Sequence valve for piggyback IV administration with occlusion fa

Details Sequence valve for piggyback IV administration with occlusion fa Sequence valve for piggyback IV administration with occlusion fa

1985-11-14

1987-01-20

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

604250, 128DIG13, 137553, 137595, 251 9, 251 68, A61M 514

Patent

active

046378170

ABSTRACT:
A piggyback IV administration system uses a solenoid actuated sequence valve to control the flow of fluid from a pair of IV fluid sources to the inlet of an IV pump or controller. The sequence valve pinches off a first tube while allowing fluid to flow through the second tube and then, in response to a control signal, changes state so that the second tube is pinched off and fluid can flow through the first tube unimpeded. The sequence valve automatically senses conditions which indicate a failure of the sequence valve to occlude the second tube when the valve changes state.

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patent: 4512764 (1985-04-01), Wunsch
patent: 4533347 (1985-08-01), Deckert

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