PROBLEM TO BE SOLVED: To provide a fluid pressure measuring device capable of easily and simply performing calibration without using another pressure instrument in the measurement of fluid pressure for an object to be measured, especially when measuring fluid pressure in a living body, or pressure of a blood flow (blood pressure).SOLUTION: A fluid pressure measuring device equipped with at least two measurement parts 6 and 8 measures the velocity of fluid that flows in a conduit present at an object to be measured and a conduit diameter, finds a difference between the maximum value and the minimum value of the fluid pressure derived based on a water head difference derived based on an amount of change in the conduit, a difference in the conduit diameter between the one measurement part and the other measurement part, and a difference between the two measurement parts 6 and 8, derives a coefficient value based on the difference value, the fluid velocity value and diameter value at the one or the other measurement part 6 or 8, and finds the pressure of the fluid that flows in the conduit.COPYRIGHT: (C)2014,JPO&INPIT【課題】被測定対象の流体圧測定をする場合、特に生体内の流体圧すなわち血流の圧力(血圧)を測定する場合に、他の圧力計を使わず簡易に校正ができる流体圧測定装置を提供する。【解決手段】流体圧測定装置は、測定部6,8を少なくとも2つを備え、測定対象部に内在する導管内を流動する流体速度及び導管径を測定し、導管の変化量、前記一方の測定部と前記他方の測定部での導管径の差、及び前記2つの測定部6,8の間の距離に基づいて導き出される水頭差に基づいて導き出される、流体圧の最大値と最小値との差分を求め、前記差分値と、前記一方あるいは他方の測定部6,8における流速値及び径値と、に基づいて係数値を導き出し、前記導管内を流動する流体の圧力を求める。【選択図】図3
