Importance

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Abstract

An apparatus is provided suitable for use in draining liquid from inside the human body. The apparatus incorporates two reciprocating pumps and a pair of inlet and outlet valves driven by a common linkage system. One pump draws fluid from a reservoir of additive fluid and mixes the additive with the fluid drawn from the body by the second pump. The mixture is discharged to a common collection means. A pressure sensor terminates the pumping if the fluid pressure in the flow path joining the apparatus with the body becomes abnormal. The apparatus may be mounted externally on the body of the patient and may be driven by a portable source of power. Major components may be changed quickly and easily if the flow capacity is to be changed or if a component must be replaced.

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First Claim