Patents Assigned to Fresenius Medical Care Deutschland GmbH
  • Patent number: 11904083
    Abstract: The present disclosure relates to various aspects of a procedure for reducing the carbon dioxide content in blood during the treatment of patients. A first aspect of the present disclosure relates to a buffer solution for use in reducing the carbon dioxide content in the blood when treating a patient suffering from pulmonary insufficiency or the complete failure of lung function, wherein the fluid is in gas exchange with a portion of the patient's blood conducted through an extracorporeal circuit. The first aspect of the present disclosure further relates to an apparatus for the extracorporeal reduction of the carbon dioxide content in the blood using said buffer solution. A second aspect of the present disclosure relates to a system for extracorporeal blood treatment, likewise using said buffer solution and the apparatus, and furthermore to a treatment apparatus for extracorporeal blood treatment comprising the aforementioned system.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: February 20, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Petra Abel, Jurgen Klewinghaus, Rolf Zander
  • Publication number: 20240050903
    Abstract: A method is disclosed for cleaning a filter module by means of a filter module having the following steps: providing a filter module having a filter head with two filter head openings; channelling fluid into the filter head via a first filter head opening; and channelling a portion of the fluid out of the filter head via a second filter head opening. The method is characterized in that, after fluid has been channelled into the filter head (210) via a first filter head opening, the fluid is partially swirled in the filter head.
    Type: Application
    Filed: December 21, 2021
    Publication date: February 15, 2024
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Thomas HEINZ, Sven REITER, Wehmeyer WOLFGANG, Gerhard WIESEN
  • Patent number: 11896747
    Abstract: A medical treatment machine, such as a home dialysis machine, can receive prescription parameters that define parameters of a medical treatment to be administered to a patient. A medical prescription is entered by a clinician into a clinical information system (CIS) that calls a system to evaluate the compatibility of the entered prescription by transmitting the prescription parameters to a server that has access to a database of medical devices and their operational parameters. The server compares the treatment parameters of the medical prescription to the operational parameters of the medical device and generates a prescription compatibility response indicting if the treatment parameters of the medical prescription can be executed by the medical device. The server returns to the CIS the prescription compatibility response to allow the prescription, e.g. in a digital or program form, to be securely transmitted or delivered via a connected health system to the medical device.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: February 13, 2024
    Assignees: Fresenius Medical Care Holdings, Inc., Fresenius Medical Care Deutschland GmbH
    Inventors: Paul Chamney, Harvey Cohen
  • Patent number: 11896749
    Abstract: Dialyzer systems can consolidate multiple technologies and functionalities of blood treatment systems in a significantly integrated fashion. For example, this disclosure describes dialyzer systems that include a magnetically driven and magnetically levitating pump rotor integrated into the dialyzer. Such a dialyzer can be used with treatment modules that include a magnetic field-generating pump drive unit. In some embodiments, the dialyzers include pressure sensor chambers with flexible membranes with which corresponding pressure transducers of the treatment modules can interface to detect arterial and/or venous pressures.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: February 13, 2024
    Assignees: Fresenius Medical Care Deutschland GmbH, Fresenius Medical Care Holdings, Inc.
    Inventors: Massimo Earl Fini, Lynn E. Jensen, Dacey John Ryan, Alexander Heide, Dejan Nikolic, Arne Peters
  • Patent number: 11890400
    Abstract: The present invention relates to a device (1) and a corresponding method for determining residual blood in a dialyzer (2) comprising a holding device (6) configured to accommodate a dialyzer (2), an image capturing device (7) configured to capture at least one image of a dialyzer (2) accommodated by the holding device (6), in particular a filter (4) located in the dialyzer (2), and generate corresponding image data having a plurality of image points, each of which assigned at least one respective intensity value, in particular a color value, and a control device (9) configured to determine residual blood information characterizing the presence and/or content of residual blood in the dialyzer (2) on the basis of a statistical frequency of at least a portion of the intensity values in the at least one image. The invention further relates to a dialysis system having such a device (1).
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: February 6, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Ansgar Erlenkoetter, Lukas Utzig
  • Patent number: 11890402
    Abstract: The invention relates to an extracorporeal blood treatment device for carrying out an extracorporeal blood treatment, in which blood flows in an extracorporeal blood circuit A through the blood chamber 2 of a dialyser 1 which is divided by a semi-permeable membrane 4 into the blood chamber 2 and a dialysate chamber 3. The invention further relates a method for monitoring the integrity of a dialyser 1. The blood treatment device provides a preparation mode in preparation for the blood treatment, in which the dialysate chamber 3 of the dialyser 1 (filter) is filled with a liquid, while the blood chamber 2 is not filled with blood, and a treatment mode following the preparation mode, in which blood is conveyed through the blood chamber 2. For monitoring the integrity of the dialyser 1, in the preparation mode the fluid system B including the dialysate chamber 3, or a portion of the fluid system including the dialysate chamber, is filled with a liquid.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: February 6, 2024
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Jurgen Hacker, Soren Gronau
  • Patent number: 11890444
    Abstract: The invention relates to a connector (1) constituted by: base provided with a tubular wall (13) closed by a bottom wall (11) provided with at least one through-opening (111); a membrane provided with a flexible wall (23) having a central opening, a tubing (22) placed in the opening of the flexible wall; sealing means for preventing a liquid from leaving the connector through the tubing. The base and the membrane are fixed to each other in a liquid-tight manner. The flexible wall allows axial displacement of the tubing so that it can be moved between a closed position, in which a liquid cannot leave the connector through the conduit of the tubing, and an open position, in which a liquid from can leave the connector through the tubing. Retaining means (121, 222a) maintain the tubing (22) closed with a force that can be overcome manually to open it.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: February 6, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Joanna Charre, Francois Dumont D'Ayot, Philippe Laffay
  • Publication number: 20240033409
    Abstract: The present invention relates to a membrane gas exchanger having a housing in which a first chamber and a second chamber as well as a membrane are arranged, wherein the membrane is gas permeable and liquid impermeable and separates the first chamber and the second chamber from one another, wherein the first chamber forms the blood side and the second chamber forms the gas side of the membrane gas exchanger, and wherein the first chamber has a blood inlet and a blood outlet, and wherein the second chamber has a gas inlet and a gas outlet, and wherein the blood inlet, the blood outlet, the gas inlet, and the gas outlet are arranged at the housing, wherein the housing is the housing of a dialyzer, and wherein a first adapter is provided that has an inlet and at least two outlets, with the inlet being connected to the gas outlet of the housing.
    Type: Application
    Filed: December 3, 2021
    Publication date: February 1, 2024
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventor: Jürgen KLEWINGHAUS
  • Patent number: 11883639
    Abstract: The present invention relates to a gear pump having a housing that has an inflow for the liquid to be conveyed, that has an outflow for the conveyed liquid, and that has a pump chamber in which the gear or gears for conveying the liquid are present, with at least one bearing position being present in the housing, in which bearing position at least one gear is rotatably received, wherein the inflow is in a different plane than the outflow; and wherein at least one first flushing passage that extends up to the bearing position(s) is in direct or indirect fluid communication with the inflow and/or with the outflow.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: January 30, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventor: Simone Lippert
  • Patent number: 11883572
    Abstract: The present invention relates to a dialysis machine that is configured to be equipped with an extracorporeal blood system comprising a dialysis solution system that is configured to be equipped with a dialyzer, wherein a mixing region, in particular a mixing chamber, is provided in which the fresh dialysis solution or a component thereof is located in the operation of the dialysis machine, with a concentrate line being in fluid communication with the mixing region, through which concentrate line concentrate can be conducted from a concentrate container into the mixing region, wherein at least two electrically conductive elements are arranged spaced apart from one another in or at the concentrate line or lines; that a measuring device is provided which is electrically connected to the conductive elements and which is configured to measure the conductance or a value correlated therewith between them; and that a control unit is provided which is configured to compare the measured value with a desired value, with
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: January 30, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Tobias Irrgang, Tilman Stäblein, Alfred Gagel, Peter Klöffel
  • Patent number: 11878275
    Abstract: The invention relates to a method for potting hollow fiber membranes in potting compounds of increased temperature resistance, wherein an isocyanate component with inorganic particles and a polyol component are processed into a potting compound and the hollow fiber membranes are tightly encased by the potting compound in at least one potting zone by the hardening of said potting compound.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: January 23, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Matthias Faust, Manuel Wilhelm
  • Patent number: 11878099
    Abstract: The present invention relates to a method and to an apparatus for preparing a dialysis solution, wherein the apparatus has a first circuit and a second circuit, wherein the first circuit has a container for receiving the consumed dialysis solution or fresh water or another fluid, the primary side of a filter connected downstream of the container, and a return line from the primary side of the filter into the container, wherein the filter is configured to prepare purified water from the consumed dialysis solution or from fresh water or from another fluid, and wherein the second circuit has the secondary side of the filter, the dialyzate side of a dialyzer, a reservoir, a line that leads from the reservoir to the secondary side of the filter, by means of which dialyzate or a dialyzate concentrate can be supplied to the secondary side of the filter, and a filtrate line that leads away from the secondary side of the filter.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: January 23, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Torsten Keller, Stefan Konrad Marterstock
  • Publication number: 20240016990
    Abstract: The present invention relates to a method for automatically verifying correct setup of a blood treatment apparatus, in particular a gravimetric cycler for peritoneal dialysis having only one scale and a hose system, wherein the hose system comprises at least three line portions for connection to at least one drainage bag, at least one solution bag and a patient, wherein, by means of the scale, a change in weight of the solution bag and/or the drainage bag during a filling process of the hose system is detected and compared to an expected value. Furthermore, the invention relates to a corresponding blood treatment apparatus.
    Type: Application
    Filed: December 2, 2021
    Publication date: January 18, 2024
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Klaus WOLF, Bernd MOHR, Manuel HASSLER
  • Patent number: 11872530
    Abstract: The invention relates to the providing of hydrophobic and hydrophilic polymer-based hollow fiber membranes containing a water-insoluble antioxidant; in particular, the invention relates to the providing of hollow fiber membranes for the extracorporeal treatment of blood, wherein the hollow fiber membranes have improved biocompatibility relative to treatment blood, in particular improved complement activation and lower platelet loss vis-à-vis treatment blood. At the same time, the elution of hydrophilic polymers from the lumen of the hollow fiber membrane is reduced.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: January 16, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Michael Paul, Rainer Fislage, Dietmar Hansel
  • Patent number: 11872336
    Abstract: The present invention relates to a dialysis machine having a dialyzer, an extracorporeal blood circuit, a dialysis solution circuit, and a control unit, wherein a blood leak sensor is arranged downstream of the dialyzer in the dialysis solution circuit, wherein the control unit is configured to initiate an error routine when the signal of the blood leak sensor shows an indication of a presumed blood leak, and wherein a further sensor is furthermore arranged downstream of the dialyzer in the dialysis solution circuit, wherein the control unit is configured to use the signal of the further sensor correlated in time with the signal of the blood leak sensor as a suppression criterion for the initiation of the error routine.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: January 16, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventor: Reiner Spickermann
  • Patent number: 11869660
    Abstract: The invention relates to the field of medical fluid management devices, in particular dialysis machines. The object of the invention is to design methods and devices, such that the monitoring and control of medical fluid management devices from a remote site are possible. To do so, the screen content of the output device of a fluid management device is transmitted at least partially to an output device of a remote control unit. The screen content optionally has user interfaces, which can be selected on the remote control device and lead to changes in the control of the transmitting medical fluid management device.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: January 9, 2024
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Georg Brand, Daniel Hauck, Peter Kloeffel, Thomas Stahl
  • Patent number: 11857711
    Abstract: A method for setting a control device or a closed-loop control device of a blood treatment apparatus, includes providing, determining or reading out a correction factor and correcting the flow value and/or the treatment target entered by the user by or about the correction factor. Furthermore, the present disclosure relates to a blood treatment apparatus, a digital storage medium, a computer program product, and a computer program.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: January 2, 2024
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventor: Juergen Klewinghaus
  • Patent number: 11857494
    Abstract: The present invention relates to a peritoneal dialysis system comprising at least one peritoneal dialysis machine and at least one organization system that is configured to carry the peritoneal dialysis machine and/or one or more functional elements that are connected to the peritoneal dialysis machine or are connectable thereto, wherein the organization system can be folded for purposes of transport or storage and can be set up, starting from the folded state, into its functional state for the purpose of carrying out the peritoneal dialysis treatment, with the organization system having one or more carrier elements for carrying the peritoneal dialysis machine itself and/or the functional element or elements at least in its set up functional state.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: January 2, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Klaus Wolf, Manuel Hassler
  • Patent number: 11844889
    Abstract: An extracorporeal blood treatment device is provided that includes a hydraulic system having a plurality of flow paths. A control unit provides an operating mode for disinfecting the hydraulic system with a liquid supplied via one of the flow paths. A method for operating the extracorporeal blood treatment device is also provided. The hydraulic system has a valve device that provides several switching positions. The valve device has an inlet for a liquid for disinfecting the hydraulic system, and a plurality of outlets. In a first switching position, the inlet is connected to one of the outlets. In another switching position, the inlet is connected to a plurality of the outlets. The inlet of the valve device is in fluid communication with a first flow path and the outlets are in fluid communication with another flow path. Disinfecting liquid can simultaneously be supplied to the individual flow paths.
    Type: Grant
    Filed: November 18, 2022
    Date of Patent: December 19, 2023
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventor: Tobias Irrgang
  • Patent number: 11839710
    Abstract: A dialysis machine has a balancing system with a balancing chamber for a volumetrically exact supply and removal of dialysis solution to and from a dialyzer fluidically connected to the balancing system in operation; a water inlet system connected to the balancing system for the supply of fresh dialysis liquid, with the water inlet system having an apparatus for degassing water that is connected to an air separator of the dialysis machine, with a first subsection of the air separator serving as a mixing chamber and being connectable to at least one concentrate source via at least one concentrate line and being in fluid communication with the balancing system via at least one dialysate line, wherein the filling volume of a balancing chamber corresponds to or exceeds the sum of the volume of the mixing chamber and the inner volume of the dialysate line.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: December 12, 2023
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Peter Klöffel, Tilman Stäblein, Andreas Syfonios, Dirk Hümmer, Tobias Irrgang, Benedict Glaser