Wireless system for epilepsy monitoring and measurement

• US 9,326,726 B2
• Filed: 05/16/2014
• Issued: 05/03/2016
• Est. Priority Date: 08/01/2007
• Status: Active Grant

• Current Assignee: ITN Energy Systems, Inc., Yale University
• Original Assignee: ITN Energy Systems, Inc., Yale University
• Inventors: Lanning, Bruce, Nolan, James A, Nuebel, Gregory J, Spencer, Dennis D, Zaveri, Hitten P
• Primary Examiner(s): Lavert, Nicole F
• Application Number:
  US14/279,882
• Publication Number:
  US 20140296732A1
• Time in Patent Office: 718 Days
• Field of Search: 607/33, 607/45, 600/518, 600/544
• US Class Current: 1/1
• CPC Class Codes: A61B 2560/045 with a separable interface unit, e.g. for communication
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61B 5/0017 transmitting optical signals transmission by light H04B10/00
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/291 for electroencephalography [EEG]
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/4094 Diagnosing or monitoring seizure diseases, e.g. epilepsy
• CPC Class Codes: A61B 5/6803 Head-worn items, e.g. helmets, masks, headphones or goggles
• CPC Class Codes: A61B 5/6814 Head

Abstract

A wireless system for brain monitoring/mapping of neurological-disorder patients includes a plurality of electrodes each configured for surface abutment of brain tissue and main circuitry for placement outside a body of a patient and configured to transmit power at radio frequencies and send and receive data using infrared energy. Remote circuitry is provided for subcutaneous implantation in a head of the patient. The remote circuitry is connected to the plurality of electrodes and includes a multiplexer sampling signals from the plurality of electrodes. The multiplexer outputs electrode signals to an amplifier and A/D converter for transmission to the main circuitry. The remote circuitry is configured to (a) receive transmitted power at radio frequencies from the main circuitry, (b) capture and digitize full-bandwidth EEG signals from each of the electrodes, and (c) send data to and receive data from the main circuitry using infrared energy.

Claims

1. A digital EEG system for signal processing circuitry for brain monitoring/mapping of neurological-disorder patients, comprising:

a plurality of scalp electrodes;

signal processing circuitry connected to the plurality of scalp electrodes, the signal processing circuitry including;

a multiplexer sampling signals from the plurality of scalp electrodes, the multiplexer outputting electrode signals;

an amplifier amplifying electrode signals from the plurality of scalp electrodes; and

an A/D converter converting the electrode signals to digital for transmission to an EEG recording device.

2. The digital EEG system of claim 1 wherein the multiplexer include an array of series L and shunt capacitors at each channel input.

3. The digital EEG system of claim 1 wherein the multiplexer includes a low pass filter at each channel input.