Otto Bock 8E38 8 Series Instructions For Use Manual page 36

Stopping: Relaxing the muscles very slowly via the electrode causes the hand to stop in the
open position.
Electrode 2:
Gripping: The build-up of the gripping force is determined by the level of the muscle signal
on the second electrode.
Example 1: After opening, relax the muscle at any speed. Closing is proportional to the speed
of muscle relaxation. The object is grasped with the minimum gripping force.
Example 2: After grasping as in example 1, the object is to be gripped with a higher gripping
force. To do so, the patient generates an electrode signal on the second elec­
trode. A gripping force of up to approx. 100 N can be built up proportionally.
Open
Increasing electrode signal via muscle contrac­
tion on electrode 1
Speed: Proportional
2.2.1.5 Program 5: DigitalControl
Control with: Two electrodes, one electrode and one switch or one switch
The hand closes at constant speed, and the gripping force increases proportionally with the dura­
tion of gripping.
Control with two electrodes
Opening: Digital. Via the OPEN electrode. The hand opens at constant speed.
Closing: Digital. Via the CLOSE electrode. The hand closes at constant speed.
Open
Sustained electrode signal
Speed: Constant
Control with one electrode and one switch
Opening: Electrode signal via the OPEN electrode.
Closing: Signal via the switch. The hand closes at constant speed.
Open
Sustained electrode signal
Speed: Constant
Control with one switch
This program can be used in combination with any MyoBock switch.
36
Close
Declining electrode signal via muscle relaxation
on electrode 1
Gripping force: Proportional to the signal
strength on electrode 2
Re-gripping with the maximum gripping force
on electrode 2 prevents the hand from opening
due to unintentional electrode signals.
Speed: Proportional
Close
Sustained electrode signal
Gripping force: Depending on the duration of
the signal
Speed: Constant
Close
Signal via the switch
Gripping force: Depending on the duration of
the signal
Speed: Constant