Emergency Use EEG

Michael HoganJon McHale

Problem Statement◦ Develop a handheld device, that with minimal

specialized training, can be used to quickly record EEG signals in the field.

Recap

Handheld device with two Ag/AgCl cup electrodes with pins to penetrate hair

“D” clip electrode leads

Current Prototype

Procedure Storyboard

Patient has a medical

emergency

First responder determines if they are able to undergo a field

EEG

YES

Once the patient arrives at the

hospital, the data is transferred to the

diagnosing physician

Patient is taken to

hospital for care

Field EEG is performed on the

patient for all available reading

locations

NO

Quickly record accurate EEG signals Require limited training and experience to

operate Store signal results for later analysis Record placement of each individual

recording Visual feedback for a good connection Pivoting electrode housings

Design Requirements

Design Verification Strategy

Next Step to test electrodes in the handle assembly.

Tested Electrodes and leads on the Gtec biosignal acquisition system and Texas Instrument Performance Demonstrator

Recorded 4 wave forms:◦ Eyes open◦ Eyes closed (Alpha)◦ Eye blinks◦ Jaw clench

Electrode Connection Testing

Eyes Open

Eyes Closed

Electrode Connection Testing

Eye blink

Jaw Clench

Electrode Connection Testing

Jan 7th- Have plan and parts ordered for pivoting Electrodes

Jan 14th- Finalize plan for marking EEG recording location

February 1st- Have final prototype built (ideally with signal amplification built in to the handle)

February 15th-Complete any necessary Testing

February 28th- Finalize any open paperwork

Schedule