US Patent 9962220 Modular aesthetic treatment handpiece

A modular energy application device for skin tissue treatment includes a first module, the first module including one or more skin treatment electrodes oriented on a surface to contact the skin tissue; a device to connect the first module to a source of electrical power and control; at least a second module, the second module including one or more treatment electrodes oriented on a surface to contact the skin tissue; a connection device to couple the first and the second modules; an electrical connection device to electrically couple the first and second electrodes; electrical power applied to the electrodes of the first module also applies electrical power to the electrodes of the second module.