Becton Dickinson and Company Limited

Muzaffer Yalgin Ozsecen

J Richard Gyory

Alessandro Egidio Pizzochero

Eric Hassenpflug

Mark Wood

Cory Baker

Scott Stewart

Jeffrey Held

Abigail Kruegle

Timothy Blum

A medication delivery device includes an infusion pump system having a reservoir, a fluid path connected between the reservoir and an insertion mechanism, a plunger arranged inside the reservoir, and a pump drive mechanism coupled with the reservoir. The medication delivery device further includes a processing device configured to determine a user fill volume of a fluid medication by analyzing a location of the plunger inside the reservoir when a fill of the fluid medication is completed. The processing device is configured to determine the user fill volume of the fluid medication by sensing a pressure inside the reservoir.

Apparatuses and methods for detecting user fill volume in medication delivery device

A fluid delivery device has a syringe barrel-type reservoir with plunger, and plunger driver assembly comprising double-acting, telescoping lead screws that is located behind and outside of the barrel. Simultaneously and counter-rotating sleeve screw and center screw telescope out of a nested configuration of the plunger driver assembly and into the reservoir at a rate of double their individual and equal pitch and lead parameters when the sleeve screw is rotated. A threaded nut and gear anchor disposed on an end of the barrel receive the sleeve screw and the threaded nut causes the sleeve screw to translate and rotate in response to motor operation. A distal end of the center screw can be keyed to a plunger pusher for anti-rotation constraint when the motor is imparting rotation on the threaded nut and sleeve screw.

Double-acting, telescoping screw-driven pump mechanism disposed externally to reservoir in fluid delivery device

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Groton, MA, United States of America

Muzaffer Yalgin Ozsecen