Ottobock | 11
NOTICE
Damage caused by improper cleaning agents.
Do not use any
aggressive cleaning agents since they could cause damage to bearings,
seals, and plastic parts.
2.4 Function
The Ottobock System Hands –voluntary closing– are available in the fol-
lowing designs:
8K26=L/R* with metric thread M12x1.5
with outer pull
8K27=L/R* with inch thread ½“-20
with outer pull
For the various sizes see table in section 3.
The System Hands –voluntary closing– belong to the cable-activated
prostheses and are closed by a harness control system (active). The grip
force is increased by intensifying the pull. Further pull releases the lock
and spring tension opens the hand.
The System Hands –voluntary closing– perform the three-finger grip with
the index, middle finger, and thumb.
To get a harmonious picture of the closing and opening movement of the
entire hand, the ring finger and small finger are coupled to the middle fin-
ger via the inner hand.
The grip force needed for opening can be changed by adjusting the spiral
spring. For this purpose, the System Hand –voluntary closing– is to be sent
to an Ottobock Service centre.
3 Technical data
Size
7 ¼
7 ¾
8
Weight [g]
340
370
380
Total height [mm]
152
155
157
Thumb length [mm]
132
135
137
Summary of Contents for 8K26
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