Presentation Title

Performance Evaluation of a DBD Plasma Generator for Rapid Healing and Sterilization of Chronic Wounds

Faculty Mentor

Sohail H. Zaidi

Start Date

17-11-2018 8:30 AM

End Date

17-11-2018 10:30 AM

Location

HARBESON 24

Session

POSTER 1

Type of Presentation

Poster

Subject Area

engineering_computer_science

Abstract

Rapid healing and sterilization of chronic wounds will be beneficial to millions of patients across the country. Chronic wounds affect around 5.7 million people in the United States, incurring an estimated cost of $ 20 billion annually. Research presented here is based on the design of a DBD (Dielectric Barrier Discharge) plasma jet (patent US 9,433,071 B2) to sterilize and improve the wound healing process. Phase II of this project includes an improved version of Phase I probe. In contrast to Phase I design, new probe operates in a passive configuration where plasma characteristics can be varied as required (patent in process). Characterization of this probe includes measurement of plasma temperatures, input power, and plasma luminosity as a function of working gas (Helium) flow rates. Temperature along the plasma jet was measured using a K-type thermocouple and a flow meter was used to monitor the gas flow rates. Luminosity of the plasma plume, reflecting indirectly the degree of ionization and plasma temperatures, was captured by monitoring pixel-by-pixel intensity using an image that was analyzed through a MATLAB program. The impact of this plasma jet on a bacterial population was also investigated and for this purpose bacteria from a healthy donor’s skin flora was cultivated on goat agar. The plasma was then exposed to bacteria for different durations to estimate the degree of sterilization. To test the rate of blood coagulation, plasma was applied directly to blood droplets that were examined visually for differences when compared to blood without plasma contact. Blood droplets that had contact with the plasma, coagulated faster by forming a dark area quicker than blood without plasma interaction. Research work presented in this conference will include detailed results and an in-depth discussion on both plasma generator’s design and its performance characterization.

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Nov 17th, 8:30 AM Nov 17th, 10:30 AM

Performance Evaluation of a DBD Plasma Generator for Rapid Healing and Sterilization of Chronic Wounds

HARBESON 24

Rapid healing and sterilization of chronic wounds will be beneficial to millions of patients across the country. Chronic wounds affect around 5.7 million people in the United States, incurring an estimated cost of $ 20 billion annually. Research presented here is based on the design of a DBD (Dielectric Barrier Discharge) plasma jet (patent US 9,433,071 B2) to sterilize and improve the wound healing process. Phase II of this project includes an improved version of Phase I probe. In contrast to Phase I design, new probe operates in a passive configuration where plasma characteristics can be varied as required (patent in process). Characterization of this probe includes measurement of plasma temperatures, input power, and plasma luminosity as a function of working gas (Helium) flow rates. Temperature along the plasma jet was measured using a K-type thermocouple and a flow meter was used to monitor the gas flow rates. Luminosity of the plasma plume, reflecting indirectly the degree of ionization and plasma temperatures, was captured by monitoring pixel-by-pixel intensity using an image that was analyzed through a MATLAB program. The impact of this plasma jet on a bacterial population was also investigated and for this purpose bacteria from a healthy donor’s skin flora was cultivated on goat agar. The plasma was then exposed to bacteria for different durations to estimate the degree of sterilization. To test the rate of blood coagulation, plasma was applied directly to blood droplets that were examined visually for differences when compared to blood without plasma contact. Blood droplets that had contact with the plasma, coagulated faster by forming a dark area quicker than blood without plasma interaction. Research work presented in this conference will include detailed results and an in-depth discussion on both plasma generator’s design and its performance characterization.