A brachytherapy device for the provision of brachytherapy is disclosed. During a second interval a reference signal is transmitted as a frequency modulated signal. The second information processing device stores access control policies applied to each of second objects. The fixing plate has two holding notches extending downward from both ends thereof for holding and positioning a rotation shaft. As the endoscope body is further advanced, the selected curves propagate proximally along the endoscope body, and when the endoscope body is withdrawn proximally, the selected curves propagate distally along the endoscope body.