TASKA Medium Hand V1.1 Instruction Manual

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taskaprosthetics.com Appropriate
Use Guidelines
10 Nelson Street, Riccarton, Christchurch 8011, New Zealand.
200-30-027-MED-EN-A 05-20
TASKA Medium Hand V1.1

Appropriate use guidelines for
the TASK A Hand
Your TASKA Hand is waterproof, dustproof,
and most durable hand on the market.
We want you to have the best possible
experience when using your TASKA Hand.
These guidelines describe:
Appropriate use of your TASKA Hand
Instructions for battery charging
Uses that may invalidate the warranty
Specific activities you might want to do with
your TASKA Hand
Safety precautions to avoid damaging your
TASKA Hand and harming yourself or others.
Please read and follow these guidelines carefully.
We are confident that if you follow them,
your TASKA Hand will help you to do more,
all day and every day. Failure to follow these
guidelines may result in damage to your hand,
harm to yourself or others, and the warranty
becoming invalid. If you are unsure whether a
particular activity is appropriate for your
TASKA Hand, ask your clinician or contact us at
[e-mail].
Appropriate Use Guidelines 2
Precision myoelectric
components, designed
& assembled in New Zealand.

Examples of appropriate use
Your TASKA Hand can be used for a wide range of activities of daily living (ADL)
(please refer to the limits of use section for further information on the limits for
these activities), for example:
Activities that involve getting your hands wet or putting them in water for a
short time:
• washing hands
• washing dishes
• washing a vehicle
• walking in the rain
• using a garden hose.
Activities that involve some hand vibration:
• using motorised garden tools such as lawn mowers, hedge trimmers,
and line trimmers
• using small or medium electric power tools such as drills, light-duty saws,
and angle grinders
Activities that put some strain on the hand:
• light garden duties
• carrying a suitcase
• low-impact workshop activities
• low-intensity sporting activities.
Replaceable
Grip Tips
(thumb and
fingers)
Wrist Flexion
buttons
Resettable
Knuckle Release
Flexible fingers
Flexible wrist
Replaceable
Top Faceplate
Shock absorbing
Knuckle Block
Quick Disconnect
Wrist/Low Profile Wrist
Durable
compliant
Thumb Boot
Proximal Grip
Your TASKA Hand
Grip Cycle
buttons
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Normal daily activities:
• eating and drinking
• picking up small objects with precision
• shaking hands
• using electronics such as mobile devices, computer mice, keyboards,
and cameras
• dressing
• household tasks such as cleaning, vacuuming, ironing, and bedmaking
• driving a vehicle
• and much more.
Examples of inappropriate use
Your TASKA Hand is not designed to be used for activities that involve a lot of
vibration, impact, or force to the hand. If you use your TASKA Hand while doing the
following activities, you may invalidate the warranty:
• using high-impact tools such as hammers, impact wrenches,
or hammer drills
• using heavy-duty machinery such as chain saws and reciprocating saws
• deliberately hitting the hand against hard surfaces
• weightlifting
• high-intensity, adventure, or contact sports.
Using firearms
Do not use your TASKA Hand to operate firearms.
Limits of use
Using your TASKA Hand outside the following limits could cause damage that the
warranty will not cover. Please see the TASKA Warranty for further details on the
standard warranty.
Driving vehicles
Before operating any vehicle with your TASKA Hand, make sure you are legally
allowed to operate the vehicle with a prosthesis. You must obey local regulations
when using vehicles, aircraft, sailing vessels or any other form of motorised transport
while using your TASKA Hand. Please talk to your clinician for further details.
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If you use your TASKA Hand while operating a vehicle:
Use an open, static grip so that it does not accidentally close on a control.
Do not use your TASKA Hand to operate safety-related controls such as
a brake.
Make sure the battery has enough charge to last the length of the journey.
Water immersion
Your TASKA Hand is rated to IP67.
If the hand is fitted with a Quick Disconnect Wrist, do not put it in water above
the Wrist Flexion buttons. If the hand is fitted with a Low Profile Wrist, then you
may put both the wrist and the hand under water to the first opening on the
arm socket (see diagrams on the next page).
TASKA Prosthetics is not responsible for the waterproofness of the prosthetic
socket that your TASKA Hand will be attached to. Please discuss your socket’s
waterproofness with your clinician.
The outside of the Power Switch is waterproof. However, if water gets into the
socket, it may damage the inside of the switch, batteries, or other electronic parts.
Salt water may discolour the metal parts of your TASKA Hand. If salt water gets on
the hand during an activity, wash the hand afterwards with fresh water.
Temperature
Your TASKA Hand will function normally within a temperature range of 14°F to 104°F
(-10°C to +40°C). Outside this range, the hand might not function correctly.
Never expose the batteries to temperatures above 140°F (60°C). We recommend
that you store the batteries between 32°F to 86°F (0°C to 30°C).
Humidity
You may use your TASKA Hand within a humidity range of 15% to 100%.
When you are not using or transporting the hand, you must store it somewhere
dry (in a humidity range of 15% to 90%).
Quick Disconnect Wrist safe water immersion point. Low Profile Wrist safe water immersion point.
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Weight
You may use your TASKA Hand to hold weight up to 20 kg.
Dirt and dust
Fine dust is not able to get into your TASKA Hand, so you may use it in very dirty
and dusty places. However, do not let it come into contact with coarse or rough grit
such as sand.
Avoid mud, oils, and other kinds of dirt that could stain or discolour the hand.
If you need to use the hand in these environments, you should wear a glove or
wash the hand as soon as possible afterwards.
Chemicals
Do not expose your TASKA Hand to corrosive substances such as solvents, acids,
alkalis, strong detergents, industrial chemicals, and any substances that are
harmful to human skin.
Washing your TASKA Hand
Clean your TASKA Hand regularly only using water, soft soap, or light disinfectant
to wash the hand. Harsh chemicals may damage the hand.
Always wash your TASKA Hand after using it in situations that could make
it dirty. Clean the hand before using it to eat, prepare food, or treat injuries.
Safety precautions when using your TASKA Hand
When using your TASKA Hand:
Contact your clinician if something is wrong with your hand.
Do not try to repair or modify the hand yourself. Dismantling of your TASKA
Hand beyond removal of defined user replaceable components by anyone not
authorised by TASKA Prosthetics will invalidate the warranty of your TASKA Hand.
Do not expose the hand to hazards that would injure a natural hand, for example:
• heavy impact
• rapid vibration
• explosions
• corrosive chemicals
• dangerous machinery.
Make sure the hand is turned off before you attach or remove it from the socket.
Do not use your TASKA Hand in a way that could cause a safety hazard.
Do not rely on the anti-slip feature to prevent losing hold of objects.
Do not use your TASKA Hand for holding anything that could cause harm
if dropped, such as a heavy or fragile object or container holding a
hazardous substance.
Do not rely solely on your TASKA Hand to support your weight, or as the primary
means to prevent a fall.
Do not use your TASKA Hand where a flammable liquid or gas is present.
Use your TASKA Hand carefully to avoid injuring people or damaging objects.
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Use of a prosthetic arm can cause body strain, discomfort or irritate the residual
limb. Talk to your clinician if your TASKA Hand is causing pain or discomfort.
Keep your TASKA Hand away from naked flames or anything hot enough to
burn human skin.
Keep your TASKA Hand clear of any live electrical wiring.
To prevent unauthorised connections and extend battery life, turn Bluetooth off
when not in use.
Software use with your TASKA Hand
Our HandCal software allows you to adjust and customise the settings on your
TASKA Hand. To download the software, please use the following link:
taskaprosthetics.com/taska-user-software-downloads/
For assistance on using the HandCal software, comprehensive guides are available
for download on our website.
Battery care and charging
We have thoroughly tested the TASKA Batteries to make sure they are suitable for
safe use with your TASKA Hand.
Only use a TASKA charger and Power Switch to charge your
TASKA Batteries.
Use of any other type of charger could damage the battery, or shorten its life.
Any damage or impairment caused to a battery by use of chargers not approved by
TASKA is not covered by warranty.
Visit taskaprosthetics.com for a full list of requirements for batteries, chargers,
and power systems.
Battery charging
Your TASKA Battery will not lose capacity due to charge memory; regularly
recharging the battery when it is only partly discharged will not affect battery life.
Battery charging process
To charge the TASKA Battery:
1. Connect the charger to a wall socket for the Mains Charger, or a vehicle power
outlet for the Car Charger which does not exceed 12V.
2. Connect the magnetic tip of the charger’s lead to the charging point on the
Power Switch in your prosthetic socket.
3. The light on the charger will change from green to red to show that charging is
in progress.
4. When charging is complete, the light on the charger will return to green.
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User replaceable parts on your TASKA Hand
The only user replaceable parts are the Top Faceplate and Grip Tips, do not change
or modify any other parts of the hand.
Changing the Top Faceplate
Your TASKA Hand is supplied with two additional Top Faceplates and Removal
Tools. A label on the Top Faceplate indicates the point at which the Removal Tool
should be inserted to avoid damage to the part.
Once the Top Faceplate has been removed, the new part can be fitted. Position the
Top Faceplate along the outside edge of the hand and push down until both sides
click into place.
New batteries on a full charge will power at least 400 grip actions before grip strength
becomes weak. It takes four hours to fully charge the battery from an uncharged state.
Do not wear your TASKA Hand while charging the batteries.
Your TASKA Hand will not work while it is charging.
Battery care
If treated correctly, the TASKA Battery will offer excellent performance. Treating the
battery well means:
• charge the battery every night
• charge the battery before storing for long periods
• do not let the battery become completely flat
• replace the battery every 12 months.
Battery warnings
Do not expose the battery to naked flames or temperatures above 140°F (60°C).
Do not bend, pierce, or damage the case of the battery.
Do not change or short circuit the battery wires.
If your battery is leaking or you notice fluid on your socket contact your clinician
immediately for repair and cleaning.
Stop using your hand immediately if you notice that the battery is swollen or
unusually hot. Contact your clinician for a replacement battery.
Dispose of batteries according to local regulations. Removing Top Faceplate using the Removal Tool. Positioning and attaching new Top Faceplate.
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Changing the Grip Tips
Your TASKA Hand is supplied with an additional set of Grip Tips and a TASKA
Screwdriver. Using the TASKA Screwdriver, remove the screw at the base of the Grip
Tip, then slide the rubber Grip Tip upwards away from the hand. To install the new
Grip Tip slot the Grip Tip into position, slide down until the holes align and insert the
screw, tighten gently.
Use only the TASKA Screwdriver to change the Grip Tips.
Do not overtighten screws.
Removing Grip Tip using the TASKA Screwdriver. Positioning and attaching new Grip Tip.
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Storage
If your TASKA Hand is not in use, we recommend that it be stored in a dry, warm
environment in the protective case provided.
Servicing
During the warranty period you will be contacted annually by your clinician to
arrange servicing requirements for your TASKA Hand.
Product technical information
PRODUCT DESCRIPTION
TASKA-XXXXXX Myoelectric controlled prosthetic hand
TASKA-B1G1-1 Pair of rechargeable 7.4v 2000mAh Li-Ion batteries
TASKA-MC-01 Mains-powered 8.4v battery charger
TASKA-CC-01 12v-powered 8.4v battery charger
TA SK A- BTA- 0 1 Bluetooth adaptor to connect to PC’s USB port
TASKA-PWR-01 Power Switch and charger connection
For product compatibility and additional information visit taskaprosthetics.com
Products you may also need
Sensors
Your TASKA Hand may be controlled by inputs from the following types
of sensors:
• EMG (Electromyographic) sensors
• FSR (Force Sensing Resistor) sensors
• Pattern Recognition Sensor Arrays
Wrist connection
Hands with the Quick Disconnect Wrist require a Quick Disconnect style wrist
connector with an electrical connection.
Visit taskaprosthetics.com for an up-to-date list of sensors and wrist
connections that are compatible with your TASKA Hand.
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Troubleshooting guide
PROBLEM WHAT TO DO
Fault (“!”) LED comes on, and
the hand stops working
This might mean:
a) the hand is too hot inside
b) there is water inside the hand.
Turn the hand off, leave it for 5 to 10 minutes, then turn
it on again.
The fault (“!”) light comes
on repeatedly and the hand
stops working.
Contact your clinician, who will help you identify and fix
the problem.
The battery light is flashing
even though the batteries
were recently charged.
In the first instance, ensure your battery is fully charged.
If the battery light continues to flash, contact your clinician.
The thumb does not line
up with the index finger
during a pincer grip.
1. Perform a fully closed flexi-tool handshake grip and then
try the pincer grip again.
2. If still not aligned correctly, turn the hand off and on
again, ensuring the fingers are free to move through their
full range of motion.
3. If the pincer grip still isn’t aligned correctly, contact your
clinician for further advice.
PROBLEM WHAT TO DO
The battery light flashes
every 10 seconds.
The batteries have only 10% power remaining. Recharge the
batteries as soon as possible.
The hand does not respond
to control signals.
Make sure the:
• hand is turned on
• batteries have sufficient charge
• charging point is disconnected from a charger
• hand is connected properly at the wrist
• current grip is not a static grip
• EMG disable function is turned off.
The connections from the sensor(s) may have become
loose. To check if this is the case:
1. Turn on the hand while holding down the EMG
trigger button.
2. Try to open and close the hand as normal. This should
make the light for each sensor flash. If this does not
occur, there may be a connection issue
Contact your clinician if the problem continues.
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PROBLEM WHAT TO DO
The battery light stays on and
the hand stops working.
The batteries have gone flat and need to be recharged.
The battery charge does not
last a full day.
Possible reasons :
• the batteries are not fully charged. A full charge takes
four hours
• the batteries have been in use for more than one year
• the ‘anti-slip’ feature is on - this uses a lot of battery.
Turn off this feature in HandCal if not required
• the ‘close’ signal is being used unnecessarily and is using
the battery. Once the hand has closed and has a solid grip
on an object, cease the ‘close’ signal
• Bluetooth has been left on and is using the battery.
Turn off Bluetooth when you do not need it.
Contact your clinician if the problem continues.
If you experience any other issues, please contact your clinician for further advice.
TASKA Prosthetics, 10 Nelson Street,
Riccarton, Christchurch 8011, New Zealand.
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21 Appropriate Use Guidelines