Instrumentarium Corporation

Joel C Kent

Bo Holte

Richard G Fiddian-Greene

B&ouml;rje Tor Rantala

An improved remote sensing tonometric catheter apparatus (,) and method for sampling of a fluid or gas property of interest in a hollow internal organ. The tonometric catheter (,) assists in early detection of the problems of stress ulceration and/or intestinal ischemia. The tonometric catheter (,) can be one or more sampling chambers (,) for introduction into an internal organ or area adjacent thereto. Preferably, the wall (,) of the sampling chamber (,) is freely permeable to the gas or fluid to be measured by the sensor (,), but is poorly permeable to other gases or fluids which may interfere with the sensor (,).

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Needham, MA, United States of America

Joel C Kent