Repair/Maintenance - Ottobock 8E38 Patienteninformation

over an extended period of time. The Hand can also be operated with the 757B15 X-ChangePack, but this
will result in capacity restrictions.
For detailed instructions on care of the battery, please refer to the instructions for use included with the bat-
tery. To recharge the batteries, use only the Ottobock Battery Chargers mentioned in the instructions for use.
Attention!
As soon as the DMC plus or the Digital Twin electronic system recognises a fully charged 757B20/757B21
EnergyPack or 757B25=*, 757B35=* MyoEnergy Integral, it automatically switches to Li-Ion battery tech-
nology. Once this has happened, only this technology should be used to operate the system. If a 757B15
X-ChangePack is employed after the control has switched to Li-Ion battery technology, the battery can not
be used to its full capacity. The 757T13 Ottobock MyoSelect can be used, however, to reset the System
Hand control for use with X-ChangePack or Interchangeable Battery.
For operational safety and reliability, only 757B20, 757B21, 757B15, 757B25=* or 757B35=* batteries
are to be used.
As delivered, the System Electric Hand's default setting is optimised for for NiMH Batteries.

2 Repair/Maintenance

If the System Electric Hand is not in use, it should be left in the open position to protect the sensor and mechanism.
Since all moving parts are subject to some wear and tear, yearly service check-ups are required. During
the service visit, the entire System Electric Hand will be inspected by Ottobock Service and any necessary
adjustments, lubrication or replacements of worn parts will be performed.
Instructions for care of the prosthetic glove are enclosed with the glove. For further information, please contact
your prosthetist.
3 Additional Information for Patients with a System Electric Hand with Dynamic Mode
Control Plus*
Your prosthetist may choose from two different control modes by inserting or removing a function plug from
the System Electric Hand with DMC plus.
3.1 DMC Control Mode: Function plug attached.
Grip speed and grip force are determined by the strength of the muscle signal. As soon as the strength of the
muscle signal changes, grip speed and grip force immediately and proportionally adapt to the new muscle
signal. The gripping process is much more natural, and makes it easier to gently grip small or fragile objects.
3.2 DMC plus Control Mode: Function plug not attached.
Grip speed and grip force are determined by the strength of the muscle signal. As soon as the strength of the
muscle signal changes, grip speed and grip force immediately and proportionally adapt to the new muscle
signal. After gripping once with maximum force, the EMG signal required to open the Hand will be set to a
higher value. This reduces the risk of the Hand opening due to unintentional muscle contraction.
Gripping security for activities such as eating will be increased.
4 Disposal
These products may not be disposed of with household waste in some jurisdictions. Disposal that
is not in accordance with the regulations of your country may have a detrimental impact on health
and the environment. Please observe the information provided by the responsible authorities in
your country regarding return and collection processes.
* Dynamic Mode Control plus is a proportional control system using microcontroller technology.
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