My-Netti.com
DYNAMIC SYSTEM
COMFORT
USER MANUAL AND
MOUNTING DESCRIPTION
Netti Dynamic System Leg support
n DUAL
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
CONTENTS
1. Introduction to Netti Dynamic
Leg supports 3
2. Netti Dynamic leg supports DUAL 4
3. Daily use of Netti Dynamic
leg supports.
3.1 Mounting the leg supports 7
3.2 Ankle huggers 7
3.2 Footplate lock 8
4. Adjusting the Dynamic leg support
to the user:
4.1 Leg support length
adjustments 9
4.2 Netti Dynamic DUAL
Footboard height
adjustment 10
5. Calf pad adjustments
5.1 Netti Dynamic DUAL
calf height 10
5.2 Netti Dynamic DUAL
calf depth 11
5.3 Locking the Netti Dynamic
DUAL leg supports 11
6. Footplate angle adjustments
6.1 Netti Dynamic DUAL
footplate angle 12
7. Netti Dynamic leg supports for
dierent leg lengths
7.1 Onesided footboard depth
adjustment 13
8. Chair widths, leg support
heights and fabric for
Netti Dynamic DUAL 15
9. Transport 16
10. Maintenance 16
11. Troubleshooting 17
12. Warranty 17
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
1. INTRODUCTION TO NETTI DYNAMIC LEG
SUPPORTS
THE CONCEPT: NETTI DYNAMIC SYSTEM
WHAT IS NETTI DYNAMIC
SEATING?
Netti Dynamic System is a tilt and
recline wheelchair which allows controlled Open Kinetic Chain (OK-C)
movements of the user. Static comfort
wheelchairs can be accommodated
to support the user’s distal segments.
The controlled OK-C movement has
an extra impact: The distal segments
can move, with a moderate resistance. OK-C helps to gain control of the
proximal segments, especially when
the user cannot inhibit muscle movements due to their medical condition.
Before using Netti Dynamic System
(NDS) or any of its components, a
seating assessment should be carried
out by a trained professional.
Typically Netti Dynamic System or its
components may be used for wheelchair users with involuntary movements. Examples of involuntary movements are:
- Dystonia (involuntary, sustained
or intermittent muscle contractions
that can cause twisting and repeti tive movements, abnormal posture
or both. Muscle tone varies from
normal or hypotonia to hypertonia.
- Athetosis (slow, involuntary writh ing movement)
- Chorea (brief, irregular jerking
movements)
- Tremor (This is a rhythmic move ment of part of the body)
- Hemiballism (These are wild fling ing/throwing movements of one
arm or leg, usually occurring as a
result of a cerebrovascular event)
- Clonus (rapid muscle jerks that are
frequently repetitive)
A more detailed description of diagnosis and Netti Dynamic product
recommendations is described in the
User Manual of the total Netti Dynamic
System
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
2. NETTI DYNAMIC
DUAL FEATURES
Netti Dynamic leg support DUAL is
especial designed for users pushing
with uneven force with their lower
extremities providing open kinetic
chain.
The gas cylinders works independent
and allows for the leg supports to
be extended dierently - tilting the
footboard sideways and also tilting it
forwards.
This multitude of possible flexible
movements - gives the user freedom
to perform voluntarily and involuntarily leg movements to very high
degree.
When the extension forces are
reduced, the gas cylinders gently
brings the feet and legs back to the
original foot position.
The wear and tear on the wheelchair
is substantially reduced since the
forces applied, are absorbed by the
flexible system.
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
Functional overview
The Netti Dynamic leg supports
allow controlled Open Kinetic
Chain (OKC) movements of the
lower extremities of the user. Unlike static wheelchairs, the user’s
distal segments are supported
but can move. This helps to gain
control of the proximal segments
especially when the user cannot
inhibit movements due to their
medical condition.
Warning: users with uneven movements of the lower extremities
must use Netti Dynamic DUAL
Leg Supports.
Netti Dynamic System leg support
DUAL allows for dynamic:
n Plantar flexion of the feet (leg
support pivots anteriorly)
n Unilateral extension of the hip
(single leg support goes down)
n Knee extension: (leg supports
move forwards)
When tone decrease, the lower
extremities will be supported towards their resting position.
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Model: Netti Dynamic Leg support
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Leg support adjustments need to
be adjusted for each user in order to
meet the unique user needs.
Warning: The adjustment should be
carried out by a trained professional
The Netti Dynamic leg supports product range fits to dierent seat widths.
Sizes and item numbers:
see table on page 15.
Netti Dynamic DUAL leg support is
especially developed to allow for uneven forces from the legs. Unilateral
extension of the hip (left or right part
of the leg support goes down)
Netti Dynamic DUAL leg support is
oered in 2 dierent lengths.
Netti Dynamic DUAL short leg support
lengths suits persons with lower leg
length from circa 350 mm up to
approximately 500 mm (measured
when knees are 90° flexed, from
underneath the thigh to under the heel
- inclusive normal shoes).
Netti Dynamic DUAL normal leg support lengths suits persons with longer
than 500 mm lower legs. See table
and sizes on page 15 of this User
Manual.
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
3. DAILY USE
3.1 Mount the leg supports
to the wheelchair. Ensure an open angle
of the leg support when inserting:
Position the bolt
vertical into the frame hole
turning it ca 30 degrees outward for
it to enter easy. Turn it inward until it
clicks into user position.
With the footboard folded up, there is
free space for transfers.
The footboard folds down from the left
and is locked to the right side; this
gives a sturdy platform for the feet.
3.2 Ankle huggers
The footboard has holes prepared for
ankle huggers or shoe shells to be
mounted as accessories if required.
Ankle huggers are useful when involuntarily leg movements slide the feet of
the footboard.
Ankle huggers are mounted to the
footboard by threading the fixing belts
through the holes in the footboard fixing them with buckles on the underside
of the footboard.
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!
LOCK
Model: Netti Dynamic Leg support
Language: English Version: 2017-05
3.3 Footplate lock
With both leg supports in place,
the footboard folds down into the lock
on the right leg support.
Lock
z The lock is closed by turning the
outer ring 90 degrees forward!
Warning: The footboard lock MUST
always be closed when the chair is
occupied.
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F
Model: Netti Dynamic Leg support
Language: English Version: 2017-05
4.1 LEG support length adjustments
Measure the user’s lower leg length F 90 degrees bent knee - measure from
underside thigh to underside heel of
shoe.
The centre joint of the leg support is
hidden under the knee-joint upholstery.
The illustration with removed upholstery
shows the leg support knee-joint centre
which is to be at the same level as the
knee-joint of the user. Adjust the length
of the leg support according to the leg
length measured.
NB! Correct seat depth:
Loosen the Velcro straps of the back
support. Check that the user is getting
into the chair firmly. Adjust the back
support by pulling the straps of the Velcro. The knees of the user should align
with the joint of the leg support both in
height and in depth. This will ensure that
the user gets a good support and pressure distribution under the thighs.
Seat depth can be adjusted. Extension
pieces allow for increasing the seat
depth in the front. Chair-back hinge
can be repositioned to adjust seat depth
backwards. Consider wheelchair balance.
See further information to seat depth
adjustment in wheelchair user manuals.
4.2 Netti Dynamic DUAL: Footboard height adjustment
Loosen the M6 screws holding the leg
support length-profile on the outside
with 5 mm Allen key. Adjust the footboard to a height from top of front edge
seat cushion to the footboard equal to
the lower leg length - F dimension.
4. ADJUSTING THE NETTI
DYNAMIC LEG SUPPORT
TO THE USER
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
Make sure there is enough free space
under the footboard for the wheelchair
to pass minor obstacles. Slightly tilting the seating unit may help. If not
sucient, the chair height must be
adjusted as described in the main user
manual for the wheelchair model.
5. CALF SUPPORTS
ADJUSTMENTS
With both leg supports in correct
height, the calf supports must be adjusted:
5.1 Netti Dynamic DUAL: Calf
support height adjustment:
Loosen the two M6 screws with
5 mm Allen key - on the half-moon
brackets - holding the calf pad arm.
This allows the calf support-pad arm
to move up and down. The calf supports should in addition to supporting
the calf also help prevent the feet sliding backwards from the footboard.
Choose a height covering the middle
and lower part of the user’s calf and
tighten the screws.
Twist the calf pads to an angle giving
support for the leg when the foot support is angled. The calf pads can swing
freely to follow the movements and
adjust to the user’s leg position.
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
5.2 Netti Dynamic DUAL:
Calf support depth adjustment
Loosen the M8 screw holding the calf
pad on the calf pad arm with
2 pc 13 mm spanner and slide the
calf pad in or out to desired depth the calf pad barely touching the calf
while the feet are standing on the
middle of the foot board.
They should in addition to supporting the calf also help prevent the
feet sliding backwards from the footboard.
5.3 Locking the Netti
Dynamic DUAL leg support
The red knobs allow locking the dynamic elevation of the leg support
plate. For the dynamic use of the
Netti Dynamic System (OK-C) this
should be kept loose to allow for the
knee joint to move (“OK-C movement” for the knee joint).
Locking the leg support may be
required if sudden extension may
lead the leg supports to hit persons
or surrounding.
It is also required if the wheelchair is
being used as a seat in a car. .
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
6. FOOTPLATE
ANGLE
ADJUSTMENTS
6.1 Netti Dynamic DUAL
footboard angle adjustment
Loosen the M8 screw on the left foot
board with 6 mm Allen key. This
allows the footboard to rotate.
Choose a footboard angle to accommodate the user’s foot angle. Fix the
screws tightly so that the footboard
does not move.
Please note that the DUAL footboard
still allow for some rotation forward
to flex when the user extends his/ her
feet.
Please note - lubrication of the gliding
length profiles with white Vaseline is
important to ensure smooth function
of the Netti Dynamic System Leg supports DUAL.
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
7.1 One-sided footboard
depth adjustment
By uneven leg length or leg position:
The leg support and footboard depth
can be adjusted to compensate for
this by the use of extensions pieces
and extension bracket on the right
leg support.
The extension piece is pulled forward
and fixed in needed length on the
side where the leg is longer.
The leg support sits in the extension
piece and is therefor also moved forward.
For the footboard to fall into the
footboard lock after one sided extension piece adjustment, the footboard
has to be repositioned.
The footboard lock
is removed from the length profile
where it normally sits - and mounted
to the extension bracket.
The extension bracket is mounted
to the length profile where the lock
was sitting.
7. NETTI
DYNAMIC LEG
SUPPORTS
FOR DIFFERENT
LEG LENGTHS
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
Fix the extension bracket with 2 M6
screws with 5 mm Allen key through
the length profile into 2 nuts.
Fix the footboard lock with one M8
screw with 6 mm Allen key.
This picture shows the bracket
reaching forward, allowing for longer
left leg where the right leg support
and calf pad has to go backwards:
- suiting a user with shorter
right leg.
This picture shows the bracket
reaching backwards, allowing for
longer right leg where the right leg
support and its calf pad go forwards:
- suiting a user with longer right leg.
All mounting illustrations are showed
for Netti Dynamic PARALLEL.
The mounting procedure for Netti
Dynamic DUAL is similar.
Extension platform kit for DUAL
leg support: 82940 and 82941.
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Chair
width
Leg support adj. R
3D fabric
Leg support adj. L
3D fabric
Foot board *A
(height 20cm)
Calf pad
Item no.
350 mm
82856
82857
82872
82862
82907
380 mm “ “
82873
82862
82908
400 mm “ “
82874
82863
82909
430 mm “ “
82875
82863
82910
450 mm “ “
82876
84864
82911
500 mm “ “
82877
82865
82912
Chair
width
Leg support adj. R
3D fabric
Leg support adj. L
3D fabric
Foot board *B
(height 30cm)
Calf pad
Item no.
350 mm
82856
82857
82880
82862
82915
380 mm “ “
82881
82862
82916
400 mm “ “
82882
82863
82917
430 mm “ “
82883
82863
82918
450 mm “ “
82884
84864
82919
500 mm “ “
82885
82865
82920
Chair
width
Leg support adj. R
Easy care fabric
Leg support adj. L
Easy care fabric
Foot board *A
(height 20cm)
Calf pad
Item no.
350 mm
82858
82859
82872
82862
82923
380 mm “ “
82873
82862
82924
400 mm “ “
82874
82863
82925
430 mm “ “
82875
82863
82926
450 mm “ “
82876
84864
82927
500 mm “ “
82877
82865
82928
Chair
width
Leg support adj. R
Easy care fabric
Leg support adj. L
Easy care fabric
Foot board *B
(height 30cm)
Calf pad
Item no.
350 mm
82858
82859
82880
82862
82931
380 mm “ “
82881
82862
82932
400 mm “ “
82882
82863
82933
430 mm “ “
82883
82863
82934
450 mm “ “
82884
84864
82935
500 mm “ “
82885
82865
82936
Model: Netti Dynamic Leg support
Language: English Version: 2017-05
8. CHAIR WIDTHS, HEIGHTS AND FABRIC
FOR NETTI DYNAMIC DUAL LEG SUPPORT:
For definition of correct footboard height, measure lower leg length with normal shoes and reduce it with seat cushion thickness. If it is shorter than 450 mm
choose footboard height 200 mm. If it is longer than 450 mm choose footboard
height 300 mm.
*A) Footboard height 200 mm:
The distance between footboard and seat plate is minimum 300 mm up to 450 mm.
*B) Footboard height 300 mm:
The distance between footboard and seat plate is minimum 450 mm up to 600 mm.
For wheelchairs with seat widths 500 mm and more the reinforced extension
brackets for fixing the leg supports must be mounted.
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
9. TRANSPORT
Wheelchairs with Netti Dynamic System
Leg support can be used as seat in a
car if the wheelchair model has been
tested and approved to ISO 7176-19.
Please, follow the description for fixing
the chair and the user as described in
the User manual for the wheelchair.
The Netti Dynamic Leg support has to
be locked when the wheelchair is used
as a seat in a car.
10. MAINTENANCE
All wheelchairs equipped with Netti
Dynamic System will require special attention to maintenance compared with
wheelchairs without dynamic system,
due to the heavy and strong use.
Follow the wheelchair maintenance
description in the wheelchair User
Manual and pay special attention to
tightening all screws and inspecting all
joints.
Inspect the belts and harnesses on tear
and wear. Replace if necessary.
Netti Dynamic System Leg
support - Lubrication
Please note - lubrication of the gliding
length profiles with white Vaseline - is
important to ensure smooth function of
the Netti Dynamic System Leg supports.
In some cases sound can occur from the
moving parts if they are not regularly
lubricated.
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
11. TROUBLE-
SHOOTING
Please study the recommendations in
the User Manual for the wheelchairs
where the Netti Dynamic System leg
support is mounted - for instance:
Netti III HD ( Netti Dynamic III HD)
Netti 4U CED ( Netti Dynamic CED)
Netti Mobile ( Netti Dynamic Mobile)
etc.
12. TESTS &
WARRANTY
The guarantee claims stated in the User
Manual for the wheelchair also applies
for wheelchairs with Netti Dynamic System when the Netti Dynamic System or
parts are mounted and adjusted for the
user under supervision of a Netti
Dynamic System certified person.
Contact your local dealer if you have
questions regarding certified persons for
Netti Dynamic System.
Updated data about the wheelchair and
the Netti Dynamic System is found on
www.My-Netti.com
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
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Model: Netti Dynamic Leg support
Language: English Version: 2017-05
Alu Rehab AS
Bedriftsvegen 23
4353 Klepp Stasjon
NORWAY
T: +47 51 78 62 20
post@My-Netti.com
My-Netti.com
Alu RehabApS
Kløftehøj 8
DK-8680 Ry
DANMARK
T: +45 87 88 73 00
F: +45 87 88 73 19
info@My-Netti.com
IN DIALOGUE WE CREATE
SIMPLE SOLUTIONS AND
ENABLE JOY OF LIFE
This product conforms to
93/42/EEC for medical products.
2017-05
UM0115UK
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