Motor driven occlusion controller for liquid infusion and the li

Details Motor driven occlusion controller for liquid infusion and the li Motor driven occlusion controller for liquid infusion and the li

1981-12-31

1983-08-09

Apley, Richard J.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

128DIG13, 137486, 222 14, 222 52, 251 6, 251 9, 251138, 2512495, 604 65, A61M 500

Patent

active

043976425

ABSTRACT:
A parenteral solution administration system having a conduit for communication with a source of parenteral solution, a drip chamber carried by the conduit, drop detector circuit for detecting drops falling through the drip chamber and flow control circuit including an occlusion device moving between first and second positions for opening and closing the conduit. Feedback circuit is provided for controlling the flow control circuit to cause the rate of drops falling through the drip chamber, as sensed by the drop detector circuit, to correspond to a predetermined drop rate. The occlusion device is preferably operated by a stepper motor, and the system is disengagable so that at the occurrence of a predetermined circumstance, the occlusion device can be disengaged from the motor circuit and can be moved without corresponding action of the motor circuit.

REFERENCES:
patent: 3197068 (1965-08-01), Corbin et al.
patent: 3601124 (1971-08-01), Petree
patent: 4105028 (1978-08-01), Sadlier et al.
patent: 4261388 (1981-04-01), Shelton
patent: 4278085 (1981-07-01), Shim
patent: 4355638 (1982-10-01), Iwatschenko et al.

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