Disposable cassette with negative head height fluid supply...

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

Patent

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Details

F04B 43/02 (2006.01) A61M 5/142 (2006.01) F04B 43/04 (2006.01)

Patent

CA 2187756

A fluid infusion pump includes a disposable cassette (12) having an inlet (16), an outlet (24), and a fluid chamber (36) between the inlet and the outlet. There is a fixed wall (180) of the fluid chamber and a movable wall (182) of the fluid chamber. A pump body (26) receives the cassette in a fixed operating relationship such that an actuator (62) in the pump body is activatable for reciprocal advancement and retraction with respect to the cassette and is adapted to confront the movable diaphragm when the cassette is received in the pump body. There is a detachable coupling (44) between the actuator mounted in the pump body and the movable wall. The disposable cassette further includes an actuating means adapted to magnetically and detachably engage a magnetically attractable means attached to a movable wall of the disposable cassette and a relatively rigid carrier having concave indentations.

Une pompe à perfusion comprend une cassette jetable (12) comportant une entrée (16), une sortie (24) et une chambre de liquide (36) entre l'entrée et la sortie. Ladite chambre comprend une paroi fixe (180) et une paroi mobile (182). Un corps de pompe (26) reçoit la cassette en position de fonctionnement fixe, de telle manière qu'un organe de commande (62) situé dans le corps de pompe puisse effectuer un déplacement alternatif vers l'avant et vers l'arrière par rapport à la cassette, et soit conçu pour venir en contact avec le diaphragme mobile quand la cassette loge dans ledit corps. Un accouplement amovible (44) se trouve entre l'organe de commande monté dans le corps de pompe et la paroi mobile, de sorte que le liquide soit expulsé de la chambre de liquide lorsque l'organe de commande se déplace vers l'avant, et soit aspiré positivement dans ladite chambre lorsque ledit organe se déplace vers l'arrière.

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