Preparation For Use - Ottobock Myo Plus Gebrauchsanweisung

6 Preparation for use

6.1 Laminating instructions
The product can be positioned in the forearm socket.
6.2 Determine electrode position
INFORMATION
Depending on the residual limb and socket structure, the electrode domes may leave impres­
sions in the patient's skin. Use the flat electrode domes in case of deep impressions in the skin.
Use the high electrode domes if there are no or only barely visible impressions in the patient's
skin.
Required tools
• Drill; twist drill ø 5 mm
The remote electrodes have to be positioned as follows:
1) Mark the position of remote electrode 1 below the ulna and 6-7 cm distal of the olecranon.
2) Extend the marking around the entire circumference of the prosthetic socket.
→ This creates a circumferential line.
3) From the line, measure and mark 40 mm in the distal direction.
4) Extend the marking around the entire circumference of the prosthetic socket.
→ This creates a second circumferential line.
5) Determine the positions of the remaining remote electrodes using the positioning gauge for
the O&P professional.
6) Mark the remote electrodes 2 - 8 on the proximal line (e.g. with an X).
7) Reflect the electrode positions to the distal line.
8) Drill through the prosthetic socket at the marked locations with a 5 mm bit.
9) For 2 of 8 electrodes, an additional hole has to be drilled for the reference potential contact.
INFORMATION: The hole for the reference potential contact can either be drilled
between the two electrode domes or in a position where little muscle activity is expec­
ted.
The electrode dummies have to be used to fabricate the outer socket. The battery dummies and
Integral dummy have to be positioned on the prosthetic socket according to the space require­
ments. If desired, the remote electrodes can also be attached in the cavity between the outer and
inner socket. Fabricate the outer socket using the familiar technique.
6.3 Inserting electrodes
CAUTION
Improper securing of the electrode domes
Injury due to product malfunction.
► Do not use thread locking compound (Loctite) to secure the electrode domes. Applying
thread locking compound forms an insulating layer that prevents transmission of the EMG
signals.
Required tools
• Lug wrench (7 mm)
included in delivery
1) Insert the dome nut into the prepared hole in the prosthetic socket from the outside.
2) Insert the dome of the remote electrode into the prosthetic socket from the inside.
The blue and green cables have to be positioned on the two marked lines.
3) Secure the remote electrodes and cables on the inner socket with adhesive tape or hook-and-
loop fastening strap.
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