B. Braun Avitum AG

A method is used to operate a device for extracorporeal blood treatment. The device can perform haemodialysis and hemodiafiltration. During hemodiafiltration, blood is delivered through a blood side of a dialyzer by an electric blood pump. Substituate is delivered by an electric substituate pump. A delivery volumetric flow of the electric substituate pump is adjusted in such a way that a current consumption of the electric blood pump remains within predefinable limit values.

An extracorporeal blood treatment apparatus includes an extracorporeal circuit, a dialysis fluid circuit, and a dialyzer. A blood side and a dialysis fluid side of the dialyzer are separated by a membrane. A control unit automatically empties the dialyzer by setting a reduced pressure or negative pressure in the dialysis fluid circuit and by a passage of fluid from the blood side to the dialysis fluid side via the membrane. Once fluid has passed from the blood side to the dialysis fluid side and the blood side has been emptied, the control unit brings about a passage of air from the blood side to the dialysis fluid side via the membrane, and a displacement of the fluid out of the dialysis fluid side toward a dialysis fluid outflow by continued setting of the reduced pressure or negative pressure in the dialysis fluid circuit.

A dialysis machine includes a removable support plate for a fluid container. The support plate has a first surface and a second opposing surface. The first surface has at least one projection. The second opposing surface differs from the first surface, and can be level or flat. The at least one projection is configured to engage in or be accommodated in a corresponding notch of the fluid container. The support plate is inserted into a receptacle section of the dialysis machine in a first insertion orientation and a second insertion orientation, depending on the shape of the fluid container. The first surface faces the receptacle section when the support plate is in the first insertion orientation. The second surface faces the receptacle section when the support plate is in the second insertion orientation.

A method for leak testing of a heat exchanger of a blood treatment device includes monitoring the time curve of a pressure recorded by a pressure sensor in a first section of a fluid circuit of the blood treatment device in an evaluation period, using a computing system to check whether the time curve of the pressure in the evaluation period fulfills one or more predetermined criteria, and determining a leakage of the heat exchanger when the time curve fulfills the one or more predetermined criteria, with the time curve of the pressure in the evaluation period fulfilling the one or more predetermined criteria. Monitoring the time curve in the evaluation period includes monitoring the time curve during a conveyor operation for pressure build-up/negative pressure build-up and/or after a pressure build-up/negative pressure build-up.

A method for monitoring the reliability of an input in a medical device in which at least one value is entered into the medical device, an occurrence probability density of the at least one value is calculated on the basis of an input history, an error probability of the input is calculated from an a priori error probability density stored in a first database and loaded from the first database and the calculated occurrence probability density, and the error probability is output for further handling of the input.

A peristaltic pump for extracorporeal blood treatment has a pump housing that accommodates a rotor. The rotor is rotatable about a rotor axis. The pump also includes at least two squeeze elements offset in a circumferential direction to each other. The pump housing has a support surface extending arc-shaped about the rotor axis and spaced radially from the rotor. The support surface is configured to support a tube segment inserted radially between the rotor and the support surface. In order to simplify the manual unthreading of the tube segment and thereby largely protect the tube segment, the peristaltic pump has a sliding edge arranged adjacent to the respective squeeze element against the rotational direction of the rotor, extends toward the support surface, is connected to the rotor in a rotationally fixed manner, and can be gripped from below by, or under reached by, the inserted tube segment.

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.

An machine is used for extracorporeal treatment of blood from a patient. The machine includes a dialyzer, a blood circuit with arterial and venous sections, a dialysis fluid circuit, a blood property and/or dialysate property recording unit, and a control unit. The blood treatment machine is configured to perform priming of the extracorporeal blood circuit with priming fluid, request connection of an arterial shunt section with the arterial section filled with priming fluid by priming and/or to ascertain this connection, request connection of a venous shunt section with the venous section filled with priming fluid by the priming and/or to ascertain this connection, and detect and/or quantify and/or check a recirculation and/or a recirculation rate at the shunt depending on a blood and/or dialysate property. A computer-implemented detection method is used for detecting recirculation at a shunt of the machine. The method can be executed with a computer program.

A molded container is configured for containing a medical and/or pharmaceutical preparation and for vertical stacking during transport and/or storage. The container has a bottom portion at one end of a trunk section and a shoulder portion at an opposite end of the trunk section. The shoulder portion includes a container neck that can be closed by a cap. A hollow is recessed in a bottom surface of the bottom portion. The hollow is form-fitted or configured to contactlessly accommodate a container neck of another container. The bottom surface outside the hollow is molded as a relief-like bottom contour surface with at least one axially recessed bottom recess molded segment and with bottom load contact molded segments adjacent to the bottom recess molded segment and axially protruding from it, so that the at least one bottom recess molded segment is exempted from a base area of the molded container.

A method for referencing a pressure or force sensor configured to measure pressure in a tube filled with fluid. The pressure or force sensor is located in an extracorporeal circuit and integrated into or inserted in a clamping device The method includes: (1) referencing a force or pressure reference signal which the pressure or force sensor outputs, with a force or pressure reference signal measured by a force or pressure reference sensor; and (2) using a dialysis fluid side force or pressure reference sensor in a dialysis fluid circuit configured to detect the pressure in the dialysis fluid circuit, for referencing a pressure sensor or force sensor in the extracorporeal circuit. A device uses a dialysis fluid side force or pressure reference sensor in the dialysis fluid circuit that detects pressure in the dialysis fluid circuit, for referencing at least one pressure or force sensor in the extracorporeal circuit.