Patent ID: 6083201
Filing Date: 2000-07-04
Classification: A61M

Abstract:
A multi-dose infusion pump comprising:a pump housing having an internal chamber extending along a longitudinal axis and a port for dispensing liquid from said chamber;a piston slidably engaging said chamber of said pump housing and having a peripheral surface;drive means urging said piston along said axis toward said port;a cap rotatably mounted to said pump housing;a plurality of steps spaced at intervals along said axis on one of said piston and said cap; andat least one stop on the other one of said piston and said cap, said stop engaging a selected one of said steps at each of a plurality of rotational positions for said cap, thereby selectively limiting axial movement of said piston toward said port to dispense a predetermined quantity of said liquid, and permitting a series of predetermined quantities of liquid to be dispensed by rotating said cap to align said stop with a sequence of said steps.