Otto Bock 8E70 User manual

Instructions for use (qualified personnel) ........................................................................... 3
8E70=*, 8E71=*, 8E72=*

2

1 Foreword English
INFORMATION
Date of last update: 2022-02-09
►Please read this document carefully before using the product and observe the safety
notices.
►Instruct the user in the safe use of the product.
►Please contact the manufacturer if you have questions about the product or in case of prob
lems.
►Report each serious incident related to the product to the manufacturer and to the relevant
authority in your country. This is particularly important when there is a decline in the health
state.
►Please keep this document for your records.
The products "8E70=* bebionic hand EQD, 8E71=* bebionic hand Short Wrist and 8E72=*
bebionic hand Flex" are referred to as the product/terminal device/hand in the following.
These instructions for use provide you with important information on the use, adaptation and
handling of the product.
Only put the product into use in accordance with the information contained in the accompanying
documents supplied.
According to the manufacturer (Otto Bock Healthcare Products GmbH), the patient is the operat
or of the product according to the IEC 60601-1:2005/A1:2012 standard.
2 Product description
2.1 Design
The product consists of the following components:
1. Distal phalanx
2. Middle finger joint
3. Finger chain
4. Program switch (see page7)
5. Back of the hand
6. Wrist joint
7. CMC joint of the thumb
8. Gaiter
9. Distal thumb joint
2.2 Function
The product is a myoelectrically controlled and multiarticulating hand prosthesis.
The product enables objects to be gripped, pushed, pulled and carried with multiarticulating
functionality. The product is designed to resemble the anatomical structure and weight of a
human hand.
The thumb can be set to two different positions (opposition and lateral), allowing for 14different
grips (see page3). Eightgrips can be preconfigured using the adjustment software.
A finger chain that protects the drive serves as overload protection for the 4 actively powered fin
gers. In case of overloading, the corresponding finger cannot be flexed anymore since the con
nection to the drive was severed. The finger chain can be replaced without disassembling the ter
minal device (see page22).
Essential performance of the product
• No essential performance according to IEC 60601-1
3

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2.2.1 Grips
Moving the thumb from the lateral to the opposition position
1) Firmly grasp the base of the thumb with the
free hand.
2) Apply controlled pressure to push the
thumb inwards until it is opposite the palm.
Moving the thumb from the opposition to the lateral position
1) Firmly grasp the base of the thumb with the
free hand.
2) Apply controlled pressure to push the
thumb outwards until it is lateral to the
palm.
Grips with opposed thumb (the thumb is opposite the palm)
Tripod grip
The index finger and middle finger are closed simultaneously with
the thumb until the three fingers touch. Ring and little fingers con
tinue to close until they meet resistance or the close signal stops.
The thumb position has to be adjusted for this grip so it can be car
ried out precisely (see page16).
Application examples: this grip can be used to grasp and hold
objects (e.g. pens, coins).
Power grip
All fingers close until they encounter an object or the close signal
stops. The thumb then moves towards the palm as well.
Application examples: this grip can be used to hold round objects
(e.g. fruit, balls, glasses).

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Finger adduction
By spreading the fingers, a flat, thin object (< 3mm/< 0.12inch)
can be held between the finger joints when closing the hand.
Spreading the fingers is most effective with the power grip. It can
also be used with the key grip and finger point. This grip cannot
be selected in the adjustment software.
Application examples: makes it possible to hold thin objects effect
ively (e.g. magazine, cutlery, toothbrush).
Hook grip
This grip corresponds to a power grip with the fingers only partly
closed. It makes it possible to engage objects with carrying loops
and can also be initiated from the relaxed hand position. This grip
cannot be selected in the adjustment software.
Application examples: this grip makes it possible to carry bags.
Active index grip
All fingers close and can pick up an object while the index finger
remains extended. Subsequently the index finger can be individu
ally flexed or extended by the user. An open signal causes the index
finger to extend first followed by the remaining fingers. The object
is released from the hand.
Application examples: this grip can be used for example to operate
spray bottles.
Pinch grip
For this grip, only the index finger and thumb meet while the
remaining fingers close.
The thumb position has to be adjusted for this grip so it can be car
ried out precisely (see page16).
Application examples: this grip makes it possible to grasp small
objects (e.g. house keys, coins, closures, pens).
Precision closed grip
The middle finger, ring finger and little finger are closed. The
thumb moves to a half-closed position. Subsequently the index fin
ger can be individually flexed or extended.
The thumb position has to be adjusted for this grip so it can be car
ried out precisely (see page16).
Application examples: this grip makes it possible to grasp small
objects and makes working at a table easier.
Precision open grip
The middle finger, ring finger and little finger remain open. The
thumb moves to a half-closed position. Subsequently the index fin
ger can be individually flexed or extended. The thumb has to be
adjusted for this grip so it can be carried out precisely (see
page16).
Application examples: this grip makes it possible to grasp small
objects.

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Grips with the thumb in the lateral position (the thumb is sideways to the palm)
Column grip
The thumb closes towards the palm, then the remaining fingers
bend over the thumb. In doing so, the thumb blocks the closing
movement of the index finger and lets it protrude beyond the other
three fingers.
Application examples: this grip can be used to push large buttons
(e.g. light switches) and for putting on clothes.
Finger point
The middle finger, ring finger, little finger and thumb move towards
the palm. The index finger remains extended.
Application examples: small buttons can be operated with this grip
(e.g. keyboard, remote control).
Key grip
The fingers close partway. In doing so, the thumb grasps the index
finger sideways. This makes it possible to secure and release flat
objects with the thumb, without movement of the remaining fingers.
Application examples: this grip can be used to hold thin objects
without the remaining fingers moving (e.g. a spoon, paper, plate,
credit card or key).
Mouse grip
The thumb and little finger close to grasp the computer mouse
sideways. Only when the thumb encounters resistance can the
index finger be flexed. The index finger extends automatically when
no close signal is applied. An open signal loosens the grip.
Application examples: this grip makes it possible to operate a com
puter mouse.
Open palm grip
In the open hand position, the thumb is in the lateral position to
achieve the largest possible flat palm. This grip cannot be selected
in the adjustment software.
Application examples: this grip makes it possible to carry plates on
the flat hand.

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Relaxed hand position
The thumb is in the lateral position and closes partway towards the
palm. All fingers assume a slightly flexed position. When the close
signal is repeated, the fingers move to form the hook grip.
Application examples: this grip is recommended when the hand is
not being actively used.
2.2.2 Program switch
A program switch is located on the back of the product (item 4). Both the program switch and
flexion are not visible when using a prosthetic glove and have to be felt.
The switch incorporates various functions:
• Switching the terminal device on and off (see page20)
• Switching the Bluetooth function on/off (see page20)
• Switching between primary and secondary grips (see page20)
• Activating donning mode (see page21)
Depending on whether the terminal device is switched on or off and how long the program switch
is pressed, the following functions can be carried out:
Terminal device switched on
Duration of pressing Function Beep signal Vibration signal
Approx. 1second Switching between
primary and secondary
grips
1xshort after releasing
the program switch
1xshort after releasing
the program switch
Between 2 and
3seconds
Switching the hand off – –
Longer than
4seconds
Switching off the
Bluetooth function
1x short 1x short
Longer than
4seconds
Switching on the
Bluetooth function
2x long 2x long
Terminal device switched off
Duration of pressing Function Beep signal Vibration signal
Between 2 and
3seconds
Switching the hand on 1xshort after releasing
the program switch
1xshort after releasing
the program switch
Approx. 3seconds
(until thumb opens)
Deactivating donning
mode
– –
Approx. 5seconds
(until thumb closes)
Activating donning
mode
1x short 1x short
2.2.3 Switching modes
Switching between the default and alternative grip can be carried out as follows, depending on
the selected mode:
• Mode 0: program switch
• Modes 1 through 4: with another open signal after fully opening the hand
• Mode 5: co-contraction signal after fully opening the hand
2.2.4 Factory settings
Mode 4 as the switching mode and the following grips are configured on delivery (factory set
tings):

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Opposed primary grips
• Default: tripod grip
• Alternative: power grip
Lateral primary grips
• Default: key grip
• Alternative: finger point
Opposed secondary grips
• Default: active index grip
• Alternative: tripod grip
Lateral secondary grips
• Default: column grip
• Alternative: mouse grip
2.2.5 Wrist joint versions
The products "8E70=*, 8E71=*, 8E72=* bebionic hand" are differentiated by different versions of
the wrist joint:
8E70=* bebionic hand EQD (with quick-dis
connect wrist unit)
Permits easy separation of the terminal device
from the prosthetic socket. The terminal device
can be removed quickly when needed via a
360° rotating movement and replaced by a dif
ferent terminal device with the same quick-dis
connect unit.
8E71=* bebionic hand Short Wrist
Low-profile connection for users with a long
forearm or transcarpal amputation. The hand
can be rotated against a constant friction,
which can be adjusted during the fitting pro
cess. The required 9S110=* lamination ring is
included in the scope of delivery.
The 13E190 or 13E190=150 switch block is
required when this terminal device is used.
8E72=* bebionic hand Flex
The flexion joint with quick-disconnect wrist
unit makes positioning possible for the user at
20° or 40° of flexion, in the neutral position and
at 20° or 40° of extension. The terminal device
can be removed quickly when needed via a
360° rotating movement and replaced by a dif
ferent terminal device with the same quick-dis
connect unit.

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2.2.6 Unlocking/locking the wrist joint (8E72=*)
The individual flexion and extension of the wrist
joint can be locked in five different positions (in
20° increments each).
1) Press the release button in the direction of
the arrow.
2) Move the terminal device to the desired
position while holding the release button.
From the relaxed hand position, it engages
at 20° and 40° in each direction.
3) Let go of the release button to lock the ter
minal device in the respective position.
2.3 Combination possibilities
This product can be combined with the following Ottobock components:
Elbow components for the products 8E70=* and 8E72=*
• 12K100N=* DynamicArm
• ErgoArm Hybrid plus: 12K44=*
• ErgoArm Electronic plus: 12K50=*
Active rotation for the products 8E70=* and 8E72=*
• 13E205 MyoRotronic • 10S17 electric wrist rotator
Passive rotation for the 8E70=* and 8E72=* products
• 9E169 coaxial plug • 10S4 coupling piece
3 Intended use
3.1 Indications for use
The product is intended exclusively for upper limb exoprosthetic fittings.
3.2 Conditions of use
The product is intended exclusively for use on one user. Use of the product by another person is
not approved by the manufacturer.
The product was developed for everyday use and must not be used for unusual activities. These
unusual activities include, for example, sports which involve excessive strain and/or shocks to the
wrist joint (pushups, downhill racing, mountain biking, ...) or extreme sports (free climbing,
paragliding, etc.). Furthermore, the product should not be used to operate motor vehicles, heavy
equipment (e.g. construction machines), industrial machines or motor-driven equipment.
Permissible ambient conditions are described in the technical data (see page25).
3.3 Indications
• Amputation level below-elbow, above-elbow and shoulder disarticulation
• 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 prac
tice.
• The patient must fulfil the physical and mental requirements for perceiving visual/acoustic sig
nals and/or mechanical vibrations.
3.4 Contraindications
• All conditions which contradict or go beyond the specifications listed in the section on
"Safety" and "Indications for use".

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3.5 Qualification
The fitting of a patient with the product may only be carried out by O&P professionals who have
been authorised with the corresponding Ottobock training.
4 Safety
4.1 Explanation of warning symbols
WARNING Warning regarding possible serious risks of accident or injury.
CAUTION Warning regarding possible risks of accident or injury.
NOTICE Warning regarding possible technical damage.
4.2 Structure of the safety instructions
WARNING
The heading describes the source and/or the type of hazard
The introduction describes the consequences in case of failure to observe the safety instruc
tions. Consequences are presented as follows if more than one consequence is possible:
> E.g.: Consequence 1 in the event of failure to observe the hazard
> E.g.: Consequence 2 in the event of failure to observe the hazard
►This symbol identifies activities/actions that must be observed/carried out in order to avert
the hazard.
4.3 General safety instructions
WARNING
Non-observance of safety notices
Personal injury/damage to the product due to using the product in certain situations.
►Observe the safety notices and the stated precautions in this accompanying document.
WARNING
Operating a vehicle with the prosthesis
Accidents due to unexpected actions of the prosthesis.
►The prosthesis should not be used for the operation of motor vehicles and heavy equipment
(e.g. construction machines).
WARNING
Using the prosthesis while operating machines
Injury due to unexpected actions of the prosthesis.
►The prosthesis should not be used to operate industrial machines or motor-driven equip
ment.
WARNING
Use of damaged power supply unit, adapter plug or battery charger
Risk of electric shock due to contact with exposed, live components.
►Do not open the power supply unit, adapter plug or battery charger.
►Do not expose the power supply unit, adapter plug or battery charger to extreme loading
conditions.
►Immediately replace damaged power supply units, adapter plugs or battery chargers.