Suction control apparatus
AssigneeC. R. Bard, Inc.
InventorJohn R. Nehring
Life of this patent
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Abstract
Disclosed is a chest drainage collection system including a manifold to which a suction control container, a water seal container, and one or more collection containers are releasably secured. The manifold includes a first passage communicating between the suction control and water seal containers and a second passage communicating between the water seal and collection containers. The system includes a suction control apparatus including means for reducing the loss of liquid in the suction control container due to entrainment in air and means for attenuating noise in the suction control container. A flexible plastic sleeve is provided for transmitting atmospheric air into an air chamber above the liquid in the suction control container without contact with the liquid in that container during the transmission.
Claims21
A suction control apparatus comprising:
- a suction control container adapted to receive a predetermined quantity of liquid thereby defining an air chamber above the level of liquid therein, said air chamber being in fluid communication with a vacuum source;
- and
- a passage for communicating atmospheric air external to said apparatus into said suction control container to a location below the level of liquid in said container, said air flowing from said location into said air chamber of said suction control container for controlling the negative pressure of said vacuum source;
- said passage including means for reducing the loss of liquid from said suction control container due to liquid entrainment in the air flowing through the container and for attenuating noise in said suction control apparatus, said latter means including means for transmitting said atmospheric air into said air chamber without contact with the liquid in the suction control container during said transmission of air.
Dependencies are inferred from the claim text.