Irrigator and tissue separator

Abstract

An irrigation device for injecting and withdrawing liquid from a body cavity, comprising a first chamber separated into two compartments by a partition provided with a one-way valve, wherein one compartment is operatively connected to a rolling diaphragm in combination with a piston member and the other compartment provided with a nozzle adapted to be coupled to a catheter already inserted in the body cavity. A second chamber is removably attached to the first chamber with a gasket and filter member therebetween. With the device filled with irrigating liquid, manually pushing the piston member into the operatively connected compartment forces liquid through the one-way valve into the other compartment and through the nozzle and catheter into the body cavity. Retracting the piston member closes the one-way valve and liquid, as well as any particulate matter, is withdrawn from the body cavity into the second chamber and, in turn, through the filter member into the compartment operatively connected to the rolling diaphragm and piston member, and available for further irrigation of the body cavity. Particulate matter in the withdrawn liquid is retained in the second chamber and available for examination after the lavage.