Avelle™ NPWT System
Negative Pressure Wound Therapy (NPWT)
NPWT - Mechanism of Action:2-3
- Reduction in tissue edema
- Wound contraction via applied strain
- Increased perfusion
- Stimulation of angiogenesis
- Formation of granulation tissue
*As demonstrated in-vitro.
- Locks in wound exudate and traps bacteria4-6 to help protect peri-wound skin and reduce
- Micro-contours to the wound bed, minimizing dead space where bacteria can grow.9*
- Balances wound fluid levels through gelling to maintain a moist wound healing environment.10*
Hydrofiber® Technology Gelling Effect
The Interactive Avelle NPWT Dressing
- Perforated silicone adhesive borders: Specifically designed to secure the dressing in place while being gentle to the skin during removal.
- Film layer: The backing film permits evaporation of exudate, aiding overall fluid handling while providing a bacterial, viral and showerproof barrier.11
- Foam layer: Aids distribution of negative pressure across the dressing and to the wound bed.
- Hydrofiber® Technology wound contact layer: Stitch-bonded Hydrofiber® wound contact layer gels on contact with wound fluid and is designed to maintain integrity on removal.11
- 8-Layered Hydrofiber® Technology: Gels on contact with wound fluid and locks in bacteria within it.11,12 Fenestrations in the Hydrofiber® Technology layers are designed to promote vertical fluid movement throughout the dressing.
- Soft-port: Designed to minimize the risk of pressure damage.
The Avelle NPWT Pump
The right NPWT pump and dressing combination can make the difference in supporting wound closure and aiding patient recovery.
Up to 30-day lifespan†
Versatile therapy delivery across care settings.
Single button operation
Ease of use, short learning curve.
Delivers 80 mmHg (±20 mmHg)
Continuous therapy delivered to the wound bed.
Patients can shower with the dressing in place by disconnecting the pump while maintaining NPWT for up to 1 hour.*
*As demonstrated in-vitro.
† Battery change may be required during pump lifetime
Continuous Negative Pressure
The Avelle™ NPWT System is designed to produce a continuous negative pressure of 80 mmHg (±20 mmHg) across the wound surface. In-vitro studies demonstrate13 that:
PROVEN: Negative pressure 80 mmHg (±20 mmHg) delivered through the hydrated Hydrofiber® Technology Dressing to the simulated wound bed through 4 layers of AQUACEL® Extra Dressing to a depth of 2 cm over 7 days.
Maintenance of Negative Pressure
In-vitro testing13 demonstrates one-way valve within the airway luer lock connector maintains pressure after removing the pump from the dressing after 1 hour ± 10 mmHg.
- Bishop SM, Walker M, Rogers AA, Chen WYJ. Moisture balance: optimizing the wound-dressing interface. J Wound Care. 2003; 12:125-128.
- 14. Borgquist O, Gustafsson L, Ingemansson R, Malmsjo M, 2009, Tissue In growth Into Foam but Not Into Gauze During NPWT, Wounds 2009; 21(11):302–309
- 15. Malmsjo M, Borgquist O. NPWT setting and dressing choices Made Easy. Wounds International 2010; 1(5)
- Waring MJ, Parsons D. Physico-chemical characterization of carboxymethylated spun cellulose fibres. Biomaterials. 2001; 22:903-912.
- Newman, G.R., et al., Visualization of bacterial sequestration and bactericidal activity within hydrating Hydrofiber wound dressings. Biomaterials, 2006. 27(7): p. 1129-39.
- Walker M, Hobot JA, Newman GR, Bowler PG. Scanning electron microscopic examination of bacterial immobilization in a carboxymethyl cellulose (Aquacel) and alginate dressings. Biomaterials. 2003;24(5):883.-890.
- Coutts P, Sibbald RG. The effect of a silvercontaining Hydrofiber dressing on superficial wound bed and bacterial balance of chronic wounds. IntWoundJ.2005;2(4):348-356.
- Robinson BJ. The use of a hydrofiber dressing in wound management. JWoundCare.2000;9(1):32-34.
- Jones S, Bowler PG,Walker M. Antimicrobial activity of silver-containing dressings is influenced by dressing conformability with a wound surface. WOUNDS. 2005; 17(9): 263-270.
- Parsons D, Bowler P, Myles V, Jones S. Silver antimicrobial dressings in wound management: A comparison of antibacterial, physical and chemical characteristics. Wounds.2005;17:222-232.
- Assessment of the in-vitro properties Avelle™ Negative Pressure Wound Therapy Dressing. WHRI4520 MS128. Data on file. 2015. ConvaTec.
- HFM-2015-017. Data on file. 2015. ConvaTec Inc.
- The in-vitro physical performance characteristics of the Avelle™ Negative Pressure Wound Therapy System Convatec Inc. AP-019221-MM.