Hy5 MyHand User manual

Service manual
MyHand
Revision: 02 Date: June 2019
user id:
product nr:
date of
manufacture:

1 Introduction 4
1.1 Dimensions and specications 5
1.2 MyHand Check list 6
2 Prosthesis and third party components 6
2.1 Electrodes/Myo sensors 7
2.2 Batteries 7
2.3 Replacement of ngers 7
2.4 Replacement of ngers pads 8
3 MySkin prosthetic glove 8
3.1 Fitting 8
4 Connections and Compatibility 8
5 Disposal 8
6 Troubleshooting 9
7 Warning and Precautions 10
Table of Content

1. INTRODUCTION
This document provides instructions for
tting and service of MyHand, and should be
read in full prior to tting or
servicing. It is highly recommended 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 do-
ing any service on MyHand.
It is recommended to also read the MyHand
User Manual.
The Hy5 MyHand is intended for any individ-
ual adult with a hand amputee and dysmelia.
The size of the prosthetic hand is equal to a
male size 7 ¾, but can be used by both gen-
ders independent of height, weight, physics
and age.
Regular maintenance schedule for MyHand
shall be every 6 months.
1.1 DIMENSIONS AND SPECIFICATIONS
Principal dimensions
Maximum opening - thumb opposed to index nger 118 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: power grip 1.5 Sec.
Minimum time to open/close: tripod grip 1.5 Sec.
Maximum static load: hook grip 40 kg
Maximum load individual nger - hook grip 20 kg
Fingertip extension load 8 kg
Weight 580 g
Size 7 ¾
Battery
Maximum current 5A
Voltage 7.2V
Battery capacity rechargeable lithium polymer, 2000mah
Environmental conditions
Storage and transport in original packagin +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

1.2 MYHAND SERVICE CHECK LIST 2. HY5 PROSTHESIS & THIRD PARTY
COMPONENTS
The third party components that the Hy5 hand needs in order
to work includes;
• Socket
• 5A battery
• 2 myo sensors.
Hy5 is connected to the socket with the quick disconnect. A Hy5
prosthesis glove size 7 ¾ shall be used on the hand at all time.
A complete User Manual is delivered with Hy5.
CAUTION!
CAUTION!
2.1 Electrodes/Myo sensors
Hy5 needs 2 myo sensors to operate.
When the Hy5 hand is connected to the socket, the user shall
operate the hand for a few minutes to clarify whether the myo
sensors need sensitivity adjustments. The feedback from the
user allow for optimizing the myosensors to the users’ personal
preferences.
When the sensors are optimized to the user, the user shall be giv-
en some more minutes to operate and get familiar with the new
hand. Hy5 is ready for use.
The battery is located inside the socket, and is not delivered by
Hy5Pro AS.
2.2 Batteries
Only a 5A battery should be used with
MyHand. Use of other battery systems will
result in poor performance of MyHand.
The following checks can be made to identify if the hand needs to
be returned to Hy5Pro AS for maintenance:
1. Check the hand turns on/off reliably.
2. Check hand closing time < 1,5s.
How: Use video camera to time several closing sequences,
from fully open to point of rst contact
3. 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
4. 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
5. Check for any visible signs of damage
How: Check all around the hand for any signs of broken or
deformed components
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. Close emergency release
switch, and close hand again.
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 quick connect is rotated and
hand is on
If the hand fails on any of these points, it should be returned for
maintenance.

6. 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
• 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
3. THE PROSTHETIC GLOVE
MyHand shall always be used with a MySkin glove. Use only size 7
¾, and ensure that the glove is tted properly.
3.1 Fitting
1. Invert the glove to the level of the nger openings.
2. Ensure the ngers are straight.
3. Align the covering nger holes with the digits of the hand.
4. Pull down onto digits of the hand.
5. Position thumb opening over thumb digit
6. Pull the glove over the remainings of the MyHand.
7. Inspect the glove ensuring the nger tips are fully tted
against the digit tips.
8. Check that the MyHand functions are in place. Open and
close the hand.
4. CONNECTIONS AND COMPATIBILITY
There is currently one wrist option for MyHand. The electric
Quick Disconnect (QDC) allows the hand to be attached with a
45-degree rotation, and to be quickly removed with a 360-degree
rotating action.
5. DISPOSAL
When disposing of MyHand, please return it to Hy5Pro AS.
If problems continue please contact
your local supplier or Hy5Pro AS,
www.Hy5.no
2.4 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 a straight direction with the nger.
The pad will slide off smoothly. New pads can be pushed on in a
straight direction until they stop.

7. 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
to a natural hand
• 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
• Do not use while batteries are charging
Failure to comply with the guidelines below
will invalidate the warranty.
CAUTION!
FDA
Hy5 is registered with the United States Food and
Drug Administration for the manufacture and supply
of prosthetics and orthotics Products
FDA Registration Number: 3014936213
CE mark
Declaration of conformity according to the applicable
European directives
Legal manufacturer
Hy5Pro AS, Raufoss Industripark, Bygning 100, 2830
Raufoss, NORWAY
Storage Temperature Limit:
5°C/41F to +35°C/95F
5°C/
41F
35°C/
95F

hy5.no