Otto Bock 8E70 Instructions For Use Manual page 33

2.2 Function
The product is a myoelectrically controlled and multiarticulating hand prosthesis.
The thumb can be set to two different positions (opposition and lateral), allowing for 14 different
grips (see Page 33). Eight grips can be preconfigured using the adjustment software.
A finger chain that protects the drive serves as overload protection for the 4 actively powered fin­
gers. In case of overloading, the corresponding finger cannot be flexed anymore since the con­
nection to the drive was severed. The finger chain can be replaced without disassembling the ter­
minal device (see Page 52).
Key performance characteristics of the product
• No key performance characteristics according to IEC 60601-1
2.2.1 Grips
Moving the thumb from the lateral to the opposition position
1. Distal phalanx
2. Middle finger joint
3. Finger chain
4. Program switch (see Page 36)
5. Back of the hand
6. Wrist joint
7. CMC joint of the thumb
8. Gaiter
9. Distal thumb joint
1) Firmly grasp the base of the thumb with the
free hand.
2) Apply controlled pressure to push the
thumb inwards until it is opposite the palm.
33