Surgery – Diagnostic testing – Detecting brain electric signal
Reexamination Certificate
2003-07-11
2008-05-13
Nasser, Jr., Robert L. (Department: 3735)
Surgery
Diagnostic testing
Detecting brain electric signal
C600S545000
Reexamination Certificate
active
07373198
ABSTRACT:
A method and apparatus to monitor the neurologic state of a patient undergoing general anesthesia is provided. Previous automated systems to monitor the neurologic state of a patient undergoing general anesthesia involve a significant time delay between the patient's true hypnotic state and the computed indices. The present invention reduces this time delay by using a different analysis technique applied to spontaneous EEG. A wavelet decomposition and statistical analysis of the observed EEG is conducted and compared to reference data to provide a numerical indicator. In addition, this indicator is more consistent with the patient's loss of consciousness indicated by the loss of count event than previous systems.
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Ahmadi Hossain Cyrus
Bibian Stéphane
Dumont Guy Albert
Huzmezan Mihai
Macleod Bernard Ansell
Bionova Technologies Inc.
Nasser Jr. Robert L.
Oyen Wiggs Green & Mutala LLP
Toth Karen E
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