Patient learing about SNAP therapy
Single-use negative pressure wound therapy

Help put your patients on the path to healing and maintain their quality of life during their wound healing journey.


Snap Therapy System

The Snap Therapy System is a disposable negative pressure wound therapy (NPWT) system that combines the simplicity of advanced wound dressings with the proven benefits of NPWT in a discreet design. This customisable system can help your patients return to normal activities and maintain their quality of life.¹ The Snap Therapy System allows for patient mobility¹ and managing various wound types, including difficult anatomies.

  • Photo showing Snap

    Chronic wounds are a global challenge

    • Care of chronic wounds account for 3% of total health care expenditure.²

      Among the multiple causes of chronic wounds is the prevalence of chronic diseases, which can have a direct impact on the body’s natural ability to heal. While cardiovascular and immunodeficiency conditions can slow wound repair, diabetes creates some of the most significant challenges to wound management.

      • Majority of venous leg ulcers not adequately treated with standard of care for the wound type³
      • Up to 24% of diabetic foot ulcers will eventually lead to a lower extremity amputation⁴

      The Snap Therapy System is indicated for removal of small amounts of exudate from chronic, acute, traumatic, subacute and dehisced wounds, ulcers (such as diabetic, venous or pressure), surgically closed incisions, flaps and grafts.

Empowering positive outcomes with 3M single use, disposable NPWT products

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    Reduced time to closure

    Patients with lower extremity venous or diabetic ulcers were evaluated in a prospective observational and retrospective match controlled study. Patients using the Snap Therapy System with skin substitutes and skin grafts experienced a 50% absolute reduction in healing time versus modern dressing protocols including: Apligraf®, Rengranex®, and skin grafts.⁵

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    10-minute application time with Snap Therapy⁴

    Simple, cost-effective and convenient, the Snap Therapy System has an approximately 10-minute application time¹ and offers single-use, lightweight negative pressure wound therapy.

  • patient and clinician con on blue circular background
    Designed to meet the needs of clinicians and patients

    Simple to apply, it’s quiet, compact and easily worn under clothing. It helps maintain quality of life by minimising interference with patients’ activity, sleep, showering and social interactions.¹

  • icon showing cost savings
    Fewer dressing changes can translate to reduced costs*

    Low-contact care reduces dressing changes in diabetic and lower extremity wounds to a minimum of twice a week, supporting clinician’s goals.⁶

    Learn how Snap Therapy has been shown to save over $9,000 per wound treated ⁶ (PDF, 488 KB)

    *Outcomes were compared with 42 patient-matched controls treated at the same center with modern wound care protocols that included the use of Apligraf®, Regranex®, and skin grafting. 21 subjects completed treatment with the Snap Therapy System and with skin substitutes or skin grafts.

Disposable NPWT from the creators of 3M™ V.A.C.® Therapy

The Snap Therapy System includes dressings and accessories to help meet each patient’s unique needs for wound closure.

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    Silent exudate management with a canister

    Draws exudate away from the wound into the cartridge (60ml or 150ml options). A proprietary technology generates consistent, even levels of pressure and gels the exudate for improved containment and easy monitoring through the viewing window.

    • 3M™ Snap™ Therapy Cartridge
      Preserve patient quality of life with this small, lightweight and portable cartridge design. This cartridge holds 60ml and is available in three pressure settings: -125mmHg, -100mmHg and -75mmHg.

    • 3M™ Snap™ Plus -125mmHg Therapy Cartridge
      Preserve patient mobility with a disposable NPWT device that is discreet, quiet, compact and lightweight. This cartridge holds 150mL.

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    Proprietary hydrocolloid dressing offers periwound protection and easy removal

    Absorptive hydrocolloid properties help to maintain seal in the presence of exudate or sweat to help reduce periwound maceration.

    • 3M™ Snap™ Advanced Dressing Kit
      Address challenging anatomical wounds with customisable and flexible Hydrocolloid Advanced Wound Dressings in a variety of sizes.

    • 3M™ Snap™ Bridge Dressing Kit with SecurRing™ Hydrocolloid Skin Barrier
      Address difficult anatomical areas with flexible and customisable dressings that provide fast and easy sealing on uneven skin surfaces and challenging body contours. Kit includes 3M™ Snap™ SecurRing™ Hydrocolloid Skin Barrier to assist with fast and easy sealing on challenging body contours.

    • 3M™ Snap™ Bridge Dressing Kit
      Address difficult anatomical areas with flexible and customisable dressings that provide fast and easy sealing on uneven skin surfaces and challenging body contours. This kit does not include the 3M™ Snap™ SecurRing™ Hydrocolloid Skin Barrier, however, it can be ordered separately.

  • snap system accessories
    Simplify dressing applications and preserve patient mobility

Help patients get back to their lives

The Snap Therapy System combines the simplicity of advanced wound dressings with the proven benefits of negative pressure wound therapy in a discreet design. It’s fast to apply, and can be done in approximately 10 minutes so patients can quickly move on with their lives.¹

  • Enlarged image of all snap components on a patient leg
    • 1) Mechanically powered

      Proprietary spring mechanism generates consistent, even levels of pressure. No batteries and no lead wires to trip over.

    • 2) Cartridge

      Proprietary technology gels the exudate that collects in the cartridge, helping to contain and control potential contamination and odor. The visual display shows the amount of gelled fluid collected in the canister.

    • 3) Removes infectious material and exudate

      Exudate, infectious material and tissue debris are drawn away from the wound through the tubing into the canister.
      The Snap Therapy System draws exudate away from the wound into the cartridge, which uses a technology that turns the exudate into a gel to optimise containment.

    • 4) Sealed environment

      The dessing’s hydrocolloid properties help maintain a seal in the presence of exudate or sweat, offering periwound protection.¹

Manage a variety of chronic and traumatic wound conditions with Snap Therapy

  • Up to 24% of DFUs will eventually lead to a lower extremity amputation.⁴ When combined with offloading, Snap Therapy can effectively help manage DFUs. The management of DFUs has been shown to reduce the risk of amputations.⁴

  • Combine the simplicity of advanced wound dressings with the proven benefits⁷ of Snap Therapy to manage chronic VLUs. The management of VLUs has been shown to reduce the risk of recurring wounds.⁷

  • For smaller, lower-exudating wounds, Snap Therapy can be used as a first-line treatment or early adjunct therapy for pressure injury, including heels and the sacral area.

The Snap Therapy System maintains patients’ quality of life.¹

Case Study Excerpt: Diabetic amputation wound

  • 3M™ Snap™ Therapy System case study

    A 62-year-old female underwent partial amputations of the 2nd and 3rd ray -osteomyelitis found in the OR- due to infected gangrenous toes resulting from her neuropathic diabetes and peripheral vascular disease.

    The wound bed at the wound care center had become necrotic with exposed bone and calcified vessels. She underwent debridement and dressing changes with Dakin’s Solution® (quarter strength). After one month (approx.) of traditional wound therapy, the infection was cleared but remained a large wound with exposed bone and minimal granulation tissue.

    The wound bed achieved full granulation and complete soft-tissue coverage of exposed bone as a result of 4 and 6 weeks of treatment with the Snap Therapy System with bi-weekly dressing changes (Figures B and C). The wound was then closed with an advanced cellular matrix. Wound closure was achieved ten weeks post-initiation of the Snap Therapy System (Figure D).

    Figure A: Wound at start of 3M™ Snap™ Therapy System.
    Figure B: Development of granulation tissue after 4 weeks of 3M™ Snap™ Therapy System.
    Figure C: Further granulation tissue development after 6 weeks of 3M™ Snap™ Therapy System.
    Figure D: Wound fully healed 11 weeks post presentation.

    Photos courtesy of Armstrong DEG, Marston WA, Reyzelman AM, Kirsner RS.

    As with any case study, the results and outcomes should not be interpreted as a guarantee or warranty of similar results. Individual results may vary depending on the patient’s circumstances and condition.

  • Snap Case Study

    Explore a collection of cases including different wound types:

    CASE 1: Creative bridging technique with the 3M™ Snap™ Therapy System in the treatment of an atypical toe ulcer.

    CASE 2: Successful management of complex fistulating idiopathic granulomatous mastitis (IGM) with the 3M™ Snap™ Therapy System following debridement.

    CASE 3: The 3M™ Snap™ Therapy System in the healing of a scalp wound.

    CASE 4: Use of the 3M™ Snap™ Therapy System on a large lower back abscess.

    CASE 5: Wound closure with the 3M™ Snap™ Therapy System and concurrent chemotherapy and radiotherapy.

Woman looking out into a room

Hear what patients say about Snap Therapy

This video features a testimony from Christie Blom Duration: 2:08 min.

The Snap Therapy System has been shown to save over $9,000 per wound treated⁶

  • Total cost of wound care graphic

    In 2011, Hutton and Sheehan⁷ analysed costs and effectiveness of three therapies for treatment of diabetic lower extremity wounds: modern wound dressings, powered NPWT, and non-powered Snap Therapy System. An economic model using peer-reviewed data was used to simulate outcomes for the different treatments.

    Based on the model, Hutton and Sheehan reported that, compared to modern dressings, Snap Therapy System saved over $9,000 per wound treated⁶  by avoiding longer treatment times and increased costs for complications, and healing more wounds than the modern dressings. The authors concluded that, in addition to cost savings, Snap Therapy System also allowed patients greater mobility.⁶

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Application guides and resources for Snap Therapy

  • 3M™ Snap™ Therapy System Application & Mechanism of Action Video
    Snap Therapy System Application and Mechanism of Action Video

    This video demonstrates the mechanism of action for Snap Therapy.

    Video 4:21 min

  • 3M™ Snap™ Bridge Dressing Application Video
    Snap Bridge Dressing Application Video

    This video demonstrates the application of the Snap Bridge Dressing.

    Video 5:22 min

  • 3M™ Snap™ Advanced Dressing Application Video
    Snap Advanced Dressing Application Video

    This video demonstrates the application of the Snap Advanced Dressing.

    Video 4:21 min

  • 3M™ Snap™ Therapy System Detailed Application Video
    Snap Therapy System Detailed Application Video

    This video includes detailed application of the Snap Therapy System.

    Video 8:57 min

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Helping you develop your skills

Discover online learning that's right for you and deepen your clinical expertise with training opportunities and educational resources available on the 3M℠ Health Care Academy. 3M webinars and archived events can help keep you up to date with the latest product guidelines and scientifically supported standards of care.

View courses Arrow Hollow Right Icon

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Ready to try Snap Therapy?

See how our combination of products and technology can help you manage wound care the smart way.


Explore additional 3M Negative Pressure Wound Therapies

  • 3M™ V.A.C.® Therapy

    3M™ V.A.C.® Therapy has been shown to be a successful way to manage wounds for the past 25 years⁹. It can be used to reduce hospitalisation time and the risk of complications⁹,¹⁰ which in turn helps facilitate patient transitions from inpatient to outpatient care settings.

    Learn more about V.A.C.® Therapy

  • Veraflo Therapy combines the benefits of NPWT with automated instillation and dwell of topical wound solution to provide simulateous cleansing and granulation tissue formation.¹¹,¹²

  • Prevena Therapy is the first single-use negative pressure therapy system designed for the management of closed incisions in patients at risk of postoperative complications, including infection. 

  • AbThera Therapy incorporates all the functional elements of an optimal temporary closure device to help protect abdominal contents from the external environment, allowing rapid access for re-entry, medial tension, and fluid removal.

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Looking for more information?

  • We are here to help! Get in touch with our customer support team for advice about our products and how to use them.

  • View our advanced wounds and Negative Pressure Wound Therapy and I.V. dressings portfolios and browse our product catalogue.

  • Find Instructions for Use for specific 3M Health Care products.

  • Find answers to the most frequently asked questions regarding 3M Health Care.

Note: Specific indications, contraindications, warnings, precautions and safety information exist for these products and therapies. Please consult a clinician and product instructions for use prior to application. This material is intended for healthcare professionals.


  1. Armstrong DG, Marston WA, Reyzelman AM, Kirsner RS. Comparative effectiveness of mechanically and electrically powered negative pressure wound therapy devices: a multicenter randomised controlled trial. Wound Rep Reg 2012; 20(3):332-341.
  2. Järbrink, K., Ni, G., Sönnergren, H. et al. The humanistic and economic burden of chronic wounds: a protocol for a systematic review. Syst Rev 6, 15 (2017).
  3. Fife CE, Carter MJ, Walker D. Why is it so hard to do the right thing in wound care? Wound Repair Regen. 2010 Mar-Apr;18(2):154-8.
  4. Pemayun T et al. Risk Factors for lower extremity amputation in patients with diabetic foot ulcers: a hospital-based case-control study.
  5. Lerman B, Oldenbrook L, Eichstadt SL, Ryu J, Fong KD, Schubart PJ. Evaluation of chronic wound treatment with the SNAP™ Wound Care System versus modern dressing protocols. Plastic and Reconstructive Surgery. 2010 Oct;126(4):1253-61.
  6. Hutton DW, Sheehan P. Comparative effectiveness of the SNAP™ Wound Care System. Int Wound J 2011; 8: 196-205.
  7. Marston WA et al. A Multicenter Randomized Controlled Trial Comparing Treatment of Venous Leg Ulcers Using Mechanically Versus Electrically Powered Negative Pressure Wound Therapy. Advances in Wound Care 2015; 4(2): 75–82.
  8. Blume PA, Walters J, Payne W, Ayala J, Lantis J. Comparison of negative pressure wound therapy using vacuum-assisted closure with advanced moist wound therapy in the treatment of diabetic foot ulcers: a multicenter randomized controlled trial. Diabetes Care. 2008;31:631-636.
  9. Law A L Krebs B. Karnik B. Griffin L. Comparison of Healthcare Costs Associated With Patients Receiving Traditional Negative Pressure Wound Therapies in the Post Acute Setting. Cureus 12(11): e11790. DOI 10.7759/cureus.11790.
  10. Page JC, Newsander B, Schwenke DC, Hansen M, Ferguson J. Retrospective analysis of negative pressure wound therapy in open foot wounds with significant soft tissue defects. Adv Skin Wound Care/ 2004;17(7):354-364.
  11. Lessing C, Slack P, Hong KZ, Kilpadi D, McNulty A. Negative Pressure Wound Therapy With Controlled Saline Instillation (NPWTi): Dressing Properties and Granulation Response In Vivo. Wounds. 2011 Oct;23(10):309-19. PMID: 25881108.
  12. Carroll C, Ingram S, Comparison of Topical Wound Solutions for Negative Pressure Wound Therapy with Instillation: Effect on Granulation in an Excisional Non-Infected Acute Porcine Wound Model, Poster Presentation at SAWC, Oct 2017.
  13. Data pulled January 1, 2020-August 31, 2020
  14. 3M.iOnHealingOrderstoRelease_Sept2020_InternalReport. 25SEP2020.
  15. Griffin L, Leyva Casillas LM. A Patient-centered Remote Therapy Monitoring Program Focusing on Increased Adherence to Wound Therapy: A Large Cohort Study. Wounds. 2018 Aug;30(8):E81-E83.