22 May Introducing Myo Plus pattern recognition
An exciting new development in the world of upper extremity prosthetics!
Introducing Myo Plus pattern recognition
Where are we currently with upper extremity prosthesis control:
The technology behind myo-electrical prosthesis control has been around for many years. With many manufacturers designing their limbs to be controlled via one or two electrode systems built into the prosthesis socket. This system worked very well for a long time, but it had its limitations when multi-articulating hands were developed. Especially when wrist rotators and elbow joints had to be controlled and switched between with only two electrodes – the result is a long and slow learning curve with users being frustrated by the limitations. One of the key features with current myo-systems is that the user has to adapt to the prosthesis – the prosthesis function remains constant.
Myo-plus introduces pattern recognition technology:
When a person wants to perform a certain hand movement, the brain sends corresponding signals to the muscles in the forearm. Even if an individual has had an amputation or has a congenital malformation, a mental image of the hand usually remains mapped in the brain. Amputees can still imagine closing/opening their hand or rotating it. This activates the remaining muscles in the residual limb. The corresponding organ that would carry out the hand movement is missing.
Activation of the forearm muscles is referred to as a movement pattern that is assigned to a certain hand movement. Myo Plus learns to interpret these individual movement patterns of the user and assigns them to a specific prosthesis movement. The Myo Plus system makes use of up to 8 radially positioned electrodes in the socket.
This intuitive control enables users to fully exploit the potential of their highly complex, multi-articulating prosthetic hands. Myo Plus pattern recognition is optimised for the Bebionic hand and the MyoBock systems.
THE PROSTHETISTS OF GRANT MONAGHAN & ASSOCIATES ARE AMONG THE FIRST CERTIFIED IN THE COUNTRY TO PRESCRIBE, MANUFACTURE AND FIT THE MYO PLUS PROSTHESIS SYSTEM.
What does this mean for the user?
Finally, the prosthesis user can now get the full potential out of a multi-articulating prosthetic hand! Movement patterns are recorded via a simple process using the App on your tablet or smartphone. These “phantom hand” movements are stored in the prosthesis – therefore the user himself determines with which thoughts the prosthesis is controlled.
Other user benefits include:
Intuitive and individualized control: The user chooses the most convenient phantom hand movement to map to a prosthetic hand movement.
Direct and fast control: Direct selection of prosthesis movements without “switching”. Significantly less concentration is required as a result, and the user can control the prosthesis intuitively and seamlessly.
Improved proportional control: Finer and more precise control of prosthetic functions.
Add more movement patterns via the app: To improve the reliability of the control, but also to add new prosthetic movements. Myo Plus pattern recognition is adaptive and learns individual commands directly from the user.
Training the movement patterns is straightforward and is visualised via the Myo Plus app. Calibration may be repeated at any time.
The user can adjust the speed of the prosthetic joints via the app.
The Myo-plus app is available on the Google play store as well as the Apple App store.