Otto Bock 17KL6 Instructions For Use Manual page 22

5 Preparing product for use
Orthosis alignment
► For the upper and lower leg area, select suitable materials to reduce the
torsional stress on the orthosis.
► Record the parts and lot number in the patient file to enable tracing in
accordance with product liability law.
► Use the 743Y57=1-6 or 743Y57=1-7 alignment insert for the correct
alignment of the orthotic joints.
► The orthotic joints are produced with a standard 7° knee flexion angle.
When adjusting orthotic joints, do not exceed a knee flexion angle of 10°
for aluminium and 15° for steel.
► When using thermoplastic material, additional reinforcement is required
in the area of the thigh and calf.
Protect the product against environmental influences
► Apply a protective coating to the aluminium bars or polish them slightly.
► The steel that is used can rust. Apply a cover or paint to the product for
extra protection before handing it over to the patient.
► The joint mechanism must be protected against dirt by a suitable protect­
ive device (e.g. joint protectors) to ensure proper functioning.
Locking mechanism
► Orthotic joints with a ring lock are delivered ready-to-use. Do not adjust
the locking mechanism or the orthotic joint.
Bending bars
► Align the bars with the bending irons without exposing the joint heads to
any bending load.
► The bending radius must be at least 20 mm. The allowable bending
range is marked with a dotted laser line on the bars – do not bend
inside that range.
► INFORMATION: Limit the bending of bars to a minimum, as
excessive bending of bars can result in loss of stability and prema­
ture breakage of the bars.
Heat treatment of bars
All bars have been heat-treated.
► Heat the bars while observing the temperature limits for aluminium of
150 °C (302 °F) and for steel of 300 °C (572 °F).
► DANGER! Grinding and polishing the bars with much force can
create temperatures of above 100 °C. Slowly air-cool the rails and
do not immerse them in cold water for immediate cooling.
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