Patents by Inventor Holger Rahn

Holger Rahn 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: 9011765
    Abstract: A method and an arrangement for sterilizing, in particular for sterilizing an adsorber, which has an adsorber housing that is to be filled with an adsorbent, are such that, instead of the adsorbent-filled adsorber housing being sterilized, the adsorbent is sterilized in a separate container, which is dimensioned such that the adsorbent spreads out in a thin layer in the container. Together with the adsorber housing, the container for sterilizing the adsorbent forms a closed system, such that the adsorbent can be transferred into the adsorber housing without the need for an aseptic environment. The container for receiving the adsorbent is preferably a bag, in which the adsorbent spreads out in a thin layer when the bag is lying flat on a plane surface. Since the adsorbent in the bag spreads out in a thin layer, the sterilization requires only a relatively small dose of radiation, which cannot damage the adsorbent. The bag is irradiated with high-energy radiation, in particular ionizing radiation.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: April 21, 2015
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Holger Rahn, Hans-Peter Leinenbach, Stefan Kuhn, Franz-Josef Gerner
  • Publication number: 20110262300
    Abstract: A method and an arrangement for sterilizing, in particular for sterilizing an adsorber, which has an adsorber housing that is to be filled with an adsorbent, are such that, instead of the adsorbent-filled adsorber housing being sterilized, the adsorbent is sterilized in a separate container, which is dimensioned such that the adsorbent spreads out in a thin layer in the container. Together with the adsorber housing, the container for sterilizing the adsorbent forms a closed system, such that the adsorbent can be transferred into the adsorber housing without the need for an aseptic environment. The container for receiving the adsorbent is preferably a bag, in which the adsorbent spreads out in a thin layer when the bag is lying flat on a plane surface. Since the adsorbent in the bag spreads out in a thin layer, the sterilization requires only a relatively small dose of radiation, which cannot damage the adsorbent. The bag is irradiated with high-energy radiation, in particular ionizing radiation.
    Type: Application
    Filed: October 22, 2009
    Publication date: October 27, 2011
    Inventors: Holger Rahn, Hans-Peter Leinenbach, Stefan Kuhn, Franz-Josep Gerner