substrate without the phospholipid moiety covalently attached thereto, wherein the biocompatible material has the following structure:
- ##STR8## wherein;
(a) R1 is a (C1 -C30)alkyl group;(b) R2 is a (C1 -C30)alkylene group; (c) m is 1-4; (d) n is 1-4; and (e) L is --C(O)--NH--(CH2)p -- wherein p is 0-20. - View Dependent Claims (2, 3, 4, 5, 6)
- ##STR8## wherein;
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7. A method for enhancing the biocompatibility of a substrate comprising:
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(a) covalently attaching a phospholipid compound to the substrate with a linker of the formula --C(O)--NH--(CH2)p --, wherein p is 0-20, in an amount and orientation effective to provide an improved nonthrombogenic surface relative to the substrate without the phospholipid moiety covalently attached thereto; and (b) contacting the substrate with blood;
wherein the phospholipid moiety has the following structure;
##STR9## wherein;
(a) R3 is a (C1 -C30)alkyl group having 0-4 double bonds;(b) R4 is a (C1 -C30)alkyl group having 0-4 double bonds; (c) m is 1-4; (d) n is 1-4; and (e) either R3 or R4 has at least one double bond. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A biocompatible material comprising a substrate and a phospholipid moiety covalently attached thereto in an amount and orientation effective to provide an improved nonthrombogenic surface relative to the substrate without the phospholipid moiety covalently attached thereto, having the following structure:
- ##STR10## wherein;
(a) R1 is a (C1 -C20) alkyl group;(b) R2 is a (C4 -C10) alkylene group; (c) m is 1; (d) n is 1; and (e) L is --C(O)--NH--(CH2)p -- wherein p is 1-6.
- ##STR10## wherein;
Specification