| 摘要 |
<p>A medication infusion pump (10) is provided for use in the programmable delivery of the selected medication to a patient, wherein the pump (10) includes a fluoropolymer valve seat (38) engageable with a nonmetallic valve member (36). The fluoropolymer valve seat (38) defines a substantially inert and non-adherent 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 (38), in response to relatively high compression forces applied to the medication as the valve member (36) opens and closes. The fluoropolymer valve seat (38) provides a surface which is particularly non-adherent to protein based medications, such as insulin.</p> |
