The output current is floating free of ground. This means that the patient ground is referenced to the ESU rather than earth ground. The machine is, in turn, referenced to earth ground via special circuitry that avoids alternate pathways. If the patient should inadvertently be placed in contact with another grounded object, this circuit will detect the loss of current and disable the ESU. It should be noted that if an ESU using isolated grounding circuitry is activated while the active electrode is not in contact with the patient, it is possible for alternate site burns to occur if the patient is in contact with a direct path to ground (i.e., a metal operating table), and the ESU is not equipped with a sentry circuit.
Jinhua Huacheng Medical Appliance Co.,Ltd.
Manufactuer of disposable medical products: Electrosurgical pencil,grounding plate,skin stapler and ECG electrode
