Hydraulically actuated pump for long duration medicament administration
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United States of America Patent
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May 12, 2009
Grant Date -
Jun 2, 2005
app pub date -
Apr 23, 2004
filing date -
Apr 23, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Presently disclosed is a hydraulic pump device and use thereof, especially in a fluid delivery system. In one embodiment, the fluid delivery system is an inexpensive, single-use device for slow dosing medicament applications. The fluid delivery system may employ a spring-compressed bellows crank or other combination of simple mechanisms operating according to the well-known peristaltic principle to force a volume of ultrapure bio-inert hydraulic fluid through an aperture, thereby expanding one chamber of a two chamber hydraulic cylinder. The second, fluid storage chamber, containing the medicament, is emptied through a conventional orifice in response to the expansion of the pump chamber. The medicament may thence flow through any suitable infusion set into a patient removeably attached thereto.
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