Otto Bock Myo Plus User manual

User evaluation with
Myo Plus in 10 Steps
Quick Guide
Use the following steps to connect the Myo Plus system
to an iOS or Android app for user evaluation and training.
These instructions are intended for Myo Plus qualied O&P Professionals. Please see the
full course for detailed information on all features and functions.
Myo Plus

2 Ottobock | Myo Plus Quick Guide
• On the main menu , click on
Bluetooth Connections
Add a new connection by clicking on the icon
• If Bluetooth is deactivated on your device, conrm the Bluetooth request
with ALLOW
• Select the serial number and enter the Bluetooth PIN that can be found on
the card that comes with the system
• An active / inactive Bluetooth connection will be indicated in the
lower right corner
• If Bluetooth pairing request pops up, conrm with OK
The app is now successfully connected to the Myo Plus system
• The multicolored star pattern indicates the System Test is active. Deactivate
the system test using the toggle switch below the Spiderplot to clear the
plot and proceed with tting.
Use a previous paired Myo Plus Cuff
• If you have previously paired this Myo Plus Cu with the same
programming device and have not completed a factory reset, the Bluetooth
connection should happen automatically (when the Bluetooth setting is
active on the device, and it’s paired to the cu). In this case, the pairing
request mentioned in the step above will not be displayed.
Step 2 | Pair Myo Plus Cu to your smart device
Tablet or phone settings
Step 1 | Download App
• Download the Myo Plus App to your smart device
(Apple App Store, or Google Play)
• Open the App
• Turn on the Myo Plus Cu by pressing the charging receptacle until
two short beeps and a green light appears

3 Ottobock | Myo Plus Quick Guide
Step 4 | Myo Plus Cu Set Up
After login as clinician, the app automatically
navigates to the clinician settings menu
• Choose a name of the prosthesis
• Select if an electric wrist rotator should be simulated
• Select if the tting is on the le or right side
• System test must be deactivated
Set the designated hand type
• In the main menu , click on MyoCu
• Choose either bebionic or MyoBock hand for the simulation
In case of an interim or definitive prosthesis the
number of electrodes will be set automatically to
the amount built into the socket.
• On the main menu , under Clinician Mode
click on Login
Enter Username and Unlock PIN
• These are provided to you at the time of professional
certication for Myo Plus
Now create your own unique password
• This will be used in the future to access clinician mode
• Password criteria: minimum 8 characters including capital letters, lower
case letters, numbers and special characters.
• Aer 5 wrong login attempts, the account is locked for 30 seconds.
Step 3 | Log-in as Clinician

4 Ottobock | Myo Plus Quick Guide
• Put on the Myo Plus Cu so that the hand symbol is
legible from the user’s point of view.
• Then rotate the Myo Plus Cu so that the ulna is positioned on
the indicated line between electrodes no. 1 and no. 8.
• In this orientation, electrode numbers increase in the medial direction.
• Electrodes 1-4 will be positioned over the extensors.
• Electrodes 5-8 will be positioned over the exors.
Step 5 | Orientation of Myo Plus Cu on limb
Check connectivity of Myo Plus Cuff
Aer adjusting the Clinician settings navigate to the menu
Spiderplot/Training.
To test connectivity to electrodes and conrm all 8 are functioning, tap each
electrode set on the Myo Plus Cu to conrm that patterns are created on
theSpiderplot.
The Pattern Scaling Active feature enlarges the size of the patterns for
easier viewing.
• Black electrode numbers indicate full functionality
• White electrode numbers indicate a signal disturbances e.g. missing skin
contact or external inuence. They will be turned o temporarily.
• Red electrode numbers indicate a malfunction or broken electrode.
Pattern Scaling Active Pattern Scaling In-Active

5 Ottobock | Myo Plus Quick Guide
Before recording data, have a conversation with the user to determine
what phantom limb motions they feel they can try to create. Have them do
the same motion on the contralateral limb if they are a unilateral amputee.
To test and evaluate the muscle patterns in real time click the
menu Spiderplot / Training
By performing a movement with the phantom hand the corresponding
muscle activities are shown in real time through the gray lled shape.
It is important that each pattern is clearly dierent from other patterns. If
they are not, coach the user to try and recruit slightly dierent muscle
activity. For example, consider having them lead pronation or supination
with the thumb or small nger to recruit more muscle activity.
The Pattern Scaling active feature enlarges the size of the patterns
for easier viewing.
The number of necessary movement patterns depends
on the planned prosthesis fitting
• e.g. a MyoBock hand with active rotation needs 4 patterns,
open/close/pronate/supinate
Step 6 | First signal evaluation
Good
Differentiation
Poor
Differentiation
close hand open hand
Bild dazu

6 Ottobock | Myo Plus Quick Guide
Step 8 | Record Test Set
1. Press button to begin recording
Tip: the recording can be paused with and continued at any time.
2. Relax Phase
Relax the limb during the Blue and Red phase.
Complete relaxation is important so the system can recognize a baseline “quiet”
setting for the user.
TIP: Activate the Spiderplot in the recording circle, as shown below in step 5, to
verify that no muscle activity is occurring during relaxation.
3. Preparation Phase
Relax the Limb and prepare for the next indicated movement.
Click on Basic Set in the main menu
• Select pause time between recording sets; 4 seconds is default and
a good choice for most users.
• For a test evaluation start with two recordings in the 90-degree bent
arm position – by clicking on the green arrow the recording page
isdisplayed.
Depending on which components are chosen, a number of
movement patterns must be performed during the
recordingprocess:
• Independently of the terminal device, three dierent movement
patterns must be performed in order: relax, hand open, hand close
• With an active wrist rotation, two additional movement patterns must
be performed in order: palm up, palm down
Step 7 | Prepare Test Set recording

7 Ottobock | Myo Plus Quick Guide
Aer both recordings have been performed, make sure that both recording
sets are selected .
By scrolling down and clicking on Create test set , a test set is created from
the recordings and stored temporarily in the Myo Plus Cu.
Tips
Scroll down and select Show Spiderplot instead of MotionClass will
change the view for a better evaluation of an actual contraction pattern.
By observing these patterns, you can guide the user in performing the
contraction towards the indicated electrode position (1 to 8)
4. Recording Phase
Perform the indicated movement starting with a contraction from 0% at the
beginning and constantly increasing up to 80% contraction strength.
As the movement is performed, the red bars will start to ll in.
5. Repeat this procedure until all movements have been recorded
When the Myo Plus Cuff is switched off the data will
be erased from the cuff.
The recorded sets are still stored in the Myo Plus App. If you
intend to continue with the same patient you can create a set by
selecting the previously recorded patterns and clicking Create test set .
0%
20%
40% 60%
80%

8 Ottobock | Myo Plus Quick Guide
Now test the reliability of the control in
real time in the menu Spiderplot / Training
Each function in the prosthesis is assigned a colored outline, which can be
seen by scrolling down below the Spiderplot
• By performing a movement with the phantom hand, the corresponding
muscle activities are shown in real-time through the gray lled shape
• By checking or unchecking individual motions, patterns can be removed or
added to the Spiderplot to ease evaluation when necessary
If the user encounters problems during testing the recorded movements
try the following:
• The user may have produced an incorrect pattern during or aer the recording
• Train the phantom movements with the user again, and try varying the
individual patterns
• Simultaneously perform the movement with the contralateral hand
• Take a break to regain the user’s concentration and relax possible muscle fatigue
• Record the patterns in the test set again
By swiping to the left, the movement display will appear
• The red bar indicates current relative contraction strength
• The hand symbol indicates the movement pattern currently being detected.
Step 9 | Test reliability of the patterns
Show Spiderplot
• Scroll down and select Show Spiderplot instead of MotionClass will change
the view for a better evaluation of actual contraction pattern.
If the user can perform the movement patterns without major diculty, you
can continue with the basic set recording.
A strong pattern is indicated by a solid
appearance . A weak pattern would flicker
between multiple movement pictures.

9 Ottobock | Myo Plus Quick Guide
Optional | Connect a Demo Prosthesis
1. Connect the Myo Plus Cuff to the demonstration prosthesis
• Turn o the cu and demonstration prosthesis.
You will hear a beep.
• Place a MyoBock or bebionic terminal device in the wrist
connection/lamination ring on top of the demonstration stand
• On the cu, open the button near electrode No. 3,
gently pull out the 2-poled cable attached to the Myo Plus TR processor
and close the button again.
• Connect the 2-pole cable of the Myo Plus Cu to the 2-pole
socket of the extension cable.
The quality of the Basic Set is of great importance
It creates the foundation for how the system operates and
recognizes muscle activity patterns.
• Click on the arrows for the additional 2 arm positions:
Arm Hanging and Arm Extended
• For each arm position, record 2 sets of data. When all 6 sets are
checked, click on Creating the Basic Set
• A basic set can only be created when all 6 recordings
have been made
• When using a interim prothesis all 6 sets must be recorded
Step 10 | Create Basic Set

10 Ottobock | Myo Plus Quick Guide
• Connect both plugs of the Y-cable of the Myo cu to the free
3-pin sockets of the extension cable. NOTE: Use silicone
grease (633F11) before connecting!s Cu to the free 3-pin
socket of the extension cable.
The cable with the blue dot belongs to the port
with a cable tie attached
Attention: Do not remove the cable tie!
2. Establish the connection
• It is important to switch the cu on before starting the Myo Plus app.
Do NOT turn on the demo dome yet.
• Switch on the Myo Plus Cu, you will hear 2 short
beeps and see a green light
• Start the Myo Plus App and establish a Bluetooth connection
• Login as a clinician
• Go to menu and select Myo cu , choose between bebionic
and MyoBock device and click on Connect
• NOW switch on the demonstration prosthesis within 15 seconds.
You will again hear 2 short beeps and see a green light.
• If the Myo Plus Cu is connected to the demonstration
prosthesis, the app switches to the main menu
and select Spiderplot / Training
• Now the terminal device will perform the user’s movement
Y-cable extension cable