Animas Corporation

Daniel Servansky

William G Saulenas

Daniel L Baker

Described is a drive mechanism for a drug infusion pump. In one embodiment, an in-line drive mechanism is provided that includes a motor operatively coupled to a lead screw, which is configured to engage a piston. The piston includes a cavity to receive the motor and the lead screw such that the lead screw and at least a portion of the motor are substantially contained within the piston cavity when the piston is in a retracted position. In one embodiment, the motor rotates a drive shaft is configured to turn a mechanism comprising a piston, a lead screw, and a housing that cooperate to extend telescopically to drive a plunger into a medicament cartridge, thereby expelling fluid.

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Norristown, PA, United States of America

Daniel Servansky