Invacare Spyder 1098318 - Manual (Page 10)

10
Functional Reach From a Wheelchair
The approximate reach-limit values shown in the accom-
panying graph were derived on the basis of a sample of
91 male and 36 female wheelchair users. Note the differ-
ence between the maximum and the comfortable reach
limits, a subjective but important consideration in design.
FORWARD REACH
(ADULTS)
COMFORTABLE MAXIMUM
0 8 16 24 37 40 48
72
64
61
56
53
48
42
40
32
29
25
16
8
0
INCHES
INCHES
Many activities require the wheelchair user to reach,
bend and transfer in and out of the wheelchair. These
movements will cause a change to the normal bal-
ance, the center of gravity, and the weight distribu-
tion of the wheelchair. To determine and establish
your particular safety limits, practice bending, reach-
ing and transferring activities in several combina-
tions in the presence of a qualified healthcare pro-
fessional BEFORE attempting active use of the
wheelchair.
Proper positioning is essential for your safety. When
reaching, leaning, or bending forward, it is important
to use the front casters as a tool to maintain stability
and balance.
LENGTHENING THE WHEELBASE will increase
the stability and maintain standard maneuverability
of the wheelchair.
SHORTENING THE WHEELBASE will increase
the maneuverability and distribute additional weight
onto the rear wheels.
Example 46% 54% 103 lbs. 130 lbs.
UNOCCUPIED OCCUPIED
Rear of
Wheelchair
LENGTHENING
THE
WHEELBASE
SHORTENING
THE
WHEELBASE
G
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N
E
R
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L
G
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D
E
L
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E
S
PROCEDURE 1 GENERAL GUIDELINES
Axle Mounting
Plate
REACHING, LEANING AND BENDING -
FORWARD.
Position the front casters so that they are extended as far
forward as possible and engage wheel locks.
WARNING
DO NOT attempt to reach objects if you
have to move forward in the seat or pick
them up from the floor by reaching down
between your knees.