Negative Pressure Wound Therapy - Capital Foot and Ankle
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Negative Pressure Wound Therapy


Negative pressure therapy, commonly called VAC therapy, or simply a wound VAC, is an advanced dressing designed to help wounds heal faster.  Wound VACs are typically reserved for deep wounds or wounds over exposed tendons or bone.  Wound VACs are also used to hold skin grafts in place.

A wound VAC is a pump, connected to a dressing on a wound with tubing.  The pump is carried by an over-the-shoulder carrying case.  The tubing is typically run down the leg inside the pants.  The tubing then connects to the dressing.  When the pump runs, it creates a “vacuum” over the wound.  The “vacuum” will suck up drainage, but will also keep out bacteria and stimulate the wound to fill in faster.

Check out the video below for an in-depth look at how negative pressure therapy works!


– Increase rate of wound healing

– Decrease chance of infection

– Manage Drainage

– Eliminate need for self wound care


– Hassle of carrying around the pump

– Occasional noise of the pump

– Dressing changes need to be done by certified medical personnel 

How It Works

The pump is a small device with a suction canister connected to the tubing

The tubing will connect to the dressing to provide suction at the wound


Another negative pressure wound therapy is SNAP VAC.  This is a device similar to the wound VAC, however it is different in a number of ways.  First, the unit is much smaller.  This vacuum is caused by a spring, instead of a pump and doesn’t need to be charged.  It comes with a Velcro strap to secure around the calf, instead of the over-the-shoulder case.  The SNAP VAC can be more difficult to get insurance approval.  Ask your doctor if you qualify today!

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