A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/106
A61M 1/00 (2006.01) A61B 5/03 (2006.01) A61M 1/04 (2006.01)
Patent
CA 1336318
Apparatus for selectively aspirating and draining a body cavity includes a cylindrical housing having a flanged closure at one end from which extends a cannula within a flexible catheter for placement into the cavity. An open discharge port at the other end of the housing is attachable to a suction tube. A pair of cylindrical check valves are coaxially positioned within the housing together with the cannula which includes a sharpened end that retractably extends through the catheter and a self-sealing elastomeric closure plug in each valve. The opposite end of the cannula terminates in one end of a receiver mounted in the housing, the other end being closed with a removable plug and adapted for attachment to an aspirating syringe. A side port of the receiver communicates with a self-supporting balloon that is dimensionally responsive to air pressure within the cavity and therefore functions as a pressure indicator. Withdrawal of the cannula from the cavity and check valves permits drainage of the cavity through the catheter, check valves and suction tube, with the catheter remaining in place unless separately withdrawn.
614453
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