Abstract: The present invention relates to a portable low-frequency electrotherapy apparatus comprising a main body which comprises a universal serial bus (USB) port, a charging part to receive a charging voltage from the power pin of the USB port and a low-frequency signal generator electrically connected to a data pin of the USB port to supply a low-frequency signal through the data pin of the USB port; a low-frequency signal cable which comprises a low-frequency electrode connector at one end of the low-frequency signal cable electrically connected to the data pin of the USB port and an electrode pad at the other end to transmit a low-frequency signal to a human body; and a power cable which comprises a power supply connector at one end of the power cable electrically connected to the power pin of the USB port.

Abstract: The present invention relates to a probe for a local anaesthetic system, and more particularly, to a probe for a local anaesthetic system which cools a local area of the body to perform a local anaesthetic operation without difficulty. The present invention provides a probe for a local anaesthetic system which cools a local area to be anaesthetized, the probe comprising a cooling pad which has a heat conductive material and a predetermined contacting surface to contact an anaesthetic area; a heat capacity adding means which is liquid to increase a heat capacity of the cooling pad; and a thermoelement which is provided to emit a cool air to at least one of the heat capacity adding means and the cooling pad. The probe performs an anaesthetic operation without pain by instantly cooling a skin layer and blocking a transmission of a pain to the nerve, and performs an anaesthetic operation repeatedly and stably by raising a heat capacity of a cooling pad with a heat capacity adding means.