9
8
BATTERY TIPS
For optimum system performance, the battery should ideally be charged at the end of each day so it is fully
charged the next day. If a battery is not used for an extended period of time, it may have to be recharged
prior to use. Short battery charging/discharging cycles will indicate that the battery is approaching end of
life or is defective. At the end of battery life, only the bottom LED will flash when you press the battery status
button.
RE-PLACING THE BATTERY (Figure 8)
Push the newly charged battery into place (bottom first) until a click is heard. The prosthesis is now ready for use.
POWERING ON OR OFF THE PROSTHESIS
1. To power on the prosthesis, press the
“On/Off ”
switch at the rear of the prosthesis. The prosthesis vibrates
shortly, a three-tone ascending beep is heard, then the prosthesis status LED flashes slowly.
A flashing green LED indicates that the prosthesis is ready for use or operating. An abnormal condition will
be indicated by a beep sound, an orange LED and/or a vibration (the prosthesis will vibrate shortly at
power-up, however, which is normal). See additional information on warnings and errors in WARNINGS &
ERRORS section.
2. To power off the prosthesis, press the
“On/Off ”
switch again. A three-tone descending beep is heard and the
prosthesis status LED goes off.
(Figure 9)
OPERATION
Practise using your prosthesis until you are fully comfortable with each of the activities described below and
have your CPO fine-tune all adjustments for maximum personal comfort and optimal system performance.
“STANDING STATE”
The prosthetic knee automatically adjusts its behavior to activities like walking, ascending or descending stairs/
ramps, etc. When none of these activities are detected, it operates in
“standing state”
, allowing you to move
effortless in confined spaces while performing common day-to-day tasks like cooking in the kitchen, and queuing
at the bus station. The prosthetic knee locks and provides you full support whenever stance is detected, and
unlocks and moves freely during swing phase. In
“standing state”
, the prosthetic knee allows you to take small
steps more naturally without having a locked knee feeling.
WALKING ON A LEVEL SURFACE (Figure 10)
1. Take the first stride with whichever leg you decide and simply start walking at your normal pace. The behavior of
the prosthetic knee adjusts automatically: the prosthetic knee provides support whenever ground contact is
detected, releases as swing initiates and moves forward actively to support a dynamic swing pendulum motion.
2. If a problem occurs, stop walking, hold the prosthetic foot in contact with the ground for approx. 3 seconds
then resume walking.
STANDING UP (Figure 11)
1. Place your weight on the prosthesis.
2. Lean forward slightly and initiate the standing-up movement by applying force on the prosthetic knee. Feel how
the prosthetic knee assists your standing-up movement naturally.
SITTING DOWN (Figure 12)
1. Allow the prosthetic knee to reach the
“standing state”
.
2. Place your weight on the prosthesis.
3. Force the prosthesis into flexion by leaning backwards. Feel how the prosthetic knee supports your sitting-down
movement naturally.
4. If you stop the sitting-down movement before completion, the prosthetic knee will lock at the same flexion
angle to support your weight while you squat. To unlock the prosthetic knee, lift the prosthetic foot from the
ground.
