Aether Biomedical Zeus User manual

Instructions
For Use
Version 4.0 / 2022.05.01
For Qualied Personnel

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ZEUS......................................................................................................................3
INTENDED USE.................................................................................................3
PATIENT POPULATION..................................................................................4
CONTRAINDICATION......................................................................................4
TECHNICAL SPECIFICATION.......................................................................5
SCOPE OF DELIVERY.......................................................................................7
ZEUS GRIPS........................................................................................................7
Opposed Grips.......................................................................................................8
Non-opposed Grips...........................................................................................11
Moving the thumb............................................................................................14
Changing grips....................................................................................................15
INTERFACE WEB APPLICATION..............................................................17
CONTROL METHOD......................................................................................18
WARRANTY AND COMPATIBILITY.........................................................20
Compatibility..........................................................................................................20
Warranty....................................................................................................................20
Cleaning....................................................................................................................21
Maintenance..........................................................................................................21
SAFETY AND WARNINGS.......................................................................22
Hand............................................................................................................................22
Troubleshooting.................................................................................................23
Table of Contents

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Warning!
Regulatory Compliance.............................................................................24
SYMBOLS.................................................................................................25
EMC LABELLING INFORMATION...................................................27
REPORTING.............................................................................................32
Warning!
»We highly recommend reading this document carefully before
using the prosthesis.
»This document contains information about the proper and
safe use of the prosthesis.
»We highly recommend keeping this document for the whole
period of using prosthesis.
»If you have any questions about the product please contact us
on [e-mail]
2

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Zeus
Zeus is a multi-action bionic limb combining ease of control with an
elegant, robust design. The ngers and thumb provide a rm grasp
to perform everyday tasks with ease. The ngers stall individually,
allowing them to conform to the shape of the object, regardless of
shape or size.
Read this document carefully before tting Zeus.
Intended Use
Zeus is an external prosthetic hand intended to be used alone or
with other appropriate upper limb components to form a comple-
te arm prosthesis, to be tted only by qualied and certied
clinicians. It should be used only by upper limb amputees and by
people with congenital absence of an upper limb. Zeus is suitable
for 3 amputation levels: below-elbow, above-elbow and shoulder
disarticulation, but the nal decision whether Zeus should be used
belongs to qualied medical personnel. Its functionality covers most
hand movements.
Zeus including the socket (made by CPO) is designed for only one
person during the whole lifetime of the prosthesis.
Fitting of the product to the patient’s upper limb may be exclusively
done by a qualied and certied CPO.
Zeus is designed for mild to moderate activities.
Indications
»Amputation level below-elbow, above-elbow and shoulder
disartiqulation
»For unilateral or bilateral amputation
»Dysmelia of the forearm or upper arm
»The patient must be able to understand usage and safety
messages and put them into practice

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Patient Population
Safe Usage
Zeus is recommended for:
»Adults only
»All genders
»Age 18-65 while starting to use the prosthesis - older people
already using bionic limb are in the target group
»People with circulation or respiratory problems after consulting
their physician
Zeus is not recommended for:
»Children under age 18
»People with serious mental disorders
»Please avoid use in situations with heavy loads, vibrations or
impacts.
»Zeus is developed for everyday use and must not be used for
unusual activities. These unusual activities include, for example,
sports with excessive strain and/or shocks to the wrist unit
(pushups, downhill. mountain biking) or extreme sports (free
climbing, paragliding, etc.).
»Furthermore, the Zeus should not be used for the operation of
motor vehicles, heavy equipment (e.g. construction machines),
industrial machines or motor-driven equipment.
»The prosthesis is intended exclusively for use on one patient.
Use of the product by another person is not approved by the
manufacturer.
Contraindication

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Technical Specication
1.2sec
Device weight
QWD
Max. closing time Grip force
Force on chassis (static,
supporting the hand)
Force with closed hand
(static, carrying a bag)
N
560g / 1.2lbs
500N 350N
Height (nger tip to wrist base)
Palm Width
Thickness
182.7mm / 7.19in
80.6mm / 3.17in
29.9mm / 1.17in
34.17lbf / 152N
112.40lbf 78.68lbf

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Key Features
Operating Range Storage Range
-5°C to +45°C
-25°C to +70°C
(at home – between uses)
15% to 93% RH (non-condensing)
Up to 93%
700 hPa to 1060 hPa
Temperature:
Temperature:
Humidity:
Humidity:
Pressure:
Closed loop motor control sensing
nger position and applied force for
proportional control
Compliant ngers to
prevent breaking of
nger units
5 Individually motorized
articulating digits
allowing for dexterity in
movement
Opposable thumb
design with inbuilt
sensor for position
detection
12 Selectable + 2 User
congurable grip patterns
The strongest bionic hand
(152N grip force)
Closing speed 1.2 seconds
Modular design
all repairs can be
done under 60
minutes

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Scope of delivery
Zeus Grips
You can choose from 12 grip modes. The hand has two selectable
thumb positions: opposed and non-opposed.
»Opposed thumb in opposition to the ngers on the hand allows
choosing grips like Tripod and Power.
»Non-Opposed thumb parallel with the ngers of the hand
allows grips like Key and Finger Point
»The speed and force applied by the ngers can be modulated
on the basis of EMG signal.
Zeus V1 is available in left and right-hand congurations.
The following components are provided along with the Zeus hand:
1. Accessories Kit (AC-01)
2. Instruction for use (0704_IFU)
3. User Guide (U01DC-0100)
4. Quick start guide for clinicians (U01DC-0200)
5. Zeus congurator web application v 1.00 or higher (U01SW-0100)
Model No.
A-01-L
A-01-R
Product
Zeus hand - Left
Zeus hand - Right

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Opposed Grips
Power Grip
Trigger Grip
This grip is useful for operat-
ing appliances which require
trigger mechanisms like
sprays. The hand grasps the
object and conforms to the
shape of the object. The index
nger and middle nger are
controlled proportionatally to
operate the trigger mecha-
nism. The speed and force
applied by the index nger
can be modulated on the
basis of EMG signal.
In this grip, the thumb is
opposed, while all of the other
four ngers close until they
meet the object or receive
a closing signal. The strong
grip provides 152N of force
spread over all four ngers
and thumb. This multi-pur-
pose grip allows you to open a
door or shake hands. Individ-
ual nger stalling means the
grip conforms to the shape of
the object so that you can lift
things such as a wine glass.
Thanks to advanced sensors,
the hand optimizes the force
applied to the object.

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Precision Open Grip
In this grip, the thumb
moves to a mid-point and
stops. The index nger
can be controlled propor-
tionally to form a pinch.
Middle, ring and little
ngers close fully. This grip
can be used for picking up
small objects from a table.
In this grip, the thumb
moves to a mid-point and
stops. The index nger can
be controlled proportional-
ly to form a pinch. Middle,
ring and little ngers
remain open. This grip can
be used for picking up
small delicate objects and
various delicate activities.
Precision Closed Grip

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Tripod Closed Grip
The grip allows you to
hold medium sized objects
and to carry out activities
. The thumb assumes a
mid-point position while
the index and middle
nger move proportionally
to reach the tip of the
thumb. The ring nger
and little nger close fully.
Tripod Open Grip
This grip allows you to
hold a variety of daily life
objects like a pen, car
keys and eggs. The thumb
assumes a mid-point
position while the index
and middle nger move
proportionally to reach
the tip of the thumb.
The ring nger and little
nger remain open.

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Non-Opposed Grips
Finger Point
The index nger is
active and in a point-
ing position with the
rest of the ngers
open. This can be
used for working on
computer keyboard,
typing.
The index nger is
active and in a point-
ing position with the
rest of the ngers
closed. This can be
used for pushing
switches and buttons.
Active Index

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Hook Grip
This grip is used for lifting
up heav y obje cts like brief-
cases, shopping bags and
gym equipment. Because
of the self-locking nature
of Zeus, the ngers have
a static grip capacity
of 35kgs, allowing you
to lift heavy objects
with ease. This grip can
also be used to provide
support when getting up
from a seated position.
The hand opens to
the extent where it
provides a slight curva-
ture to support plates,
bowls and books.
The rubberized palm
provides a at, non-
slippery surface to
condently hold
objects in this grip.
Open Palm

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This grip is used to
operate a comput-
er mouse. The hand
assumes the position
of the mouse. The
index nger and the
middle nger can be
controlled to push
left and right buttons
respectively.
Mouse Grip
Key Grip
This is a commonly
used grip for picking
up thin at objects,
holding a key or
turning a page. The
four ngers assume
a position to provide
a at platform for the
thumb. The thumb can
be controlled propor-
tionatlly to open and
close.

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Moving the thumb
To move the thumb from the non-opposed to the opposed position,
please hold the thumb at its base with your free hand and push it
steadily inwards in a controlled manner.
To move the thumb from the opposed to the non-opposed position,
please hold the thumb at its base with your free hand and push it
steadily outwards in a controlled manner.
Non-opposed ▶
Opposed ▶
▶Opposed
▶Non-opposed

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Changing grips
There are 2 different modes to change grip.
Sequential mode
In the sequential mode you can cycle between the grips in the loop.
Using the primary grip change signal you go forward in the loop;
using the secondary grip change signal, you go back. The grips are
split into two groups: with the thumb opposed and non-opposed.
To switch between the groups, you need to manually adjust the
thumb position and generate a grip change signal or a secondary
grip change signal.
Pairing mode
In the pairing mode, the grips are arranged in a hierarchical manner,
allowing for quick access. The rst level of division is based on the
position of the thumb. When the thumb is in the opposed position,
the opposed group of grips is active and when the thumb is in the
non-opposed position, the non-opposed group of grips is active.
» To switch between the opposed group of grips and the non-op-
posed group of grips, the user has to move the thumb in the
desired position and then provide a Change Signal.
»Within each group of grip, there are two subgroups - the prima-
ry group and the secondary group. Each subgroup has two grips
within it, the default grip and the alternate grip.
»To switch between the default grip and the alternate grip, pro-
vide a Change Signal.
»To switch between the subgroups, primary group and the sec-
ondary group, provide a Secondary Change Signal.
»When you change the position of the thumb, provide a Change
Signal to allow the prosthesis to change between the opposed
and non-opposed group of grips.
The table below shows what type of signal is treated as prima-
ry Change Signal and Secondary Change Signal in different grip
switching modes.

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To switch between opposed and non-opposed grips, it is necessary
to change the thumb positon accordingly. The grip pairings can be
represented as follows:
Grip switching mode Primary Change Signal Secondary Change Signal
Co-contraction Co-contraction Long co-contraction
Open-open Open open Open open open
Hold-open Hold open Long hold open
Single electrode Open open (single elec-
trode)
Open open open (single
electrode)
»REMEMBER This works only with Control Modes - Pairing Mode.

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Interface Web Application
Clinicians are granted access to the web Zeus conguration applica-
tion.
The software is designed for prosthetists to make change in the Zeus
setting to ne-tune functions for users.
The Interface software is designed for use only by qualied and Zeus
certied prosthetists. Users of the prosthesis are not allowed to make
any changes in it.
Using this application the practitioner is able to: control the EMG
settings for controling Zeus, choose grips available to the user,
modify the nger positions for each grip and activate more advan-
ced functions of the prosthesis.
Prosthetists should refer to the Software instructions (U01DC-0400)
provided by Aether Biomedical to use the software and to under-
stand the process of connecting the device with a computer.

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Control Methods
The three types of possible signals detected by sensors include:
1. Open-contraction of extensor muscles.
3. Co-contraction - Contraction of both exor and extensor musc-
les simultaneously. It can be compared to making a st, or trying to
open and close the hand at the same time if the sensors are placed
on the forearm of the user.
The 2-channel sensor system might be placed differently, depending
on the user accessibility.
2. Close-contraction of exor muscles.

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Zeus actively measures the EMG signal to look for the grip Change
Signal (CS) and the grip Secondary Change Signal (SCS). These si-
gnals are used to switch between chosen grips. The practitioner can
select which action is treated as the CS and the SCS by selecting grip
switching mode from the following options in the web application:
»Co-contraction - impulse of the co-contraction signal is treated
as CS and holding co-contraction for the period specied in so-
ftware (default 0.5s) is treated as SCS
»Open-open - to generate CS, a user needs to make 2 short, con-
secutive impulses of the open signal. To generate SCS, a user has
to make 3 short consecutive impulses of the open signal.
»Hold-open - holding the open signal above the specied thre-
shold for longer than 1.5s (possible to change in the software)
when the grip is fully opened is treated as a CS. Holding the open
signal above the specied threshold for longer than 3s (possible
to change in the software) when the grip is already fully opened
is treated as a SCS.
»Single electrode - this grip switching mode works with a one
channel sensor system. It treats 2 short, consecutive impulses of
the signal as CS and 3 short, consecutive impulses of the signal
as SCS.
Also a user can quickly switch between grips: tripod closed and tri-
pod open, precision closed and precision open, nger point and
active index. To do this he needs to hold an open signal for a longer
period, with the active ngers fully open, until all of the ngers open.
To switch from the open variant of grip to closed variant he needs to
hold a close signal, with the active ngers fully closed, until all of the
ngers close.