• Categories:Press
• Author: Grel Xu
• Origin: Sengong
• Time of issue:2021-08-03
• Views:0

(Summary description)NPWT-Negative Pressure Wound Thepy is a new medical treatment since the 20th century, which is a method of drawing out fluid and infection from a wound to help it heal. A special dressing (bandage) is sealed over the wound and a gentle vacuum pump is attached.

The Negative Pressure method, applied as Vacuum sealing drainage (called VSD) and Vacuum assisted closure (VAC), can defintely make the wound treatment not a big problem. Your doctor may recommend NPWT if you have a burn, pressure ulcer, diabetic ulcer, chronic (long-lasting) wound, or injury. This therapy can help your wound heal faster and with fewer infections. NPWT is a good choice for some patients, but not all. Your doctor will decide if you are a good candidate for this therapy based on your type of wound and your medical situation.

Delayed wound healing particularly in difficult wounds and in elderly with co morbidities is a major concern. It leads to the pain, morbidity, prolonged treatment, and require major reconstructive surgery which imposes enormous social and financial burden. Vacuum-assisted closure (VAC) is an alternative method of wound management, which uses the negative pressure to prepare the wound for spontaneous healing or by lesser reconstructive options. Method of VAC application includes thorough debridement, adequate haemostasis and application of sterile foams dressing. A fenestrated tube is embedded in the foam and wound is sealed with adhesive tape to make it air tight. The fenestrate tube is connected to a vacuum pump with fluid collection container. The machine delivers continuous or intermittent suction, ranging from 50 to 125 mmHg. The VAC dressings are changed on 3rd day. Negative pressure therapy stabilizes the wound environment, reduces wound edema/bacterial load, improves tissue perfusion, and stimulates granulation tissue and angiogenesis. All this improves the possibility of primary closure of wounds and reduce the need for plastic procedures. VAC therapy appears to be a simple and more effective than conventional dressings for the management of difficult wound in terms of reduction in wound volume, depth, treatment duration and cost.

How does it work?

This therapy involves a special dressing (bandage), tubing, a negative pressure device, and canister to collect fluids.


Your healthcare providers will fit layers of foam dressing to the shape of the wound. The dressing will then be sealed with a film.
The film has an opening where a tube is attached. The tube leads to a vacuum pump and canister where fluids are collected. The vacuum pump can be set so that it is ongoing, or so it starts and stops intermittently.
The vacuum pump pulls fluid and infection from the wound. This helps pull the edges of the wound together. It also helps the wound heal by promoting the growth of new tissue.
When needed, antibiotics and saline can be pushed into the wound.




Now, we are working on the NPWT dressing market, Negative pressure wound dressings are used to close the surgical incision. Its use resulted in fewer surgical incision site infections and seromas than standard wound dressings. 

How is the dressing changed?

Having your dressing changed regularly is very important to your healing.


How often? In most cases, the dressing should be changed 2 to 3 times a week. If the wound is infected, the dressing may need to be changed more often.
Who changes it? In most cases, the dressing will be changed by a nurse from your doctor’s office or a home health service. This person will be specially trained to change this type of dressing. In some cases, a caregiver, family member, or friend may be trained to change the dressing.
What care needs to be taken? The person changing your dressing needs to do these things:

Wash hands before and after each dressing change.
Always wear protective gloves.
If they have an open cut or skin condition, wait until it has healed before changing your dressing. In this case, another person should change your dressing.


Does it hurt? Changing this type of dressing is similar to changing any other type of dressing. It may hurt a little, depending on the type of wound. Ask your healthcare providers for help with pain relief.


The NPWT dressing might become a hit on the medical market and a necessity among the wound management.