COVVI Nexus Manual de usuario
www.covvi.com | Unit 4, Quayside Business Park, Leeds, LS10 1DJ | 020 3949 9500
Technical Manual
THE NEXUS HAND
Anything Is
Possible
Foreword
COVVI was founded in 2017 by a passionate and experienced team who wanted to
continue to create leading prosthetic designs.
The human hand is amazing and the level of functionality which can be restored through
prosthetics has historically been very low; but as engineers and designers we see this
as a challenge to continuously improve our designs to meet the needs of users. COVVI
started with a blank sheet of paper and a mission to address some of the most prevalent
deficiencies of current prosthetic hands.
Fast forward to present day and we now have the fastest, strongest, and best-looking
prosthetic hand in the market.
The COVVI Team
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1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
Introduction 06
1.1 What Defines Us? 06
1.2 The Path to the Nexus Hand 06
1.3 Engineering Behind Nexus 07
What’s Inside 10
2.1 The Hand Kit 10
2.2 The Hand Kit Part Numbers 11
2.3 The Advantage Kit 12
2.4 The Advantage Kit Part Numbers 13
Technical Information 14
3.1 Nexus Glove Overview 14
3.2 Nexus Hand Overview 15
The Nexus Hand 17
Environmental Conditions 18
Safety Guidelines 19
6.1 Abuse & Neglect 19
6.2 IP44 19
6.3 Harsh Chemicals/Abrasives 19
6.4 Operating a Vehicle 20
6.5 Firearms 20
6.6 Sporting Activities 20
6.7 Safety Precautions 21
The Nexus Hand Overview 22
7.1 Connecting/Disconnecting the Nexus Hand 22
7.2 E-Paper Screen 24
Why Nexus? 26
8.1 Passively Flexing Fingers and Thumb 26
8.2 Integrated Flex Wrist 27
8.3 Intuitive Thumb Control/Smart Switching 28
8.4 Water and Dust Resistant (IP44) 28
8.5 The Index Fingertip is Touch Screen Compatible 29
8.6 Remote Firmware Updates 29
8.7 Various Grip Switch Triggers 29
Grip Patterns 30
9.1 Opposed Grips 30
9.2 Non-opposed Grips 32
The Nexus Thumb 34
Contents
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Contents
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
The COVVI Power Supply 36
11.1 Contents 36
11.2 Warnings 39
11.3 Power Supply Overview 40
11.4 The Batteries 41
11.5 Activating the System 42
11.6 Changing the Display Mode 43
11.7 Charge Indication 44
11.8 Fitting the COVVI Power Supply 46
11.9 System Specification 48
11.10 System Compatibility 52
11.11 Battery Replacement 52
11.12 Maintenance 53
Component Compatibility 54
COVVI Go App 58
13.1 COVVI Go 58
13.2 Registration 59
13.3 Hand Selection 59
13.4 Input Settings 61
13.5 Setup Wizard 65
13.6 Sensor Interface Screen 65
13.7 Operating Modes 66
13.8 Grip Tables 68
13.9 Grip Switch Triggers 69
13.10 Additional Setup 72
13.11 Changes 75
13.12 Advanced Configuration 76
13.13 Config History 77
13.14 Report a Bug 77
13.15 Reset to Default 77
13.16 Remote Firmware Updates 78
13.17 Custom Firmware Update 79
Maintenance 80
Warranty 81
15.1 24-Month Manufacturer’s Warranty 81
15.2 Optional Extended Warranty of up to 36 Additional Months 82
Warranty Service and Repairs 83
16.1 Limited Liability 83
Returns 84
Disposal 85
Symbols Used 86
EU Declaration of Conformity 87
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1.0 Introduction
Our name was formulated to reflect our single driving intention to change multiple lives together forever through
harnessing endless connections to make anything possible. With our name came our ‘delta’ logo, which also
has meaningful origins as a symbol of change and doing things dierently.
1.1 What Defines Us?
COVVI is a portmanteau of the Latin ‘Coperor’ and ‘Vita’, translating as ‘working together’ and ‘life’.
1.2 The Path to the Nexus Hand
The Nexus Hand was born from a genuine passion for prosthetics and helping others. Through 10 years of
working in the industry alongside clinicians and listening to users we have developed a sincere appreciation
for how dicult prosthetics are to use and how poor devices do not address or resolve this. After the initial
excitement of a new device, these frustrations frequently result in the prosthetic device being rejected, which
we see as a personal failure. In today’s world there are so many products and designs that we simply do
not need, yet in the field of prosthetics so much is still to be done. As a team we could not envisage more
rewarding work than developing a cutting-edge prosthetic hand that overcomes as many of these issues as
possible, so we made it our absolute mission to do so. We truly want to reduce the restrictions and limitations
prosthetic users face every day.
We designed the Nexus Hand with your patient in the forefront of our minds and we want it to be an invaluable
tool in their life. Our two main goals were to make it functional and robust and we are confident it not only
enables the easy performance of daily tasks but can withstand anything life throws at it! We always aim to
develop desirable products, which is why we use only the best materials and pride ourselves on our unrivalled
industrial design. After years of hard work, drive, and passion it makes us immensely proud to see our design
working as intended and actively simplifying people’s lives.
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1.0 Introduction
1.3 Engineering Behind Nexus
Stainless Steel
Finger Pivot
E-Paper Screen
High Impact
Polymer Chassis
Stainless Steel
Knuckle
Cast Aluminium Digit
Components
Stainless Steel
Finger Link
Stainless Steel
Finger Chassis
Machined Aluminium
Wrist Housing
High Chromium
Steel Wrist Plate
ESD Pathway
Stainless Steel
Thumb Pivot
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1.0 Introduction
Our hand size range is suitable for all adults and most adolescents. At COVVI, we started with the small Nexus
Hand and built bigger. This ensured we did not compromise on any functionality across the size range where
in the past engineers had always started big and tried to shrink their design down, which was challenging to
do without losing some of the hand’s function. We are extremely proud of our compact design and cannot
wait to see your patient bring it to life!
Note: This infographic below should only be used as a guide. Please take measurements of hands from clinical data.
Note: TASKA is owned by 5TH ELEMENT LIMITED, Bebionic is owned by Otto Bock HealthCare GmbH, i-Limb is owned by Touch
Bionics Limited.
i-Limb XS
Bebionic Medium
Nexus Small
Bebionic Small
Michelangelo
Nexus Medium Nexus Large
i-Limb Large
TASKA (8¼”)
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The Nexus Hand was designed to withstand the necessities of daily activities; however, it should not be subject
to excessive force. Please refer to section 6.0 for more information on our safety guidelines. As seen in section
12.0, please note that the Nexus Hand is recommended with COVVI products.
The Nexus Hand should only be fitted by a Certified Prosthetist.
This symbol is used in instances to warn about hazardous or dangerous materials
and/or objects and will be used throughout this document.
We do not recommend the use of carbon fibre materials in a fabricated socket
unless it is grounded to the carbon fibre lamination.
CAUTION
PRECAUTIONS FOR HANDLING
ELECTROSTATIC SENSITIVE DEVICES.
This product uses semiconductors that can be damaged by electrostatic discharge
(ESD). The Nexus Glove can be removed, but no further disassembly can be done.
All disassembly and/or repairs below this level can only be conducted by certified
technicians with training from COVVI. Any disassembly performed by unauthorised
personnel will not be covered under warranty.
1.0 Introduction
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2.0 What’s Inside
2.1 The Hand Kit
To remove the Nexus Hand from its packaging, first slide foam piece 1 vertically out of the box, then slide the
rest of the foam pieces along into the gap left by foam piece 1. Lift the hand from the box by foam piece 2 and
5 and slide both o from the EQD and fingertips, respectively. To replace the Nexus Hand back into the box,
follow the steps in reverse. Please take care with the orientation of the foam pieces.
Right
Knuckle Foam
Order of Disassembly
Removable Insert for
Medium & Large
Left
2 3 5 4 1
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