Quell Wearable Pain Relief User Manual - page 35
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34
APPENDIX F: Technical Specifications
APPENDIX F
Technical Specifications
Output
Waveform
Biphasic with alternating leading phase, symmetrical, rectangular
Regulated Current or Voltage
Current
Net Charge per Pulse
0±1 µC into 500Ω load
Maximum Output Voltage (±10%)
100 V
Maximum Output Current
(<1KΩ load) (±10%)
100 mA
Pulse Duration (±4%)
200 - 400 µsec
Pulse Frequency (±4%)
60-100 Hz, randomly varying
Pulse Pattern
Continuous
Maximum Phase Charge
20 µC
Maximum Current Density
0.71 mA/cm
2
into 500Ω load
Maximum Average Current
4 mA into 500Ω load
Maximum Average Power Density
7 mW/cm
2
into 500Ω load
Output Trips
No Load
Device not connected to patient
Insufficient Charge
Delivered charge below target
Over Load
Delivered charge above target
Electrode Peeling
Electrode dislodging from skin
Therapy Session
Timer
60 minutes
Start Therapy
Click button once
Stop Therapy
Click button 4 times
Manual Intensity Increase/Decrease
Increase +1.25% per second, decrease -5%
Habituation Compensation
Adaptive stepwise increase in intensity of during session
Electrode
Type
Self-adhering, single-patient use, multiple applications
Materials
Mylar substrate, silver electrode pads
Number of Electrodes
2, outer electrode area 28 cm
2
, inner electrode area 33 cm
2
Connector
Medical snap (male)
Dimensions
0.2 cm x 5.3 cm x 28.3 cm (exterior)