Depth of consciousness monitor

• US 10,542,903 B2
• Filed: 06/06/2013
• Issued: 01/28/2020
• Est. Priority Date: 06/07/2012
• Status: Active Grant

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: Al-Ali, Ammar, Weber, Walter M., Kashif, Faisal, Usman, Mohammad, Chandrasekaran, Balaji
• Primary Examiner(s): Neal, Timothy J
• Assistant Examiner(s): Woo, Jae
• Application Number:
  US13/911,939
• Publication Number:
  US 20130331660A1
• Time in Patent Office: 2,427 Days
• Field of Search: 600544, 12820423
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/389 Electromyography [EMG]
• CPC Class Codes: A61B 5/4821 Determining level or depth of anaesthesia A61B5/1106 takes precedence
• CPC Class Codes: A61B 5/4839 combined with drug delivery
• CPC Class Codes: A61M 2205/35 Communication
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2230/04 Heartbeat characteristics, e.g. ECG, blood pressure modulation
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00

Abstract

The present disclosure relates to physiological monitoring to determine the depth of consciousness of a patient under sedation. The monitor includes an EEG sensor and a depth of consciousness monitor. The depth of consciousness monitor can utilize treatment data, such as patient data and/or drug profile information with an EEG signal to determine whether the patient is adequately sedated.

Claims

1. A depth of consciousness monitor configured to determine a level of sedation of a medical patient, the depth of consciousness monitor comprising:

an EEG interface located within the depth of consciousness monitor and configured to receive an EEG signal from an EEG sensor;

an EEG front end configured to pre-process the EEG signal;

a processor, configured to determine a level of sedation of a medical patient based at least upon the pre-processed EEG signal, wherein the processor is further configured to determine delay information using a time the EEG signal is received by the EEG interface and a time the level of sedation is determined by the processor; and

a drug delivery device interface, configured to provide the level of sedation and the delay information to a drug delivery device.

2. The depth of consciousness monitor of claim 1, further comprising a multi-parameter monitor interface configured to receive power from a multi-parameter monitor and provide to the multi-parameter monitor one or more of:

(a) one or more physiological signals determined by the processor, (b) the level of sedation, or (c) the delay information.

3. The depth of consciousness monitor of claim 1, wherein the EEG front end comprises an EEG engine and an EMG engine configured to extract EEG information and EMG information from the EEG signal, respectively.

4. The depth of consciousness monitor of claim 1, wherein processor is further configured to time stamp the EEG signal when received from the EEG sensor.

5. The depth of consciousness monitor of claim 1, further comprising an additional sensor front end.

6. The depth of consciousness monitor of claim 5, wherein the additional sensor front end comprises an SpO2 sensor front end.

7. The depth of consciousness monitor of claim 1, further comprising a data port configured to receive at least one of patient data and drug profile information.

8. The depth of consciousness monitor of claim 7, wherein the processor is configured to determine a level of sedation of a medical patient based at least upon the pre-processed EEG signal and the at least one of patient data and drug profile information.

9. A depth of consciousness monitoring system comprising the depth of consciousness monitor of claim 1 and the EEG sensor.

10. A depth of consciousness monitoring system comprising the depth of consciousness monitor of claim 1 and the drug delivery system.

11. The depth of consciousness monitor of claim 1, wherein the drug delivery device interface comprises a wireless communication device.