Fresenius Medical Care Deutschland Gmbh

Joachim Noack

Pascal Kopperschmidt

Dejan Nikolic

Gerhard Wiesen

Martin Thys

Wei Zhang

Juergen Haecker

Soeren Gronau

Ralf Mueller

Michael Koch

Peter Scheunert

Jürgen Häcker

Goetz Guenther

Ralf Müller

Uwe Lapp

Götz Günther

Ingo Schaefer

Max Fischer

Helmuth Ender

Helge Brauer

Daniel Gerlach

Sören Gronau

Christoph Bocklet

Achim Eberlein

Marco Blasek

Markus Koehler

Walter Ehrenberger

Joerg Dreyhsig

Ingo SCHÄFER

Jürgen Haecker

Jörg Dreyhsig

The present invention relates to a method for checking the conveying accuracy of conveying devices of a blood treatment apparatus. It further relates to a blood treatment apparatus with a control device and/or closed-loop control device, through which the method is effected, a digital storage medium, a computer program product, and a computer program.

Method for checking the conveying accuracy of conveying devices of a medical treatment apparatus, and apparatuses

The present disclosure relates to a medical condensate trap for use in external blood treatment by means of a blood treatment apparatus. The condensate trap comprises an interior; a first connection for connecting the interior in fluid communication to a gas outlet of the blood treatment apparatus; a second connection for connecting the interior in fluid communication to a gas inlet of the blood treatment apparatus; and a third connection for connecting the interior to an air port of a blood treatment device. The blood treatment device may be, for example, a blood tubing set or a blood cassette.

Medical condensate trap for medical use, method for dehumidifying, blood treatment apparatus, blood treatment device

The invention relates to a medical treatment device comprising a fluid system, which has a monitoring apparatusfor monitoring the treatment device, wherein the monitoring apparatusis configured such that monitoring is based on the evaluation of the pressure in the fluid system of the medical treatment device. The invention further relates to a method for monitoring a medical treatment device, in which monitoring is based on the evaluation of the pressure in the fluid system. The treatment device is characterised by a compliance-determining apparatusfor determining the compliance in the fluid system, part of the fluid system or parts of the fluid system, wherein the compliance-determining apparatuscooperates with the monitoring apparatusin such a manner that the pressure-based monitoring takes place depending on the compliance of the fluid system.

Medical treatment device and method for monitoring a medical treatment device

The present invention relates to an apparatus for a pressure-based detection of a clot in an extracorporeal blood circuit, wherein the apparatus comprises at least one cyclically operating pump for conveying the fluid located in the extracorporeal circuit and at least one pressure sensor which is arranged to determine the current pressure development over time in the fluid conveyed by the pump in a current conveying cycle of the pump, wherein the apparatus has at least one memory in which at least one reference pressure development is stored which is based on at least one pressure development over time which was determined in a conveying cycle of the pump preceding the current conveying cycle of the pump, and wherein the apparatus comprises at least one evaluation unit which is configured such that it compares the current pressure development with the reference pressure development over a corresponding time.

Apparatus, system and method for a pressure-based detection of a clot

A method of identifying a type of a filter, which has at least one retentate side and at least one permeate side separated from one another by at least one filter medium, includes generating a pressure in a fluid, in particular in a liquid, on the retentate side or on the permeate side via a pressure source. The method then includes switching off the pressure source, and measuring a pressure development in the fluid over time subsequent to the switching off of the pressure source.

Method of identifying a filter

A method for determining at least one parameter of an extracorporeal blood circuit includes the steps of filling an extracorporeal blood circuit, e.g., encompassing a medical functional device, a treatment device and/or a blood tube set, by introducing a fluid, and detecting a volume of the introduced fluid which is required for filling the extracorporeal blood circuit by a detection device. A control device, a treatment apparatus, a computer readable storage medium, a computer program product as well as a computer program are also described.

Method for determining at least one parameter of an extracorporeal blood circuit as well as apparatuses

The invention relates to a blood treatment device comprising an attachment unitfor attaching a functional unitintended for single use for carrying out the blood treatment. The blood treatment device according to the invention is characterised by a monitoring unitfor monitoring the operability and/or the operating state of the functional unit, which functional unit comprises at least one light transmitterA,A and at least one light receiverB,B. The light transmitter and light receiver are arranged in the monitoring unitaccording to the invention on one side of the functional unit. The arrangement of the light transmitter and light receiver on the same side has the advantage that the monitoring unitcan be integrated into the attachment unitof the blood treatment device without any major structural modifications. The monitoring of the functional unitis based on an optical measurement method in which the light reflected on a part of the functional unitor a part of the attachment unitis detected. A calculation- and evaluation unitis configured such that conclusions can be drawn as to a defective state and/or a certain operating state of the functional unitbased on the intensity of the light falling on the functional unit and the light reflected on the functional unit or the attachment unit.

Blood treatment device comprising a functional unit for carrying out the blood treatment and method for monitoring the functionality and/or the operating state of the functional unit

The present invention relates to a method for removing fluid from a blood filter which is used for the blood treatment of a patient and/or for removing blood from an extracorporeal blood circuit at the end of a blood treatment session. It further relates to a medical treatment apparatus with a control and/or regulating device which executes the method according to the present invention. It further relates to a digital storage medium, a computer program product as well as a computer program for executing the method according to the present invention.

Method for removing fluid from a blood filter at the end of a blood treatment session and treatment apparatus for executing the method

A method of providing a concentrate of a dissolved substance for producing a dialysis solution includes providing a container containing a solid to be dissolved, supplying water into the container for dissolving the solid, draining the concentrate of the dissolved substance from the container and topping up with water, measuring the concentration of the dissolved substance or of a parameter correlated with the concentration, and temporary or permanent suppression of the topping up of water into the container. The suppression is effected when the measured concentration value of the dissolved substance falls below a first limit value or the value of the parameter falls below or exceeds a first limit value or when the change in the concentration value of the dissolved substance or of the value of the parameter exceeds a first limit value.

Method of manufacturing a concentrate

A method of rinsing and/or filling a blood treatment device, in particular for priming a blood treatment device, is associated with a blood treatment device that includes a membrane filter, in particular a hollow fiber membrane filter, a first partial circuit, and a second partial circuit. The first and the second partial circuits are separated by the membrane filter in a semipermeable manner, with temporarily the first partial circuit being first filled with a fluid with a uniform and/or a pulsatile first volumetric flow rate, with the volumetric flow rate not exceeding a specified threshold value at which the fluid has not completely wetted and/or soaked the membrane. The second partial circuit is temporarily open towards the atmosphere, air is displaced from the first partial circuit into the second partial circuit via the membrane, and during filling no negative pressure is applied to the first partial circuit.

Method for rinsing and/or for filling a blood treatment device and blood treatment device

An apparatus and method for blood treatment for the single-needle mode, the apparatus having an extra-corporeal blood circuit with a blood infeed line running to the inlet and a blood return line leading away from the outlet, of a blood treating unit, includes in the blood return line a device, e.g., container, for amassing blood, which is in flow-permitting connection for gas transfer with a device, e.g., container, for storing gas. A pressure is calculated and set in the device for storing gas before the arterial and venous phases are started, with two constraints. First, the pressure should be sufficiently low to ensure both no infusion of air into the patient and also regulated flow of blood into the patient even at opposing pressures lower than ambient pressure. Second, the pressure should be sufficiently high to expel blood from the device for amassing blood into the device for storing gas.

Method of initialising an apparatus for blood treatment in the single-needle mode and apparatus for blood treatment in the single-needle mode

A method for emptying a blood tubing set of a blood treatment device that includes an extracorporeal blood circuit with a membrane filter includes supplying air or gas to the blood tubing set to displace liquid therein. The blood tubing set includes arterial and venous patient blood tubes in communication with a first chamber of the membrane filter. The device also includes a substituate line which opens into the arterial blood tube and/or into the venous blood tube, and a substituate pump. To empty the blood tubing set, the arterial blood tube and the venous blood tube are connected to one another to provide a circuit that includes the membrane filter, the arterial blood tube, and the venous blood tube. The substituate line is disconnected, and the air or gas is pumped into the blood tubing set so as to displace liquid into a second chamber of the membrane filter.

Blood processing device and method for purging a set of blood lines on a blood processing device

An apparatus and a method for monitoring the supply of replacement fluid during an extracorporeal treatment of blood is disclosed. Detection of the supply of replacement fluid upstream or downstream of the dialyser or filter is based on a measurement of the optical or physical density of the blood or of a constituent of blood in the extracorporeal circulation. To detect pre- or post-dilution, the blood flow rate and/or the replacement rate and/or the flow rate of the fluid removed from the blood through the dialyser membrane is altered, and the density of the blood or of the constituent of blood is measured upstream and/or downstream of the dialyser. Additionally, an apparatus for treating blood with an apparatus for monitoring the supply of replacement fluid is disclosed.

Method and apparatus for monitoring the supply of replacement fluid during an extracorporeal treatment of blood

A method and a hemodialysis machine provide for at least partial emptying of an extracorporeal blood circulation after patient blood in the circulation has been returned to the patient via an infusion liquid which displaces the blood. The method includes emptying at least a blood chamber of a hemodialyzer subdivided by a semipermeable membrane into the blood chamber and a dialysis fluid chamber without additionally connecting an arterial blood line and a venous blood line of the circulation to one another. The arterial blood line is actively or passively aerated at a first point and the venous blood line is actively or passively aerated at a second point. The infusion liquid is emptied through the membrane into the dialysis fluid chamber and then via a dialysis fluid discharge line. The method is operable by a control program that runs automatically without requiring any manual input after activation of the program.

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Bad Neustadt, Germany

Joachim Noack