Blood coagulation and living tissue sterilization by floating-electrode dielectric barrier discharge in air

摘要

Summary form only given. Thermal plasma discharges have been widely used in the past for treatment of living human and animal tissue. However, an extensive thermal damage and tissue desiccation occur due to extreme temperatures. Some solutions have been offered where the temperature is lowered by short current pulses, addition of noble gases, or significant decrease in the size of treatment electrodes. We propose a method of direct treatment of living tissue that occurs at room temperature and pressure without visible or microscopic tissue damage. The presented floating electrode dielectric barrier discharge (FE-DBD) plasma is proven electrically safe to human subjects and reported results show no gross (visual) or histological (microscopic) damage to skin samples in minutes, complete tissue sterilization from skin flora in seconds, and blood clot formation in seconds of electric plasma treatment. We also observe significant hastening of blood clot formation via electric plasma induced catalysis of "natural" processes occurring in human blood. Reported results are indicative of selectivity of FE-DBD plasma to inactivation of various foreign micro-organisms on human tissue with little to no influence on the tissue itself. An animal model (hairless mice) will be presented where we show complete sterilization of living animal tissue without any tissue damage even though skin layer of the treated animal is significantly more sensitive than that of a human. Comparison to second animal model (pigs) will also be presented