Abstract: A peristaltic pump includes a housing and a rotor that rotates about a rotor axis. The rotor has a rotor body and a pump. The housing has a cut-out in which the rotor is accommodated and a support surface extending about the rotor axis. The support surface supports a tube segment that is introducible between the rotor and support surface. The rotor has a first element for manually actuating the rotor and a first portion for applying a manual rotation actuation force. The first element is mounted on the rotor body and is movable relative to the rotor body between a first position, in which the first portion is spaced from the rotor axis by a first length, and a second position, in which the first portion is spaced from the rotor axis by a second length, the second length being greater than the first length.

Abstract: A medical device for extracorporeal blood treatment having a housing section that is designed such that is can reversibly change between two transparency states by applying an electrical voltage.

Abstract: A holding device for holding and fixing at least one electronic terminal device, in particular of the entertainment electronics type, during a medical treatment, more particularly dialysis treatment. The terminal device is or can be attached to a medical treatment apparatus, such as a dialysis machine, or to a patient bed. The holding device includes an integrated charging unit to supply the held and/or fixed electronic terminal device with power, more particularly from the medical treatment apparatus, with a protection circuit being integrated in the holding device to detect a defect of a terminal device that has just been connected. A charging unit includes an integral power supply unit on a dialysis machine or patient bed having a holding device.

Abstract: A device and method for extracorporeal blood treatment, in particular for hemodialysis, and a method for the balance control of a dialysis fluid in an extracorporeal blood treatment. Sodium balancing can be implemented with improved accuracy during the blood treatment, because distorting effects in the conductivity measurement of the used dialysis fluid can be corrected by taking into account the loading of the used dialysis fluid with urophanic substances, which loading is sensed by an additional measuring apparatus.

Abstract: An extracorporeal blood treatment machine includes a dialyzer and a sensor device downstream of the dialyzer on a dialysis fluid side. The machine is connected to a control and computing unit configured to qualitatively and quantitatively determine at least one preferably selected or selectable blood component in the used dialysis fluid. The control and computing unit is adapted to put the machine into a mode in which a dialysis fluid amount is confined within the dialyzer at least until the concentrations of the blood component on the dialysis fluid side and on the blood side of the dialyzer are in equilibrium, and thereupon to switch the machine into a mode in which the dialysis fluid flow is permitted to leave the dialyzer to feed the confined dialysis fluid amount as a dialysis fluid bolus to the sensor device for determining the blood component concentration contained in the bolus.

Abstract: An extracorporeal blood line set for a blood treatment machine or as part of a blood treatment machine, especially a dialysis machine. The extracorporeal blood line set includes an arterial blood line having a distal patient access and a proximal device port, preferably a dialyzer port, a venous blood line having a distal patient access and a proximal device port, preferably a dialyzer port, and at least one fluid supply line which is connected to the arterial and/or venous blood line(s) in at least one port section of the arterial and/or venous blood line(s) and at one end includes a container port or a fluid container. The at least one port section is in the form of a Venturi nozzle.

Abstract: A device and method of producing dialysis liquid for extracorporeal blood treatment. The device includes a main line for supplying water. An acidic and a basic fluid are introduced in specific dosages. The dosages are set by a control and regulation unit as a function of a chemical and/or physical parameter of the water/fluid mixture. The chemical and/or physical parameter is detected by a measuring device arranged at a section of the main conduit situated downstream of the introduction points for the acidic fluid and for the basic fluid. The control and regulation unit controls introduction of the acidic fluid and basic fluid so that only one of the acidic and basic fluids is introduced into the main conduit over a predetermined period or a predetermined interval. Delivery and introduction of the basic fluid and acidic fluid take place alternately.

Abstract: An apparatus for measuring recirculation using thermodilution during extracorporeal blood treatment including a temperature varying unit arranged to cyclically heat and/or cool blood in a venous tube segment of the blood tube system for a quasi-continuous recirculation measurement; and a detecting device configured to measure a variation of a physical parameter resulting from the heating and/or cooling. The detecting device is arranged to detect, in a case free from recirculation, a first physical parameter and to detect, in a case afflicted with recirculation, a physical parameter varied by the cooling and/or heating of the blood by the temperature varying unit as a second physical parameter in the blood tube system. A method for measuring recirculation carries out appropriate steps.

Abstract: An apparatus and a method for extracorporeal blood treatment, especially for hemodialysis, wherein blood of a patient is flushed with a dialysate in a dialyzer and wherein a variable correlated with the plasma sodium concentration of the blood is measured. The composition of the dialysate then is adjusted in response to the variable measured so that the plasma sodium concentration of the blood at least at the end of the blood treatment has the same value as at the beginning. For measuring the variable correlated with the plasma sodium concentration of the blood, for example a bypass operation can be implemented in which the dialysate is guided past the dialyzer so that a residual volume on the side of the used dialysate at least partially adopts the concentration of the substances dissolved on the blood side.

Abstract: A connector unit for a blood treatment machine connects the blood treatment machine to an external container. The connector unit includes a machine-side line which is designed for being fluid-connected to the blood treatment machine, a container-side line which is designed for being fluid-connected to the container, and an attachment tightly connected to the machine-side line and to the container-side line which is designed for being detachably mounted on a connecting nozzle of the external container so as to fluid-connect the external container to the blood treatment machine. The connector unit can be included on a blood treatment machine.

Abstract: In a multi-sensor device for a medical apparatus at least one first sensor unit and at least one second sensor unit are arranged at a fluid-guiding line connection along which the sensor units detect at least one variable from a flowing fluid in predetermined proximity to each other in such manner that predetermined signal portions occur and are detectable practically simultaneously in outputs of each of the first and second sensor units. In a method for defining a proximity in said multi-sensor device, positions of the individual sensors are varied in the multi-sensor device and the occurrence of predetermined signal portions is detected in at least two signals detected by the individual sensors, and those positions at which the predetermined signal portions occur practically simultaneously are defined as positions of the proximity.

Abstract: An apparatus and a method for preparing dialysis fluid for use in extracorporeal blood treatment, wherein the apparatus includes a main line for the supply of water in the course of which each of an acid fluid and a basic fluid is fed at a particular dosage, wherein the dosage is set by a control and regulating unit as a function of at least one chemical and/or physical parameter of the water-fluid mixture and the parameter is detected by a measuring instrument wherein a first measuring instrument is arranged at a section of the main line located downstream of each of the feeding point for the acid fluid and the feeding point for the basic fluid and the control and regulating unit at least temporarily controls the feeding of the acid and basic fluids such that over a predetermined period of time or a predetermined interval only one from among the acid and basic fluids is fed into the main line.

Abstract: A device for measuring at least one measurand is disclosed which comprises a sensor device with at least one sensor and, via at least one medium-carrying detection path, can be connected to at least one of a plurality of devices outputting at least one flow of a medium to be captured. The at least one sensor is arranged to selectively detect at least one measurand with respect to at least one medium flow output by one of said plurality of devices. A system which includes the sensor device in a centralized way further comprises at least one device outputting the flow of the medium to be measured at least one outlet, wherein one of the devices can be selectively selected and can be connected to the sensor device for a predetermined period of time if several devices outputting a medium flow are connected to the sensor device for measuring at least one measurand.

Abstract: A connector unit for a blood treatment machine connects the blood treatment machine to an external container. The connector unit includes a machine-side line which is designed for being fluid-connected to the blood treatment machine, a container-side line which is designed for being fluid-connected to the container, and an attachment tightly connected to the machine-side line and to the container-side line which is designed for being detachably mounted on a connecting nozzle of the external container so as to fluid-connect the external container to the blood treatment machine. The connector unit can be included on a blood treatment machine.

Abstract: A method and device for linearizing an optical sensor in a dialysis apparatus. The method includes introducing a sensor to the dialysate-side drain line, determining the linear range of the optical sensor, backwards extrapolating the data from the linear range and correcting the data from the non-linear range.

Abstract: In a multi-sensor device for a medical apparatus at least one first sensor unit and at least one second sensor unit are arranged at a fluid-guiding line connection along which the sensor units detect at least one variable from a flowing fluid in predetermined proximity to each other in such manner that predetermined signal portions occur and are detectable practically simultaneously in outputs of each of the first and second sensor units. In a method for defining a proximity in said multi-sensor device, positions of the individual sensors are varied in the multi-sensor device and the occurrence of predetermined signal portions is detected in at least two signals detected by the individual sensors, and those positions at which the predetermined signal portions occur practically simultaneously are defined as positions of the proximity.

Abstract: An apparatus and a method for extracorporeal blood treatment, especially for hemodialysis, wherein blood of a patient is flushed with a dialysate in a dialyzer and wherein a variable correlated with the plasma sodium concentration of the blood is measured. The composition of the dialysate then is adjusted in response to the variable measured so that the plasma sodium concentration of the blood at least at the end of the blood treatment has the same value as at the beginning. For measuring the variable correlated with the plasma sodium concentration of the blood, for example a bypass operation can be implemented in which the dialysate is guided past the dialyzer so that a residual volume on the side of the used dialysate at least partially adopts the concentration of the substances dissolved on the blood side.

Abstract: A method and device for linearizing an optical sensor in a dialysis apparatus. The method includes introducing a sensor to the dialysate-side drain line, determining the linear range of the optical sensor, backwards extrapolating the data from the linear range and correcting the data from the non-linear range.

Abstract: An apparatus and a method for preparing dialysis fluid for use in extracorporeal blood treatment, wherein the apparatus includes a main line for the supply of water in the course of which each of an acid fluid and a basic fluid is fed at a particular dosage, wherein the dosage is set by a control and regulating unit as a function of at least one chemical and/or physical parameter of the water-fluid mixture and the parameter is detected by a measuring instrument wherein a first measuring instrument is arranged at a section of the main line located downstream of each of the feeding point for the acid fluid and the feeding point for the basic fluid and the control and regulating unit at least temporarily controls the feeding of the acid and basic fluids such that over a predetermined period of time or a predetermined interval only one from among the acid and basic fluids is fed into the main line.

Abstract: An apparatus for measuring recirculation using thermodilution during extracorporeal blood treatment including a temperature varying unit arranged to cyclically heat and/or cool blood in a venous tube segment of the blood tube system for a quasi-continuous recirculation measurement; and a detecting device configured to measure a variation of a physical parameter resulting from the heating and/or cooling. The detecting device is arranged to detect, in a case free from recirculation, a first physical parameter and to detect, in a case afflicted with recirculation, a physical parameter varied by the cooling and/or heating of the blood by the temperature varying unit as a second physical parameter in the blood tube system. A method for measuring recirculation carries out appropriate steps.