Maintenance Instructions - Ottobock 3R93 Instrucciones De Uso

Problem
Lower prosthetic leg swings back
too far; lower prosthetic leg does
not reach extension position in time
prior to heel strike.
Lower prosthetic leg does not swing
back far enough; initiation of the
swing phase is too difficult; ac-
celeration of the lower prosthetic
leg towards the extension stop is
too high.
4.3 Foam cover
The 3S107 or 3S106 Foam Cover can be used for the 3R93.
CAUTION
Risk of falling when using talcum powder. Talcum powder reduces the lubrication of the me-
chanical parts, which may lead to considerable malfunctions and result in brake function failure
and thereby cause the patient to fall.
Do not use talcum powder. Using this medical device after application of talcum powder will
render all claims null and void.
INFORMATION
An alternative for eliminating friction noises between the foam cover and prosthesis is a silicone
spray (519L5) that can be sprayed directly onto the friction surface of the foam cover.

4.4 Maintenance instructions

Please make your patients aware of the following safety instructions:
CAUTION
Risk of injury as a result of excessive strain. The knee joint function may be affected by both
environmental and service conditions. To reduce the risk for the patient, the knee joint must not
be used when noticeable functional changes occur.
Noticeable functional changes may include poor response, incomplete extension, diminished
stance phase stability, deteriorating swing phase behaviour, abnormal noises, etc.
Measure: Have the prosthesis inspected by a prosthetist.
NOTICE
Risk of damage caused by improper cleaning agents. The use of aggressive cleaning agents
must be avoided. They may cause damage to bearings, seals and plastic parts.
Do not disassemble the joint! If you have a problem, please send the joint to Ottobock.
3R93
Cause
Spring tension is set too
low.
Spring tension is set too
high.
Action
Increase spring tension: Insert the
adjustment wrench at the spring
adjustment ring and turn counter-
clockwise; the spring adjustment
ring will engage with the next level.
Decrease spring tension: Insert the
adjustment wrench at the spring
adjustment ring and turn clock-
wise; the spring adjustment ring
will engage with the next level.
(Delivery condition = level 1 = low-
est spring tension. Do not turn
the adjustment ring clockwise
any further!)
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