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6) Mount the terminal device on the socket,
turn on the energy supply and set the new
contact point of the thumb with the index
finger (pinch grip) and the index and
middle fingers (tripod grip).
7) By closing and opening the terminal
device, check the new contact point of the
thumb with the index finger (pinch grip)
and the index and middle fingers (tripod
grip).
Once the new thumb position has been set,
close the hand and switch it off. Thus the
closed grip secures the thumb position.
8) Switch the terminal device off with the
thumb fixed.
9) Retighten the adjustment screw by turning
it clockwise, and reposition the gaiter.
10) Switch the terminal device on and test it
with the user.
Thumb contact point:
The adjustment option makes it possible to
optimise the contact point of the thumb with
the opposite index and middle fingers (for the
tripod grip), or with the index finger only (pinch
and precision grips). The adjustment screw is
located below the CMC joint of the thumb.
Perform the following steps to make the adjust
ments:
1) Turn off the energy supply to the terminal
device (e.g. button in the charging recept
acle on the prosthetic socket or switch on
the elbow joint).
2) Separate the terminal device from the pros
thetic socket.
3) Raise the gaiter on the wrist joint and
expose the adjustment screw.
4) Use a 1.5 mm Allen key for the adjustment
screw of the thumb contact point on the
MCP joint of the thumb.
