Otto Bock SensorHand Series Instructions For Use Manual page 25

9.1 Program 1:
This control corresponds to the DMC-Control but is additionally provided with the "SUVA-
Sensor" grip stabilization system. Level of grip speed and grip force is determined by signal
strength (resulting from muscle tension).
Proportionally controlled by the opening electrode.
Open:
Proportionally controlled by the closing electrode.
Close:
Example 1: A weak muscle signal generates the smallest grip force (10 N) for grasping
an object. If the Sensor recognizes that the object is slipping it automatically
increases grip force up to 50 % higher (15 N) than the initial grip stength.
FlexiGrip becomes active at 20 N. Once the object has been repositioned, the
SensorHand Speed reverts to the previous grip force.
Example 2: A stronger muscle signal generates a higher grip force and the automatic grip
force increases to a maximum of 100 N to prevent the object from slipping.
FlexiGrip becomes active at 130 N. Once the object has been repositioned, the
SensorHand Speed reverts to the previous grip force.
Program 1: DMC plus Sensor (white coding plug)
OPEN
Myo-signal to the Myo-signal to the
electrode electrode
Speed: Speed: proportional
proportional 15 mm/s to
15 mm/s to 300 mm/s
300 mm/s
The user can always independently overcome the AutoGrasp feature with a stronger muscle
signal and increase the grip force, if necessary, up to a maximum of 100N.
Attention: A short "OPENING" impuls will stop the AutoGrasp as well as the FlexiGrip function.
9.2 Program 2:
The hand closes at maximum speed and grips the object with the minimal grip force (10 N).
If the Sensor senses the object slipping, it automatically increases grip force up to the maximum
(100 N).
FlexiGrip becomes active at 130 N. Once the object has been repositioned, the SensorHand
Speed reverts to the previous grip force.
proportionally controlled by the opening electrode.
Open:
at highest speed by short muscle signal at any level over the ON-Threshold to clos-
Close:
ing electrode.
SensorHand Speed
DMC plus Sensor
White coding plug
Control with 2 electrodes
CLOSE Initial Grip
Strength
proport.:
0 N – 100 N
AutoControl – LowInput
Red coding plug
Control with 2 electrodes,
1 electrode and 1 switch, or
1 switch
Auto­Grasp Grip
Force Increase
proportional:
Up to 50% higher
than initial grip
stength
e.g. Initial grip
strength 10 N =
increase of grip force
up to max. 15 N
Flexi­Grip Function
dependent on initial
grip force, each
slightly above the max.
grip force
FlexiGrip effective:
min. at 20 N
max. at 130 N
Ottobock | 25