Electroactive polymer actuated medication infusion pumps

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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Details

F04B 43/04 (2006.01) A61M 5/142 (2006.01) A61M 5/145 (2006.01) A61M 5/152 (2006.01) F04B 43/00 (2006.01) F04B 43/08 (2006.01) F04B 45/02 (2006.01)

Patent

CA 2477181

The present invention is directed to a drug delivery pump apparatus, which comprises: (a) an expandable and contractible enclosure having an interior volume that defines a medication reservoir; (b) one or more electroactive polymer actuators; (c) a medication outlet port providing fluid communication between the interior volume of the contractible and expandable enclosure and an exterior of the delivery pump apparatus; and (d) a control unit electrically coupled to the one or more actuators and sending control signals to the same. The one or more electroactive polymer actuators act to reduce the interior volume of the contractible and expandable enclosure based upon the received control signals. The present invention is also directed to a method of delivering a liquid therapeutic agent to a patient. The method comprises: (a) providing the above infusion pump apparatus; (b) placing the outlet port of the infusion pump apparatus in fluid communication with a patient; and (c) sending the control signals to the one or more actuators to reduce the internal volume of the contractible and expandable enclosure, thereby forcing a portion of the liquid therapeutic agent within the medication reservoir through the outlet port and into the patient

L'invention concerne une pompe de délivrance de médicaments, qui comprend: (a) une enceinte pouvant se dilater et se contracter à volume interne qui définit un réservoir de médicaments; (b) un ou plusieurs actionneurs polymères électro-actifs; (c) une sortie de médicaments en communication fluidique entre le volume interne et l'extérieur de la pompe; et (d) une unité de contrôle reliée électriquement au(x) actionneur(s) et lui transmettant des signaux électriques. Le ou les actionneurs réduisent le volume interne en fonction de ces signaux. L'invention concerne également un procédé de délivrance d'agent thérapeutique liquide à un patient. Le procédé comprend les étapes suivantes: (a) établissement de la pompe décrite; (b) mise en communication fluidique de la sortie de pompe avec le patient; et (c) transmission des signaux de contrôle au(x) actionneur(s) pour réduire le volume interne, entraînant une partie de l'agent thérapeutique liquide du réservoir par cette sortie à destination du patient.

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