Apparatus for administering parenteral liquid in sequential...

Details Apparatus for administering parenteral liquid in sequential... Apparatus for administering parenteral liquid in sequential...

A - Human Necessities

61

M

128/91

A61M 5/14 (2006.01) A61M 5/40 (2006.01)

Patent

CA 1108027

APPARATUS FOR ADMINISTERING PARENTERAL LIQUID IN SEQUENTIAL UNITS PROVIDED WITH A BALL VALVE FLOAT Inventors: John M. Hess III Herbert Mittleman ABSTRACT OF THE DISCLOSURE A parenteral liquid administering device includes an enlarged, liquid-holding burette-type chamber for re- ceiving measured aliquots of liquid from a source. The burette has a bottom flow aperture with a valve controlling flow through the aperture. The valve includes a buoyant float ball and a valve seat positioned about the bottom flow aperture to receive the ball, in the absence of suf- ficient liquid to float it, in air-tight, sealing relation. Apertured retention means are provided surrounding the ball which are proportioned to permit it to float in spaced relation from the valve seat in the presence of liquid passing through the apertured retention means.

305992

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