Hydraulically actuated pump for long duration medicament...

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/145 (2006.01) A61M 5/148 (2006.01)

Patent

CA 2523267

Presently disclosed is a hydraulic pump device and its 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 (110) of a two chamber hydraulic cylinder. The second, fluid storage chamber (120), containing the medicament, is emptied through a conventional orifice (140) 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.

L'invention porte sur une pompe hydraulique et son utilisation spécialement dans un système d'administration de fluides. Dans une exécution, le système est un dispositif peu coûteux à jeter permettant d'instiller lentement des médicaments. Ledit système peut utiliser un soufflet bielle comprimé par ressort ou tout autre combinaison de mécanismes simples fonctionnant selon le principe péristaltique bien connu, pour forcer un volume de fluide bioinerte ultrapur dans une ouverture de manière à provoquer l'expansion d'un des réservoirs d'un cylindre hydraulique à double effet. Le deuxième réservoir de fluide qui contient le médicament se vide par un orifice classique en réponse à l'expansion du réservoir de pompe. Le médicament peut alors s'écouler dans tout dispositif d'infusion réversiblement fixé à un patient.

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