Intravenous feeding pump timer

Details Intravenous feeding pump timer Intravenous feeding pump timer

1974-10-11

1976-11-02

Camby, John J.

Electricity: circuit makers and breakers

Retarded

Clock train

128214E, 417 12, 74 354, H01H 4300

Patent

active

039899136

ABSTRACT:
The present invention relates to a timing device for an intravenous feeding pump, whereby the pump can be set to operate at its regular rate for a predetermined period (preferably up to about 4 hours) and thereafter at a reduced rate just sufficient to keep the needle open. The apparatus comprises a gear train driven by the main drive shaft of the intravenous feeding pump actuator, which drives a setting dial at a considerably reduced speed back to a "0" position. The setting dial is clutched to a final gear of the gear train through a spring slip clutch, so that the setting dial can be set to a desired position without driving the gear train or the gear train continue to drive even though the setting dial is latched in its 0 position. When the control knob is in the active position, means is provided when the setting dial returns to its 0 position to actuate an alarm device, such as a light, or a buzzer, or both, and to switch the power circuit of the drive motor into a reduced motor speed for a "keep-open" rate of feed to the needle.

REFERENCES:
patent: 2301556 (1942-11-01), Maris
patent: 3175416 (1965-03-01), Rogerson
patent: 3456648 (1969-07-01), Lee et al.
patent: 3456649 (1969-07-01), Jewett
patent: 3798982 (1974-03-01), Lundquist

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