Functionalized porous substrate for binding chemical and biological moieties
First Claim
Patent Images
1. A material comprising:
- a porous substrate comprising a sintered mixture of polymer particles and functional additive particles, wherein the porous substrate has a surface that comprises at least one of the functional additive particles;
a spacer covalently bound to the at least one functional additive particle; and
a biological or chemical moiety covalently or non-covalently bound to the spacer.
10 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to porous polymeric materials, methods of making them, and applications in medical devices. A specific embodiment of the invention encompasses a material comprising a porous polyolefin substrate containing inclusions of a material to which chemical or biological moieties are attached directly or via a spacer.
-
Citations
25 Claims
-
1. A material comprising:
-
a porous substrate comprising a sintered mixture of polymer particles and functional additive particles, wherein the porous substrate has a surface that comprises at least one of the functional additive particles;
a spacer covalently bound to the at least one functional additive particle; and
a biological or chemical moiety covalently or non-covalently bound to the spacer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
wherein R1 and R2 are each independently hydrogen, substituted or unsubstituted alkyl, aryl, or aralkyl; and
n is an integer from about 1 to about 18.
-
-
12. The material of claim 1, wherein the chemical or biological moiety is a drug, hydrophilic moiety, catalyst, antibiotic, antibody, antimycotic, carbohydrate, cytokine, enzyme, glycoprotein, lipid, nucleic acid, nucleotide, oligonucleotide, peptide, protein, ligand, cell, ribozyme, or a combination thereof.
-
13. The material of claim 10 wherein the spacer to which the porous substrate and biological or chemical moiety is attached is of Formula VIII:
-
wherein the porous substrate is bound to the oxygen atom;
R1 and R2 each independently is hydrogen, substituted or unsubstituted alkyl, aryl, or aralkyl;
X is OH, NH2, CHO, CO2H, NCO, or epoxy;
n is an integer from about 1 to about 5;
m is an integer from about 1 to about 5; and
o is an integer from 0 to about 3.
-
-
14. The material of claim 13 wherein X is CHO or NH2.
-
15. The material of claim 10 wherein the spacer to which the porous substrate and biological or chemical moiety is attached is of Formula IX:
-
wherein the porous substrate is bound to the oxygen atom;
R1 and R2 each independently is hydrogen, substituted or unsubstituted alkyl, aryl, or aralkyl; and
n is from about 1 to about 18.
-
-
16. A material comprising:
-
a porous substrate comprising sintered polyethylene particles and having a surface in which at least one particle of a functional additive has been embedded; and
a spacer precursor of Formula II covalently attached to the at least one particle of functional additive;
wherein R1, R2 and R4 are each independently hydrogen, substituted or unsubstituted alkyl, aryl, or aralkyl;
n is an integer from about 1 to about 18; and
X is OH, NH2, CHO, CO2H, NCO, or epoxy.
-
-
17. A material comprising:
-
a porous substrate comprising sintered polyethylene particles and having a surface in which at least one particle of a functional additive has been embedded; and
a spacer of Formula I;
wherein R1 and R2 are each independently hydrogen, substituted or unsubstituted alkyl, aryl, or aralkyl; and
n is an integer from about 1 to about 18; and
wherein the spacer is covalently attached to the at least one particle of functional additive and to a chemical or biological moiety.- View Dependent Claims (18)
-
-
19. A method of providing a material which comprises:
-
sintering particles of a polymer and particles of a functional additive having functional groups to provide a porous substrate having a surface, wherein the surface comprises at least one of the functional groups;
attaching a spacer to at least one particle of functional additive by contacting a functional group of the at least one particle of functional additive with the spacer under reaction conditions suitable for the formation of a covalent bond between an atom of the functional group and an atom of the spacer; and
contacting the spacer with a chemical or biological moiety under reaction conditions suitable for the formation of a covalent or non-covalent bond between an atom of the spacer and an atom of the chemical or biological moiety. - View Dependent Claims (20, 21)
-
-
22. A method of providing a material which comprises:
-
sintering particles of a polymer and particles of a functional additive having functional groups to provide a porous substrate having a surface, wherein the surface comprises at least one of the functional groups; and
contacting the at least one at the functional groups with a compound of Formula II;
wherein each of R1, R2, and R4 each independently is hydrogen, substituted or unsubstituted alkyl, aryl, or aralkyl;
n is an integer from about 1 to about 18; and
X is OH, NH2, CHO, CO2H, NCO, or epoxy under conditions suitable for the formation of a material of Formula III;
wherein Surface is the surface of the porous substrate. - View Dependent Claims (23, 24, 25)
wherein Moiety is the chemical or biological moiety, and wherein Surface is the surface of the porous substrate.
-
-
24. The method of claim 22 wherein X is NH2 in the material of Formula III, and the material is contacted with a compound of Formula V:
-
25. The method of claim 24, wherein Spacer is a hydrophilic polyurethane, polyethylene glycol, or polyelectrolyte and wherein Z is isocyanurate, aldehyde, amino, carboxylic acid, or N-hydroxysuccimide.
Specification