Hy5 MyHand User manual

Service manual
MyHand
Revision: 03 Date: May 2021
user id:
product nr:
date of
manufacture:

1 Introduction 4
1.1 Dimensions and specications 5
1.2 MyHand Health-Check list 6
2 Prosthesis and third party components 7
3 Replacement of nger pads 7
4 MySkin prosthetic glove 8
5 MyWrist connections 8
6 Disposal 8
7 Troubleshooting 9
8 Safety and Cautions 10
9 Hy5 App 10
10 Incident reporting 11
Table of Contents

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1. INTRODUCTION
This document provides instructions for the
tting and service of MyHand, and should be
read in full prior to tting. It is highly rec-
ommended that the use of this manual is in
conjunction with instruction from a clinician
experienced in upper limb and myoelectric
prosthesis.
Read this document thoroughly before
using the MyHand.
It is recommended to also read the MyHand
User Manual.
The Hy5 MyHand is intended for any individ-
ual adult with an amputation or dysmelia. The
size of the prosthetic hand is equal to a male
size 7 ¾, but can be used by both genders
independent of height, weight and age.
A regular service interval of 12 months
shall be maintained for the MyHand. This
requires the MyHand to be sent to Hy5 or a
Hy5 approved workshop. A service remind-
er shall be sent one month in advance of the
due date.

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1.1 DIMENSIONS AND SPECIFICATIONS
Principal dimensions
Maximum opening - thumb opposed to index nger 120 mm
Thumb swing through angle (opposed to non-opposed) 70°
Performance specification
Maximum power grip 120 N
Maximum tripod grip 60 N
Minimum time to open/close: pinch grip 1.0 Sec.
Maximum static load: hook grip 40 kg
Maximum load individual nger - hook grip 20 kg
Fingertip extension load 8 kg
Weight 575 g
Size 7 ¾
Battery
Maximum current 5A
Voltage 7.2V
Battery capacity rechargeable lithium polymer, 2000mah
Environmental conditions
Storage and transport in original packaging +5°C to +35°C / +41F to+95F
Storage and transport without packaging +5°C to +35°C / +41F to +95F
Operation +5°C to +35°C / +41F to +95F

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1.2 MYHAND HEALTH-CHECK LIST
The following checks can be made to identify if the hand needs to
be returned to Hy5 for maintenance:
1. Check for any visible signs of damage
How: Check all around the hand for any signs of broken or
deformed components
2. Check the hand turns on/off reliably.
3. Check hand closing time < 1,0s.
How: Use video camera to lm several closing sequences,
from fully open to point of rst contact
4. Check hand switches to high power mode
How: Use battery pack to perform pinch grip around your
open hand. If the pinch force becomes uncomfortable, this is
a clear indication that high power mode is functional. Stop
gripping before the hand exhibits excessive force
5. Check for any signs of oil leaks
How: Examine closely for oil in the following locations:
— Around oil-lling screws
— Around edge of mounting frame
— Around emergency release switch
— Around edge of quick disconnect
— Around cylinder rods
6. Check ngers move freely
How: Rotate each nger joint individually. Each joint should
spring back under spring-force, and there should be no rub-
bing or grinding in the joint
7. Check emergency valve functions as intended – both open
and close
How: Close hand using battery pack. Open emergency re-
lease switch – ngers should open. Return emergency switch
back to normal position to resume operation.
8. Check quick disconnect connects/disconnects in a reliable
manner
How: Use battery pack to check reliable connect/disconnect.
Hand should not switch off when rotating.
If the hand fails on any of these points, it should be returned to
Hy5 for maintenance.

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2. INTEGRATION & THIRD PARTY
COMPONENTS
The following third party components should be purchased in
addition to the MyHand:
• Female EQD socket
• 7.4V, 2200mAh battery
• 1 or 2 myo sensors
Please refer to the ‘product integration guide’ provided in the
product box for exact component part numbers to ensure prod-
uct compatibility.
Adjustment of the myosensors is case-specic and should be
based on an interactive process between the clinician and the
user.
CAUTION! Only Hy5 recommended batteries should
be used with MyHand. Use of other battery
systems will result in poor performance of
MyHand.
3. REPLACEMENT OF FINGER PADS
The partial nger pads for thumb, index –and middle ngers, can
easily be replaced. First remove the glove. Then put two ngers
around the pad and pull in line with the nger. The pad will slide
off smoothly. New pads can be pushed on in a straight direction
until they stop. No adhesives are required for this process.

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4. MYSKIN PROSTHETIC GLOVE
MyHand shall always be used with a MySkin glove. It is important
to ensure that the glove is tted properly.
Donning
1. Roll the sleeve of the glove back on itself up to the level of the
wrist area.
2. Under power, close the ngers of the hand to an approximate-
ly half-closed position.
3. Gradually pull the glove down over the hand. When the glove
is approximately half-way mounted to the hand, align the n-
gers and thumb with the corresponding openings in the glove
4. Pull the glove over the remainings of the MyHand.
5. Inspect the glove ensuring that it is mounted all the way down
onto the ngers, and that the nger tips are correctly in place
6. After donning is complete, check that the MyHand functions
as expected and that the ngers correctly form a pinch grip
when closed.
5. WRIST CONNECTIONS
There is currently one wrist option for MyHand, the Electric
Quick Disconnect (EQD) wrist. This allows the hand to be easily
attached, and to be quickly removed with a 360-degree rotating
action.
6. DISPOSAL
When disposing of MyHand, please send it back to Hy5pro AS for
safe disassembly and disposal.

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7. TROUBLESHOOTING
MyHand does not
operate
MyHand stops
halfway through an
action
User reports My-
Hand is difcult to
operate
MyHand opens
when a close signal
is given
• Ensure that MyHand is switched ON
• Ensure the battery is charged and
connected properly
• Ensure that MyHand is fully engaged
at the wrist
• Check the electrodes have good
contact with the skin
• Check the electrode cable is correctly
tted to the electrode
• Electrode settings may need
adjustments
• Check the electrode cable is not
damaged
• Check the battery cable is not
damaged
• Check the coaxial plug and bushing
are clean
• Electrode settings may need
adjustment
• Ensure the electrodes maintain good
contact with the skin
• Check electrode placement and
wiring
• Ensure the battery has good charge
• Swap input signals or switch the
electrode connections on the coaxial
plug
If problems continue please contact
your local supplier or Hy5Pro AS,
www.Hy5.no

8. SAFETY AND CAUTIONS
Hy5 accepts no responsibility for any damage or injury caused by
improper use.
• Do not subject MyHand to excessive loads
• Always use with MySkin
• Do not use in water
• Do not use to operate heavy / industrial machinery
• Do not use machinery with moving parts that may cause
personal injury or damage.
• Users must comply local regulations on the operation of
automobiles, aircraft, sailing vessels of any kind and any other
motorized vehicle or device
• Do not use MyHand for extreme activities that may cause injury
• Do not expose to excessive moisture, liquid, dust, vibration or
shock
• Do not expose to high temperatures
• Do not expose to ames
• Do not use or expose to explosive atmospheres
• Do not disassemble componentry or modify in any way
• Maintenance, repairs and upgrades may only be performed by
qualied Hy5 technicians and technical partners
• Do not use with a damaged glove
9. HY5 APP
The Hy5 App is created together with upper extremity CPO´s and
patients to make it easy to customize MyHand to the patients
desired settings and to train the myoelectrical muscle signals. The
App can be used by both patient and CPO.
The App communicates with MyHand through a Bluetooth signal
in the prosthesis. You need to pair MyHand to a mobile or tablet,
when you have downloaded the App. The Bluetooth in MyHand
will be activated by holding the ON/OFF button in for approxi-
mately 5-6 seconds.
Failure to comply with the guidelines below
will invalidate the warranty.
CAUTION!