Blatchford AvalonK2-VAC AVAC24L Instrucciones De Uso página 6

3 Function
The device comprises a hydraulic body assembly containing adjustable hydraulic valves. The
valves can be independently adjusted to increase and reduce hydraulic resistance of plantar
flexion and dorsiflexion.
The hydraulic body also houses a pneumatic chamber and piston which, via one-way valves
and a filter, creates a vacuum that can be passed via tubing to a prosthetic socket. For maximum
vacuum effect the check valve should be positioned close to the ankle. The number of steps
necessary to create an elevated vacuum will vary depending on the free space/air in the system.
The use of multiple socks may require an increased number of steps to reach an elevated
vacuum.
Note... If high hydraulic resistances are used such that they restrict ankle movement, the ability to
generate vacuum may be compromised.
The hydraulic body is connected to a carrier assembly via two pivot pins. A keel is attached to the
carrier assembly using stainless steel screws. The foot is wrapped in a UHM PE sock which is in
turn surrounded by a PU foot shell.
4 Maintenance
Maintenance must be carried out by competent personnel.
We recommend the following annual maintenance:
• Visually inspect the foot shell and glide sock, check for damage or wear and replace if
necessary
• Carry out vacuum system maintenance according to Section 4.1 and 4.2
There are no other serviceable parts in the foot assembly.
The wearer should be advised that any changes in performance of this device must be reported
to the practitioner.
Changes in performance may include:
• Increase in ankle stiffness
• Reduced ankle support (free movement)
• Any unusual noise
• Lack of vacuum
The practitioner must also be informed of:
• Any changes in body weight and/or activity level
• Discoloration of the residual limb
Cleaning
Use a damp cloth and mild soap to clean outside surfaces.
Do not use aggressive cleansers.
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