Ottobock 4R220 Instrucciones De Uso página 28

5.3 Finishing the prosthetic socket
Required materials: mounting wrench, snap bushings, 617H46 silic­
>
one bonding agent, 633F30=2 Polylub GLY 801
1) Mark and trim the contour of the prosthetic socket.
2) Sand free the valve dummy and remove the Plastaband.
3) Unscrew the valve dummy and retain it. After fabricating the check sock­
et, the valve dummy is still required for the fabrication of the final pros­
thetic socket.
4) Remove the prosthetic socket from the plaster model.
5) Remove the piston dummy together with the silicone dummy from the
plaster model and insert into the cylinder so it is closed (see fig. 26).
6) Close the opening in the piston dummy with Plastaband.
7) Screw in the valve dummy (see fig. 27).
8) Sand the contour of the prosthetic socket.
9) Sand the distal end of the socket down to the heads of the cap screws
(see fig. 28).
10) Remove the cap screws.
11) Sand the distal end of the socket flat and check that its surface is even.
12) Remove any dirt from the 4 openings in the distal end of the socket. This
ensures that the snap bushings will lie flat against the cylinder body.
13) INFORMATION: The snap bushings must protrude approx. 1 mm
from the laminate. This ensures forces are transferred to the
Dynamic Vacuum System.
Apply silicone bonding agent to the snap bushings and insert them into
the openings with the groove end first (see fig. 29).
14) Unscrew the valve dummy.
15) Remove the piston dummy and silicone dummy from the prosthetic sock­
et.
16) Wipe out the cylinder space with a lint-free cloth.
17) Grease the cylinder space and O-rings of the valve bushing with the
supplied Polylub GLY 801.
18) NOTICE! Do not allow the duckbill valve to come into contact with
grease.
Insert the duckbill valve into the valve bushing with the pointed end first
(see fig. 30).
19) Screw the valve bushing into the prosthetic socket (torque value: 3 Nm).
20) Insert the piston into the cylinder to the stop (see fig. 31).
21) Insert the fixation ring into the thread of the cylinder and tighten it with
the mounting wrench (see fig. 32).
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