Patents by Inventor Helmut Hildwein

Helmut Hildwein 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: 20220023803
    Abstract: The present invention relates to a continuous process for preparing permselective hollow fiber membranes being suitable e.g. for hemodialysis, hemodiafiltration and hemofiltration of blood which comprises a two-stage drying and tempering treatment of the hollow fiber membranes. According to a further aspect, the invention relates to a continuous process for drying permselective hollow fiber membranes on-line. The invention also relates to devices for on-line drying of permselective hollow fiber membranes.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 27, 2022
    Inventors: Ulrich BAUER, Reinhold BUCK, Juergen GRAF, Helmut HILDWEIN, Bernd KRAUSE, Markus STORR, Arnd WOCHNER
  • Patent number: 11154820
    Abstract: The present invention relates to a continuous process for preparing permselective hollow fiber membranes being suitable e.g. for hemodialysis, hemodiafiltration and hemofiltration of blood which comprises a two-stage drying and tempering treatment of the hollow fiber membranes. According to a further aspect, the invention relates to a continuous process for drying permselective hollow fiber membranes on-line. The invention also relates to devices for on-line drying of permselective hollow fiber membranes.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: October 26, 2021
    Assignee: GAMBRO LUNDIA AB
    Inventors: Ulrich Bauer, Reinhold Buck, Juergen Graf, Helmut Hildwein, Bernd Krause, Markus Storr, Arnd Wochner
  • Patent number: 10022481
    Abstract: The present disclosure relates to capillary dialyzers for blood purification comprising from 85-95% crimped fibers and from 5-15% non-crimped fibers.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: July 17, 2018
    Assignee: GAMBRO LUNDIA AB
    Inventors: Markus Hornung, Arnd Wochner, Reinhold Buck, Helmut Hildwein, Nikolaus Kanarjow
  • Publication number: 20170368507
    Abstract: The present invention relates to a continuous process for preparing permselective hollow fiber membranes being suitable e.g. for hemodialysis, hemodiafiltration and hemofiltration of blood which comprises a two-stage drying and tempering treatment of the hollow fiber membranes. According to a further aspect, the invention relates to a continuous process for drying permselective hollow fiber membranes on-line. The invention also relates to devices for on-line drying of permselective hollow fiber membranes.
    Type: Application
    Filed: December 21, 2015
    Publication date: December 28, 2017
    Inventors: Ulrich BAUER, Reinhold BUCK, Juergen GRAF, Helmut HILDWEIN, Bernd KRAUSE, Markus STORR, Arnd WOCHNER
  • Patent number: 9802162
    Abstract: An end cap for a pressure vessel has at least one part for connecting the end cap to a housing. The at least one part comprises a number of recesses. The recesses are arranged to form at least one fluid passage between an inside and an outside of the end cap when the end cap is plugged on the housing. A housing for a pressure vessel has at least one counterpart for connecting an end cap to the housing by engaging a part of the end cap. The at least one counterpart comprises a number of recesses. The recesses are arranged to form at least one fluid passage between an inside and an outside of the housing when the end cap is plugged on the housing. A method for leak testing a pressure vessel and a method for checking a connection between at least one end cap and a housing of a pressure vessel for leak tightness are also described.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: October 31, 2017
    Assignee: Gambro Lundia AB
    Inventors: Helmut Hildwein, Peter Wiegers, Franz Brohm
  • Publication number: 20160129172
    Abstract: The present disclosure relates to capillary dialyzers for blood purification comprising from 85-95% crimped fibres and from 5-15% non-crimped fibres.
    Type: Application
    Filed: June 19, 2014
    Publication date: May 12, 2016
    Inventors: Markus HORNUNG, Arnd WOCHNER, Reinhold BUCK, Helmut HILDWEIN, Nikolaus KANARJOW
  • Patent number: 8771215
    Abstract: A machine (1) for extracorporeal blood treatment comprises a device (2) for ultrafiltration of a liquid through a semi-permeable membrane (3) of a blood treatment device (4), a first sensor (11) for ultrafiltration rate through the membrane, a second group of sensors (13) for measuring a trans-membrane pressure, an infusion line (16) with an infusion pump (17) and a programmed controller (14) for calculating a maximum infusion rate as a function of the transmembrane pressure. The machine is suitable for kidney failure treatments, such as hemofiltration and hemodiafiltration. In a relatively short time the machine enables a large quantity of corporeal blood to be removed from the patient.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: July 8, 2014
    Assignee: Cambro Lundia AB
    Inventors: Claudio Tonelli, Bernd Wittner, Werner Beck, Helmut Hildwein, Reinhold Deppisch, Jonas Svensson, Bjorn Ericson
  • Publication number: 20120095381
    Abstract: A machine (1) for extracorporeal blood treatment comprises a device (2) for ultrafiltration of a liquid through a semi-permeable membrane (3) of a blood treatment device (4), a first sensor (11) for ultrafiltration rate through the membrane, a second group of sensors (13) for measuring a trans-membrane pressure, an infusion line (16) with an infusion pump (17) and a programmed controller (14) for calculating a maximum infusion rate as a function of the transmembrane pressure. The machine is suitable for kidney failure treatments, such as hemofiltration and hemodiafiltration. In a relatively short time the machine enables a large quantity of corporeal blood to be removed from the patient.
    Type: Application
    Filed: December 20, 2011
    Publication date: April 19, 2012
    Applicant: GAMBRO LUNDIA AB
    Inventors: Claudio TONELLI, Bernd WITTNER, Werner BECK, Helmut HILDWEIN, Reinhold DEPPISCH, Jonas SVENSSON, Bjorn ERICSON
  • Patent number: 8105260
    Abstract: A machine (1) for extracorporeal blood treatment comprises a device (2) for ultrafiltration of a liquid through a semi-permeable membrane (3) of a blood treatment device (4), a first sensor (11) for ultrafiltration rate through the membrane, a second group of sensors (13) for measuring a trans-membrane pressure, and a programmed controller (14) for calculating a maximum ultrafiltration rate as a function of the transmembrane pressure. The machine is suitable for kidney failure treatments, such as hemofiltration and hemodiafiltration. In a relatively short time the machine enables a large quantity of corporeal blood to be removed from the patient.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: January 31, 2012
    Assignee: Gambro Lundia AB
    Inventors: Claudio Tonelli, Bernd Wittner, Werner Beck, Helmut Hildwein, Reinhold Deppisch, Jonas Svensson, Bjorn Ericson
  • Publication number: 20110233216
    Abstract: An end cap for a pressure vessel has at least one part for connecting the end cap to a housing. The at least one part comprises a number of recesses. The recesses are arranged to form at least one fluid passage between an inside and an outside of the end cap when the end cap is plugged on the housing. A housing for a pressure vessel has at least one counterpart for connecting an end cap to the housing by engaging a part of the end cap. The at least one counterpart comprises a number of recesses. The recesses are arranged to form at least one fluid passage between an inside and an outside of the housing when the end cap is plugged on the housing. A method for leak testing a pressure vessel and a method for checking a connection between at least one end cap and a housing of a pressure vessel for leak tightness are also described.
    Type: Application
    Filed: October 23, 2009
    Publication date: September 29, 2011
    Applicant: GAMBRO LUNDIA AB
    Inventors: Helmut Hildwein, Peter Wiegers, Franz Brohm
  • Patent number: 8025633
    Abstract: Arrangement for extracorporeal circulation of blood having a generally uniform flow diameter where the risk for stagnation of blood is avoided or reduced. The arrangement comprises a generally circular cylindrical means for temporary expanding the flow diameter, a means for flow expansion (9). The means for flow expansion (9) is arranged connecting the bloodline (5) and a component (6, 8) for circulation of the blood. The means for flow expansion (9) comprises a first part with a first flow diameter, d1 and a second part downstream the first part with a second flow diameter d2 where d2/d1?1.5. The first part has a length extension L1 and the second part has a length extension L2 where L2/L1?0.5.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: September 27, 2011
    Assignee: Gambro Lundia AB
    Inventors: Helmut Hildwein, Jens Schiele, Jutta Kiener
  • Publication number: 20090287134
    Abstract: Arrangement for extracorporeal circulation of blood having a generally uniform flow diameter where the risk for stagnation of blood is avoided or reduced. The arrangement comprises a generally circular cylindrical means for temporary expanding the flow diameter, a means for flow expansion (9). The means for flow expansion (9) is arranged connecting the bloodline (5) and a component (6, 8) for circulation of the blood. The means for flow expansion (9) comprises a first part with a first flow diameter, d1 and a second part downstream the first part with a second flow diameter d2 where d2/d1?1.5. The first part has a length extension L1 and the second part has a length extension L2 where L2/L1?0.5.
    Type: Application
    Filed: September 1, 2006
    Publication date: November 19, 2009
    Inventors: Helmut Hildwein, Jens Schiele, Jutta Kiener
  • Publication number: 20080215247
    Abstract: A machine (1) for extracorporeal blood treatment comprises a device (2) for ultrafiltration of a liquid through a semi-permeable membrane (3) of a blood treatment device (4), a first sensor (11) for ultrafiltration rate through the membrane, a second group of sensors (13) for measuring a trans-membrane pressure, and a programmed controller (14) for calculating a maximum ultrafiltration rate as a function of the transmembrane pressure. The machine is suitable for kidney failure treatments, such as hemofiltration and hemodiafiltration. In a relatively short time the machine enables a large quantity of corporeal blood to be removed from the patient.
    Type: Application
    Filed: May 27, 2005
    Publication date: September 4, 2008
    Inventors: Claudio Tonelli, Bernd Wittner, Werner Beck, Helmut Hildwein, Reinhold Deppisch, Jonas Svensson, Bjorn Ericson