Product Description; Wrist Unit; Combination Possibilities - Ottobock 8E500 Instrucciones De Uso

2 Product description

2.1 Function
The Michelangelo Hand is a myoelectrically controlled gripping component in the modular
Ottobock Axon-Bus prosthetic system. The complex gripping kinematics combined with the ana­
tomical appearance and low weight support the patient in his or her daily activities, thereby
providing the highest rehabilitation value.
The Michelangelo Hand is equipped with two drives to achieve a natural motion pattern. The main
drive is responsible for the gripping movements and gripping force. The thumb drive facilitates
the two gripping modes 'Opposition Mode' and 'Lateral Mode'. Actively driven components are
thus the thumb, index finger and middle finger. The ring finger and little finger passively follow the
movements.

2.1.1 Wrist unit

Starting at the neutral position, the joint can be flexed by approximately 75° in 4 locking positions;
extension is 45° with 3 locking positions. Flexion and extension are performed passively.
A flexible and a rigid mode are available according to the application situation.
Flexible mode
Flexible mode simulates the natural movement characteristics of a relaxed wrist joint. This flexible
condition closely approximates the physical movement characteristics of the hand and wrist joint.
To select the flexible mode, push the unlock lever to the stop (see fig. 2) until it engages. The joint
can be moved without engaging at the ratchet positions. Pushing the lever again terminates the
flexible mode and the wrist unit engages at the next available position in the rigid mode.
Rigid mode
Various everyday conditions require an individually adjustable wrist unit of the gripping compon­
ent in the rigid mode. When the unlock lever is only pushed lightly and not to the stop (see fig. 2),
the wrist unit can be moved to the desired position. When the unlock lever is released, the wrist
unit engages at the next available position.

2.2 Combination possibilities

This product is to be combined exclusively with components in the Axon-Bus prosthetic system.
Components of the Ottobock MyoBock system or components from other manufacturers cannot
be used with this product.
3 Application
3.1 Indications for Use
The Michelangelo Hand 8E500 is to be used exclusively for exoprosthetic fittings of the upper
limbs.
3.2 Use/Field of Application
The Michelangelo Hand 8E500 is suitable for unilateral or bilateral amputations starting with the
transradial/transhumeral amputation level or, in case of dysmelia, for forearm or upper arm fit­
tings.
3.3 Conditions of use
The Axon-Bus prosthetic system was developed for everyday use and must not be used for unusu­
al 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 Axon-Bus prosthetic system should not be used for the opera­
tion of motor vehicles, heavy equipment (e.g. construction machines), industrial machines or
motor-driven equipment.
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