FIOR & GENTZ NEURO CLASSIC zero User manual

EN
Download: www.or-gentz.com
Instructions for Use for Orthotists or Qualied/
Trained Experts System Knee Joints
zero
NEURO CLASSIC zero
NEURO VARIO zero
NEURO CLASSIC
NEURO VARIO
NEURO VARIO 2
NEURO VARIO-SWING
zero

2
Druckdatum: 2020-12
Sie finden diese Gebrauchsanweisung im Download-Bereich unserer Website unter www.fior-gentz.de/downloads.
Date printed: 2020-12
You can find these instructions for use in the download section on our website at www.fior-gentz.com/downloads.
Remarque:
Vous trouverez cette notice d’utilisation dans la zone de téléchargement sur notre site web sous www.fior-gentz.de/fr/telechargements.
Nota:
Le presenti istruzioni per l'uso sono disponibili nell'area download del nostro sito all'indirizzo www.fior-gentz.com/downloads.
Nota:
Puede encontrar estas instrucciones de uso en el área de descargas de nuestro sitio web en www.fior-gentz.com/downloads.
Aanwijzing:
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Merk:
Du finner denne bruksanvisningen i nedlastingsområdet på vår nettside under www.fior-gentz.de/downloads.
メ モ：
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Content Page
EN
Instructions for Use for Orthotists or Qualified/Trained Experts System Knee Joints 5
1. Information 5
2. Safety Instructions 5
2.1 Classification of the Safety Instructions 5
2.2 All Instructions for a Safe Handling of the System Knee Joint 5
3. Use 7
3.1 Intended Use 7
3.2 Indication 7
3.3 Qualification 7
3.4 Application 7
3.5 Product Range 8
3.6 Combination Possibilities with Other System Joints 8
4. Joint Function 9
5. Scope of Delivery 10
6. Load Capacity 10
7. Tools for Assembling the System Joint 10
8. Assembly Instructions 11
8.1 Mounting the Extension Stop NEURO VARIO zero and NEURO VARIO 11
8.2 Mounting the Cover Plate 11
8.3 Checking the System Joint's Free Movement 12
8.4 Mounting the Extension Stop Dampers and the O-Ring Damper 12
8.5 Mounting the Alignment Screw NEURO VARIO 2 12
8.6 Mounting the Spring Unit NEURO VARIO-SWING 13
8.7 Securing the Screws 13
9. Adjustment Options on the Orthosis 14
9.1 Adjustment of the Orthosis Alignment via the Extension Stop NEURO VARIO zero 14
and NEURO VARIO
9.2 Adjustment of the Orthosis Alignment via the Extension Stop NEURO VARIO 2 14
9.3 Adjustment Options for NEURO VARIO-SWING 14
10. Mounting to the System Side Bar/System Anchor 15
11. Converting the System Knee Joints 16
11.1 Converting Options 16
11.2 Conversion 16
12. Maintenance 17

4
12.1 Documentation of Maintenance in the Orthosis Service Passport 18
12.2 Maintenance of the Disc Springs NEURO VARIO-SWING 18
12.3 Replacing the Sliding Washers 18
12.4 Dirt Removal 18
13. Period of Use 18
14. Storage 19
15. Spare Parts 19
15.1 Exploded View Drawing NEURO VARIO zero 19
15.2 Exploded View Drawing NEURO VARIO 2 20
15.3 Exploded View Drawing NEURO VARIO-SWING 20
15.4 Spare Parts for the NEURO CLASSIC zero System Knee Joint 21
15.5 Spare Parts for the NEURO VARIO zero System Knee Joint 23
15.6 Spare Parts for the NEURO CLASSIC System Knee Joint 25
15.7 Spare Parts for the NEURO VARIO System Knee Joint 27
15.8 Spare Parts for the NEURO VARIO 2 System Knee Joint 29
15.9 Spare Parts for the NEURO VARIO-SWING System Knee Joint 30
15.10 Spare Parts for Spring Units 31
15.11 Sliding Washers 31
16. Disposal 32
17. Signs and Symbols 32
18. CE Conformity 32
19. Legal Information 32

5
Instructions for Use for Orthotists or Qualified/Trained Experts System Knee Joints
1. Information
These instructions for use are addressed to orthotists or qualified/trained experts and do not contain any notes
about dangers which are obvious to them. To achieve maximum safety, please instruct the patient and/or care
team in the use and maintenance of the product.
2. Safety Instructions
2.1 Classification of the Safety Instructions
DANGER Important information about a possible dangerous situation which, if not avoided,
leads to death or irreversible injuries.
WARNING
Important information about a possible dangerous situation which, if not avoided,
leads to reversible injuries that need medical treatment.
CAUTION Important information about a possible dangerous situation which, if not avoided,
leads to light injuries that do not need medical treatment.
NOTICE Important information about a possible situation which, if not avoided, leads to
damage of the product.
All serious incidents according to Regulation (EU) 2017/745 which are related to the product have to be
reported to the manufacturer and to the competent authority of the Member State in which the orthotist or
qualified/trained expert and/or the patient is established.
2.2 All Instructions for a Safe Handling of the System Knee Joint
DANGER
Potential Trac Accident Due to Limited Driving Ability
Advise the patient to gather information about all safety and security issues before driving a motor vehicle
with orthosis. The patient should be able to drive a motor vehicle safely.
fig. 37
For a simplified illustration, all basic work steps are shown with the
NEURO VARIO zero system knee joint (fig. 1) as example.
They can be transferred to all mentioned system joints.

6
WARNING
Risk of Falling Due to Improper Handling
Inform the patient about the correct use of the system joint and potential dangers especially with regards
to:
- moisture and water as well as
- excessive mechanical stress (e.g. due to sports, increased activity or weight gain).
WARNING
Risk of Falling Due to Improper Processing
Process the system joint according to the information in these instructions for use. Deviating processing
and modifications of the system joint require the written consent of the manufacturer.
WARNING
Risk of Falling Due to Loosened Screws
Mount the cover plate to the system joint according to the assembly instructions in these instructions for
use. Secure the screws with the specified torque and the corresponding adhesive and make sure that no
sliding washers are damaged in the process.
WARNING
Risk of Falling Due to Incorrectly Selected System Components
Make sure that the system joint and the system components are not overloaded and are functionally adapt-
ed to the requirements and needs of the patient in order to avoid joint dysfunction.
WARNING
Risk of Falling Due to Permanent Higher Load
If patient data has changed (e.g. due to weight gain, growth or increased activity), recalculate the expected
load on the system joint, plan the treatment again and, if necessary, produce a new orthosis.
WARNING
Risk of Falling Due to Improper Shoe/Wrong Shoe Pitch
Advise the patient to wear a shoe to which the orthosis is adjusted in order to avoid joint dysfunction.
WARNING
Damage to the Anatomical Joint Due to Incorrect Position of the Joint’s Mechanical Pivot Point
Determine the joint’s mechanical pivot points correctly in order to avoid a permanent incorrect load on the
anatomical joint. Please refer to the online tutorials on our website or contact Technical Support.
WARNING
Jeopardising the Therapy Goal by Not Providing the Necessary Free Movement
Check if the system joint moves freely in order to avoid restrictions of the joint function. Use suitable
sliding washers according to the information in these instructions for use.

7
NOTICE
Limitation of the Joint Function Due to Improper Processing
Errors in processing can impair the joint function. Pay particular attention to:
- correctly connect the system side bar/system anchor with the system case in accordance with the pro-
duction technique;
- grease the joint components only slightly and
- adhere to the maintenance intervals.
NOTICE
Limitation of the Joint Function Due to Improper Dirt Removal
Inform the patient on how to properly remove dirt from the orthosis and the system joint.
NOTICE
Limitation of the Joint Function Due to Lack of Maintenance
Respect the specified maintenance intervals in order to avoid joint dysfunction. Inform the patient about
the maintenance appointments to be respected. Enter the next maintenance appointment in the orthosis
service passport of the patient.
3. Use
3.1 Intended Use
The FIOR & GENTZ system knee joints are exclusively for use for orthotic fittings of the lower extremity. The
system joint provides motion control and is only allowed to be used for producing a KAFO. Every system joint
influences the orthosis’ function and thus also the function of the leg. Depending on the type of orthotic
treatment and the patient’s individual physical abilities, driving a motor vehicle safely should be guaranteed.
The system joint may only be used for one fitting and must not be reused.
The NEURO CLASSIC zero and NEURO VARIO zero system knee joints can also be mounted to knee
orthoses (KO), if articulated side bars with polycentric knee joints are overloaded.
3.2 Indication
The indication for the treatment with an orthosis for the lower extremity is a pathological gait. This can be
caused, for example, by central, peripheral, spinal or neuromuscular paralyses, structurally conditioned
deformities/malfunctions or surgery.
The physical conditions of the patient, such as muscle strength or activity level are crucial for the orthotic
treatment. A safe handling of the orthosis must be ensured.
3.3 Qualification
The system joint must only be handled by an orthotist or qualified/trained expert.
3.4 Application
All FIOR & GENTZ system joints were developed for everyday life activities such as standing and walking.
Extreme loads connected to activities like running, climbing and parachuting are excluded.

8
3.5 Product Range
These instructions for use provide information on the following system knee joints:
NEURO CLASSIC zero
zero
NEURO VARIO zero
zero
NEURO CLASSIC
3.6 Combination Possibilities with Other System Joints
The system knee joints can be combined with other system joints from our product range. The NEURO VARIO
system knee joint can be used as supporting joint for NEURO MATIC, NEURO TRONIC, NEURO LOCK MAX and
NEURO FLEX MAX system knee joints.
We recommend that you use the Orthosis Configurator when selecting all system components for your orthosis
and follow the recommendations of the configuration result.
NEURO VARIO
NEURO VARIO 2
NEURO VARIO-SWING

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4. Joint Function
All system knee joints are free moving joints which provide motion control. They are
monocentric and preassembled or preset in a physiological joint angle of 5°. The
integrated extension stop dampers minimise the bumping noises. For the system
knee joints NEUROCLASSIC zero, NEUROVARIOzero, NEURO CLASSIC and NEU-
ROVARIO, the range of motion in extension is limited to 5° flexion. For the system
knee joints NEURO VARIO 2 and NEUROVARIO-SWING, the range of motion in
extension can be precisely adjusted from 0° to 20° by means of the alignment screw.
The range of motion is limited in 135° flexion.
The system joints with the addition zero have only a small posterior oset (fig. 2),
which corresponds to the anatomical posterior oset. These system joints are suita-
ble for patients with normal muscle strength.
System Joints with Anatomical Posterior Oset
NEURO CLASSIC zero
NEURO VARIO zero
System Width 12mm 14mm 16mm 20mm
Posterior Oset
of the Joint Axis 3mm 4mm 5mm 7mm
System joints without this addition have an integrated posterior oset (fig. 3). These
system joints are suitable for patients with poor muscle strength.
System Joints with Mechanical Posterior Oset
NEURO CLASSIC
NEURO VARIO
NEURO VARIO 2
NEURO VARIO-SWING
System Width 12mm 14mm 16mm 20mm
Posterior Oset
of the Joint Axis 12mm 14mm 16mm 20mm
Depending on the used system components, they may have the additional functions
listed below:
System Joint Function System Component
NEURO VARIO zero
NEURO VARIO
static extension stop:
limitation of the maximum extension in dierent degrees
(0°, 5°, 10°, 20°, 30°)
extension stop
System Joint Function System Component
NEURO VARIO 2
NEURO VARIO-SWING
static extension stop:
infinite fine adjustment of the extension stop (0°–20°) alignment screw
fig. 38
system
width
posterior
oset
posterior
oset
=
system
width
fig. 39
system
width

10
System Joint Function System Component
NEURO VARIO-SWING
dynamic extension stop:
- extending movement against resistance possible, which
exceeds the set extension angle (e.g. from 5° downwards
to 0°).
- resistance variable by exchanging the spring unit
- spring’s range infinitely limitable down to 0° via the
motion limiting screw
spring unit
5. Scope of Delivery
Description Quantity
system knee joint (without figure) 1
pan head screw for exchanging extension stops (only for NEURO VARIO zero
and NEURO VARIO; fig. 4) 1
spring unit, green, premounted (only for NEURO VARIO-SPRING; fig. 5) 1
AGOMET® F330, 5g (fig. 6) 1
assembly/lamination dummy (fig. 7) 1
6. Load Capacity
The load capacity results from the relevant patient data and can be determined by using the Orthosis
Configurator. We recommend that you use the system components determined by the Orthosis Configurator
when producing an orthosis and mind the recommended production technique.
7. Tools for Assembling the System Joint
Tools for System Joint Screws System Width
12mm 14mm 16mm 20mm
T15 hexalobular screwdriver/bit x x x -
T20 hexalobular screwdriver/bit - x x x
torque screwdriver 1-6Nm x x x x
slotted screwdriver 3.5 x 0.6 x 100mm x x x x
hexagonal screwdriver with spherical head,
5 x 100mm ---x
fig. 40 fig. 41 fig. 43fig. 42

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Tools for Pan Head Screw for Exchanging the
Extension Stops
System Width
12mm 14mm 16mm 20mm
T8 hexalobular screwdriver x x - -
T10 hexalobular screwdriver - - x x
8. Assembly Instructions
The system joint is delivered fully assembled. All functions are checked beforehand. You
have to disassemble the system joint for mounting it in the orthosis and for maintenance.
To ensure an optimal functioning, follow the assembly instructions below. Secure all screws
with the torque specified in paragraph 8.7. The assembly is illustrated with the
NEUROVARIOzero system knee joint as an example.
8.1 Mounting the Extension Stop NEURO VARIO zero and
NEURO VARIO
For system knee joints without exchangeable extension stop, skip these steps and start the
assembly at paragraph 8.2.
If you are using a system knee joint with an exchangeable extension stop and would like to
mount another extension stop than the premounted 5° stop (fig. 8), proceed as follows:
1 Screw the pan head screw through the threaded hole in the back of the joint's upper
part (fig. 9).
2 Press out the extension stop.
3 Remove the pan head screw.
4 Put the new extension stop into the joint's upper part.
5 Press the extension stop into the joint's upper part by using a vice with braces.
8.2 Mounting the Cover Plate
1 Clean the threads of the joint’s upper part and of the bearing nut after laminating with
LOCTITE®7063 Super Clean. Allow the threads to air-dry for 10 minutes.
2 Grease the axle bore of the joint axis and the friction surfaces of the bearing nut with
orthosis joint grease.
3 Put the bearing nut of the joint axis into the opening of the joint’s upper part (fig. 10).
4 Grease the first sliding washer slightly on both sides with orthosis joint grease.
When mounting the extension stop, mind the correct alignment of the entire
orthosis. In order for an exchanged extension stop not to aect the orthosis align-
ment negatively, also correct the system ankle joint, if necessary.
fig. 44
fig. 45
fig. 46
fig. 47
fig. 48
Make sure not to damage the sliding washer during the assembly. Jammed sliding
washer particles can cause lateral play in the system joint.

12
5 Place the sliding washer onto the joint's upper part (fig. 11).
6 Mount the joint's lower part (fig. 12).
7 Apply spray adhesive on one side of the second sliding washer and adhere it to the cover
plate (fig. 13).
8 Grease the other side slightly with orthosis joint grease.
9 Place the cover plate onto the system joint.
10 Screw in the first countersunk flat head screw (axle screw, S1;
fig.14).
11 Screw in the second countersunk flat head screw (S2; fig. 15).
8.3 Checking the System Joint's Free Movement
Check if the system joint moves freely. If the system joint runs with
lateral play, mount the next thicker sliding washer. If it does not move
freely (it is jammed), mount the next thinner sliding washer.
8.4 Mounting the Extension Stop Dampers and the
O-Ring Damper
The system joints NEURO CLASSIC zero, NEURO CLASSIC, NEUROVARIOzero and
NEURO VARIO each have two extension stop dampers. The system joints NEURO VARIO 2
and NEURO VARIO-SWING each have one O-ring damper.
1 Insert the extension stop dampers into the bores or the O-ring damper into the bore of
the joint’s lower part.
2 Press them or it in.
3 Bring the system joint in complete extension. Thus, the extension stop dampers or the
O-ring damper are fixed in the bores.
8.5 Mounting the Alignment Screw NEURO VARIO 2
For system knee joints without an alignment screw, skip these steps and con-
tinue the assembly at paragraph 8.6.
1 Mount the O-ring (5) to the alignment screw (4).
2 Place the stop damper (3) into the guide ring (2).
3 Insert the extension stop (1) and guide ring (2) into the screw duct (fig. 17).
4 Screw in the alignment screw into the screw duct (fig. 17).
5 Screw in the alignment screw until the required alignment of the orthosis is
achieved. Depending on the setting of the system ankle joint, a joint angle
of approximately 5° corresponds to a physiological joint angle.
6 Make sure that the nose of the joint’s lower part is aligned with the mark-
ing in the centre to obtain a physiological joint angle of 5° (fig. 19).
fig. 51
S2
S1
fig. 50
S1
fig. 53
5
4
3
2
1
When mounting the alignment screw, mind the correct alignment of the entire orthosis. In order for a
changed extension stop angle not to aect the orthosis alignment negatively, also correct the system
ankle joint, if necessary.
fig. 49
fig. 52

13
8.6 Mounting the Spring Unit NEURO VARIO-SWING
For system knee joints without a spring unit, skip these steps
and continue the assembly at paragraph 8.7.
1 Place the stop damper (3) into the guide ring (2).
2 Insert the extension stop (1) and guide ring (2) into the
spring duct (fig. 18).
3 Stick the screw unit (5) onto the spring unit (4).
4 Screw in the sub-assembly into the spring duct (fig. 18).
5 Screw in the sub-assembly until the required alignment
of the orthosis is achieved. Depending on the setting of
the system ankle joint, a joint angle of approximately 5°
corresponds to a physiological joint angle.
6 Make sure that the nose of the joint’s lower part is aligned
with the marking in the centre to obtain a physiological
joint angle of 5° (fig. 19).
8.7 Securing the Screws
The screws are secured after the orthosis has been produced and tried on and
before it is handed over to the patient.
1 Secure the screws for the cover plate (fig. 15) with the torque corresponding to
the system width and LOCTITE® 243 medium strength.
2 Let the adhesive harden (final strength after approx. 24 hours).
Screws for Cover Plate System Width
12mm 14mm 16mm 20mm
S1 (screw 1, axle screw) 3Nm 4Nm 4Nm 4Nm
S2 (screw 2) 3Nm 3Nm 3Nm 4Nm
When mounting the spring unit, mind the cor-
rect alignment of the entire orthosis. In order for
a changed extension stop angle not to aect the
orthosis alignment negatively, also correct the system
ankle joint, if necessary.
fig. 54
5
4
3
2
1
fig. 55
The screws of the cover plate are not secured with the necessary torque at delivery.
You can also find information on the torque in the openings of the cover plate.

14
9. Adjustment Options on the Orthosis
9.1 Adjustment of the Orthosis Alignment via the Extension Stop NEURO VARIO zero
and NEURO VARIO
If the extension stop is exchangeable, it can be mounted into the system joint depending on the desired
extension.
Desired
Extension Required Extension Stop Work Steps
0° 0° extension stop
(no notch) inserting the 0° extension stop
5° 5° extension stop
(one notch) delivery status (fig.19)
10° 10° extension stop
(two notches) inserting the 10° extension stop
20° 20° extension stop
(three notches) inserting the 20° extension stop
30° 30° extension stop
(four notches) inserting the 30° extension stop
9.2 Adjustment of the Orthosis Alignment via the Extension Stop NEURO VARIO 2
The extension stop can be infinitely fine adjusted from 0° to 20° by using the alignment screw (fig. 17) in the
system joint. To do so, screw or unscrew the alignment screw in the system joint. Note that no more than 20°
fine adjustment is allowed. The markings shown in figure19 indicate the joint angle. The marking in the centre
represents a value of 5°. The outer markings represent a range from 0° to 20°.
9.3 Adjustment Options for NEURO VARIO-SWING
The alignment of the orthosis can be adjusted with the alignment screw
(1). The motion limiting screw (2) allows an infinite limitation of the
spring’s range in the dynamic extension stop. The resistance of the dy-
namic extension stop can be changed via spring units (3) with dierent
strengths (fig. 21).
9.3.1 Adjustment of the Orthosis Alignment via the
Extension Stop
The extension stop can be infinitely fine adjusted from 0° to 20° by
using the alignment screw in the system joint. To do so, screw or
unscrew the alignment screw in the system joint (fig. 22). Note that
no more than 20° fine adjustment is allowed. The markings shown in
figure19 indicate the joint angle. The marking in the centre represents
a value of 5°. The outer markings represent a range from 0° to 20°.
fig. 56
fig. 58
fig. 57
1
2
3

15
9.3.2 Variable Spring Force
Insert a spring unit into the spring duct that corresponds with the
required spring force. There are five spring units with spring forces
ranging from normal to extra strong (fig.24). Note that the spring unit
determines the maximum possible range of motion between 3° and 9°.
The NEURO VARIO-SWING is delivered with a premounted green spring
unit.
9.3.3 Adjustable Spring’s Range of the Dynamic
Extension Stop
Screw in or unscrew the motion limiting screw in order to adjust the
spring’s range of the dynamic extension stop (fig.23). If the motion
limiting screw is screwed in completely, the movement is blocked. Each
spring unit determines the maximum range of motion. They are availa-
ble for 3°, 6° and 9° range of motion.
10. Mounting to the System Side Bar/
System Anchor
The system side bar/system anchor must be adhered
and screwed or sewed together with the joint accord-
ing to the recommended production technique (fig.
25–27). You will find more detailed information in
the Instructions for Use for Orthotists or Qualified/
Trained Experts Articulated Side Bars and System
Anchors. You will find information on the production
techniques in the section “Online Tutorials” on our
website www.fior-gentz.com.
fig. 60
9 9 6 6 3
fig. 59
fig. 61 fig. 62 fig. 63

16
11. Converting the System Knee Joints
11.1 Converting Options
The following table shows the converting options for the system knee joints.
System Knee Joint Convertible into
NEURO VARIO 2 NEURO VARIO-SWING
NEURO VARIO-SWING NEURO VARIO 2
plug+gomodularity
The system knee joints with plug + go modularity have identical joint's upper parts and lower parts as well as
assembly/lamination dummies and can be easily converted among themselves. All functional dierences are
integrated in the cover plate. The following system knee joints are provided with plug + go modularity:
-NEURO VARIO 2
-NEURO VARIO-SWING
11.2 Conversion
1 Demount the functional unit.
2 Mount the functional unit of the desired system
joint in the correct system width (fig. 28).
fig. 64

17
12. Maintenance
Check the system joint for wear and functionality every 6 months. In particular, check the joint components
listed in the following table for the possible problems described and, if necessary, take the appropriate meas-
ures. Also check the functionality after every maintenance carried out. It must be possible to move the system
joint without problems or unusual noises. Move the system joint slightly in the medio-lateral direction to
ensure that there is no play.
Joint
Component Potential Problem Measure Maintenance Exchange
cover plate wear replacing cover plate every 6 months every 36 months
countersunk
flat head screw wear replacing countersunk flat head screw every 6 months every 24 months
stop face of the
extension stop wear replacing extension stop, see paragraph 8.1 every 6 months every 24 months
extension stop
damper wear replacing extension stop damper, see paragraph8.4 every 6 months every 24 months
spring unit
reduced spring force/
range of motion replacing spring unit every 6 months every 24 months
breakage of disc
springs (fig. 30) replacing spring unit every 6 months every 24 months
radial move of disc
springs (fig. 31)
realigning disc springs with
pliers every 6 months every 24 months
breakage of pressure
spring replacing spring unit every 6 months every 24 months
squeaking of pressure
spring
greasing pressure spring with
orthosis joint grease every 6 months every 24 months
wear replacing spring unit every 6 months every 24 months
alignment
screw wear replacing alignment screw every 6 months every 24 months
O-ring wear replacing O-ring every 6 months every 24 months
stop damper material fatigue or
breakage replacing stop damper every 6 months every 24 months
bearing nut wear replacing bearing nut every 6 months every 24 months
sliding washer wear replacing sliding washer, see
paragraph 12.2 every 6 months every 24 months
O-ring damper material fatigue or
breakage
replacing O-ring damper, see
paragraph8.4 every 6 months every 24 months
sliding bushing wear replacing sliding bushing every 6 months every 24 months
Clean the threads of the joint’s upper part and of the bearing nut with LOCTITE®7063 Super Clean at every
maintenance. Allow the threads to air-dry for 10 minutes.
Secure the screws for the cover plate with the torque corresponding to the system width and LOCTITE® 243
medium strength during every maintenance (see paragraph 8.7). Remove all adhesive residues first.

18
12.1 Documentation of Maintenance in the
Orthosis Service Passport
The patient receives an orthosis service passport from their orthotist or a
qualified/trained expert when the orthosis is handed over. The orthosis must
be checked every 6 months in order to maintain its function and to ensure the
safety of the patient. The maintenance appointments are noted and confirmed
in the orthosis service passport.
12.2 Maintenance of the Disc Springs
NEURO VARIO-SWING
Check the disc springs particularly carefully during
maintenance. If necessary, realign the disc springs
to increase the useful life of the spring unit. If
necessary, replace the spring unit to maintain the
functionality of the system joint.
12.3 Replacing the Sliding Washers
Sliding washers are available in dierent thicknesses (e.g. GS1910-040 is 0.40mm thick). Each thickness has
a dierent marking (fig. 32). You will find the article numbers of the premounted sliding washers on the back
page of these instructions for use.
12.4 Dirt Removal
Dirt must be removed from the system joint when necessary and during regular maintenance. For this purpose,
disassemble the system joint and clean the soiled system components with a dry cloth.
13. Period of Use
To guarantee a safe use and complete functionality as well as an unlimited period of use of the system joints,
you must adhere to the following conditions:
-Adhere to the specified maintenance intervals without interruption and document each maintenance
(see paragraph 12).
-Adhere to the determined maintenance conditions (see paragraph 12).
-Check the wear parts, as required, and exchange them in the defined intervals (see paragraph 12).
-Check the adjustment of the system joint during maintenance and correct it, if necessary (see
paragraph 12).
-Check the functionality of the system joint during maintenance (see paragraph 12).
fig. 66 fig. 67
0.40mm 0.45mm 0.50mm 0.55mm 0.60mm
fig. 68
fig. 65

19
-The maximum load determined during the planning of the custom-made product shall not be exceeded by
changes in the patient data (e.g. due to weight gain, growth or an increased activity). If the determined
maximum load on the system joints is exceeded, the system joint must no longer be used. When planning
the custom-made product, expected changes in patient data need to be taken into account.
-The period of use of the system joints ends with the period of use of the custom-made product (orthosis).
-The multiple use of the system joint in another custom-made product is not allowed (see paragraph 20).
14. Storage
It is recommended to store the system joint in its original packaging until the custom-made product is
produced.
15. Spare Parts
15.1 Exploded View Drawing NEURO VARIO zero
The exploded view drawing of the NEURO VARIO zero system knee joint also serves as an exemplary illustra-
tion for the NEURO CLASSIC zero, NEURO CLASSIC and NEURO VARIO system knee joints.
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fig. 69
6a

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15.2 Exploded View Drawing NEURO VARIO 2
15.3 Exploded View Drawing NEURO VARIO-SWING
fig. 71
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24d
24c
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24b 14a
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25a
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fig. 70
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14a
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