An Advanced System of Wound Healing

The V.A.C.® (Vacuum Assisted Closure™) assists in wound closure by applying localized negative (sub-atmospheric) pressure to help promote wound healing. Vacuum pressure is applied to a special dressing positioned in the wound cavity or over a flap or graft. This pressure-distributing wound packing helps remove fluids from the wound and promote the normal healing process.

V.A.C. Therapy uses an open-cell reticulated foam that can be cut to the shape of the wound(s), or can be placed side by side or layered to treat very large wounds. A tube embedded in the foam allows the application of vacuum pressure for the removal of excess wound fluid. The dressing and distal evacuation tube are covered by a transparent, occlusive drape that provides a seal which allows the application of vacuum pressure to the system.

The free end of the evacuation tube is attached to a canister reservoir which fits into a microprocessor-controlled vacuum unit and collects the fluids drawn away from the wound. The vacuum unit provides continuous or intermittent negative pressure selected to meet the needs of the wound being treated. The pressure can be adjusted within a range that has been demonstarted to provide optimal fluid removal without placing the delicate wound tissue at risk of injury.

The application of V.A.C. Therapy to a wound provides a moist wound-healing environment. A moist wound-healing environment is the standard of care for wound healing. Removal of excess interstitial fluid also can lead to removal of excess proteinases present in the periwound environment. Metalloproteinases are known to bind and degrade growth factors before the growth factor can reach it’s target tissue. With inhibitors removed, growth factors can stimulate cell proliferation and migration. Removal of excess interstitial fluid can naturally help decrease periwound induration (swelling) further helping to promote wound healing.

The evacuation of air from the open cells of the foam causes the foam to collapse on itself and provide a mechanical distraction, or stretching, of the soft tissues.


Indicated for patients who would benefit from a negative pressure feedback device, particularly as device use may promote wound healing.

Patients who would benefit from vacuum assisted drainage removal of infectious material or other fluids from wounds under the influence of continuous or intermittent negative pressure therapy.

V.A.C.® Freedom is indicated for:

  • Chronic open wounds (diabetic ulcers and stage 3 & 4 pressure ulcers)
  • Acute and traumatic wounds
  • Flaps and grafts
  • Subacute wounds
  • Dehisced wounds
  • Partial thickness burns


  • Non-enteric and unexplored fistulas
  • Necrotic tissue with eschar present
  • Osteomyelitis (untreated)
  • Malignancy in the wound
  • Do not place V.A.C. dressing over exposed blood vessels or organs

V.A.C.® Therapy™ Helps:

  • Promote granulation tissue formation through the promotion of wound healing
  • Uniformly draw wounds closed by applying controlled, localized negative pressure
  • Remove interstitial fluid allowing tissue decompression
  • Remove infectious materials
  • Provide a closed, moist wound healing environment