Patents by Inventor WOLFGANG WEHMEYER

WOLFGANG WEHMEYER has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9539387
    Abstract: The invention relates to an insert and a vial for the infusion of a liquid. The vial comprises a hollow body, a grasp portion and a head. The head comprises a delivery opening defining an axis X; a septum for closing the opening; and at least one circumferential push surface next to the head and firmly connected to the grasp portion. The insert is suitable to deliver the liquid and to receive the vial along axis X. The insert comprises a main body with lower ducts, an inner part and a piercing spike. The inner part defines a seat for the vial head, and comprises one slit for engaging the circumferential push surface. The spike is suitable to pierce the vial septum and defines upper ducts. The inner part is able to rotate inside the main body between a fluidly open configuration and a fluidly closed configuration.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: January 10, 2017
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHALND GMBH
    Inventors: Massimo Fini, Alain Veneroni, Wolfgang Wehmeyer, Wolfgang Hofmann
  • Publication number: 20160250406
    Abstract: The present invention relates to a method for controlling a blood treatment apparatus to automatically move it into a certain state after completion of the treatment of a patient carried out with the blood treatment apparatus. It also relates to a control and regulating device and a treatment apparatus. It further relates to a computer program, a computer programme product as well as a digital storage medium.
    Type: Application
    Filed: July 15, 2014
    Publication date: September 1, 2016
    Inventors: Maria Teresa PARISOTTO, Wolfgang WEHMEYER
  • Publication number: 20160158430
    Abstract: The present invention relates to a method for controlling a blood treatment apparatus, with the conveying of blood using a blood pump, with the patient venous tubing clamp closed, until a predetermined volume of fluid has passed out of the blood tubing set through the membrane and into the dialysis fluid chamber. It also relates to a control and regulating apparatus and a treatment apparatus. It further relates to a computer program, a computer program product and a digital storage medium.
    Type: Application
    Filed: July 15, 2014
    Publication date: June 9, 2016
    Inventors: Paul CHAMNEY, Pascal KOPPERSCHMIDT, Wolfgang WEHMEYER
  • Patent number: 9259522
    Abstract: A dialysis supply system that includes a central dialysis liquid manufacturing unit, a dialysis treatment unit, a valve arrangement, and a hydraulic module.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: February 16, 2016
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Wolfgang Wehmeyer, Dietmar Köhler, Matthias Brandl, Benedict Glaser
  • Patent number: 9254464
    Abstract: A filter module includes a first filter stage and a second filter stage which are substantially concentrically arranged. The first filter stage and the second filter stage each include a plurality of hollow fiber membranes having a first fiber end and a second fiber end, which are embedded in a respective casting compound. The first filter stage is a filter stage for the filtration of a first medical fluid, and the second filter stage is a filter stage for the filtration of a second medical fluid. The first filter stage has unilaterally closed fiber ends, and is surrounded by a boundary element which separates the first filter stage and the second filter stage from one another. The boundary element has at least one opening which provides fluid communication between the first filter stage and the second filter stage.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: February 9, 2016
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Torsten Keller, Franz Kugelmann, Wolfgang Wehmeyer
  • Publication number: 20160000988
    Abstract: The present invention relates to a double connector for a tubular insert, intended to connect an extra-corporeal circuit to a peristaltic pump. The double connector comprises: a first channel with an axis a1, a second channel with an axis a2 not parallel to a1, a pressure chamber arranged along the first channel and suitable for co-operation with a pressure sensor. The pressure chamber is closed, on the opposite side with respect to the second channel, by a membrane which extends mainly in a plane n substantially parallel to both the axes a1 and a2. Moreover, a straight line r, passing through both axes a1 and a2 and perpendicular thereto, crosses the membrane. The invention also relates to a tubular insert comprising the double connector and an extra-corporeal circuit comprising the tubular insert.
    Type: Application
    Filed: March 18, 2014
    Publication date: January 7, 2016
    Inventors: Massimo FINI, Reinhold REITER, Wolfgang WEHMEYER
  • Patent number: 9189597
    Abstract: A medical device is configured such that operator inputs are more convenient and more reliable via a touchscreen display. The medical device includes a touchscreen having two redundant finger-position sensors. At least one of the sensors has additional piezoelectric elements, which can modify at least partial areas of the touchscreen such that the sensors are differentiated from their surrounding areas by an elevation, a recess, a vibration or a change in the surface roughness sensed. A control unit differentiates intentional and unintentional operating entries, and in the event of failure of the visual display device of the touchscreen display ensures at least a restricted operability of the touchscreen display.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: November 17, 2015
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Holger Bluemler, Wolfgang Wehmeyer
  • Publication number: 20140067416
    Abstract: An apparatus configured to quantify and display a time buffer for at least one patient during a blood treatment session is described. A blood treatment apparatus which includes such an apparatus or is in signal communication therewith, and a method for quantifying and presenting the time buffer for at least one patient at a blood treatment session are also described, as well as a computer program, a computer program product and a digital storage medium.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 6, 2014
    Inventors: Erik DUELSNER, Marcello MARAZZI, Wolfgang WEHMEYER
  • Publication number: 20130327713
    Abstract: An apparatus for extra-corporeal blood treatment and a method of presetting an initial mode of treatment in the opening phase of an extra-corporeal blood treatment are controlled based on the opening phase of a haemodiafiltration, in which particularly fast removal of electrolytes such as potassium or of urea occurs. The apparatus has a control and computing unit for presetting an initial mode of treatment, in which over a preset interval of time, substituate is fed to the extra-corporeal blood circuit, dialysis fluid is not fed through the dialyser and instead only ultrafiltrate is withdrawn from the dialyser and, on expiry of the preset interval of time, dialysis fluid is fed through the dialyser. Alternatively, dialysis fluid is provided during the preset interval of time through the dialyser at a dialysis fluid flow rate that is smaller than the dialysis fluid flow rate after the preset interval of time has elapsed.
    Type: Application
    Filed: June 6, 2013
    Publication date: December 12, 2013
    Inventors: Tomas Jirka, Joerg Jonas, Volker Nier, Wolfgang Wehmeyer
  • Publication number: 20130303964
    Abstract: An apparatus and method of determining the blood flow rate at which, in an extra-corporeal blood circuit of an extra-corporeal blood treatment apparatus, blood is pumped through the arterial blood line into the blood chamber of the dialyser and out of its blood chamber through the venous blood line is described. The method and apparatus provide for the determination of a plurality of parameters characteristic of the extra-corporeal blood treatment, with a given blood flow rate being determined in each case as a function of one of the characteristic parameters. A blood flow rate which is preset for the blood treatment is selected from the plurality of blood flow rates determined on the basis of the characteristic parameters. The blood flow rate to be preset is selected on the basis of a preset algorithm which may be implemented in software installed on a data processing unit or in hardware.
    Type: Application
    Filed: May 10, 2013
    Publication date: November 14, 2013
    Inventors: Pascal Kopperschmidt, Wolfgang Wehmeyer
  • Publication number: 20130280104
    Abstract: The invention relates to the field of fluid pumps and medical treatment devices, in particular dialysis machines. The object of the invention is to design methods and devices such that the operating pressures and flow rates of the fluid pumps assume the desired characteristics, in particular constant values or controlled profiles. This object is achieved in that the operating point of a peristaltic hose roller pump is adjusted based on the angle of rotation of the pump rotor or by adjusting the operating point of a centrifugal pump in accordance with a profile.
    Type: Application
    Filed: April 16, 2013
    Publication date: October 24, 2013
    Inventors: Alexander HEIDE, Pascal KOPPERSCHMIDT, Ulrich MOISSL, Wolfgang WEHMEYER, Christoph WIKTOR
  • Publication number: 20130255834
    Abstract: The invention relates to an insert and a vial for the infusion of a liquid. The vial comprises a hollow body, a grasp portion and a head. The head comprises a delivery opening defining an axis X; a septum for closing the opening; and at least one circumferential push surface next to the head and firmly connected to the grasp portion. The insert is suitable to deliver the liquid and to receive the vial along axis X. The insert comprises a main body with lower ducts, an inner part and a piercing spike. The inner part defines a seat for the vial head, and comprises one slit for engaging the circumferential push surface. The spike is suitable to pierce the vial septum and defines upper ducts. The inner part is able to rotate inside the main body between a fluidly open configuration and a fluidly closed configuration.
    Type: Application
    Filed: December 1, 2011
    Publication date: October 3, 2013
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Massimo Fini, Alain Veneroni, Wolfgang Wehmeyer, Wolfgang Hofmann
  • Publication number: 20130112629
    Abstract: A medical functional device, provided and designed for single use in a method for extracorporeally treating the blood of a patient, includes at least one process fluid circuit or sections thereof, each provided for receiving a process fluid, at least one first filter device arranged within the process fluid circuit or a section thereof and at least one second filter device arranged within the process fluid circuit or a section thereof. The present invention further relates to a process fluid and a medical treatment apparatus.
    Type: Application
    Filed: June 27, 2011
    Publication date: May 9, 2013
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Matthias Brandl, Michael Herrenbauer, Wolfgang Wehmeyer
  • Publication number: 20130110028
    Abstract: The present invention relates to a valve arrangement for use in an extracorporeal blood circuit having at least one arterial blood line and at least one venous blood line, the valve arrangement having at least one first valve arranged in the arterial blood line, a second valve arranged in the venous blood line, a fourth valve arranged in a first arteriovenous connection line between the arterial blood line of the circuit and the venous blood line of the circuit, and a fifth valve arranged in a second arteriovenous connection line between the arterial blood line and the venous blood line; and/or a third valve arranged for establishing a fluid connection in a blood line between the arterial blood line and the venous blood line of the circuit; and/or a sixth valve arranged between a blood treatment device and an air venting device of the circuit.
    Type: Application
    Filed: May 16, 2011
    Publication date: May 2, 2013
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Angelika Bachmann, Michael Herrenbauer, Wolfgang Wehmeyer
  • Publication number: 20130020250
    Abstract: The present invention relates to a filter module and to a method of manufacturing a hollow fiber membrane bundle having at least two concentrically arranged filter stages. The present invention furthermore relates to a method of manufacturing a hollow fiber membrane bundle, to a disposable and to a blood treatment apparatus.
    Type: Application
    Filed: July 17, 2012
    Publication date: January 24, 2013
    Applicant: Fresenius Medical Care Duetschland GmbH
    Inventors: Torsten KELLER, Franz Kugelmann, Wolfgang Wehmeyer
  • Publication number: 20130001165
    Abstract: The present invention relates to a system for the carrying out of a blood treatment, in particular a dialysis treatment, wherein the system has at least one blood treatment device, in particular a dialyzer, and at least one tank from which treatment fluid, in particular dialysis fluid, is removed during the carrying out of the blood treatment and/or into which consumed treatment fluid, in particular consumed dialysis fluid, is filled during the carrying out of the blood treatment, wherein the tank is an element of at least one mobile apparatus which can be connected to the blood treatment device such that at least one fluid connection can be established between the tank and the blood treatment device.
    Type: Application
    Filed: March 14, 2011
    Publication date: January 3, 2013
    Inventors: Robert Pohlmeier, Michael Herrenbauer, Patricia Goempel-Klein, Alfred Krause, Wolfgang Wehmeyer
  • Publication number: 20120298581
    Abstract: A device (25) and a method for detecting the cause of a deviation from an ideal operating state of an extracorporeal blood treatment, wherein blood to be treated in an extracorporeal blood circulation (9) flows through the blood chamber (3) of a dialyzer (1), subdivided by a semipermeable membrane (2) into a blood chamber (3) and a dialysis fluid chamber (4), and dialysis fluid flows through the dialysis fluid chamber (4). The method includes the following: changing a characteristic (170; 171) of the dialysis fluid upstream from the dialysis fluid chamber (1), measuring a characteristic of the dialysis fluid downstream from the dialysis fluid chamber, determining a dialysance or clearance at a certain point in time during the blood treatment, detecting a deviation in the dialysance or clearance, and detecting the cause of a deviation from an ideal operating state as a function of the certain point in time.
    Type: Application
    Filed: May 23, 2012
    Publication date: November 29, 2012
    Applicant: Fresenius Medical Care Deutschland GmbH
    Inventors: Wolfgang Wehmeyer, Andreas Wuepper
  • Publication number: 20120212434
    Abstract: The invention relates to the field of technical medical devices like dialysis machines. The invention is based on the improvement of a technical medical device in such way that operator inputs are more convenient and more reliable via a touchscreen display. The inventive technical medical device therefore comprises a touchscreen having two redundant finger-position sensors. At least one of these sensors may comprise additional piezoelectric elements, which can modify at least partial areas of the touchscreen such that they are differentiated from their surrounding areas by an elevation, a recess, a vibration or a change in the surface roughness sensed, and it also comprises a control unit for doing so. A control unit differentiates intentional and unintentional operating entries, and in the event of failure of the visual display device of the touchscreen display ensures at least a restricted operability of the touchscreen display.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 23, 2012
    Inventors: Holger Bluemler, Wolfgang Wehmeyer
  • Publication number: 20120175296
    Abstract: A dialysis supply system that includes a central dialysis liquid manufacturing unit, a dialysis treatment unit, a valve arrangement, and a hydraulic module.
    Type: Application
    Filed: January 10, 2012
    Publication date: July 12, 2012
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: WOLFGANG WEHMEYER, DIETMAR KÖHLER, MATTHIAS BRANDL, BENEDICT GLASER