Medication infusion pump with fluoropolymer valve seat
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United States of America Patent
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-
Jul 18, 1995
Issued Date -
N/A
app pub date -
Jun 24, 1994
filing date -
Mar 16, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A medication infusion pump is provided for use in the programmable delivery of a selected medication to a patient, wherein the pump includes a fluoropolymer valve seat engageable with a nonmetallic valve member. The fluoropolymer valve seat defines a substantially inert and nonadherent surface to prevent accumulation of medication deposits thereon. Such deposits are believed to occur as a result of shear denaturation and/or precipitation in the vicinity of the valve seat, in response to relatively high compression forces applied to the medication as the valve member opens and closes. The fluoropolymer valve seat provides a surface which is particularly nonadherent to protein based medications, such as insulin.
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