MK-100074 Rev. B
4
J A Y CU SH I O NS
USE AND MAINTENANCE
THE JAY
®
GS CUSHION
The JAY GS Growth and Positioning Cushion is designed to pro-
vide a high degree of comfortable postural support and to meet
the changing needs of growing individuals.
To ensure proper use of the cushion, please read these instruc-
tions and save them for future reference. It is recommended that
the fitting of the JAY GS Cushion take place under the supervision
of a doctor or therapist.
Maximum user weight:
10" to 18" width = 350 lbs.
A. FITTING THE JAY GS CUSHION
Place the Cushion on the seat of the wheelchair.
(A solid base of support, like the JAY Adjustable Solid Seat or
Solid Seat Insert is recommended.) If using an adjustable depth
back on the wheelchair, position the back of the Cushion even
with the front of the upright back posts. If using a fixed depth
back, notch the rear corners of the base to establish seat depth to
within 1" (2.5 cm) from the back of the knees (see score lines on
base). This will allow the back of the Cushion to go between the
posts. Place the individual on the Cushion allowing the user to sit
in the rear, carved-out portion and the legs to rest comfortably on
the raised front portion.
Additionally, the footrests should be adjusted low enough to allow
the legs to rest firmly on the front of the Cushion. The Cushion
should come within 0 - 1" (0-2.5 cm) of the back of the knee.
Assess the client. Are the hips level? Are the legs in good posi-
tion? Is the client comfortable? If the answer to any of these ques-
tions is “no,” see the Accessories section in this booklet.
B. HOW THE JAY GS CUSHION GROWS
The JAY GS Cushion grows by maintaining the positional relation-
ship between the user and the cushion. As the client grows, the
area under the buttocks remains roughly the same, while the area
under the legs grows backward. Using the Pre-ischial Shelf
Extender (see diagram on next page) will increase leg support and
position the anti-thrust shelf where needed.
C. GROWING THE CUSHION WITH A -DEPTH
ADJUSTABLE BACK
Begin by seating the client forward on the Cushion (with the Back
adjusted forward of the upright posts.) As the client grows, adjust
the Back Support backwards toward the posts. This allows the user
to be seated further back in the well and maintain proper seat depth.
Pre-Ischial Shelf Extenders can be added to position the anti-thrust
shelf where needed and optimize leg support. (The ischial tuberosi-
ties, or seat bones, should be located approximately 1" to 2" (2.5 to
5 cm) behind the anti-thrust shelf.) One Shelf Extender is included
with the cushion. (Others can be ordered as needed.) The Cushion
“grows” by 1" (2.5 cm) every time a Shelf Extender is added.* When
the Back has been adjusted as far back as possible, the Cushion can
be moved forward for additional growth.
The front edge of the GS Cushion can extend up to
2" (5 cm) unsupported beyond the front of the seat base without
affecting performance. The use of a JAY Adjustable Solid Seat with
Lip Option is recommended when “growing” the GS Cushion in
this way. You can easily relocate the cushion in its desired posi-
tion if you remove it from the wheelchair.
D. GROWING THE CUSHION WITH A -FIXED BACK
Notch the rear corners of the base enough to allow the Cushion
to slide between the upright posts of the wheelchair and to estab-
lish proper seat depth (approximately one to two finger widths
between the back of knee and front of cushion).
As the client grows, adjust the Cushion forward (always allowing
the buttocks to sit in the carved-out portion of the cushion).
Remember to maintain the desired distance between the back of
the knee and the front of the Cushion. When the Cushion is
adjusted forward by 1" (2.5 cm) or more*, add a Pre-ischial Shelf
Extender to the cushion (included). This will maintain the anti-
thrust properties of the GS Cushion.
The front edge of the GS Cushion can extend up to 2" unsupport-
ed beyond the front of the seat base without affecting perform-
ance. The use of a JAY Adjustable Solid Seat with lip option is
highly recommended when “growing” the GS Cushion in this way.
It allows you to easily relocate the cushion in its desired position
if you remove it from the wheelchair.
Adjusting the width of the Cushion is made easy through the use
of accessories. Lateral Pelvic Supports (hip guides) can be adjusted
inward 1" (2.5 cm) on either side and then moved out later for
growth at the rear of the Cushion. Lateral Thigh Supports (abduc-
tors) can be adjusted inward 1" on either side and then moved
out later for growth at the front of the Cushion.
NOTE -
The JAY GS Cushion may be used with different backs
depending on the level of disability. Growth in the seating sys-
tem is possible with all of the above products when combined
with the GS Cushion.
JAY GS Cushion
Pre-ischial
Shelf Extender
JAY Adjustable Solid Seat with Lip Option
