Patient monitoring equipment, probe for use therewith, and method of measuring anesthesia based on oesophagal contractions
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United States of America Patent
Stats
-
Mar 5, 1985
Grant Date -
N/A
app pub date -
Oct 23, 1981
filing date -
Oct 28, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of monitoring the depth of anaesthesia of a patient, comprising stimulating contractions in the oesophagus of the patient, for example using an inflatable oesophageal balloon, obtaining signals indicative of the oesophageal contractions using a sensor, and deriving from the signals an output indicative of the rate of occurrence of signals having a magnitude greater than a preset threshold value, and apparatus for carrying out the method. An alternative aspect comprises assigning a score value to each of a plurality of different bodily functions of a patient, for example heart rate, blood pressure, degree of sweating, and formation of tears, the said score values being indicative of a depth of anaesthesia or sedation, summing the score values, and producing an output from the summed score values indicative of the amount of anaesthetic to be fed to the patient.
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- Non-US Classification not provided for expired patents
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