Patent Number: 6,168,780

Title: Marker for determining its position in a cavity inside the organism of a living being

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.

Inventors: Andra ; Wilfried (Jena, DE)

Assignee: Institut fuer Physikalische Hochtechnologie e.V.

International Classification: A61B 5/06 (20060101); A61B 5/07 (20060101); G01V 15/00 (20060101); A61B 005/055 ()

Expiration Date: 01/02/2018