Definition Of Terms; Intended Use - Ottobock DynamicArm 12K100N Gebrauchsanweisung

The product can lift a load of up to 5 kg at a forearm lever length of 305 mm. Once this load is
exceeded, the joint will be locked. Flexion and extension are only possible again after the load is
reduced.

2.2.1 Definition of terms

AFB (Automatic Forearm Balance)
AFB is a flexion assist in the form of a mechanical gear mechanism in the forearm of the elbow
joint. The Automatic Forearm Balance provides for harmonious movement control, free swing and
reduction of energy consumption. It stores the energy that is released when the arm is extended
and uses this to assist with flexion. The degree of flexion assistance can be adjusted to the indi­
vidual weight of the prosthetic forearm and to different clothing by means of a dial.
The free swing of the forearm corresponds to the natural movement behaviour of the upper limb
while walking. After extension of the forearm, the vario-gear automatically decouples the forearm
from the drive unit so it can swing freely. The AFB slightly dampens the free swing, thereby mak­
ing a close approximation of the forearm's physiological movement behaviour possible.
The product does not consume electrical energy during the free swing. A short muscle signal to
flex the product ends the free swing.
Humeral rotation feature
The humeral rotation feature is an upper arm rotation joint with bilateral stops. It is used for rota­
tion of the forearm. The resistance of the humeral rotation feature can be changed using the
adjusting screw.
Lock
Releasing and locking the elbow joint is automated according to operating situations, the applied
load and the control signal generated by the patient by means of the electronically controlled lock­
ing drive.
The product has a load capacity of up to 230 N in the locked state with a forearm lever length of
305 mm. The lock will slip under higher loads.
Mechanical release
With the product switched off or when the battery is drained, the elbow can be manually unlocked
and locked again with a slight pull on the unlock cable. In this way, the forearm can be brought
into the desired position. Mechanical release can also take place under load.
On/off switch

3 Intended use

3.1 Indications for use
The product is to be used exclusively for exoprosthetic fittings of the upper limbs and serves as
an anatomical replacement for the elbow joint and forearm.
3.2 Conditions of use
The product is intended exclusively for use on one user. Use of the product by another person is
not approved by the manufacturer.
Press the on/off switch to operate it (arrow).
A signal sounds and the product briefly vibrates once when it is turned o
Turning the elbow joint off during longer passive breaks is recommended
This increases the period of use before charging the battery.
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