Biosensor membrane composition, biosensor, and methods for making same
First Claim
1. A selectively permeable membrane for a biosensor, comprising:
- a solvent cast film which comprises a mixture ofa first polyether-based thermoplastic polyurethane copolymer, anda polyether-based polyurethane copolymer,wherein the polyether-based thermoplastic polyurethane copolymer, or the polyether-based polyurethane copolymer, or both comprise at least one siloxane repeat unit.
2 Assignments
0 Petitions
Accused Products
Abstract
Selectively permeable membranes for biosensors are provided. In one embodiment, the membrane includes a polymer mixture that includes a polyurethane component, a siloxane component, and a hydrogel component, the components in the mixture in amounts of about 60 to about 80 wt % polyurethane, about 10 to about 20 wt % siloxane, and about 10 to about 20 wt % hydrogel. The membrane has a surface restructured to be hydrophilic, with the restructured surface being crosslinked ed via reactive end groups on at least one of the polyurethane, the siloxane, and the hydrogel components. In another embodiment, the membrane includes a solvent cast film which includes a mixture of a first polyether-based thermoplastic polyurethane copolymer, a polyether-based polyurethane copolymer, and, optionally, a second polyether-based thermoplastic polyurethane copolymer.
27 Citations
14 Claims
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1. A selectively permeable membrane for a biosensor, comprising:
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a solvent cast film which comprises a mixture of a first polyether-based thermoplastic polyurethane copolymer, and a polyether-based polyurethane copolymer, wherein the polyether-based thermoplastic polyurethane copolymer, or the polyether-based polyurethane copolymer, or both comprise at least one siloxane repeat unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A selectively permeable membrane for a biosensor, comprising:
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a solvent cast film which consists essentially of a mixture of a polyether-based thermoplastic polyurethane copolymer, and a polyether-based polyurethane copolymer, wherein the polyether-based thermoplastic polyurethane copolymer, or the polyether-based polyurethane copolymer, or both comprise at least one siloxane repeat unit. - View Dependent Claims (11)
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12. A selectively permeable membrane for a biosensor, comprising:
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a solvent cast film which consists essentially of a mixture of a first polyether-based thermoplastic polyurethane copolymer, a polyether-based polyurethane copolymer, and a second polyether-based thermoplastic polyurethane copolymer that is different from the first polyether-based thermoplastic polyurethane copolymer, wherein at least one of the first polyether-based thermoplastic polyurethane copolymer, the polyether-based polyurethane copolymer, and the second polyether-based thermoplastic polyurethane copolymer comprises at least one siloxane repeat unit. - View Dependent Claims (13, 14)
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Specification