Pumps – Condition responsive control of pump drive motor – Single motor control element responsive to means sensing...
Patent
1990-04-25
1993-01-05
Bertsch, Richard A.
Pumps
Condition responsive control of pump drive motor
Single motor control element responsive to means sensing...
417415, F04B 1702, F04B 4900
Patent
active
051765020
ABSTRACT:
A syringe pump comprises a housing with a syringe retainer. The syringe includes a barrel for liquid medication and a plunger movably positioned in the barrel for expelling the medication. A driver is movably mounted on the housing for engagement with the plunger. A control mechanism within the housing regulates the rate of movement of the driver and plunger during delivery of medication. A monitoring circuit connected to receive signals from a potentiometer and a movable contact associated with the driver indicates driver motion. A microprocessor with memory includes a preset standard to which the signal of motion from the driver is compared. An additional input signal, of motion from a rotary indicator associated with a part of the driver movement motor assembly, is provided to the memory and is compared to plunger travel into the barrel.
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Massaglia Mario
Palmer Mitchell J.
Sanderson George G.
Basichas Alfred
Becton Dickinson and Company
Bertsch Richard A.
Passman Aaron
Schwarz Michael G.
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