To request assistance to the other medical service worker without accompanying troublesome work by a medical service worker when there is a possibility that the medical service worker in response to an ME call needs assistance.SOLUTION: A nurse call master machine 3 includes: an ME call acquisition part 23 for acquiring an ME call signal output from medical equipment; an identification information acquisition part 22 for acquiring a medical service worker ID read by a reading device in a sickroom; a lapsed time measuring part 26 for measuring a lapsed time when one medical service worker ID read by the reading device related to the one room is acquired after an ME call signal related to the one room is acquired; and an assistance request notification part 27 for notifying a request of assistance of the other medical service worker when the one medical service worker ID is not again acquired even a lapsed time exceeds a prescribed time. When a prescribed time passes during an interval from room entrance to room exit by the medical service worker in response to an ME call, assistance can be automatically requested.SELECTED DRAWING: Figure 2【課題】ME呼出に対応する医療従事者が応援を必要としている可能性があるときに、その医療従事者による煩雑な作業を伴うことなく、他の医療従事者への応援が要請されるようにする。【解決手段】ナースコール親機3は、医療機器から出力されるME呼出信号を取得するME呼出取得部23と、病室の読取装置が読み取った医療従事者IDを取得する識別情報取得部22と、一の部屋に係るME呼出信号が取得された後、当該一の部屋に係る読取装置が読み取った一の医療従事者IDが取得された場合に、経過時間を計測する経過時間計測部26と、経過時間が所定時間長となっても当該一の医療従事者IDが再び取得されていない場合、他の医療従事者の応援を要請する報知を行う応援要請報知部27とを備え、ME呼出に応じて医療従事者が入室してから退室するまでの間に所定時間長が経過した場合に、応援を自動的に要請することができる。【選択図】図2