Function; Maintenance - Blatchford EchelonVAC Instrucciones De Uso

4 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.
NB. if high hydraulic resistances are used such that they restrict ankle movement, the ability to
generate vacuum may be compromised.
The hydraulic body assembly is connected to a carrier assembly via two pivot pins. Heel and toe
springs are attached to the carrier assembly using titanium and stainless steel screws. The foot is
wrapped in a UHM PE sock which is in turn surrounded by a PU foot shell.

5 Maintenance

Maintenance must be carried out by competent personnel.
It is recommended that the following maintenance is carried out annually:
• Remove the foot shell and glide sock, check for damage or wear and replace if necessary.
• Check all screws for tightness, clean and reassemble as necessary.
• Visually check the heel and toe springs for signs of delamination or wear and replace if
necessary. Some surface damage may occur after a period of use, this does not affect the
function or strength of the foot.
The wearer should be advised:
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.
The user should be advised that a regular visual check of the foot is recommended, signs of wear
that may affect function should be reported to their service provider (e.g. significant wear or
excessive discoloration from long term exposure to UV).
Cleaning:
Use a damp cloth and mild soap to clean outside surfaces, do not use aggressive cleansers.
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