A nickelzinc flow battery employs a solid suspension charge material to maintain high charge density via stability of a suspension including a binder, conductive carbon and an electrolyte. The apparatus includes at least one queue in connection with the at least one data port interface for receiving data transmitted to the at least one data port interface, and a memory management unit in connection with the at least one queue. A protective, sterile acoustic shell, which is intended to be used with a single patient and then discarded, is slipped over the applicator unit to protect against direct contact between the applicator unit and the patient and to maintain a sterile field at the site of the puncture.