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6.2 Active operating mode (CAM)
The active operating mode (CAM – Controlled
Active Motion) allows the patient to actively
exercise with a preset resistance between
-30 kg / 0 kg / +30 kg. Negative values between
-30 kg and -1 kg always mean that the patient
is required to pull against the set resistance,
while positive values b1 kg and +30 kg
mean that the patient is required to push. If no
resistance is set, the carriage will operate in the
passive mode, moving in the direction of exten-
sion or flexion. The resistance values (force) can
be set separately for extension and flexion. The
tolerance is 20 % of the set force. If the patient is
not capable of exerting the required force, the
carriage will not move.
For functions that require the active cooperation
of the patient, the range of motion in which the
patient exercises actively, the so-called active
zone, can be preset.
The maximum settings for the acive zone are:
0° / 0° / 90°
.
This range can be reduced as desired and the ex-
tension and flexion range is always 5° less than
the current ROM to allow for a smooth transition
between the directions of movement.
If the range of motion exceeds the active zone,
the movement of the joint outside the active
zone will always be performed in the passive
mode.
Example of a range of motion smaller than
the preset active zone:
Set range of motion: 0° / 10° / 60°
Set active zone: 0° / 0° / 90° (maximum setting)
True active zone: 0° / 15° / 55°
Extension force: 10 kg
Flexion force: -5 kg
This is what the settings mean:
Although the active zone is larger than the
current range of motion, the patient will only be
able to actively exercise within the set range of
motion. This is meant to protect the patient.
Within the active zone of 0° / 15° / 55°, the pa-
tient in order to initiate a movement is required
to push in the extension direction against an ad-
ditional 10 kg (+/-20%). In the flexion direction,
in order to initiate a movement, the patient is
required to pull a weight of 5 kg (+/- 20%).
Example of a range of motion greater than
the preset active zone:
Set range of motion: 5° / 0° / 110°
Set active zone: 0° / 0° / 90° (maximum setting)
True active zone: 0° / 0° / 90°
Extension force: 10 kg
Flexion force: -5 kg
This is what the settings mean:
Active exercising is only possible in the range
between 0° and 90°. Outside this range, the joint
is moved in the passive mode.
Within the active zone of 0° / 0° / 90°, the patient
in order to initiate a movement is required to
push in the extension direction against an ad-
ditional 10 kg (+/-20%). In the flexion direction,
in order to initiate a movement, the patient is
required to pull a weight of 5 kg (+/- 20%).
This is the symbol for the CAM mode:
Supplied by EME Services Ltd