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: 20220023803Abstract: 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: ApplicationFiled: September 24, 2021Publication date: January 27, 2022Inventors: Ulrich BAUER, Reinhold BUCK, Juergen GRAF, Helmut HILDWEIN, Bernd KRAUSE, Markus STORR, Arnd WOCHNER
-
Patent number: 11154820Abstract: 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: GrantFiled: December 21, 2015Date of Patent: October 26, 2021Assignee: GAMBRO LUNDIA ABInventors: Ulrich Bauer, Reinhold Buck, Juergen Graf, Helmut Hildwein, Bernd Krause, Markus Storr, Arnd Wochner
-
Patent number: 10022481Abstract: The present disclosure relates to capillary dialyzers for blood purification comprising from 85-95% crimped fibers and from 5-15% non-crimped fibers.Type: GrantFiled: June 19, 2014Date of Patent: July 17, 2018Assignee: GAMBRO LUNDIA ABInventors: Markus Hornung, Arnd Wochner, Reinhold Buck, Helmut Hildwein, Nikolaus Kanarjow
-
Publication number: 20170368507Abstract: 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: ApplicationFiled: December 21, 2015Publication date: December 28, 2017Inventors: Ulrich BAUER, Reinhold BUCK, Juergen GRAF, Helmut HILDWEIN, Bernd KRAUSE, Markus STORR, Arnd WOCHNER
-
Patent number: 9802162Abstract: 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: GrantFiled: October 23, 2009Date of Patent: October 31, 2017Assignee: Gambro Lundia ABInventors: Helmut Hildwein, Peter Wiegers, Franz Brohm
-
Publication number: 20160129172Abstract: The present disclosure relates to capillary dialyzers for blood purification comprising from 85-95% crimped fibres and from 5-15% non-crimped fibres.Type: ApplicationFiled: June 19, 2014Publication date: May 12, 2016Inventors: Markus HORNUNG, Arnd WOCHNER, Reinhold BUCK, Helmut HILDWEIN, Nikolaus KANARJOW
-
Patent number: 8771215Abstract: 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: GrantFiled: December 20, 2011Date of Patent: July 8, 2014Assignee: Cambro Lundia ABInventors: Claudio Tonelli, Bernd Wittner, Werner Beck, Helmut Hildwein, Reinhold Deppisch, Jonas Svensson, Bjorn Ericson
-
Publication number: 20120095381Abstract: 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: ApplicationFiled: December 20, 2011Publication date: April 19, 2012Applicant: GAMBRO LUNDIA ABInventors: Claudio TONELLI, Bernd WITTNER, Werner BECK, Helmut HILDWEIN, Reinhold DEPPISCH, Jonas SVENSSON, Bjorn ERICSON
-
Patent number: 8105260Abstract: 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: GrantFiled: May 27, 2005Date of Patent: January 31, 2012Assignee: Gambro Lundia ABInventors: Claudio Tonelli, Bernd Wittner, Werner Beck, Helmut Hildwein, Reinhold Deppisch, Jonas Svensson, Bjorn Ericson
-
Publication number: 20110233216Abstract: 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: ApplicationFiled: October 23, 2009Publication date: September 29, 2011Applicant: GAMBRO LUNDIA ABInventors: Helmut Hildwein, Peter Wiegers, Franz Brohm
-
Patent number: 8025633Abstract: 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: GrantFiled: September 1, 2006Date of Patent: September 27, 2011Assignee: Gambro Lundia ABInventors: Helmut Hildwein, Jens Schiele, Jutta Kiener
-
Publication number: 20090287134Abstract: 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: ApplicationFiled: September 1, 2006Publication date: November 19, 2009Inventors: Helmut Hildwein, Jens Schiele, Jutta Kiener
-
Publication number: 20080215247Abstract: 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: ApplicationFiled: May 27, 2005Publication date: September 4, 2008Inventors: Claudio Tonelli, Bernd Wittner, Werner Beck, Helmut Hildwein, Reinhold Deppisch, Jonas Svensson, Bjorn Ericson