Polyurethane/polyurea compositions containing silicone for biosensor membranes
First Claim
1. An implantable biosensor for measuring the reaction of an analyte and oxygen, said biosensor having a biocompatible membrane for controlling the permeability of analyte and oxygen to the biosensor elements, said membrane comprising a homogenous polymer composition comprising the reaction products of at least one diisocyanate, at least one hydrophilic diol or diamine, and at least one silicone material.
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Abstract
A homogenous polymer composition useful as a membrane for biosensors is disclosed. The polymer composition comprises the reaction products of a diisocyanate, a hydrophilic diol or diamine, and a silicone material. An aliphatic diol or diamine may also be included. Membranes prepared from the composition allow for increasing oxygen permeability and decreased analyte permeability (e.g. glucose). They also possess the necessary physical properties of an outer polymeric biosensor membrane.
849 Citations
7 Claims
- 1. An implantable biosensor for measuring the reaction of an analyte and oxygen, said biosensor having a biocompatible membrane for controlling the permeability of analyte and oxygen to the biosensor elements, said membrane comprising a homogenous polymer composition comprising the reaction products of at least one diisocyanate, at least one hydrophilic diol or diamine, and at least one silicone material.
Specification