System Electric Hand Digital Twin | Myo Terminal Devices | Myo Hands and Components | Upper Limb Prosthetics | Prosthetics | Ottobock US B2B Site
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System Electric Hand Digital Twin

Item #: 8E39=7
With lamination ring for wrist disarticulation

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Suggested HCPCS Coding: L7007 + L6882
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Lamination ring suitable for wrist disarticulation. Passive wrist rotation with friction.

The Digital Twin control features a digital and dual channel control mode. The desired control mode is selected with the integrated 13E185 function plug.

The System Electric Hand Digital Twin can be operated with the 757B35=* MyoEnergy Integral, the 757B20/757B21 EnergyPack or the 757B15 X-ChangePack. It features a centrally guided flat cable with automatic shut-off electronics and integrated on-off switch, low-friction bevel gear, positive back lock and system inner hand. With potentiometer for adjusting the switching threshold (double-channel control). An integrated slip clutch allows the hand to be opened in case of power supply or myoelectric control failure.


Side Size Operating
Approx. maximum
gripping strength
Average speed Weight with
inner hand
8E39=7-L7 Left 7 6/7.2 V 79 mm 90 N 110 mm/sec ~355 g Women, Adolescents
8E39=7-R7 Right 7 6/7.2 V 79 mm 90 N 110 mm/sec ~355 g Women, Adolescents
Myo Glove Sizing for Hands
Hand Size For Standard Glove
Article Number
Skin Natural Glove
Article Number
5 Children 1-3 yrs old 8S20=136x41 (L/R) color 8S20N=136x41 (L/R) color
5 1/2 Children 3-6 yrs old 8S20=147x45 (L/R) color 8S20N=147x45 (L/R) color
6 Children 5-10 yrs old 8S20=162x56 (L/R) color 8S20N=162x56 (L/R) color
6 1/2 Children 8-13 yrs old 8S20=177x64 (L/R) color 8S20N=177x64 (L/R) color
7 Women, Adolescents 8S13=7 (L/R) color 8S13=7 (L/R) color
7 1/4 Men, Adolescents 8S11=190x76 (L/R) color 8S11N=190x76 (L/R) color
7 1/4 Women 8S12=190x78 (L/R) color 8S12N=190x78 (L/R) color
7 3/4 Men 8S11=210x78 (L/R) color 8S11N=210x78 (L/R) color
8 1/4 Men 8S11=225x80 (L/R) color 8S11N=225x80 (L/R) color


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8E38, 8E39, 8E41, 8E44 - Patient Information

Product Information: 646D44 (EN/DE/FR/IT/ES/PT/NL/SV/DA/PL/HU/CS/RO/TR/EL)

Publish date: Aug 22, 2016

PDF Document (646D44-INT-28-1608w.pdf | 845 KB)

8E38=7, 8E39=7, 8E41=7 System Electric Hands - Instructions for Use

Instructions for Use: 647H327 (EN/DE/FR/IT/ES/PT/NL/SV/NO/TR/EL/JA/ZH)

Publish date: May 28, 2014

PDF Document (647H327-INT-07-1405w.pdf | 1 MB)

Myobock System Overview

Reimbursement: (EN)

Publish date: 

PDF Document (MYO_Poster_USA.pdf | 995 KB)

8E38=7, 8E39=7, 8E41=7 System Electric Hand Digital Twin - Instructions for Use

Instructions for Use: 647H337 (EN/DE/FR/IT/ES/PT/NL/SV/DA/PL/EL)

Publish date: Sep 18, 2015

PDF Document (647H337-INT-07-1509w.pdf | 654 KB)

MyoBock System Overview

Product Information: 646F277 (EN)

Publish date: Jan 1, 2013

PDF Document (646F277-GB-05-1301w.pdf | 1 MB)