US 4,468,226 AGranted

Surgical drainage apparatus with incremental suction control and indication

AssigneeBioResearch Inc.

InventorsLeonard D. Kurtz, Joseph M. LiCausi

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Abstract

A surgical drainage unit is provided for draining fluids from the body of a patient wherein the suction pressure, applied through a suction inlet of the unit to draw fluids into the unit, is incrementally controlled and a direct indication of the applied suction pressure is afforded. A device which contracts responsive to an increase in suction in a collection chamber of the unit is equipped with an indicator vane that cooperates with a fixed scale to indicate the amount of movement of the bellows and hence indicate the suction within the collection chamber. A manually adjustable control valve incrementally controls the amount of air admitted to a suction line within the unit to thereby control the applied suction. A negative pressure relief valve is also provided so that excess negativity within the inlet tube can be manually relieved.

Claims15

Dependent claims

A surgical drainage apparatus for draining fluids from the body of a patient, said apparatus comprising:

a container;
a fluid inlet in said container;
a collection chamber formed in said container for collecting fluids received through said fluid inlet;
connection means for connecting said container to a suction source so as to create a suction within said container and thereby draw fluids into said container through said fluid inlet;
manually adjustable, incrementally variable control means for incrementally controlling the amount of suction created within the collection chamber of said container;
indicator means, located within said container and responsive to the suction created within said collection chamber, for providing an indication of the suction created;
and
an underwater seal provided between said fluid inlet and said connection means and a manually actuatable negative pressure relief valve means for fluidly connecting said connection means and said fluid inlet such that excess negative pressure in said fluid inlet is relieved by actuation of said relief valve means.

5 more elements

Dependencies are inferred from the claim text.