Intravenous liquid leveling device

Details Intravenous liquid leveling device Intravenous liquid leveling device

1982-03-23

1984-06-19

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

222 58, 137408, A61M 514

Patent

active

044551398

ABSTRACT:
The surface of the intravenous liquid in a container is maintained at substantially constant height above the patient by suspending the container from an elastic member which stretches along an axis other than the suspension axis for the container. In this manner, the total vertical length of the intravenous unit, including the container, the elastic member and the support hook, is minimized. In a particular embodiment the elastic member is a spring oriented substantially horizontal and combined with a pulley and idler roller to redirect the suspension cord for the intravenous liquid container. In another embodiment the spring is disposed vertically along an axis parallel to the suspension axis. An alarm circuit includes one or more micro switches which are actuated by the moveable spring-attached pulley to provide an audible or visible alarm indication when the suspension spring retracts to a specified position, thereby indicating that the intravenous container is approaching an empty condition.

REFERENCES:
patent: 2771878 (1956-11-01), Rolland et al.
patent: 3242924 (1966-03-01), Kraft et al.
patent: 4137915 (1979-02-01), Kamen

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