Patents by Inventor Gerhard Breith
Gerhard Breith 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).
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Patent number: 8182686Abstract: A hollow fiber membrane separation device with two flow spaces, of which a first space is formed by the capillary tube passages of a hollow-fiber bundle cast at its ends into a sealing compound, and a second space is formed by a housing enclosing the fiber bundle. The first space is sealed off by caps, placed on the sealing compounds, with seals running over the peripheral areas of the sealing compounds. The housing, into which the hollow-fiber bundle is drawn, at each end of its casing has tooth-like or pinnacle-like projections formed by axial notches or indentations running out freely. The tooth-like or pinnacle-like projections have extensions extending from the sides of the projections and extending to the adjacent tooth-like or pinnacle-like projection.Type: GrantFiled: June 8, 2006Date of Patent: May 22, 2012Assignee: Fresenius Medical Care Deutschland GmbHInventors: Friedrich Witthaus, Gerhard Breith
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Patent number: 7713412Abstract: A hollow fiber filter device for dialysis having a housing and an end cap is described. The end cap is attached to an axial end of the housing, and has a curved channel in fluid communication with a fluid port, a fluid chamber having a flow path defined by a plurality of curved members connected to an upper interior surface. The distance between circumferentially adjacent curved members may decrease in a radially outward flow direction.Type: GrantFiled: May 9, 2008Date of Patent: May 11, 2010Assignee: Fresenius Medical Care Deutschland GmnHInventors: Klaus Heilmann, Gerhard Breith, Igor Raiko, Roland Sander, Steffen Fritzsche
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Publication number: 20090301961Abstract: The present invention refers to a hollow fiber membrane separation device with two flow spaces, of which a first space is formed by the capillary tube passages of a hollow-fiber bundle cast at its ends into a sealing compound, and a second space is formed by a housing enclosing the fiber bundle, wherein the first space is sealed off by caps, placed on the sealing compounds, with seals running over the peripheral areas of the sealing compounds, and wherein the housing, into which the hollow-fiber bundle is drawn, at each end of its casing has tooth-like or pinnacle-like projections formed by axial notches or indentations running out freely. According to the invention, the housing has, between the tooth-like or pinnacle-like projections, extensions extending from said projections and extending to the adjacent tooth-like or pinnacle-like projection.Type: ApplicationFiled: June 8, 2006Publication date: December 10, 2009Inventors: Friedrich Witthaus, Gerhard Breith
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Publication number: 20080230467Abstract: A filter device for mass exchange between two media separated by a membrane providing a low-stress transfer of blood flow from the connection area of the filter device to the fibers of a hollow fiber bundle is disclosed. Relatively uniform utilization of the fibers is provided by a membrane in the form of a hollow fiber bundle whose fiber cavities form a first flow space, with at least one inflow or outflow chamber connected to the first flow space being provided for supplying a medium to the hollow fiber bundle or removing a medium from the hollow fiber bundle. The inflow or outflow chamber is adjacent to an essentially circular or semicircular channel which is designed to be open in the direction of the ends of the hollow fibers and is connected to an inlet or outlet of the filter device.Type: ApplicationFiled: May 9, 2008Publication date: September 25, 2008Inventors: Klaus HEILMANN, Gerhard Breith, Igor Raiko, Roland Sander, Steffen Fritzsche
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Patent number: 6858137Abstract: A closure element for sterile closure of connections, in particular connections of filter modules for dialysis, hemofiltration or ultrafiltration is described. A closure element with a simple design that provides a reliable seal is formed by having the closure element include a wall with an automatically closing slit-shaped indentation which when closed creates a germ-proof seal. The sealing element is used for sterile closure of connections of medical items, as well as for the medical items themselves.Type: GrantFiled: January 18, 2002Date of Patent: February 22, 2005Assignee: Fresenius Medical Care Deutschland GmbHInventors: Uwe Hahmann, Christian Sauerwald, Klaus Heilmann, Gerhard Breith, Steffen Fritzsche
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Publication number: 20040089598Abstract: A filter device for mass exchange between two media separated by a membrane providing a low-stress transfer of blood flow from the connection area of the filter device to the fibers of a hollow fiber bundle is disclosed. Relatively uniform utilization of the fibers is provided by a membrane in the form of a hollow fiber bundle whose fiber cavities form a first flow space, with at least one inflow or outflow chamber connected to the first flow space being provided for supplying a medium to the hollow fiber bundle or removing a medium from the hollow fiber bundle. The inflow or outflow chamber is adjacent to an essentially circular or semicircular channel which is designed to be open in the direction of the ends of the hollow fibers and is connected to an inlet or outlet of the filter device.Type: ApplicationFiled: September 29, 2003Publication date: May 13, 2004Inventors: Klaus Heilmann, Gerhard Breith, Igor Raiko, Roland Sander, Steffen Fritzsche
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Patent number: 6641731Abstract: A filter device for mass exchange between two media separated by a membrane is disclosed. The device provides for low-stress transfer of blood flow from the connection area of the filter device to the fibers of a hollow fiber bundle. Relatively uniform utilization of the fibers is provided by a membrane in the form of a hollow fiber bundle whose fiber cavities form a first flow space. At least one inflow or outflow chamber is connected to the first flow space for supplying a medium to the hollow fiber bundle or removing a medium from the hollow fiber bundle. The inflow or outflow chamber is adjacent to an essentially circular or semicircular channel which is designed to be open in the direction of the ends of the hollow fibers and is connected to an inlet or outlet of the filter device. The channel is arranged approximately centrally with the hollow fiber bundle.Type: GrantFiled: December 15, 1999Date of Patent: November 4, 2003Assignee: Fresenius Medical Care DeutschlandInventors: Klaus Heilmann, Gerhard Breith, Igor Raiko, Roland Sander, Steffen Fritzsche
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Publication number: 20020104791Abstract: A closure element for sterile closure of connections, in particular connections of filter modules for dialysis, hemofiltration or ultrafiltration is described. A closure element with a simple design that provides a reliable seal is formed by having the closure element include a wall with an automatically closing slit-shaped indentation which when closed creates a germ-proof seal. The sealing element is used for sterile closure of connections of medical items, as well as for the medical items themselves.Type: ApplicationFiled: January 18, 2002Publication date: August 8, 2002Inventors: Uwe Hahmann, Christian Sauerwald, Klaus Heilmann, Gerhard Breith, Steffen Fritzsche
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Patent number: 6419825Abstract: A closure element for sterile closure of connections, in particular connections of filter modules for dialysis, hemofiltration or ultrafiltration is described. A closure element with a simple design that provides a reliable seal is formed by having the closure element include a wall with an automatically closing slit-shaped indentation which when closed creates a germ-proof seal. The sealing element is used for sterile closure of connections of medical items, as well as for the medical items themselves.Type: GrantFiled: November 15, 1999Date of Patent: July 16, 2002Assignee: Fresenius Medical Care Deutschland GmbHInventors: Uwe Hahmann, Christian Sauerwald, Klaus Heilmann, Gerhard Breith, Steffen Fritzsche, Igor Raiko