Medical instrument, introduction tool and medical system

摘要

A treatment instrument 30 includes a power receiving unit 39 and a treatment section 32 configured to be driven by power received from the power receiving unit 39, the power receiving unit 39 having a first solenoid-shaped power receiving coil 31L and a second solenoid-shaped power receiving coil 31R having a winding direction, which is opposite to the winding direction of the first power receiving coil 31L, wherein the first power receiving coil 31L and the second power receiving coil 31R have the same length and the same number of turns and are arranged concentrically, and the first power receiving coil 31L and the second power receiving coil 31R are electrically connected to a treating section 32 are connected such that a direction in which a current flows through the first power receiving coil 31 L is opposite to a direction in which a current flows through the second power receiving coil 31 R.