Otto Bock 3R60-PRO HD, Инструкция по эксплуатации

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Ottobock | 21 3R60-PRO, 3R60-PRO=ST, 3R60-PRO=KD, 3R60-PRO=HD
• For swing phase, adjust flexion resistance first and then adjust extension resistance (see Sec-
tion 4.3.2.3).
4.3.2.1 Stance phase stability by positioning the joint (Fig. 5+6)
Contrary to single-axis knee joints, polycentric knee joints are stable at heel strike. In the EBS
PRO
Knee Joint, stance flexion adds additional stance phase stability. At the factory, the EBS
PRO
unit is
adjusted to provide medium resistance. Initiation of swing flexion and thus the stability at heel strike
depends on the position of the joint and thus of the location of the instantaneous center of rotation.
Tipping the joint in the sagittal plane (changing the angle using the adjustment screws) can be used
to determine the location of the center of rotation and thus to vary the degree of stability.
Insufficient stance phase
stability
(knee joint buckles)
=
instantaneous center
of rotation (ICR) too
far anterior
Tip the joint back-
ward
using the adjust-
ment screws
(Fig. 5)
Stance phase stability too
great
(swing phase can only be
initiated with a great deal
of effort)
=
instantaneous center
of rotation (ICR) too
far posterior
Tip the joint forward
using the adjustment
screws
(Fig. 6)
Any adjustments performed above the joint must be corrected by corresponding counter-adjustments
below the joint, in order to maintain the position of the foot.
Attention!
The =KD and =ST connection systems require another way of proceeding during manu-
facture of the prosthesis. Stance phase stability and initiation of flexion depend on the
position of the lamination anchor. Later readjustment of the prosthesis in the sagittal
and frontal planes is not possible!
4.3.2.2 Adjusting the stability of the elastic footfall
The degree of elastic stance flexion resistance may be adapted by adjusting the EBS
PRO
unit with
the adjustment nut. To do this, insert 710H10=2x3 Adjustment Wrench provided with the knee into
the hole (Fig. 7).
Rotation to the left
(in - direction)
= decreased
resistance
= easier knee
flexion
= strong raising of the
pivoting mount (Fig. 3b)
= increased
stance
stability
Rotation to the right
(in + direction)
= increased
resistance
= less knee
flexion
= slight raising of the
pivoting mount (Fig. 3a)
= decreased
stance
stability
Attention!
If the maximally adjustable resistance of the EBS unit is insufficient (knee flexion too
easy), possibly tip the joint forward (see Section 4.3.2.1), but be aware that knee sta-
bility is reduced by this measure.
4.3.2.3 Adjusting the damping for swing phase control
The hydraulic swing phase control ensures a smooth gait. Movement resistances prevent the pros-
thetic lower leg from swinging too far when flexing and guarantee dampened extension. Along with