Plasma Sterilization Device With Segmented Electrodes

The electrode is divided into multiple needle-shaped electrodes arranged in an array rather than using a single large electrode. This segmentation allows plasma to be generated at multiple discrete points that can be distributed across the sterilization target surface, enabling uniform sterilization of complex three-dimensional shapes while maintaining high sterilization capacity through the collective action of all electrodes

Each needle electrode generates plasma locally at its tip, creating localized high-density plasma regions. By arranging multiple such local plasma sources across the electrode array, the system achieves both local intensive sterilization at each needle tip and uniform overall sterilization coverage when all needles operate together, resolving the contradiction between sterilization capacity and uniformity

The system applies plasma discharge at multiple needle electrode locations simultaneously, where each electrode operates at moderate power levels. The cumulative effect of many partial plasma actions across the target surface achieves adequate overall sterilization effectiveness without any single location receiving excessive plasma energy that would cause damage to the sterilization target

By segmenting the total sterilization task across multiple needle electrodes, each electrode handles only a portion of the sterilization load. This distribution allows the system to achieve comprehensive sterilization coverage through additive effects while keeping the plasma intensity at each individual electrode low enough to prevent target damage