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Chapter 10. Technical specifications
10.1. Specifications
Device Sizes
Battery
Working time
Device Weight
Range of Motion
Actuator Spec.
Failsafe Feature
Bluetooth
Product
compliance
Essential
Performance
SAIT‐IFU‐GEMS‐H Rev.1.1 (2019‐11)
S, M, and L size
Rechargeable lithium ion, 21.6 V, 2950 mAh, 2 hrs charge time
Minimum 2 Hr. of continuous walking* (with gain = 7, delay = 0.25 s)
Minimum 1 Hr. of continuous walking* (with gain = 8, delay = 0.25 s)
* at a walking speed of about 1.9 ~ 2.5 MPH (0.8 ~ 1.1 m/s)
4.7 lbs (2.1 Kg)
Hip: 100° flexion to 40° extension
2 motors, 12 Nm ±15 % max torque
Motor torque disables; device becomes passive
Frequency range: 2402‐2480 MHz
Bluetooth version: V2.1 + EDR
Modulation type: Frequency hopping spread spectrum
Transmit power: 4.61 dBm (Peak)
Dwell time: <=0.4 s
The GEMS‐H is classified in the following categories for compliance with IEC 60601‐1:
Internally powered, Type‐B applied part
For continuous operation
Not suitable for use in the presence of flammable anesthetics
Not for use in the presence of an oxygen‐enriched atmosphere
Degree of protection against particulate matter: IP20
Safety related to the range of motion
Torque tracking at maximum angular velocity
Maximum torque
Providing assistive torques at operation for walking and stopping
Generation of assistive torque patterns according to the change of control parameters
Continuous use time
Noise
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