PROBLEM TO BE SOLVED: To provide a sphygmomanometer which can prevent the generation of environmental noise by informing a person to be measured that the environmental noise exists in the case that there is environmental noise when the person to be measured is measured his/her blood pressure, and can measure the blood pressure accurately by surely detecting a Korotkoff sound.SOLUTION: The sphygmomanometer includes: a microphone 50 that is arranged in an arm band section and detects the Korotkoff sound a controller 120 that is connected with the microphone 50, and determines whether there is the noise of a predetemined frequency range in a predetermined time in the measurement environment after the sphygmomanometer is operated and informing means 63 and 85 that inform that there is the noise by an instruction of the controller 120 when the controller 120 determines that there is noise.COPYRIGHT: (C)2012,JPO&INPIT【課題】被測定者が血圧測定をする際に環境ノイズが有る場合には、被測定者に対して環境ノイズが存在することを報知して環境ノイズを発生させないようにすることができ、コロトコフ音を確実に検出して正確に血圧測定できる血圧計を提供する。【解決手段】腕帯部に配置されてコロトコフ音を検出するマイクロフォン50と、マイクロフォン50に接続されて、血圧計を動作させた後に所定時間で測定の環境において予め定めた周波数範囲のノイズがあるか否かを判断する制御部120と、ノイズが有ると制御部120が判断した場合には、制御部120の指令によりノイズが有る旨を報知する報知手段63,85とを備える。【選択図】図5
