Water seal water manometer

Details Water seal water manometer Water seal water manometer

1991-11-14

1994-01-18

Shay, Randy C.

Surgery

Means and methods for collecting body fluids or waste material

Aspiration collection container or trap

604321, 604327, A61M 100

Patent

active

052796019

ABSTRACT:
Disclosed is a vacuum regulator apparatus such as for automatically establishing and maintaining a predetermined vacuum for withdrawing fluid from a chest cavity. The apparatus comprises a water manometer or vacuum regulator portion and a water seal portion. Atmospheric air is vented into the vacuum line through the vacuum regulator portion by displacing a predetermined height column of a fluid such as water. A filter is disclosed for preventing the escape of water from the manometer portion of the apparatus into the downstream vacuum source. A second filter is disclosed for permitting two way gas flow at the upstream end of the manometer portion, but for substantially preventing fluid flow in an upstream direction out of the manometer. Fluid fill ports are disclosed on the manometer and water seal portions for permitting infusion of water to precise and repeatable column heights.

REFERENCES:
patent: 4650477 (1987-03-01), Johnson
patent: 4747844 (1988-05-01), Elliott
patent: 4955874 (1990-09-01), Farrar et al.
patent: 4988342 (1991-01-01), Herweck et al.
patent: 5019059 (1991-05-01), Goldberg
patent: 5019060 (1991-05-01), Goosen

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