A treatment assembly can have an inner layer having an inner surface and an outer surface and defining a plurality of openings extending therethrough. The treatment assembly can further comprise a plurality of plates, each plate being at least partially received within a respective opening of the plurality of openings of the inner layer. The treatment assembly can further comprise treatment circuitry comprising a cable having a plurality of electrical leads and a plurality of lead ends, each electrical lead being electrically connected to a respective lead end of the plurality of lead ends. A cover layer can be attached to the outer surface of the inner layer and overlie the plurality of lead ends of the cable. The plurality of lead ends can be in contact with respective plates of the plurality of plates to define a plurality of electrodes.