Netti Dynamic System Leg support Bedienungsanleitung

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DYNAMIC SYSTEM

COMFORT

USER MANUAL AND

MOUNTING DESCRIPTION

Netti Dynamic System Leg support

nDUAL

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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

dierent 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

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 con-

trolled 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 resist-

ance. OK-C helps to gain control of the

proximal segments, especially when

the user cannot inhibit muscle move-

ments 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 wheel-

chair users with involuntary move-

ments. Examples of involuntary move-

ments 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 di-

agnosis 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 dierently - tilting the

footboard sideways and also tilting it

forwards.

This multitude of possible ﬂexible

movements - gives the user freedom

to perform voluntarily and involun-

tarily 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. Un-

like 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 move-

ments of the lower extremities

must use Netti Dynamic DUAL

Leg Supports.

Netti Dynamic System leg support

DUAL allows for dynamic:

nPlantar ﬂexion of the feet (leg

support pivots anteriorly)

nUnilateral extension of the hip

(single leg support goes down)

nKnee extension: (leg supports

move forwards)

When tone decrease, the lower

extremities will be supported to-

wards their resting position.

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Model: Netti Dynamic Leg support

Language: English Version: 2017-05

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 pro-

duct range ﬁts to dierent seat widths.

Sizes and item numbers:

see table on page 15.

Netti Dynamic DUAL leg support is

especially developed to allow for un-

even 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

oered in 2 dierent 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 sup-

port 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 involun-

tarily 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 ﬁx-

ing 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

zThe 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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Model: Netti Dynamic Leg support

Language: English Version: 2017-05

4.1 LEG support length adjust-

ments

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 Vel-

cro. 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 pres-

sure 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: Foot-

board height adjustment

Loosen the M6 screws holding the leg

support length-proﬁle on the outside

with 5 mm Allen key. Adjust the foot-

board 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 tilt-

ing the seating unit may help. If not

sucient, 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 ad-

justed:

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 sup-

ports should in addition to supporting

the calf also help prevent the feet slid-

ing 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 sup-

port is angled. The calf pads can swing

freely to follow the movements and

adjust to the user’s leg position.

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