Replacing The Functional Ring - Otto Bock Harmony P3 Technical Information

Procedure
Functional ring reference no.
4X147=0
4X147=1
4X147=2
4X147=3
4X147=4
4X147=5
4X147=6
4X147=7

3.6.4 Replacing the functional ring

Objective
18 | Ottobock
2
1
Body weight
[kg]
40 to 47
48 to 55
56 to 65
66 to 75
76 to 87
88 to 100
101 to 112
113 to 125
New functional rings are very stiff. Ottobock recom­
mends pre-compression to ensure that they work cor­
rectly.
No pre-compression is necessary with the pre-installed
functional ring and with compressed units.
Open the pre-compression device and insert the func­
tional ring.
Tighten the screw of the pre-compression device up to
the stop in order to compress the functional ring com­
pletely.
Compress the functional ring from at least 3 minutes to
at most 15 minutes.
Open the pre-compression device and remove the func­
tional ring.
Loosen the tube clamp of the Harmony P3 unit. Remove
the tube adapter with the prosthetic foot.
Unscrew the retaining screw (1) on the distal end of the
Harmony P3 unit.
Pull the base (2) down distally.
Remove the current functional ring.
Put the new, pre-compressed functional ring on. The
structure of the functional ring only allows attachment in
the correct alignment.
Put the base on.
Secure the retaining screw with Loctite® 241 (636K13)
and screw it in (tightening torque: 7 Nm).
Reattach the tube adapter with the prosthetic foot.
[lbs]
88 to 103
104 to 121
122 to 143
144 to 165
166 to 192
193 to 220
221 to 247
248 to 276
Harmony System