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Determining Properties of Wound Dressings for Negative Pressure Wound Therapy

Determining Properties of Wound Dressings for Negative Pressure Wound Therapy. Lora Aboulmouna, Lisa Lewicki, Ryan Frye. What is NPWT?.

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Determining Properties of Wound Dressings for Negative Pressure Wound Therapy

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  1. Determining Properties of Wound Dressings for Negative Pressure Wound Therapy Lora Aboulmouna, Lisa Lewicki, Ryan Frye

  2. What is NPWT? The application of sub-atmospheric pressure to a sealed wound for the purpose of removing fluid and stimulating a cellular response through the mechanical stretching of wound tissue.

  3. The way it works… • Material inserted into wound bed • Fluid drain tube • Sealant • Vacuum Applied (-50 to -200 mmHg)

  4. Wound Dressings KCI Foam Sorbact Gauze

  5. Project Goal • To determine the fluid dynamic properties of: • Sorbact • KCI Foam • Surgical Gauze used as negative pressure wound dressings.

  6. Variables • Pressure Gradient • Flow Rate • Material Resistance • Material Saturation

  7. Proposed Design Setup P1 P2 C1 Filter C2 Flow

  8. Alternate Proposed Design Flow Filter Flow meters Vacuum pump

  9. Future Directions • Determine more advantageous design • Meet with Dr. Fisher (Pioneer medical advisor) • Establish design specifications • Obtain materials

  10. References • Borgquist O, Ingemansson R, Malmsjö M. Wound edge microvascular blood flow during negative pressure wound therapy: examining the effects of pressuresfrom -10 to -175 mmHg. PlastReconstrSurg In press. • Ljungh, A, N Yanagisawa, and T Wadström. "Using the principle of hydrophobic interaction to bind and remove wound bacteria." Journal of Wound Care 15.4 (2006): n. pag. Web. 6 Nov 2010. • Smith, Jan, and Peter Robertsson. Method for Dressing a Wound. , 2010. Web. 27 Oct 2010. <http://www.google.com/patents/about?id=ApHVAAAAEBAJ&dq=sorbact> • "Science Behind the Therapy — KCI." Science Behind The Therapy. Web. <http://www.kci1.com/KCI1/sciencebehindthetherapy>.

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