公开(公告)号：US11317960B2

公开(公告)日：2022-05-03

申请号：US16557447

申请日：2019-08-30

Applicant: OLYMPUS CORPORATION

Inventor： Tsuyoshi Hayashida ,  Yoshitaka Honda ,  Norihiko Hareyama ,  Ko Kawashima ,  Kenji Matsuki

IPC: A61B18/12 ,  A61B18/14 ,  A61B18/00

Abstract: A processor of an electric power source device exercises control over a power output before a control switching time point based on a value related to initial impedance, and determines the control switching time point upon detecting that a value related to impedance of a living tissue is at a minimum. The processor sets a set electric-power value of the power output based on a parameter related to controlling the power output before the control switching time point, and performs constant-electric-power control by controlling the power output using the electric-power value at and after the control switching time point.