Remote sensing tonometric catheter apparatus and method
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United States of America Patent
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Oct 10, 1995
Issued Date -
N/A
app pub date -
Oct 12, 1994
filing date -
Aug 26, 1988
priority date (Note) -
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Abstract
A tonometric device for use in hollow viscus tonometry and remote sensing of patient fluid parameters is disclosed in combination with a secondary apparatus, such as a urinary catheter, a nasogastric sump apparatus, or a feeding tube, for example. The device is capable of monitoring certain critical fluid properties of interest, such as oxygen gases and carbon dioxide gases in the wall tissue itself of the patient's organ, rather than monitoring such properties in a lumen of the organ. A walled sampling chamber, which is preferably an inflated balloon member, is provided on an elongated tube, with provisions for positioning the sampling chamber in direct contact with a wall portion of the patient's internal organ.
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