Vacuum-Assisted Closure (VAC) Wound Therapy
A special foam and seal are placed over the wound and controlled negative pressure is applied. It removes fluid, reduces swelling and supports healing.
VAC (vacuum-assisted closure), known medically as negative pressure wound therapy, is used to treat wounds that are hard to heal. A special foam is placed in the wound, sealed with an airtight film, and a small device applies controlled suction (negative pressure).
How does it work?
- Continuously removes excess fluid and discharge from the wound
- Reduces tissue swelling
- Draws the wound edges together
- Encourages new, healthy tissue (granulation tissue) at the wound base
- Protects the wound from the outside, helping to reduce infection risk
Which wounds is it used for?
- Diabetic foot wounds
- Wounds left open after surgical debridement
- Surgical wounds that have opened or become infected
- Large tissue losses after trauma
- Pressure ulcers
- Protecting skin graft sites
Who is it not suitable for?
VAC may not be suitable with untreated bone infection, cancer tissue in the wound, exposed major blood vessels or organs, a serious bleeding risk or dead tissue that has not been removed. The wound is assessed in detail beforehand.
The process
- The wound is cleaned and, if needed, surgically debrided.
- Foam cut to the shape of the wound is placed in it.
- It is covered with an adhesive, airtight film.
- Tubing from the film is connected to the device and the pressure is set.
- The foam and film are usually changed 2-3 times a week.
With portable devices, some patients can continue treatment at home. Treatment can last a few weeks depending on the wound. Once the wound is small enough, it is left to close on its own or closed with a skin graft.
The benefits of VAC
With traditional dressings, a wound may need to be opened every day or even several times a day. With VAC, the dressing is usually changed a few times a week, which means less discomfort for the patient and less exposure of the wound. Collecting the discharge in a closed system improves hygiene and quality of daily life.
Points to watch during treatment
For treatment to work, the device must run continuously and the film must stay airtight. If the device alarms, the seal may have opened or the tubing may be blocked; follow the instructions and contact the team if needed. Seek care without delay if you see blood in the canister, or develop fever or increasing pain.
Frequently asked questions
Is VAC therapy painful?
There is usually a mild pulling sensation while the device runs. Dressing changes can be uncomfortable, and pain relief is used if needed.
Can I carry on with daily life with the device?
With portable devices, many patients continue their daily activities. You will be shown how to use the device and what to watch for.
Does VAC heal the wound on its own?
VAC supports healing. It is used together with blood sugar control, improving circulation, treating infection and offloading.
Can I shower with the device on?
The device and dressing must not get wet. You will be given specific advice for bathing and personal care.
How long does VAC therapy last?
It depends on the size of the wound and how fast it heals. It usually lasts a few weeks, and the wound is closed by other methods once it reaches a certain stage.
Is the device noisy?
Modern devices are usually quiet. Alarms sound in situations such as a broken seal or a full canister.
The information on this page is general and does not replace an examination. An examination is needed to decide which treatment suits you.