A patient-friendly clinical guide to wound vac therapy—how negative pressure wound therapy accelerates healing, which wounds qualify, and how Healix360-coordinated clinicians manage it safely in the home.
Healix360 supports access to advanced mobile wound care services. Care is coordinated and provided directly by licensed physicians and nurse practitioners experienced in the evaluation and management of chronic and complex wounds, including diabetic foot ulcers, pressure injuries, post-surgical dehiscence, venous leg ulcers, and non-healing traumatic wounds. From our headquarters in Glendale, California, our coordinators support patients across nine Southern California counties—Los Angeles, Orange, Riverside, San Bernardino, Ventura, Santa Barbara, Kern, San Luis Obispo, and San Diego—as well as the Las Vegas metropolitan area covering Clark and Nye counties in Nevada. Patients, families, and discharge planners can reach us at 877-545-1300.
A wound vac—short for wound vacuum, and known clinically as Negative Pressure Wound Therapy (NPWT)—is a system that applies controlled sub-atmospheric pressure to a wound through a sealed foam or gauze dressing connected by tubing to a small pump. Instead of leaving a deep or heavily draining wound to heal slowly under a conventional dressing, NPWT actively draws the edges of the wound together, removes excess fluid and bacteria, and stimulates the formation of healthy granulation tissue. When used within an evidence-based protocol, wound vac therapy can shorten healing time for the right wounds and reduce the frequency of dressing changes.
The device looks deceptively simple: a piece of foam cut to the shape of the wound, a transparent adhesive drape that seals it, a suction port, tubing, and a canister-equipped pump. Yet the biological effects of that continuous or intermittent negative pressure are substantial and well documented. NPWT works through several complementary mechanisms that together convert a stalled wound into one that is actively closing.
A wound vac is not just a fancy dressing—it is a mechanical therapy that actively remodels the wound bed, removes harmful fluid, and stimulates the growth of new tissue around the clock.
Negative pressure therapy is powerful, but it is not appropriate for every wound. Healix360-coordinated clinicians evaluate wound depth, drainage volume, tissue type, and perfusion before recommending it. NPWT is most valuable for deep, exudative, or complex wounds where the goal is to build granulation tissue and reduce volume.
NPWT is contraindicated or must be used with caution in certain situations. It should not be placed directly over exposed blood vessels, an untreated infection, necrotic tissue with eschar, or a malignancy within the wound. Wounds with inadequate arterial supply must have perfusion addressed first, because suction cannot heal tissue that lacks blood flow. Fistulas to organs or body cavities and untreated osteomyelitis also require resolution before therapy begins. Part of the value of a clinician-directed program is that these contraindications are identified before a device is ever applied.
Modern NPWT comes in two broad forms. Traditional durable NPWT uses a rechargeable pump with a replaceable canister and is well suited to large, high-output wounds. Single-use disposable NPWT is a smaller, ultra-portable device worn discreetly under clothing for lower-drainage wounds; it runs for several days and is then discarded. Some systems also offer instillation therapy, in which a cleansing solution is periodically introduced into the wound and then suctioned away to help manage bioburden in complex or infected wounds after the infection is controlled.
Pumps can deliver pressure continuously or in cycles. Continuous therapy is often used at the start, particularly for wounds with heavy drainage or when the seal is difficult to maintain. Intermittent or variable pressure can further stimulate granulation but may be less comfortable and is chosen based on the individual wound. The typical target pressure for most wounds is around negative 125 millimeters of mercury, though clinicians adjust this based on wound type, patient comfort, and tissue response.
One of the strengths of the Healix360 model is that NPWT can be initiated and maintained in the patient's home, assisted living apartment, or skilled nursing room—there is no need to travel to an outpatient wound center for routine changes. A dressing change usually takes 20 to 45 minutes.
When a wound vac is sealed correctly, the foam visibly compresses and takes on a wrinkled, raisin-like texture. If the foam looks soft and full, the seal has failed and the therapy is not working until it is corrected.
Patients and caregivers understandably have practical questions about daily life on NPWT. Modern pumps are portable, battery-powered, and can be carried in a shoulder bag or clipped to a belt, allowing patients to move around the home, sleep, and in many cases resume light daily activities. The pump has audible and visual alarms that signal a leak, a full canister, a blockage, or a low battery. Healix360-coordinated clinicians and the intake team teach patients and families how to respond to each alarm and provide a direct line for troubleshooting between visits.
Caregivers are taught to monitor the therapy and report changes promptly. Warning signs that warrant a call include a sudden increase in bright red drainage in the tubing or canister, a dressing that has lost its seal and cannot be restored, fresh bleeding, increasing pain, fever, or a foul odor. These signs do not always mean something is seriously wrong, but they should be evaluated rather than ignored.
The duration of NPWT depends entirely on the wound. Some post-surgical wounds need only one to two weeks to build enough granulation tissue for closure or grafting; large pressure injuries or complex diabetic wounds may require several weeks. Dressings are typically changed two to three times per week. Healix360-coordinated clinicians reassess at every visit, measuring the wound and adjusting the plan. When the wound has filled with healthy granulation tissue and is shallow enough to heal on standard dressings, NPWT is discontinued and care transitions to a conventional advanced dressing regimen.
"Families often ask how long the pump stays on. The honest answer is that the wound tells us. We measure at every visit, and the moment the wound is shallow and granulating well, we take the patient off the vac and move to a simpler dressing." — Healix360 Clinical Team
Negative pressure therapy is one tool among several. It is frequently combined with, or sequenced alongside, other modalities depending on the wound.
Medicare Part B and many commercial payers cover NPWT when it is medically necessary and properly documented—most commonly for qualifying diabetic ulcers, pressure injuries, and dehisced surgical wounds that have not responded to standard care. Coverage typically requires documentation of the wound type, prior conservative treatment, ongoing wound measurements demonstrating the need for therapy, and periodic reassessment. Healix360 intake coordinators verify benefits before therapy begins so patients understand any expected cost-share and supply logistics.
From the first call to 877-545-1300, our intake team gathers a focused wound history, confirms insurance, and arranges an initial evaluation in the patient's home or facility, often within 24 to 48 hours. The licensed physician or nurse practitioner assesses perfusion, infection status, and wound characteristics to confirm that NPWT is appropriate, obtains any required authorization, and coordinates delivery of the device and supplies. Clinicians then perform scheduled dressing changes, teach the family how to manage the pump between visits, and reassess progress at every encounter—escalating or discontinuing therapy as the wound dictates.
Most patients tolerate NPWT well once it is in place, and many report less pain because the wound is protected and drainage is controlled. Some feel a pulling or stretching sensation when the pump cycles, especially on higher settings. Dressing changes can cause brief discomfort, which your Healix360-coordinated clinician manages with gentle technique and, when needed, topical or local anesthetic. Pressure settings can also be adjusted for comfort.
Yes. Modern pumps are portable and battery-powered, so you can walk around the home, sleep, and perform light daily activities while carrying the device in a bag or clipped to your clothing. The pump has alarms for leaks, full canisters, and low battery. Your clinician and the Healix360 team will teach you how to manage the device day and night and how to respond to each alarm.
Wound vac dressings are usually changed two to three times per week, though the exact schedule depends on your wound and the amount of drainage. Healix360-coordinated clinicians perform these changes in your home or facility and reassess the wound at each visit. You and your caregiver only manage the pump and monitor for alarms between scheduled changes—you do not remove the sealed dressing yourself.
First, check the simple causes: confirm the pump is on and charged, the canister is not full, and the tubing is not kinked. If the foam looks soft and full rather than compressed, the seal has failed. Follow the troubleshooting steps your clinician provided, and call the Healix360 line for help. A leak that cannot be quickly fixed means the therapy has paused, so it should be addressed promptly rather than left overnight.
Medicare Part B and many commercial plans cover NPWT for medically necessary indications such as qualifying diabetic ulcers, pressure injuries, and dehisced surgical wounds that have failed standard care. Coverage requires documentation of the wound, prior conservative treatment, ongoing measurements, and reassessment. Healix360 intake staff verify your benefits before therapy begins and explain any expected cost-share and supply arrangements.
It depends on the wound. Some surgical wounds need only one to two weeks to granulate, while large or complex wounds may require several weeks. Your Healix360-coordinated clinician measures the wound at every visit and discontinues NPWT once the wound has filled with healthy tissue and is shallow enough to heal on standard dressings, at which point care transitions to a simpler advanced dressing regimen.
Call 877-545-1300 or request a provider to begin care. Healix360 serves Southern California and Nevada and accepts Medicare Part B and most major insurance plans.