Compact pump drive system

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/145 (2006.01) A61J 1/00 (2006.01) A61M 5/162 (2006.01) A61M 39/12 (2006.01)

Patent

CA 2345439

An improved pump is provided for controlled delivery of fluids wherein the pump includes a reservoir and a movable piston. A plunger slide is in removable contact with the movable piston. A motor is operably coupled to a drive member, such as a drive screw. The motor is disposed in-line with the drive member and the plunger slide. The drive member is operably connected to the plunger slide and is disposed to be substantially enclosed by the plunger slide when the plunger slide is in at least one position. The drive member is adapted to advance the plunger slide in response to operation of the motor.

La présente invention concerne une pompe améliorée assurant une alimentation précise en liquides, qui comprend un réservoir et un piston mobile. Un plongeur coulissant entre à certains moments en contact avec le piston mobile. Un moteur est couplé de manière fonctionnelle à un élément d'entraînement tel qu'une vis. Le moteur est disposé en ligne par rapport à l'élément d'entraînement et le plongeur coulissant. L'élément d'entraînement est relié de manière fonctionnelle au plongeur est implanté de telle sorte qu'il est sensiblement entouré par le plongeur coulissant dans au moins une position de ce dernier. L'élément d'entraînement est conçu pour faire avancer le plongeur coulissant lorsque le moteur fonctionne.

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