Blood-contacting medical device and method
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United States of America Patent
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Oct 13, 1998
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N/A
app pub date -
Jun 7, 1995
filing date -
Jun 7, 1995
priority date (Note) -
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Abstract
A method for making a blood-contacting medical device with improved biocompatibility by applying to the blood-contacting surface an aqueous solution of heparin and then overcoating the heparin with a porous polymer. The inclusion of a porous polymer in intimate contact with a heparin on the device controls the administration of heparin following implantation or other blood contact. The adhesion of the coating and the rate at which the heparin is delivered can be controlled by the selection of an appropriate bioabsorbable or biostable polymer.
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