Joint Assembly NEURO SWING H2O

Joint Assembly

NEURO SWING H2O System Ankle Joint

This online tutorial shows the joint assembly of the NEURO SWING H2O system ankle joint. It also provides step by step explanations on how to use the associated materials such as primer and 2-component-adhesive. You will find further information in the manual of the NEURO SWING H2O.

 Joint Assembly NEURO SWING H2O

Step 1/18

Clean the system joint.

Step 2/18

Use the delivered cotton swab and apply some primer to the adhesive surface in the joint case for the system anchor. Allow the primer to flash off for about
15-30 seconds.

Step 3/18

Inject a sufficient amount of the 2-component adhesive in the joint case using the delivered dual-chamber syringe.
Note: Mind the safety data sheet when using the 2-component adhesive.

Step 4/18

Immediately stick the (cleansed) system anchor as far as possible into the joint case.

Step 5/18

Hold the joint in such a way that the surplus adhesive can run out. Let the adhesive harden at about 23°C room temperature for about 30 minutes.
Note: The lower the temperature, the longer the adhesive needs to harden.

Step 6/18

Surplus adhesive accumulates on the sticker on the joint’s back. Remove the removable sticker as well as possible adhesive residues from the joint case.

Step 7/18

Grease the sliding washers slightly on both sides with the delivered orthosis joint grease.

Step 8/18

Place the two greased sliding washers on both sides of the system stirrup. Place the system stirrup from below into the joint case.
Note: Push the sliding washers somewhat over the system stirrup’s upper edge in order to facilitate the assembly.

Step 9/18

Check if the sliding washers fit well and correct the position with the sliding washer centring pin, if necessary.

Step 10/18

Grease the friction surfaces of the bearing nut slightly with the delivered orthosis joint grease. Make sure that the thread is grease-free.

Step 11/18

Put the bearing nut into the intended opening of the joint case's backside and make sure it is in the correct position.

Step 12/18

Place the cover disc onto the joint case's front. Turn in the countersunk flat head screw with a torque which corresponds to the system width.
Note: You can find information on the torque (Nm) for all system widths in the manual of the relevant system joint.

Step 13/18

Bring the system joint in plantar flexion/dorsiflexion. If the joint does not move freely, mount the next thinner sliding washers, repeat all steps from slide 7 onwards and check again.
Note: Check if the joint moves freely before mounting the spring units. At a bilateral orthosis, only check one system joint at a time.

Step 14/18

Hold the tibial shell and try to move the foot shell in pronation-supination direction. If the joint runs with lateral play, mount the next thicker sliding washers, repeat all steps from slide 7 onwards and check again.
Note: Check if the joint runs with lateral play before mounting the spring units. At a bilateral orthosis, only check one system joint at a time.

Step 15/18

Secure the screw of the joint’s upper part with LOCTITE® 243 medium strength and the torque corresponding to the system width. Let the adhesive harden (final strength after approx. 24 hours).
Note: You can find information on the torque (Nm) for all system widths in the manual of the relevant system joint.
Note: Mind the safety data sheet  when using LOCTITE® 243 medium strength.

Step 16/18

Insert one spring unit in the anterior spring duct. Turn in the spring unit until the required alignment of the orthosis is achieved. At a bilateral orthosis with two NEURO SWING H2O system joints, mount each system joint’s anterior spring unit and make sure that both system joints are adjusted alike.
Note: Check the joint angle by reading the markings on the system stirrup and joint case.

Step 17/18

Turn in one spring unit in the posterior spring duct until it touches the system stirrup. At a bilateral orthosis with two NEURO SWING H2O system joints, mount each system joint’s anterior spring unit and make sure that both system joints are adjusted alike.
Note: Check the joint angle by reading the markings on the system stirrup and joint case.

Step 18/18

Bring the system joint in plantar flexion/dorsiflexion. It should move by compression of the spring unit only. At a high spring force, it might be impossible to cause any movement manually. If the system joint still runs idle, carefully turn the posterior alignment screw further in.
Check the result.