Monitoring and control for a laryngeal mask airway device
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United States of America Patent
Stats
-
Sep 25, 2007
Grant Date -
Jun 5, 2003
app pub date -
Jan 2, 2003
filing date -
Dec 24, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A reversibly operable motor is mechanically connected to automatically position the piston of an air syringe that is pneumatically connected to the inflatable/deflatable seal ring or cuff of a laryngeal mask airway device (LMA) that is installed in a patient, who is being ventilated and/or anaesthetized via the airway of the LMA device. Air pressure in the cuff corrected as necessary to conform to a predetermined pressure level. The system continuously monitors for abnormal patterns of response, with audibly and visually reported warnings to the anaesthetist; these warnings include system detection of a patient's incipient sign of premature awareness while still under surgery, system detection and warning of a system or LMA malfunction, and continual microprocessor survey and integration of historical data to determine decremental recovery from administered anaesthesia.
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