Abstract:
A treatment instrument includes a power receiver and a treatment section configured to be driven by power received by the power receiver. The power receiver includes a first solenoid-shaped power receiving coil and a second solenoid-shaped power receiving coil having a winding direction opposite to a winding direction of the first power receiving coil. The first power receiving coil and the second power receiving coil have the same length and the same number of turns, and are arranged concentrically. The first power receiving coil and the second power receiving coil are electrically connected to a treatment section so that a direction in which a current flows through the first power receiving coil is opposite to a direction in which a current flows through the second power receiving coil.
Abstract:
A treatment device comprises: a power reception coil having a solenoid shape that is inductively coupled with a power transmission coil that generates an AC magnetic field, and receives an electric power wirelessly; a treatment portion that treats a subject with the electric power received by the power reception coil; a horn inserted through an inside of the power reception coil; and a magnetic flux concentration member that is made of a soft magnetic material and secured inside of the power reception coil.
Abstract:
An endoscope system having: an endoscope having: an endoscope insertion section configured to be inserted into a subject, wherein the endoscope insertion section defines a channel having a distal opening; and a power transmission electrode arranged to the endoscope insertion section and electrically connected to a power source configured to output a high-frequency power; and a treatment tool having: an electrically powered treatment device; a treatment tool insertion section attached to the electrically powered treatment device, wherein the treatment tool insertion section is configured to be arranged in the channel of the endoscope; and a power reception electrode arranged to the treatment tool insertion section, wherein the power reception electrode is separated from the power transmission electrode to form a capacitor to transfer power from the power source through an electric field between the power transmission electrode and the power reception electrode to power the electrically powered treatment device.
Abstract:
A lens frame unit includes a lens frame body that houses an optical member, a heat transfer unit that covers at least part of the lens frame body, a heat-generating unit, a temperature measurement unit that measures temperature and a same single electrical wiring board on which the heat-generating unit and the temperature measurement unit are mounted. The heat-generating unit and the temperature measurement unit are arranged on the electrical wiring board so as to be separated from each other, and the electrical wiring board is disposed such that the heat-generating unit and the temperature measurement unit are in contact with the heat transfer unit. Thermal resistance between closest positions of the heat-generating unit and the temperature measurement unit is greater than thermal resistance between the heat-generating unit and the heat transfer unit, and between the temperature measurement unit and the heat transfer unit.