Lead screw driven syringe with an integral split plunger nut...

Details Lead screw driven syringe with an integral split plunger nut... Lead screw driven syringe with an integral split plunger nut...

A - Human Necessities

61

M

A61M 5/145 (2006.01)

Patent

CA 2554503

An improved reservoir is provided for use in a medication infusion device for operating the reservoir to administer a fluid to a patient. The reservoir comprises a hollow barrel adapted to received a supply of fluid for delivery through infusion tubing or the like to the patient, in combination with a reservoir plunger. The reservoir plunger is designed to engage a motor-driven lead screw of the medication infusion device. The reservoir plunger has an integral split nut connector formed on the end of the plunger, which is in co- axial alignment with the lead screw whereby the split nut connector can be engaged directly to the lead screw.

L'invention concerne un réservoir amélioré utilisé dans un dispositif de perfusion médical afin d'administrer un fluide à un patient. Le réservoir comprend un élément creux adapté pour recevoir une quantité de fluide à administrer au patient par un tube de perfusion ou autre dispositif semblable, et combiné au piston du réservoir. Le piston du réservoir est destiné à venir en contact avec une vis de commande actionnée par moteur du dispositif de perfusion médical. Le piston du réservoir comprend un connecteur à demi-écrou intégré à l'extrémité du piston, aligné de façon coaxiale avec la vis de commande, le connecteur à demi-écrou pouvant ainsi venir directement en contact avec la vis de commande.

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