Ottobock 4R220 Instrucciones De Uso página 27

6) Pull the perlon stockinette over the plaster model to the edge. Tie off the
second half of the perlon stockinette with the string and fold it over the
plaster model (see fig. 23).
7) Soak the longer PVA bag and pull it over the plaster model (see fig. 24).
8) Perform the casting process with Orthocryl. Because of the 6 layers of
perlon stockinette, approx. 30 % more Orthocryl is needed.
9) Once the lamination resin is sufficiently distributed: Displace
excess lamination resin in the area of the cylinder body to the distal end
by wrapping with polyethylene adhesive tape. Wrap tightly so the system
becomes airtight.
10) Allow lamination resin to cure.
11) Finish the prosthetic socket (see Page 27).
5.2.3 Finishing the Prosthetic Socket
Required tools and materials:
>
Assembly wrench, snap bushings, 617H46 silicone bonding agent,
636K13 Loctite® 241
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.
4) Remove the prosthetic socket from the plaster model.
5) Remove the piston dummy and silicone dummy from the plaster model
and insert into the cylinder so it is closed (see fig. 25).
6) Close the opening in the piston dummy with Plastaband.
7) Screw in the valve dummy (see fig. 26).
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. 27).
10) On a level surface, check whether the sanded surface is flat. Rework as
needed.
11) Remove the cap screws.
12) INFORMATION: The proximal side of the snap bushings is marked
with a notch.
Apply silicone bonding agent to the snap bushings and insert them into
the openings from which the cap screws were removed (see fig. 28).
13) Unscrew the valve dummy.
14) Remove the piston dummy and silicone dummy from the prosthetic sock­
et.
15) If necessary: Wipe out the cylinder space with a lint-free cloth.
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