Abstract: The invention relates to a check valve assembly (100) having an inlet (205) and an outlet for medical fluids, comprising a valve body (101), wherein the check valve assembly (100) in an initial state allows a flow of a working fluid and/or a sterilization fluid through the check valve assembly (100) in both directions of flow, that is from the inlet (205) to the outlet and vice versa, and wherein the check valve assembly (100) in an operating state allows only one direction of flow of the working fluid, wherein the check valve assembly (100) comprises a pin-pin-reception connection, which is embodied so that the check valve assembly (100) can be transferred from the initial state into the operating state by applying force on the pin-pin-reception connection and/or by an impression of path on the pin-pin-reception connection.

Abstract: A blood treatment cassette having a cassette body embodied as a hard part and, optionally, a film which is connected to the hard part and at least partially covers the hard part, wherein the hard part comprises at least one sterilization opening, and wherein the sterilization opening comprises a closure device. The invention also relates to a blood treatment apparatus for using the blood treatment cassette.

Abstract: An apparatus for treating a medical fluid is provided which includes a treatment machine having a coupling surface, with a cassette made of a hard part having liquid-conducting passages which are covered by a flexible film being able to be coupled to the coupling surface of the treatment machine. A corresponding medical cassette is also provided. An air-free coupling of the flexible film of the cassette to the treatment machine is ensured in that air can be sucked out areally along a plane between the flexible film and the coupling surface during the coupling process and/or with a coupled cassette. A method for coupling the cassette and a method for checking the leaktightness of the cassette via the vacuum control of the air suction is also provided.

Abstract: An apparatus for treating a medical liquid is provided which includes a treatment machine having a coupling surface, with a cassette made of a hard part having liquid-conducting passages which are covered by a flexible film being able to be coupled to the coupling surface of the treatment machine. A corresponding medical cassette is also provided. An air-free coupling of the flexible film of the cassette to the treatment machine is ensured in that air can be sucked out areally along a plane between the flexible film and the coupling surface during the coupling process and/or with a coupled cassette. A method for coupling the cassette and a method for checking the leaktightness of the cassette via the vacuum control of the air suction is also provided.

Abstract: A sensor card for determining analytes in liquid and gas samples with films connected to one another in sheetlike fashion, namely a sensor film facing the sample with openings and a covering film remote from the sample with openings for electrical tapping, at least one sensor being provided and arranged between the sensor film and the covering film. There is provided between the sensor film and the covering film at least one intermediate film, in which cutouts are provided, the sensor being arranged in one of the cutouts. The sensor card provides a homogeneous thickness, which brings about a reliable sealing of the flow channels for the liquid sample if the sensor card is connected to a plate that partially forms the flow channels within the analysis system. Furthermore, the invention relates to a method for producing such a sensor card.

Abstract: The present invention relates to an apparatus for treating a medical liquid which includes a treatment machine having a coupling surface, with a cassette made of a hard part having liquid-conducting passages which are covered by a flexible film being able to be coupled to the coupling surface of the treatment machine. The invention furthermore relates to a corresponding medical cassette. In accordance with the invention, an air-free coupling of the flexible film of the cassette to the treatment machine is ensured in that air can be sucked out areally along a plane between the flexible film and the coupling surface during the coupling process and/or with a coupled cassette. The invention equally includes a method for coupling the cassette and a method for checking the leaktightness of the cassette via the vacuum control of the air suction.

Abstract: A sensor card for determining analytes in liquid and gas samples with films connected to one another in sheetlike fashion, namely a sensor film facing the sample with openings and a covering film remote from the sample with openings for electrical tapping, at least one sensor being provided and arranged between the sensor film and the covering film. There is provided between the sensor film and the covering film at least one intermediate film, in which cutouts are provided, the sensor being arranged in one of the cutouts. The sensor card provides a homogeneous thickness, which brings about a reliable sealing of the flow channels for the liquid sample if the sensor card is connected to a plate that partially forms the flow channels within the analysis system. Furthermore, the invention relates to a method for producing such a sensor card.

Abstract: The present invention relates to a pumping device for delivering and metering fluids, in particular medical fluids such as dialysis fluids, with a piston unit having a driving device and a piston and with a membrane unit which has a membrane and a first chamber bordered by the membrane. The pumping device also has a hydraulic unit which has a space to accommodate a hydraulic fluid which is connected to the piston of the piston unit and to the first chamber of the membrane unit. The reliability of metering by such a pumping device is increased by providing a control unit for guaranteeing a predefinable metering rate and/or quantity and also providing a measuring device by means of which the axial position of the piston unit can be determined directly and which can be connected to the control unit.