Installing The Harmony 4R134, 4R135, 4R144 And 4R150; Installing The Barbed Socket Connector; Attaching Socket And Adapter To Harmony; Attaching Pylon To Harmony - Ottobock Harmony 4R144 Instrucciones De Uso

Vertical and Rotational Shock Absorption in the 4R144 and 4R150
Vertical shock absorption can be adjusted by the prosthetist by increasing or decreasing the compression of the
elastomer rod. Rotational shock absorption is made possible by elastomer plates, which are not field serviceable.
Vertical Shock Absorption in the 4R133, 4R134 and 4R135 can be adjusted by increasing or decreasing the
amount of air pressure in the unit.

4.0 Installing the Harmony 4R134, 4R135, 4R144 and 4R150

Note: Failure to use the Harmony with a properly fitting Harmony socket system can compromise the limb, liner,
and the Harmony pump.

4.1 Installing the Barbed Socket Connector

Note: To fabricate an airtight, laminated socket, blister-form a 3 mm PETG plastic sheet (575=1) as the first layer
in the definitive socket lay-up.
To ensure an airtight system you must create an airtight channel between the Barbed Socket Connector and the
interior of the socket. We recommend the following technique.
Prepare a channel in the socket by drilling a 3/8" (10 mm) hole in either the distal end or the posterior socket wall.
Fill with five minute epoxy. Once epoxy has hardened, drill a 7/32 (5.5 mm) hole through the middle of the epoxy
(Fig. 6). Use the Barbed Socket Connector to tap the hole, then remove and apply 5 minute epoxy to the threads,
reinsert and hand tighten.

4.2 Attaching Socket and Adapter to Harmony

Pyramid Adapter style: Harmony 4R144
Tighten the set screws of the receiver onto pyramid and torque to 15NM (or to the manufacturer's specification if
not an Otto Bock component). Use Loctite® 242 on screws for final adjustment.
4-Bolt Pattern Style: Harmony 4R134, 4R135 and 4R150
The Harmony 4R134, 4R135 and 4R150 pumps have a 4-bolt pattern on top for connecting the appropriate male
or female adapters to the socket (i.e. 4R77, 4R23 or 4R51). Use the provided Cap Head Screws and connect the
adapter to the Harmony. For final adjustment, apply Loctite® 242 to screws and torque to 115 in‑lbs (13NM).

4.3 Attaching Pylon to Harmony

30mm Tube Clamp (4R144): Insert the 2R2 pylon into tube completely. Torque the tube clamp screw to 88 in-lbs
(10 Nm) for the final adjustment.
Female Pyramid Receiver Style (4R135 and 4R150): Tighten the set screws of the pyramid receiver onto the
attachment and torque to 133 in-lbs (15Nm.). Use Loctite® 242 on screws for final adjustment.
34mm Tube Clamp (4R134): Insert 2R76 pylon into tube clamp completely. Torque the tube clamp screw to 44
in-lbs (5 Nm) for the final adjustment.

4.4 Connecting the Vacuum Line

To connect the Vacuum Line to the socket, cut line to length proximally, moisten end of line, slide Retention Collar
over Line, attach Line to Barbed Socket Connector, and slide Retention Collar into place (Fig. 7).

5.0 Installing the Harmony 4R133

5.1 To remove original shock, remove the cap head screw from the housing of the foot with a 4mm Allen wrench.
5.2 Push the pin through the shock and remove shock.
5.3 Repeat steps 5.1 and 5.2 for the other end of the shock.
5.4 Remove the original shock from the housing of the foot.
5.5 Remove the washers from the original shock.
5.6 Remove the bushings from the original shock and insert bushings in the Harmony 4R133.
8 | Ottobock Harmony