Integrity verification system for testing high channel count neuromonitoring recording equipment

Inventors

Rhodes, Ethan • Villarreal, Richard A. • Cadwell, John A. • Rehfeldt, Rose

Assignees

Cadwell Laboratories Inc

Abstract

Methods of performing diagnostic tests on electroencephalography (EEG) recording devices comprising at least one stimulator coupled with a plurality of EEG electrode recording channels and corresponding recording channel connectors are performed by a test fixture comprising a plurality of resistors coupled with one or more of the EEG electrode recording channels and corresponding recording channel connectors. The methods include performing an impedance test for determining if each EEG recording channel of the EEG recording device has a predefined impedance, performing a channel uniqueness test for each EEG recording channel, performing a test for verifying the state of a switch of the stimulator of the EEG recording device, and performing a test for verifying connector IDs of the recording channel connectors connecting the EEG electrodes to respective EEG recording channels.

Core Innovation

The invention describes an integrity verification system for an electroencephalography (EEG) recording device used with high channel count electrode recording channels and recording channel connectors. The diagnostic test is performed by a hardware testing device that includes a plurality of resistors coupled with one or more of the EEG recording channels and corresponding recording channel connectors.

The method performs an impedance test to determine if each EEG recording channel has a predefined impedance. The method further performs a channel uniqueness test to evaluate lead-off functionality using electrode-connected status and electrode-disconnected status.

The invention also includes verifying a state of a switch of at least one stimulator of the EEG recording device, and performing a test to verify correct functionality for each of the electrode connections. Electrode connection functionality includes tests involving connector identification circuitry and detecting connector identification on predefined channel groups.

Claims Coverage

The independent claim describes a diagnostic testing method for an EEG recording device using a hardware testing device with a resistor network, covering four main inventive test categories. The provided material identifies independent claim 1 as the only explicit independent claim.

The inventive coverage centers on using a hardware testing device with a resistor network to run impedance testing, channel uniqueness testing, stimulator switch state verification, and electrode connection functionality testing for an EEG recording device.

Stated Advantages

Documented Applications