Streifeneder ortho.production KINEGEN.comfort 3A1010 Instrucciones De Uso página 11

Set the joint mobility by adjusting the axle friction
„
The amount of braking force is set by the axle friction. Increasing the axle friction also increases
the resistance to movement between the knee axle and the brake bushing. Even slight adjust-
ments of the screw can result in noticeable changes. If the setting is too tight, the braking effect
occurs even without load. If the adjustment is to loose it can cause noises and premature wear.
To access the screw, first remove the red cover (fig. 4). Increase the axle friction by turning the
set screw (B) clockwise with a 2.5 mm allen key.
The axle friction setting affects the behaviour of the load-dependent brake.
Adjusting the extension assist spring
„
To ensure reliable knee extension, the extension assist spring should be adjusted using screw
(fig. 5, D).
Turning the screw clockwise increases the extension support, turning it counterclockwise
decreases the support. The adjustment of the spring also affects knee flexion during swing
phase: the stronger the spring is adjusted, the less flexion occurs during the swing phase.
„ Adjusting the pneumatic swing phase control
The pneumatic swing phase control allows for harmonious gait adjustment. The flexion and
extension movement depends on the tension of the extension assist spring, the position of the
corresponding pneumatic valve (fig. 6, E and F) and the axle friction.
The swing behaviour of the prosthesis is also influenced by its length, the weight of the foot
and shoe, and the patient's usual habits.
To reduce the risk of the patient falling, start by adjusting the flexion resistance.
Adjusting the pneumatics (fig. 6):
Condition
Flexion angle too big
Flexion angle too small
Extension movement too fast Increase extension resistance
Extension movement
too slow
The fine adjustments using the extension spring and axle friction may require readjust-
ment of the pneumatic settings. For example, increasing the extension assist spring
tension may require increasing the extension resistance, while increasing the axle
friction may require reducing the pneumatic resistances.
Never fully tighten the valve screws when in use, as this can damage the valves while
in motion.
Measure
Increase flexion resistance
Reduce flexion resistance
Reduce extension resistance
Action
Turn screw F clockwise
Turn screw F counterclockwise
Turn screw F clockwise
Turn screw E counterclockwise
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