Quest 88 Tiny Trekker User Manual - page 6
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6
7. Adjustments
7.1 Centralising the user
In order to ensure the stability of the frame when in use, it is necessary for the user to be
positioned centrally in the frame.
7.2 Setting the overall height
N.B. Refer to the table on the rear page for the maximum height settings for each size of
frame. It is crucial that these values are not exceeded.
Height adjustment is achieved by releasing the hand-wheel “A” and extending the top
sections of tubing (see step 1). Note that maximum height marks are to be found on
these tubes which indicate the limit of adjustment. Re-tighten hand-wheel “A” after
positioning.
a) Measure the height of the patient from heel of shoe or orthosis (if worn) to 50mm below
the axilla.
b) Set the overall height of the Trekker and Tiny Trekker (measured to the top edge of the
chest support) to this dimension. Ensure that both hand-wheels are fully tightened after
positioning.
7.3 Hip rail adjustment
The anterior hip rail is positioned by first releasing the M5 hexagon head socket screws
which allow both height, forward, and backward adjustment. The height to the bottom
edge of the hip rail should be approximately 25mm above the Greater Trochanter (hip
flexion crease). The position forward and backward should allow approximately 5° hip
flexion in the standing position. The posterior pelvic strap should hold the patient firmly
against the hip rail. Re-tighten the M5 hexagon head socket screws.
STEP
1
Overall
height setting
STEP
1
Hip Rail
Hand-wheel A
4mm Hex/Allen Key
7. Adjustments
7.4 Setting the angle and width of the Chest and Hip supports
The chest support will normally be fitted in a horizontal position during manufacture but it
may be tilted to improve comfort for the user by releasing M6 hexagon head socket screws
as shown below. After re-positioning, re-tighten the M6 hexagon head socket screws.
Note: If it is found necessary to alter the position of the chest support then the previous
adjustments to chest support height and hip rail height may need to be changed.
The chest support can be adjusted by releasing the clamping blocks as shown. It should
be wide enough to allow small medio-lateral movements to aid weight transference when
walking, but not too wide to allow excessive and unwanted trunk movements. Thus,
depending on the size of the patient, a chest pad may also need to be the fitted for
additional cushioning when supplied to the patient.
The hip support can be adjusted by releasing the screws on the clamping blocks. The hip
support should be wide enough to allow small medio-lateral movements to aid weight
transference, but not too wide to allow excessive and unwanted trunk movements.
The fabric coverings for the chest and hip support can now be replaced.
7.5 Abduction pommel support
The height, forward, and backward position of abduction pommel can be adjusted by
releasing the indexing lever and plunger hand-wheel. Re-tighten the plunger hand-wheel
and indexing lever after positioning.
STEP
2
Chest/Hip support adjustment
STEP
1
Height adjustment
STEP
2
Forward/backward adjustment
Width adjustment screws (M5)
Indexing lever
Plunger hand-wheel
STEP
1
Chest/Hip support adjustment
Angle adjustment screws (M6)