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).

  • Patent number: 10471194
    Abstract: 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: Grant
    Filed: November 7, 2017
    Date of Patent: November 12, 2019
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
  • Publication number: 20180117229
    Abstract: 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: Application
    Filed: November 7, 2017
    Publication date: May 3, 2018
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
  • Patent number: 9101709
    Abstract: 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: Grant
    Filed: January 4, 2013
    Date of Patent: August 11, 2015
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis
  • Patent number: 8435408
    Abstract: 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: Grant
    Filed: February 21, 2012
    Date of Patent: May 7, 2013
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
  • Patent number: 8377293
    Abstract: 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: Grant
    Filed: September 20, 2011
    Date of Patent: February 19, 2013
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis
  • Publication number: 20120156097
    Abstract: 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: Application
    Filed: February 21, 2012
    Publication date: June 21, 2012
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
  • Patent number: 8142653
    Abstract: 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: Grant
    Filed: November 30, 2009
    Date of Patent: March 27, 2012
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
  • Publication number: 20120061310
    Abstract: 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: Application
    Filed: September 20, 2011
    Publication date: March 15, 2012
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis
  • Publication number: 20100133153
    Abstract: 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: Application
    Filed: November 30, 2009
    Publication date: June 3, 2010
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
  • Patent number: 7648627
    Abstract: 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: Grant
    Filed: May 22, 2003
    Date of Patent: January 19, 2010
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
  • Publication number: 20090050556
    Abstract: 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: Application
    Filed: August 21, 2008
    Publication date: February 26, 2009
    Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schonhofen, Gerhard Wiesen
  • Patent number: 7217364
    Abstract: 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: Grant
    Filed: July 26, 2002
    Date of Patent: May 15, 2007
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Martin Lauer, Uwe Hahmann, Gerhard Wiesen
  • Publication number: 20070062871
    Abstract: 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: Application
    Filed: November 22, 2006
    Publication date: March 22, 2007
    Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schonhofen, Gerhard Wiesen
  • Publication number: 20060096907
    Abstract: 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: Application
    Filed: December 20, 2005
    Publication date: May 11, 2006
    Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schonhofen, Gerhard Wiesen
  • Publication number: 20050230292
    Abstract: 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: Application
    Filed: May 22, 2003
    Publication date: October 20, 2005
    Inventors: Josef Beden, Uwe Hahmann, Martin Herklotz, Martin Lauer, Joachim Manke, Peter Scheunert, Manfred Weis, Alexander Bongers
  • Publication number: 20050056584
    Abstract: 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: Application
    Filed: October 28, 2004
    Publication date: March 17, 2005
    Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schonhofen, Gerhard Wiesen
  • Patent number: 6858137
    Abstract: 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: Grant
    Filed: January 18, 2002
    Date of Patent: February 22, 2005
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Uwe Hahmann, Christian Sauerwald, Klaus Heilmann, Gerhard Breith, Steffen Fritzsche
  • Publication number: 20040262212
    Abstract: 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: Application
    Filed: March 29, 2004
    Publication date: December 30, 2004
    Inventors: Martin Lauer, Uwe Hahmann, Gerhard Wiesen
  • Publication number: 20040206704
    Abstract: 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: Application
    Filed: April 27, 2004
    Publication date: October 21, 2004
    Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schonhofen, Gerhard Wiesen
  • Patent number: 6776909
    Abstract: 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: Grant
    Filed: June 12, 2002
    Date of Patent: August 17, 2004
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Uwe Hahmann, Klaus Heilmann, Michael Schönhofen, Gerhard Wiesen