OYMotion Technologies gForceDual Neuro Rehab User manual

gForceDualTM Neuro Rehab System
User Guide
OYMotion Technologies Co., Ltd
www.oymotion.com

OYMotion Technologies Co., Ltd All Rights Reserved©2015-2021
Contents
1. Preface..................................................................................................................................................................1
2. Product Introduction...........................................................................................................................................1
3. Models..................................................................................................................................................................1
4. Model Description...............................................................................................................................................1
5. Scope of Application...........................................................................................................................................1
6. Product and Packaging...................................................................................................................................... 2
7. Product Component Introduction.....................................................................................................................2
8. System Connection............................................................................................................................................. 4
9. Operation Instructions........................................................................................................................................6
10. Specifications...............................................................................................................................................7
11. Precautions.................................................................................................................................................. 8
12. Packing List.................................................................................................................................................. 8
13. Contact US................................................................................................................................................... 9

gForceDualTM Neuro Rehab System User Guide
1
1. Preface
Dear users, thank you for purchasing gForceDualTM Neuro Rehab System from OYMotion
Technologies Co., Ltd. To further understand this product, please read this user guide
carefully.
2. Product Introduction
OYMotion gForceDualTM Neuro Rehab System is a wearable device designed to carry out
specialized muscle active rehabilitation training. The gForceDualTM comes equipped with two
highly sensitive sEMG sensors, a nine-axis motion sensor, a vibrator, a rechargeable lithium
battery, and Bluetooth BLE4.2 wireless communication. The gForceDualTM uses disposable
electrodes to monitor user’s muscle activity in real time. Through BLE communication, user
interacts with rehabilitation games running on Android mobile, tablet or smart TV. These
rehabilitation games give user guidance, feedback, and evaluation to better help user.
3. Models
OYM-REH-D001A；OYM-REH-D001B
4. Model Description
Model
Product Name
Description
OYM-REH-D001A
gForceDualTM Neuro Rehab System
Electrode Cable Length: 200mm
OYM-REH-D001B
gForceDualTM Neuro Rehab System
Electrode Cable Length: 350mm
5. Scope of Application
The gForceDualTM system is designed for users with upper limb dysfunction caused by
cerebrovascular accident, brain trauma or nerve system diseases. This system can be used for
users who are recovering from upper limb surgery too.
With the virtual interactive rehabilitation games, user can complete repetitive and
task-oriented rehabilitation training. It helps booster the body’s rate of recovery, increase
muscle fiber recovery, muscle endurance, range motion in the joints, and coordination and

OYMotion Technologies Co., Ltd All Rights Reserved©2015-2021
flexibility of upper limbs. Moreover, the training will promote the remodeling of the central
and peripheral nerve functions and correct the pathological movement pattern caused by
hemiplegia.
6. Product and Packaging
The gForceDualTM Neuro Rehab System is composed of the gForceDualTM 2-channel
wireless electromyograph wrist band, disposable electrodes, USB Type-A charging cable, and
the downloadable Rehabilitation Game App.
Wrist Band
Disposable Electrodes
Charging Cable
7. Product Component Introduction
7.1. gForceDualTM 2-Channel Wireless Electromyograph Wrist Band
7.1.1. Product Diagram

gForceDualTM Neuro Rehab System User Guide
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1- USB Charging Port
2- Silicone Band
3- Buckle Holes
4- Buckle
5- Red LED Charging Indicator
6- Multifunction Button
7- Green LED Status Indicator
8- Channel-1 EMG Differential
Electrode Snap Button
9 – Reference Level Electrode Snap
Button
10- Channel-2 EMG Differential
Electrode Snap Button
11- Snap Button Electrode Cable
7.1.2. Size and Weight
Parameter
Value
Maximum inner diameter of
Wrist Band
72 mm
Length of main module
51 mm
Width of main module
32 mm
Thickness of main module
16 mm
Length of Electrode Cable
200 mm / 350 mm
Weight
59 g / 65 g
7.2. Disposable Electrode
The disposable electrode is composed of metal snap, Ag/AgCl low impedance conductive
gel, PE foam tape or cloth tape with medical hypoallergenic adhesive, PET anti-sticking film.

OYMotion Technologies Co., Ltd All Rights Reserved©2015-2021
Users can adopt disposable ECG electrode with metal snap diameter of 3.7-3.8mm.
Front (adhesive side)
Back (metal snap side)
7.3. Rehabilitation Game App
The Rehabilitation Game App is developed by OYMotion Technologies Co., Ltd to work
with gForceDualTM wrist band. The app can be installed on Android-powered mobile, tablet or
smart TV with BLE support. The gForceDualTM wrist band communicates with the games
through BLE. Multiple rehabilitation games are provided to help users to recover with
repetitive, fun, and task.
Please refer to the corresponding user guide for detailed introductions of the
Rehabilitation Game App.
8. System Connection
gForceDualTM worn on right arm for flexor / extensor training

gForceDualTM Neuro Rehab System User Guide
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gForceDualTM Rehab System Connection Diagram

OYMotion Technologies Co., Ltd All Rights Reserved©2015-2021
9. Operation Instructions
9.1. Use of disposable electrodes: The gForceDualTM has 5 connecting wires: 2 pairs
(adjacent green and yellow snaps makes one pair) of EMG differential wires and a single
reference level output wire (black snap and in middle). Connect the disposable
electrodes to the wires through the snaps. Each pair of electrodes need to stick on the
skin of the interested muscle, be close to each other and along the direction of muscle
contraction. The reference level output electrode with the black snap should stick on a
bony area where muscle activity is relatively low.
9.2. EMG raw data: The gForceDualTM is mainly used to monitor contractions of two muscles
of the arm through the two differential pairs of EMG sensor. It is usually used to monitor
two opposite muscles, such as flexor and extensor muscles in the forearm, or bicep and
tricep muscles in the upper arm.
9.3. Powering on: When the gForceDualTM wrist band device is turned off, press the switch
button for 1 second to turn the device on, after, a green LED below the button flashes at
a frequency of 1Hz. There’s a short vibration as well to indicate successful powering on.
The devices will then wait for a BLE connection. Once the device establishes a BLE
connection with the Rehab Game App the green LED stays on. Once data or commands
start to transmit the green LED flashes faster at a frequency of 2Hz.
9.4. Entering firmware upgrade mode: To enter firmware upgrade mode press the button
for 15 seconds or until the green indicator light flashes 5 times rapidly first then flashes
slowly. This indicates that the gForceDualTM wrist band switches to firmware upgrade
mode, the BLE device name changes to gForceDual-BOOT. Entering this mode is only
recommended if the device’s firmware is damaged or the device is not working as
expected. Upon entering this mode, the user can force a firmware upgrade on the device
through the “gForce App”. When upgrade finishes, power off the device and on the next
power on cycle the device returns to normal work mode.
9.5. Powering off: When the gForceDualTM wrist band is turned on, press the button for 5
seconds and release to turn the device off. The green LED will flash 3 times if the internal
IMU sensor is automatically calibrated successfully during use or otherwise the device
will just turn off.
9.6. Charging: To charge the gForceDualTM wrist band connect the device via the USB
interface. When charging, the red LED turns on. Once charging finishes the red LED turns
off.

gForceDualTM Neuro Rehab System User Guide
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10. Specifications
Main index
Parameters
Communication mode
Low Power Bluetooth BLE4.2
Communication Distance
10 meters
Power Consumption
0.1W
Battery
160mAh/3.7V Li-ion
Power Input
Micro-USB 5V
Vibrator
Built-in
Wrist Band
Material: Silicone Rubber
Length: 243 mm
Maximum Diameter: 72 mm
Device Main Module
Material: Plastic
Color: White
Button Color: Orange
Dimension: 51 x 32 x 16 mm
Electrode Cable Length: 20 cm / 35 cm
Snap Color: Yellow/Green/Black/Yellow/Green
EMG sensor
Sensor Channels: 2
Electrode: Disposable Electrode
Amplifier Gain: 13000 times
Motion Sensor
9-Axis IMU Sensor

OYMotion Technologies Co., Ltd All Rights Reserved©2015-2021
11. Precautions
11.1. Users should properly do some warm-up before and after the training, to avoid muscle
injury.
11.2. At any time during training if user feels an increase in muscle tension, STOP training
immediately and begin stretching to reduce tension. Once user feels better training can
be resumed.
11.3. The duration and intensity of training should be specific to the user’s situation. In general,
training can be performed several times a day and it is recommended to train three
times, in the morning, at noon, and at night. The duration of each session should be
determined according to the user's needs. The user should not feel tired after each
session.
11.4. The system needs to be used with the supporting Rehab Games App which runs on
Android-powered devices.
11.5. The system can be used indoor and outdoor in normal environments. It should not be
used in humid, wet, and electrostatic environments as the device can be damaged.
11.6. The electrodes are disposable and should only be used according to its instructions.
Users can purchase disposable ECG electrode with metal snap diameter of 3.7-3.8mm to
use.
11.7. Use with caution if user is allergic to the disposable electrodes. It is recommended to
avoid skins with scar or wound.
11.8. The electrodes should be used as soon as possible after unsealed to guarantee a good
connection. DO NOT USE electrodes if the conductive adhesive has dried up or can’t
tightly stick to skin.
11.9. Follow local regulations on disposing the electrodes.
12. Packing List
gForceDualTM 2-Channel Wireless
Electromyograph Wrist Band
×1
Disposable Electrode
×10
Charging Cable
x 1
Instruction Booklet
×1

gForceDualTM Neuro Rehab System User Guide
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Warranty Card
×1
13. Contact US
Address: Floor 3, Building 1, 400 Fang Chun Road, Shanghai, China PR
Post Code: 201318
Tel: [phone]
Email: [email protected]
Website: www.oymotion.com

www.oymotion.com
OYMotion Technologies Co., Ltd
Address: Floor 3, Building 1, 400 Fang Chun Road, Shanghai, China PR
Post Code: 201318
Tel: [phone]
Email: [e-mail]
Website: www.oymotion.com
REV. V1.0.1

FCC Statement：Any Changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference,and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However,there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.
FCC Radiation Exposure Statement:
The device has been evaluated to meet general RF exposure requirement . The device can be used
in portable exposure condition without restriction.