Patents by Inventor Börje Tor Rantala

Börje Tor Rantala 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).

  • Remote sensing tonometric catheter apparatus and method
    Patent number: 6238339
    Abstract: An improved remote sensing tonometric catheter apparatus (20) and method for sampling of a fluid or gas property of interest in a hollow internal organ. The tonometric catheter (20) assists in early detection of the problems of stress ulceration and/or intestinal ischemia. The tonometric catheter (20) can be one or more sampling chambers (40) for introduction into an internal organ or area adjacent thereto. Preferably, the wall (36) of the sampling chamber (40) is freely permeable to the gas or fluid to be measured by the sensor (42), but is poorly permeable to other gases or fluids which may interfere with the sensor (42).
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: May 29, 2001
    Assignee: Instrumentarium Corp.
    Inventors: Richard G. Fiddian-Greene, Bo Holte, Joel C. Kent, Börje Tor Rantala