Active Vacuum Socket Systems.
A comfortable socket is critical for an amputee to lead a full and active lifestyle. If the socket doesn’t fit comfortably, it can affect the health and wellbeing of the residual limb. Active vacuum solutions for transtibial (and transfemoral) amputees provide the ultimate socket comfort. By means of a pump unit, a vacuum is created between the suspension sleeve and the liner by the air being actively pumped out of the socket during an amputees' natural walking pattern. This vacuum makes for an unprecedented socket fit.
Studies have shown that active vacuum socket solutions prevent volume loss and minimise volume fluctuations in the residual limb throughout the day. The excellent connection between the prosthesis and the residual limb reduces tissue elongation and displacement, and thereby prevents limb/socket movements and improves proprioception. Furthermore, Studies carried out at St. Cloud State University in Minnesota (USA) have shown that a prosthetic fitting using this active vacuum solution promotes blood circulation in the residual limb.
The benefits of Active Vacuum.
Skin Protection
Movement within the socket can lead to sores and abrasions, but with active vacuum solutions, the residual limb is secured comfortably and securely within the socket. This ultimate socket fit reduces shear forces, meaning the skin is protected, minimising the risk of skin damage.
Active Vacuum Solutions from Ottobock.
Harmony P4 Vacuum System
The Harmony system provides an active vacuum to ensure a firm connection between the prosthesis and the residual limb. The Harmony P4 pump is especially suitable for active users.
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Discover more socket technologies.
Passive Vacuum
Passive vacuum, also referred to as a ‘one-way valve’, provides a high level of socket comfort when a vacuum is created between the suspension sleeve and the liner/skin. When you begin to walk, the air is driven out of the socket to form a solid connection.
Passive vacuum, also referred to as a ‘one-way valve’, provides a high level of socket comfort when a vacuum is created between the suspension sleeve and the liner/skin. When you begin to walk, the air is driven out of the socket to form a solid connection.
Pin Lock
This type of connection is formed between the socket and the residual limb via a pin at the end of the liner which locks into the bottom of the prosthetic socket. No suspension sleeve is required with this system.
This type of connection is formed between the socket and the residual limb via a pin at the end of the liner which locks into the bottom of the prosthetic socket. No suspension sleeve is required with this system.
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