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).

  • Publication number: 20240353022
    Abstract: The invention relates to a flow control device (10) for industrial filter installations, said flow control device comprising: a valve device (20) which is located in a flow line to, in or from a filter installation, the valve device (20) having a closed-loop control section (23) which is connected to the flow line and which can be controlled in a closed-loop manner via at least one deformable membrane (30); a hydraulic device (40) which controls the pressure in a hydraulic duct (32, 46) in a closed-loop manner by means of an actuator (42), the hydraulic duct (32, 46) being connected to the valve device (20) in such a way that the membrane (30) increases or reduces the flow cross-section depending on the pressure in the hydraulic duct (32, 46); a drive (60) for driving the hydraulic device; and an open-loop control unit (80) which controls the flow control device (10) in an open-loop manner.
    Type: Application
    Filed: August 23, 2022
    Publication date: October 24, 2024
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Sebastian-Johannes ARMBRUST, Wolfgang WEHMEYER, Gerhard WIESEN
  • Publication number: 20180236151
    Abstract: The present invention relates to a blood treatment apparatus having an extracorporeal circuit, having a dialyzate circuit and having a dialyzer which has a blood-side chamber and a dialyzate-side chamber which is separated from the blood-side chamber by a membrane, characterized in that the blood-side chamber is in fluid communication with the extracorporeal circuit and the dialyzate-side chamber is in fluid communication with the dialyzate circuit, and having a preparation unit for the online preparation of a solution, characterized in that the blood treatment apparatus has first means for carrying out a priming mode and has second means for carrying out an initial treatment mode, wherein the first means are configured such that they control the preparation unit such that a flushing solution having a pH of ?7.3, and preferably of ?7.
    Type: Application
    Filed: August 10, 2016
    Publication date: August 23, 2018
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Ursula KREUZBERG, Cacilia SCHOLZ, Stefano STUARD, Wolfgang WEHMEYER
  • Publication number: 20170304519
    Abstract: The invention relates to a method and to a device for supplying a dialysis device with dialysate, and to a dialysis device comprising a device for supplying the dialysis device with dialysate. For producing dialysate, a container 13 filled with a pulverulent dialysate concentrate K is provided, the amount of dialysate concentrate in the container being set in such a way that an amount of dialysate sufficient for a specified number of dialysis treatments can be produced using the dialysate concentrate. The method according to the invention and the device according to the invention make it possible to align the amount K2 of concentrate in the container 13 and the planned consumption amount, which is dependent on the prescription from the doctor and the treatment parameters established by the machine. After the individual dialysis treatments have been carried out, it is continuously monitored whether the amount of concentrate is sufficient.
    Type: Application
    Filed: October 14, 2015
    Publication date: October 26, 2017
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Jörg JONAS, Wolfgang WEHMEYER
  • Publication number: 20170290969
    Abstract: The present invention relates to a method and to an apparatus for predicting one or more parameters characteristic for the outcome of a blood treatment, wherein the blood treatment is a treatment in which the blood of the patient has fluid removed via at least one membrane, wherein the parameters are the allowed drinking volume, the hyperhydration or hypohydration of the patient, the clearance of large molecules and/or the allowed salt intake, wherein the prediction of the allowed drinking volume and the prediction of the hyperhydration or hypohydration are carried out on the basis of the planned weight loss due to ultrafiltration, of the drinking quantity during the treatment, of the rinseback volume and of residual diuresis data, and/or wherein the prediction of the clearance of large molecules is carried out on the basis of the urea clearance, and/or wherein the prediction of the allowed salt intake takes place based on the sodium ion quantity removed by ultrafiltration and by diffusion from the blood.
    Type: Application
    Filed: September 15, 2015
    Publication date: October 12, 2017
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Maria MILLAN-GALANTE, Erik DUELSNER, Wolfgang WEHMEYER
  • 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
  • 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
  • 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: 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: 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