Patent ID: 7867189
Filing Date: 2011-01-11
Classification: A61M

Abstract:
1. A peritoneal dialysis machine comprising: a hardware unit including at least one pump actuator having a motor, a rotational to translational converting apparatus coupled to the motor and a pump head coupled to the converting apparatus, at least one valve actuator and a disposable cassette interface forming a wall of the hardware unit for interfacing with a disposable cassette, the cassette interface including: a plate having at least a portion that is substantially flat and that faces an at least substantially flat flexible sheet of the cassette when loaded into the machine; at least one pump aperture defined by the at least portion of the plate that is substantially flat; the at least one pump head translated via the rotational to translational conversion by the motor and the converting apparatus to be moveable out of and retractable into the at least one pump aperture to operate a corresponding pumping portion of the flexible sheet of the cassette, the pump head defining an aperture that enables a vacuum to be pulled through the pump head to the flexible sheet; at least one valve aperture defined by the at least portion of the plate that is substantially flat; at least one valve apparatus moveable out of and retractable into the at least one valve aperture to operate a valve portion of the flexible sheet of the cassette; at least one sensor aperture defined by the at least portion of the plate that is substantially flat; and at least one sensor located in the least one sensor aperture, the at least one sensor operable with a sensor portion of the flexible sheet of the cassette.