Patents by Inventor Wilfried Andr{umlaut over (a)}

Wilfried Andr{umlaut over (a)} 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).

  • Marker for determining its position in a cavity inside the organism of a living being
    Patent number: 6168780
    Abstract: The invention provides a marker whose position in a cavity inside of a living organism can be determined, in particular for detecting local passage speeds of the marker through the gastro-intestinal tract, preferably in the small intestinal tract. The object of the invention is to provide a marker whose magnetization can be reversed with relatively low field intensities. To that end, the marker consists of a first substantially spherical part which contains a magnetizable material and is surrounded on all sides by a second part which is provided with a substantially spherical receptacle adapted to the surface shape of the first part, the receptacle being filled with a low-viscosity fluid.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: January 2, 2001
    Assignees: Institut fuer Physikalische Hochtechnologie e.V., Aesculap Meditec GmbH
    Inventor: Wilfried Andr{umlaut over (a)}