Otto Bock 8E38 9 Instructions For Use Manual page 24

9 Description of control modes
9.1 Control mode 1:
The grip speed and grip force are determined by the strength of the electrode signal (resulting
from the muscle contraction). With another, stronger electrode signal, the amputee can always
increase the grip force up to the maximum of approx. 100 N.
Proportionally controlled by the OPENING electrode.
Opening:
Proportionally controlled by the CLOSING electrode.
Closing:
Example 1: A gentle electrode signal applies the smallest grip force to the object.
Example 2: A stronger electrode signal creates a more powerful grip force. Another, stronger
electrode signal increases the grip force up to the maximum of approx. 100 N.
Control
mode 1
DMC plus Sustained electrode signal
Speed: proportional
Adjustment regulator A
Display of the MyoSelect (757T13)
24 | Ottobock
DMC plus
Control with 2 electrodes
OPEN
Sustained electrode signal
Grip force: proportional
After gripping once with
maximum force, the EMG
signal required to OPEN
the Hand will be set to a
higher value. Opening the
MyoHand VariPlus Speed
with unwanted electrode
signals is prevented.
Speed: proportional
Adjustment regulator A
Adjustment regulator A is used to adjust the proportional speed
of the "OPENING / CLOSING" function and the speed of grip
force build-up.
Notice: Always check the adjustments on the prosthesis and
adapt them to the amputee.
CLOSE
8E38=9, 8E39=9, 8E41=9
Indication
For patients with
two strong elec-
trode signals