Fluid drug delivery device

A - Human Necessities – 61 – M

Patent

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Details

A61M 1/00 (2006.01) A61M 5/00 (2006.01) A61M 5/14 (2006.01) A61M 5/145 (2006.01) A61M 5/168 (2006.01) A61M 5/20 (2006.01) A61M 37/00 (2006.01)

Patent

CA 2468338

A portable insulin delivery device that supplies insulin in a pre-pressurized chamber (16), passes the insulin through a pressure-dropping labyrinth (22) to a flow control valve (50, 30). The valve (50, 30) is activated by a piezoelectric actuator (26). This allows for precise insulin delivery. An electronic package provides for programming of basal rates and bolus. A pressure sensor (60, 62, 72, 74) relays data concerning normal operation and pressur changes that indicate problems. The processor (100), keyboard (106), display (102), power source (32), fluid pressure sensor (60, 62, 72, 74) and fluid flow control actuator (26) are housed in a base unit. A removable cartridge unit (4) houses the pre-pressurized fluid reservoir (16), flow path labyrinth (22), and flow control valve (50, 30).

L'invention concerne un dispositif de distribution portatif d'insuline alimentant en insuline une chambre déjà sous pression, et l'amenant, via un labyrinthe de détente, à une vanne de commande de débit. La vanne est actionnée au moyen d'un actionneur piézo-électrique. Ce dispositif permet une distribution précise d'insuline. Un ensemble électronique permet de programmer le taux basal et le bolus. Un capteur de pression met en relation des données concernant un fonctionnement normal et des changements de pression indiquant un problème. Le processeur, le clavier, l'affichage, la source d'énergie, le capteur de pression de fluide et l'actionneur de commande de débit de fluide sont logés dans une unité de base. Une cartouche amovible contient le réservoir de fluide sous pression, le labyrinthe d'écoulement et la vanne de commande d'écoulement.

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