Wound Care Information Network











Negative Pressure Wound Therapy - NPWT


  • Negative pressure wound therapy has become a common wound care treatment modality.
  • It is used for a variety of wounds, including acute and chronic.
  • It is also used for things like graft fixation.
  • In general, clinicians who use NPWT have indicated that it helps wounds heal faster by pulling the edges together and also by filling in the wound from the bottom up, with granulation tissue.

How does it work?

  • There are a number of things which go into NPWT.
  • Typically, there is a pump that provides suction. Different manufacturers will recommend different settings. Also, clinicians have been able to tweak those settings for specific wound types or patients. It is common to hear about pressure settings from 70 mmHg up to 150 mmHg and even 200 mmHg in certain cases.
  • This therapy usually needs to be left on for most of the day, every day that treatment is prescribed.
  • In addition to the pump, you will need a way to connect the pump to the wound as well as wound dressings that provide a seal.
  • Once you have everything in place, the pump is turned on and you'll see contraction of the wound dressing material. A 'vacuum effect' for lack of a better word.
  • Some patients and clinicians describe pain or discomfort when the device is first turned on, but there are ways to reduce that.
  • New devices have come into the NPWT market, including syringe based and other mechanical devices that don't use power.

The Vendors

  • Scroll down for links

Precautions / Contraindications

  • NPWT is not used on all wounds and all patients.
  • Check with the manufacturer for a list of their specific contraindications and settings.

NPWT Devices Available (list is not comprehensive):


Product Manufacturer
Engenex ConvaTec
Invia Medela
Prospera PRO-I (various models) Prospera
Renasys (various models) Smith & Nephew
SNaP Spiracur
V.A.C. (various models) KCI


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