Techniques to improve polyurethane membranes for implantable glucose sensors
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United States of America Patent
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Jun 5, 2007
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app pub date -
May 22, 2002
filing date -
May 22, 2002
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Abstract
The invention provides an implantable membrane for regulating the transport of analytes therethrough that includes a matrix including a first polymer; and a second polymer dispersed throughout the matrix, wherein the second polymer forms a network of microdomains which when hydrated are not observable using photomicroscopy at 400.times. magnification or less. In one aspect, the homogeneous membrane of the present invention has hydrophilic domains dispersed substantially throughout a hydrophobic matrix to provide an optimum balance between oxygen and glucose transport to an electrochemical glucose sensor.
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