Testing The Vacuum System - Ottobock 4R180 Harmony P4 Instrucciones De Uso

Vacuum generation/damping adjustment
Required materials: Allen wrench 4 mm
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1) Disassemble the distal prosthetic components.
2) Screw in the adjustment screw in the distal end of the vacuum pump fully to the stop (see
fig. 13).
3) Loosen the adjustment screw as described in the adjustment table below.
4) Optional: To replace the elastomer rod, fully unscrew the adjustment screw. Repeat the
adjustment process after inserting a new elastomer rod.
5) Install the distal prosthetic components as described in the respective instructions for use.
Body weight [kg]
50 (110 lbs)
60 to 70 (132 lbs to 154 lbs)
80 to 90 (176 lbs to 198 lbs)
100 (220 lbs)
110 (242 lbs)
120 to 130 (264 lbs to 286 lbs)
140 to 150 (308 lbs to 330 lbs)
The optimal setting depends on the user's level of activity and requests. Loosen the adjustment screw of
the elastomer rod by a maximum of four (4) turns.
Rotation adjustment
Required materials: 636W46 Loctite 242
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1) Loosen the 2 set screws in the threaded ring.
2) Loosen the threaded ring using the pin wrench until the vacuum pump can be turned.
3) Adjust the rotation.
4) Use the pin wrench to tighten the threaded ring (torque: 50 Nm).
5) Apply Loctite to the two (2) set screws and screw them into the threaded ring (see fig. 12).
Screw in the set screws until they touch the lamination plate; then tighten them by half a turn.

5.7 Testing the vacuum system

First steps
If a socket connector is installed: Connect a vacuum gauge to the socket connector.
•
Without socket connector and vacuum gauge: The sealing sleeve is pulled to the socket brim by the
•
vacuum. Then the socket brim is clearly visible under the sealing sleeve.
• Ask the user to put on the prosthesis. Check the process to exclude errors during donning.
• Get the user to walk in order to build up a vacuum. Get the user to stand and check whether the vacuum is
maintained.
• If the vacuum is not maintained: Perform a systematic inspection of the prosthesis.
20
Adjustment table (turning out the elastomer rod)
Product
4R180, 4R181
4R181
To perform the check for leaks, the prosthesis is divided into
areas.
1
Area 1: Sealing sleeve and optional socket connector
•
Area 2: Connection to the vacuum pump
•
2
Area 3: Vacuum pump
•
3
Red rod Yellow rod
3
2.5
2
1.5
–
–
–
–
–
–
3
3
2.5
2