Otto Bock 6A20-10 Instructions For Use Manual page 11

► Clean the threads before every installation.
► Apply the specified torque values.
► Follow the instructions regarding the length of the screws and
about how to secure the screws.
CAUTION
Improper processing of the anchor arms of the lamination
anchor
Risk of injury due to breakage of the anchor arms
► Only bend anchor arms of lamination anchors that are made of
steel.
► Avoid bending the anchor arms too strongly or too frequently.
► Use the 711S4* bending irons for bending.
5.1 Preparing for socket fabrication
Required materials: Hemispherical dummy, plaster screw,
>
99B81* PVA bag
1) NOTICE! Align the shuttle lock with the longitudinal axis of
the residual limb to prevent unnecessary load and wear
(2307228).
Position the hemispherical dummy on the distal surface of the
plaster model along the longitudinal axis of the residual limb and
loosely secure it with the plaster screw.
2) Pull a soaked PVA bag over the plaster model.
3) Fabricate the prosthetic socket (see page 11).
5.2 Fabricating the prosthetic socket
INFORMATION
The layup described in this document was approved for the maxim­
um product user body weight. The prosthetist assumes full respons­
ibility for any change to the layup.
5.2.1 Laminating a transfemoral socket
Required materials: 710D4 torque wrench, 711S4* bending
>
iron, 616G6 Dacron felt, 623T3 Perlon stockinette, 616B1 carbon
fibre cloth strap, 616G12 carbon fibre cloth, 616G4 fibreglass
mat, 616G15 carbon fibre woven hose, 99B81 PVA bag,
617H119 Orthocryl lamination resin 80:20 PRO
1) Cut 1 layer of Dacron felt to size and position it on the model.
2) Pull 2 layers of Perlon stockinette over the model and tie it off on
the hemispherical dummy.
3) Position 2 layers of carbon fibre cloth strap (width: 5 cm) circu­
larly 3 cm below the perineum.
4) Medially and laterally, position 1 layer of carbon fibre cloth strap
(width: 5 cm) respectively from the hemispherical dummy to the
socket brim.
5) Anterior and posterior, position 1 layer of carbon fibre cloth
strap (width: 5 cm) respectively from the hemispherical dummy to
the socket brim.
6) Position 4 strips (approx. 5 cm x 3 cm) of fibreglass mat on the
carbon fibre cloth strap to line the anchor arms.
7) Position 2 layers of carbon fibre cloth (e.g. 15 cm x 15 cm) offset
over the ischium containment.
8) Pull 2 layers of Perlon stockinette over the model and tie it off on
the hemispherical dummy.
9) Screw the shuttle lock fully into the lamination anchor and tighten
the screw of the threaded clamping (torque value: 10 Nm).
10) Position the lamination anchor on the hemispherical dummy.
11) Bring the lamination anchor arms to the correct a-p and m-l posi­
tion. Never align the threaded clamping in the anterior or posteri­
or direction.
12) Optional: Adapt the anchor arms of the lamination anchor to the
model with a bending iron.
13) Replace the shuttle lock with the lamination dummy (see
page 13).
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