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Apparatus for drainage of a body cavity includes a housing body defining an inlet chamber and a discharge chamber, with the former having a catheter mounted to one wall thereof and communicating with the inlet chamber, and a one-way elongated valve of the type disclosed in U.S. Pat. No. 3,463,159, a

Apparatus for drainage of a body cavity includes a housing body defining an inlet chamber and a discharge chamber, with the former having a catheter mounted to one wall thereof and communicating with the inlet chamber, and a one-way elongated valve of the type disclosed in U.S. Pat. No. 3,463,159, and commonly known as the Heimlich valve, in fluid communication between the inlet chamber and the drainage chamber. An inlet port is provided in another wall of the housing body defining the inlet chamber which is adapted to reversibly receive a trocar and enable at least a portion of the trocar to pass through the inlet chamber and the catheter to enable the insertion of the catheter into the body cavity to be drained. In one embodiment, a collar is provided to support the open, inlet end of the sleeve of the one-way valve and a bellows-shaped member is provided to support the collar, valve and discharge chamber in spaced relation to the body housing portion defining the inlet chamber. In another embodiment, the inlet end of the sleeve of the one-way valve is fitted to a port of the inlet chamber housing and, optionally, a band thereover can be heat shrunk thereto. A hydrophobic filter is provided along one wall of the discharge chamber to filter gaseous fluids therefrom. Discharge and suction means can also be provided to the discharge chamber.

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Apparatus for drainage of a body cavity, comprising: a housing body having portions defining an inlet chamber and a discharge chamber; said housing body portion defining said inlet chamber having mounting means for supporting a catheter in sealed arrangement therewith and in fluid communication with

Apparatus for drainage of a body cavity, comprising: a housing body having portions defining an inlet chamber and a discharge chamber; said housing body portion defining said inlet chamber having mounting means for supporting a catheter in sealed arrangement therewith and in fluid communication with said inlet chamber; a catheter supported by said mounting means and extending outwardly from said inlet chamber, said catheter being in fluid communication with said inlet chamber; an inlet port in said housing body portion defining said inlet chamber having inlet port sealing means which is adapted to reversibly receive a trocar and enable at least a portion of a trocar to pass through said inlet chamber and said catheter, and said inlet port sealing means for sealing said chamber against the ambient atmosphere in the absence of a trocar, and upon insertion and withdrawal of a trocar from at least said catheter to seal said inlet chamber from the ambient atmosphere; a one-way valve mounted in said housing body and coupling said inlet chamber with said discharge chamber so as to prevent the passage of fluid between said chambers except through said valve, said valve having its inlet end in communication with said inlet chamber, said valve having its outlet end in fluid communication with said discharge chamber, said valve being adapted to permit passage of drainage material passing therethrough from its inlet end to its outlet end.