Patent ID: 6248093
Filing Date: 2001-06-19
Classification: A61M,Y10S

Abstract:
A portable medical device for dispensing liquid from a liquid reservoir having a piston which defines an axis of travel, the medical device comprising:a drive motor having a rotating drive shaft which defines an axis of rotation, said drive shaft axis of rotation being coaxially aligned with the piston axis of travel;a gearbox coupled to the drive motor drive shaft;at least one plunger slider coupled to the gearbox and adapted to translate from a retracted position to an extended position to displace the piston along the piston axis of travel in response to rotation of the drive motor drive shaft wherein the at least one plunger slider substantially radially surrounds at least a portion of a length of the gearbox when the at least one plunger slider is in the retracted position; anda releasable coupler adapted to releasably couple the at least one plunger slider to the piston.