Ottobock | 21
8E38=9, 8E39=9, 8E41=9
3.1 Driving vehicles
An upper extremity amputee's ability to drive a vehicle is determined on a case-by-case basis.
Factors include the type of fitting (amputation level, unilateral or bilateral, residual limb conditions,
design of the prosthesis) and the amputee's abilities. All persons are required to observe their
country’s national and state driving laws when operating vehicles. For insurance purposes, drivers
should have their driving ability examined and approved by an authorised test center. For maximum
safety and convenience, Ottobock recommends that, at the very least, a specialist evaluate the
need for any adaptations to the car (such as by installing a steering fork). It is imperative that the
driver is able to operate the vehicle without any risk with the MyoHand VariPlus Speed turned off.
Driving with the MyoHand VariPlus Speed turned ON may present a risk if the MyoHand VariPlus
Speed inadvertently moves due to unintentional muscle contraction or other causes.
Caution:
Before a MyoHand VariPlus Speed with a quick-disconnect wrist can be used to drive
a vehicle, it must be positioned in such a way that a slight turn of the Hand, which can
occur during steering, will not disconnect the Hand from the prosthesis.
4 Scope of delivery
1 pc. of 8E**=9 MyoHand VariPlus Speed
1 pc. of 647G504 Instructions for Use
5 Description and function
The MyoHand VariPlus Speed is a myo-electrically controlled prosthetic hand that is characterised
by a high grip speed in connection with an innovative and sensitive control concept. The MyoHand
VariPlus Speed is equipped with a programming function.
Different proportional and digital control modes with 1 or 2 electrodes, linear transducers or swit-
ches allow individual adaptation to the respective patient.
The MyoHand VariPlus Speed is based on the Ottobock DMC System (DMC = Dynamic Mode
Control): This system, which has been developed by Ottobock, uses two independent measure-
ment and control systems in order to optimally adapt the grip speed and grip force to the patient's
muscle signal.
The proportional DMC-Control (Dynamic Mode Control) allows the amputee to control grip speed
and grip force proportionally to his muscle signal. As soon as the strength of the muscle signal
changes, grip speed and grip force immediately adapt to the new muscle signal.
The coaxial bushing of the MyoHand VariPlus Speed (8E38=9) is marked with a green ring; the
connection cable of the MyoHand VariPlus Speed (8E39=9 or 8E41=9) is marked with a green
bushing.
5.1 Programming function
For optimal adaptation to the patient, six different control modes are available. Connect the My-
oSelect (757T13) to select the control mode.
5.2 Switching the MyoHand VariPlus Speed ON and OFF
(Fig. 1, Fig. 2)
By pressing the cosmetic glove you can actuate the ON / OFF switch integrated into the control
electronics.
By pressing the back of the hand:
Function ON
(Fig. 1)
By pressing the thumb:
Function OFF (Fig. 2)
