Preparing The Product For Use; Adjusting The Adapter; Installation In The Modular Prosthesis - Ottobock 4R44 L Instrucciones De Uso

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5 Preparing the product for use

CAUTION
Incorrect alignment or assembly
Risk of injury due to damaged prosthetic components
► Observe the alignment and assembly instructions.
CAUTION
Improper assembly of the screw connections
Risk of injury due to breakage or loosening of the screw connec­
tions
► 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.

5.1 Adjusting the adapter

The threaded connector of the 4R44=L adapter is shortened accord­
ing to the patient measurements. A metal saw or lathe can be used to
shorten the adapter.
1) Clamp the adapter so that the thread being used remains undam­
aged (minimum thread depth: 8 mm for lamination anchor,
11 mm for 4R50).
2) NOTICE! Shorten the adapter at right angles to the longitud­
inal axis.
Shorten the thread of the adapter.
3) Deburr the cut edge without grinding a bevel on the thread.

5.2 Installation in the modular prosthesis

After shortening, the 4R44=L adapter is either screwed into the thread
of a lamination anchor or connected to the 4R50 adapter. Then the
remaining prosthesis components are assembled.
10
4R44=L with lamination anchor
>
Recommended tools: 710D20 torque wrench, 636K13 Loctite®
1) Screw the adapter completely into the thread of the lamination
anchor.
2) The adapter may be unscrewed by a maximum of 1/4 turn out of
the thread in order to align it.
3) Secure the cap screw of the threaded clamping using Loctite® as
described in the lamination anchor instructions for use.
4R44=L with 4R50
Recommended tools: 710D20 torque wrench
>
1) Align the pyramid receiver of the 4R44=L adapter distally.
2) Fully screw the 4R50 adapter onto the thread of the 4R44=L
adapter.
3) The adapter may be unscrewed by a maximum of 1/4 turn out of
the thread in order to align it.
4) Align the threaded clamping to the anterior and tighten the cap
screw (torque value: 13 Nm).
Connecting the pyramid adapter and pyramid receiver
The pyramid adapter is fixed with the set screws of the pyramid receiv­
er.
Required materials: torque wrench (e.g. 710D20), 636K13 Loc­
>
tite 241
1) Fitting:
Screw in the set screws.
Use the torque wrench to tighten the set screws (10 Nm).
2) Definitive assembly:
Secure the set screws with Loctite.
Screw in the set screws.
Pre-tighten the set screws with the torque wrench (10 Nm) and
then tighten them (15 Nm).
3) Replace any set screws that are protruding or are recessed too
much with appropriate set screws (see selection chart).

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4r50

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