Patents by Inventor Uwe Hahmann
Uwe Hahmann 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: 10471194Abstract: A dialysis machine that includes a valve member having a deformable area configured to deform outwardly away when pressurized fluid is introduced into the valve member. The valve member is configured so that, when a dialysis fluid cassette is disposed in a cassette compartment of the dialysis machine and pressurized fluid is introduced into the valve member, the deformable area obstructs a fluid channel of the dialysis fluid cassette to control dialysis fluid flow therethrough.Type: GrantFiled: November 7, 2017Date of Patent: November 12, 2019Assignee: Fresenius Medical Care Deutschland GmbHInventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
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Publication number: 20180117229Abstract: A dialysis machine that includes a valve member having a deformable area configured to deform outwardly away when pressurized fluid is introduced into the valve member. The valve member is configured so that, when a dialysis fluid cassette is disposed in a cassette compartment of the dialysis machine and pressurized fluid is introduced into the valve member, the deformable area obstructs a fluid channel of the dialysis fluid cassette to control dialysis fluid flow therethrough.Type: ApplicationFiled: November 7, 2017Publication date: May 3, 2018Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
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Patent number: 9101709Abstract: A dialysis fluid cassette that includes a base and a flexible membrane attached to the base. The flexible membrane and the base cooperate to at least partially define a venting chamber and a fluid channel fluidly connected to the venting chamber.Type: GrantFiled: January 4, 2013Date of Patent: August 11, 2015Assignee: Fresenius Medical Care Deutschland GmbHInventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis
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Patent number: 8435408Abstract: The invention relates to an apparatus for the treatment of a medical liquid comprising a liquid treatment machine and a cassette insertable therein substantially made of a rigid base body of the cassette with fitted chambers and passages and a foil covering them.Type: GrantFiled: February 21, 2012Date of Patent: May 7, 2013Assignee: Fresenius Medical Care Deutschland GmbHInventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
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Patent number: 8377293Abstract: A dialysis fluid cassette that includes a base and a flexible membrane attached to the base. The flexible membrane and the base cooperate to at least partially define a venting chamber and a fluid channel fluidly connected to the venting chamber.Type: GrantFiled: September 20, 2011Date of Patent: February 19, 2013Assignee: Fresenius Medical Care Deutschland GmbHInventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis
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Publication number: 20120156097Abstract: The invention relates to an apparatus for the treatment of a medical liquid comprising a liquid treatment machine and a cassette insertable therein substantially made of a rigid base body of the cassette with fitted chambers and passages and a foil covering them.Type: ApplicationFiled: February 21, 2012Publication date: June 21, 2012Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBHInventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
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Patent number: 8142653Abstract: The invention relates to an apparatus for the treatment of a medical liquid comprising a liquid treatment machine and a cassette insertable therein substantially made of a rigid base body of the cassette with fitted chambers and passages and a foil covering them.Type: GrantFiled: November 30, 2009Date of Patent: March 27, 2012Assignee: Fresenius Medical Care Deutschland GmbHInventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
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Publication number: 20120061310Abstract: A dialysis fluid cassette that includes a base and a flexible membrane attached to the base. The flexible membrane and the base cooperate to at least partially define a venting chamber and a fluid channel fluidly connected to the venting chamber.Type: ApplicationFiled: September 20, 2011Publication date: March 15, 2012Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBHInventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis
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Publication number: 20100133153Abstract: The invention relates to an apparatus for the treatment of a medical liquid comprising a liquid treatment machine and a cassette insertable therein substantially made of a rigid base body of the cassette with fitted chambers and passages and a foil covering them.Type: ApplicationFiled: November 30, 2009Publication date: June 3, 2010Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
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Patent number: 7648627Abstract: An apparatus for the treatment of a medical liquid has a liquid treatment machine and a cassette that is insertable in the machine. The cassette has a rigid base body with fitted chambers and passages and a foil that covers the chambers and passages. Actuators and sensors are arranged in the liquid treatment machine for the operation of the apparatus with the inserted cassette such that cassettes are insertable in different integration shapes.Type: GrantFiled: May 22, 2003Date of Patent: January 19, 2010Assignee: Fresenius Medical Care Deutschland GmbHInventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
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Publication number: 20090050556Abstract: A filter device having two flow paths. The first flow path having at least one cap and fluid port. The second flow path surrounding the first fluid flow path and having at least one cap that overlaps the cap of the first fluid flow path. The second flow path also having at least one fluid port. The filter device providing a simple arrangement that is easily disinfected or sterilized.Type: ApplicationFiled: August 21, 2008Publication date: February 26, 2009Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schonhofen, Gerhard Wiesen
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Patent number: 7217364Abstract: A filter device has a housing in the shape of a tubular section, with at least two chambers separated from one another by membranes, and with at least one connection for each flow chamber. The device has two filter caps, with one of each of the filter caps being located on each of the two end regions of the housing, and connected directly or indirectly thereto. All connections for the flow chambers are positioned on the tubular section in order to avoid tolerance variations that frequently occur during installation of the filter device.Type: GrantFiled: July 26, 2002Date of Patent: May 15, 2007Assignee: Fresenius Medical Care Deutschland GmbHInventors: Martin Lauer, Uwe Hahmann, Gerhard Wiesen
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Publication number: 20070062871Abstract: A filter device having two flow paths. The first flow path having at least one cap and fluid port. The second flow path surrounding the first fluid flow path and having at least one cap that overlaps the cap of the first fluid flow path. The second flow path also having at least one fluid port. The filter device providing a simple arrangement that is easily disinfected or sterilized.Type: ApplicationFiled: November 22, 2006Publication date: March 22, 2007Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schonhofen, Gerhard Wiesen
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Publication number: 20060096907Abstract: A filter device having two flow paths. The first flow path having at least one cap and fluid port. The second flow path surrounding the first fluid flow path and having at least one cap that overlaps the cap of the first fluid flow path. The second flow path also having at least one fluid port. The filter device providing a simple arrangement that is easily disinfected or sterilized.Type: ApplicationFiled: December 20, 2005Publication date: May 11, 2006Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schonhofen, Gerhard Wiesen
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Publication number: 20050230292Abstract: The invention relates to an apparatus for the treatment of a medical liquid comprising a liquid treatment machine and a cassette insertable therein substantially made of a rigid base body of the cassette with fitted chambers and passages and a foil covering them. In accordance with the invention, actuators and sensors are arranged in the liquid treatment machine for the operation of the apparatus with the inserted cassette such that cassettes are insertable in different integration shapes.Type: ApplicationFiled: May 22, 2003Publication date: October 20, 2005Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
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Publication number: 20050056584Abstract: A filter device having two flow paths. The first flow path having at least one cap and fluid port. The second flow path surrounding the first fluid flow path and having at least one cap that overlaps the cap of the first fluid flow path. The second flow path also having at least one fluid port. The filter device providing a simple arrangement that is easily disinfected or sterilized.Type: ApplicationFiled: October 28, 2004Publication date: March 17, 2005Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schonhofen, Gerhard Wiesen
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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: 20040262212Abstract: The present invention relates to a filter device having a housing, having at least two flow chambers separated from one another by membranes, having at least one connection for each flow chamber, and having at least one filter cap which is put on in the end region of the housing and is connected directly or indirectly thereto. Tolerance variations which frequently occur during the installation of the filter device are avoided according to the present invention in that all connections for the flow chambers are positioned on the housing. The present invention also relates to a housing of a filter device having at least two flow chambers separated from one another by membranes and having at least one end region which is connected to one of the flow chambers and is closable by a filter cap which may be put on the housing. Each of the flow chambers has at least one connection and all connections for the flow chambers are positioned on the housing.Type: ApplicationFiled: March 29, 2004Publication date: December 30, 2004Inventors: Martin Lauer, Uwe Hahmann, Gerhard Wiesen
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Publication number: 20040206704Abstract: A filter device having two flow paths. The first flow path having at least one cap and fluid port. The second flow path surrounding the first fluid flow path and having at least one cap that overlaps the cap of the first fluid flow path. The second flow path also having at least one fluid port. The filter device providing a simple arrangement that is easily disinfected or sterilized.Type: ApplicationFiled: April 27, 2004Publication date: October 21, 2004Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schonhofen, Gerhard Wiesen
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Patent number: 6776909Abstract: A filter device has two flow paths. The first flow path having at least one cap and fluid port. The second flow path surrounding the first fluid flow path and having at least one cap that overlaps the cap of the first fluid flow path. The second flow path also having at least one fluid port. The filter device providing a simple arrangement that is easily disinfected or sterilized.Type: GrantFiled: June 12, 2002Date of Patent: August 17, 2004Assignee: Fresenius Medical Care Deutschland GmbHInventors: Uwe Hahmann, Klaus Heilmann, Michael Schönhofen, Gerhard Wiesen