Dynamic Vacuum System (DVS)
Our new and unique vacuum, an innovative system
The Dynamic Vacuum System (DVS) for transtibial amputees combines two important features integrating innovative technology with ease of use. DVS is an active vacuum system which adjusts itself to the needs of the patient in a dynamic manner. But what does that mean, and why does it offer significant advantages?
DVS generates a continuous vacuum in both swing and stance phase. This sets it apart from passive systems, such as one way valve systems, where a vacuum is only generated in the swing phase.
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Benefits at a glance
Easy to handle
Your certified prosthetist can easily integrate the DVS into your socket. Then all you need to do is put on the DVS Liner, slide into the socket, roll up the sealing sleeve and start walking.
Thanks to the permanent vacuum, the prosthesis is always held securely on the residual limb while walking. This improves stability when walking. You also have a better feel for the ground and your movements.
The vacuum dynamically adapts to your walking speed. When you walk faster, the vacuum increases. This makes the DVS suitable for many different everyday situations – for example when you have to hurry in order to catch the bus.
Thanks to the low weight of 210g and the low system height of 37mm, your certified prosthetist can integrate the DVS into the prosthesis with very good cosmetic results.
Movement within the socket can lead to sores and abrasions. With DVS, the residual limb is secured comfortably and intimately within the socket.
This ultimate socket fit reduces sheer forces, meaning the skin is protected, minimising the risk of skin damage.
For many amputees, ensuring the correct foot placement in every step and knowing the relative position of their prosthesis is critical in avoiding stumbles and falls. DVS enhances proprioception by allowing the patient to feel each movement through reduced pistoning and movement inside the socket. The brain then integrates information from proprioception and from the vestibular system into an overall sense of body position, movement and acceleration.
The pressure of blood circulation can cause volume fluctuations in the residual limb. The extent of the fluctuation depends on different factors such as the condition of the connective tissue, age of the patient, vascular diseases and of course, the type and fit of the socket. Active vacuum solutions keep the pressure constant and therefore maintain the volume of the residual limb, whereas simple one-way valves only release the amount of air the residual limb can press out. Although the suction created in this way provides a sufficient connection, it cannot prevent volume fluctuations in the residual limb. Even shuttle lock systems cannot prevent volume fluctuations. The connection is ensured as the prosthesis is secured by the pin.
As soon as you step into the prosthetic socket, a magnetic connection is established between the liner and the dynamic vacuum system integrated into the socket. Walking creates a pressure difference and therefore a flow of air from the socket to the dynamic vacuum system. This air is expelled to the outside when you step down. After just a few steps you generate a permanent vacuum – matched to your walking speed. Your prosthesis fits securely.
- Active Vacuum Solutions 13.91 MB | PDF
Active Vacuum Solutions
Active vacuum solutions for transtibial and transfemoral patients provides the ultimate socket comfort.