Provided is a forceps device (1) including: an elongated body portion (11)； a pair of gripping pieces (12) that are provided at a distal end of the body portion (11), at least one of which possesses conductivity； a motive-power output portion (13a) that is provided at a base end of the body portion； a motive-power converting mechanism (14) that connects the pair of gripping pieces (12) and the motive-power output portion (13a), and that converts motive power output by the motive-power output portion (13a) into relative opening/closing motions of the pair of gripping pieces (12)； and an insulating member (15) that is provided in a pathway connecting the pair of gripping pieces (12) and the motive-power output portion (13a) via the motive-power converting mechanism (14).
