Patent ID: 6811548
Filing Date: 2004-11-02
Classification: A61M

Abstract:
Materials delivery device for controlling flow of material in administration thereof, comprisinga dispenser body in which material to be dispensed is held and from which it is to be delivered; means for administering material including parts movable relative to the dispenser body to dispense the material therefrom, solenoid means intermittently operable to provide drive force for incremental operation of the means for administering, and drive transmission means comprising a toothed pawl provided on a substantially linear carrier, and toothed actuator means, which is engageable by the toothed pawl and is drivable by the toothed pawl in a one-way non-returnable manner so as to move the means for administering incrementally, in which respect the substantially linear carrier of the toothed pawl is reciprocable in a substantially linear manner, being intermittently driven by the solenoid means in a first direction and being returned under spring-bias in an opposite direction, and the toothed pawl is provided on a deflectable portion of the linear carrier so as to disengage automatically from the toothed actuator means in one of the first or opposite directions.