| CPC A61B 18/1206 (2013.01) [A61B 18/0206 (2013.01); A61B 2018/00059 (2013.01); A61B 2018/00178 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/00916 (2013.01); A61B 2018/0256 (2013.01)] | 14 Claims |

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1. A drive device comprising:
a drive signal generator configured to generate a pair of drive signals for driving a high-frequency treatment tool that is electrically connected to the drive signal generator;
a pair of buffer circuits each configured to input respective ones of the pair of drive signals;
a pair of switching circuits configured to repeatedly turn on and off the pair of drive signals that are output from the pair of buffer circuits at a drive frequency for driving the high-frequency treatment tool or higher;
a first radiation material that has a longitudinal axis and that is arranged to face one of the pair of switching circuits;
a second radiation material that has a longitudinal axis and that is arranged to face another one of the pair of switching circuits;
a fan configured to generate an airflow; and
a casing configured to house the drive signal generator, the pair of switching circuits, the first radiation material, the second radiation material, and the fan,
wherein the pair of switching circuits, the first radiation material, and the second radiation material are positioned within a projection plane of the fan viewed along the longitudinal axes of the first radiation material and the second radiation material,
wherein the first radiation material is rectangular, and
wherein the fan is configured to simultaneously form airflows respectively along two outward-facing planes of the first radiation material and two inward-facing planes of the first radiation material.
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