PROBLEM TO BE SOLVED: To provide a sphygmomanometer in which a flexible tube absorbs noises accompanying with an operation of each part and makes the noises not go into a microphone, and which thereby detects Korotkoff sounds and can correctly perform blood pressure measuring.SOLUTION: The sphygmomanometer 1 includes: an arm band section 2 which is mounted at an upper arm T of a person to be measured a pressurizing unit 110 which pressurizes the inside of the arm band section 2 a control unit 120 a pressure sensor 140 which detects pressure in the inside of the arm band section 2 pressure reducing unit 111, 112 which decompress pressure in the inside of the arm band section 2 and a display unit 63 which displays a measured blood pressure value. The sphygmomanometer receives a pressure signal from the pressure sensor 140, controls the pressurizing unit and the pressure reducing unit by the control unit 120, detects Korotkoff sounds, and measures blood pressure. A capacitor microphone 125 which detects Korotkoff sounds is prepared in a free end of the flexible tube 123, and the flexible tube 123 is connected with the arm band section 2 through an air filter 130 and a manifold 122.COPYRIGHT: (C)2012,JPO&INPIT【課題】可撓性チューブは、各部の動作に伴うノイズを吸収してマイクロフォンにノイズが入らないようにして、コロトコフ音を検出して正確に血圧測定が行える血圧計を提供する。【解決手段】被測定者の上腕Tに装着される腕帯部2と、腕帯部2内を加圧する加圧手段110と、制御手段120と、腕帯部2内の圧力を検出する圧力センサ140と、腕帯部2内の圧力を減圧する減圧手段111,112と、測定した血圧値を表示する表示部63を備え、圧力センサ140からの圧力信号を受けるとともに、制御手120段により加圧手段と減圧手段を制御してコロトコフ音を検出して血圧を測定する血圧計1であって、コロトコフ音を検出するコンデンサマイクロフォン125が、可撓性チューブ123の自由端内に設けられ、可撓性チューブ123は、エアフィルタ130とマニホールド122を介して腕帯部2に接続されている。【選択図】図12
