Subcutaneous EEG device
36 months EEG data with
UNEEG SubQ chip
A paradigm shift in epilepsy management
The minimally invasive UNEEG SubQ is the implantable part of our EEG monitoring solution. It is placed under the skin and compares in quality to scalp EEG.
The UNEEG SubQ chip measures the patients’ EEG and communicates with the an external recorder, which receives and stores the recorded EEG. The device is designed to stay implanted for up to 36 months.
The device consists of a ceramic housing and a lead with three electrodes (two active and one reference), and provides two-channel measurements from a single location.
Compares with scalp EEG quality
Minimally invasive
36 months EEG monitoring
The device housing is placed subcutaneously behind the patient’s left or right ear. The electrodes may be positioned in various directions to accommodate the relevant clinical question, ranging from the temporal to the occipital lobe.
The device is inserted under local anaesthesia in 15-30 minutes.
Various position possibilities
Signal quality is maintained over months
EEG signal quality with the UNEEG SubQ compares with that of scalp electrodes and is maintained over months. High quality is demonstrated with low impedance and high stability, reinforcing that subcutaneous EEG technology is suitable for counting seizures over long periods of time.
Demonstrating high signal quality
Adapted from Viana et al. Epilepsia, 2021.
Top: dark blue line, blue-shaded and grey-shaded areas represent respectively, the mean, standard error, and range of daily impedance measurements for each subject.
Bottom: size of the impedance measurements database as it evolves over time, depending on the recording duration of each subject.
Technical & data specifications
UNEEG SubQ
24x17x3.3 mm
Ceramic, titanium, silicone, tungsten, gold and ruby feed.
103 mm.
Silicone.
3 contact points
Outer diameter: 1.06 mm.
Length: 10 mm.
Platinum/Iridium
207 Hz
0.5-48 Hz
< 1 µV
+/-10% at 50 µV for all
frequencies within
1 Hz to 48 Hz
+350 µV