PROBLEM TO BE SOLVED: To provide an ultrasonic measuring apparatus that can measure a pulse pressure without preparing other measuring apparatuses such as a cuff blood pressure meter.SOLUTION: A first blood vessel diameter measurement value D1 is obtained by a first blood vessel diameter measuring part 4, and a second blood vessel diameter measurement value D2 is simultaneously obtained by a second blood vessel diameter measuring part 6 so that there is a height difference between the first blood vessel diameter measuring part 4 and the second blood vessel diameter measuring part 6. Moreover, regarding the second blood vessel diameter measurement value D2, a function f (D) indicating the relationship between a blood vessel diameter D and a pressure P is calculated by using a water load Ph of blood added to the first blood vessel diameter measurement value D1, the added water load being caused by the height difference by both measuring parts. Subsequently, the pressure P is calculated from the blood vessel measurement, and a pulse pressure value is calculated from maximum and minimum values of the pressure P.COPYRIGHT: (C)2013,JPO&INPIT【課題】カフ型血圧計など別の測定装置を用意しなくても脈圧を測定可能な超音波測定装置の提供。【解決手段】第1血管径測定部4と、第2血管径測定部6とに高低差を設けた状態で、第1血管径測定部4による第1血管径測定値D1を取得し、同時に第2血管径測定部6による第2血管径測定値D2を取得する。そして、第2血管径測定値D2には、第1血管径測定値D1に両測定部の高低差に起因する血液の水頭圧Phが加わることを利用して、血管径Dと圧力Pとの相関関係を示す関数f(D)を求める。以降、血管径測定から圧力Pを算出し、圧力Pの最大値と最小値とから脈圧値を算出する。【選択図】図1
