| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic blood pressure measuring apparatus which gives accurate blood pressure measurement values by reducing the effect of width dimension of a tourniquet.SOLUTION: A maximum blood pressure value SBP of a living body is determined on the basis of a compression pressure value PC applied on the upper arm (a part to be compressed) of the living body when deciding a rise in the pulse wave generated at a middle expandable bag 24 or a downstream expandable bag 26 of a tourniquet 12. Because the upper arm is compressed by an upstream expandable bag, the middle expandable bag and the downstream expandable bag of the tourniquet 12 which are made of independent air chambers arranged adjacent to each other, compression pressure difference is small between a middle part and edges of the tourniquet 12. In addition, because the upstream expandable bag 22, the middle expandable bag 24 and the downstream expandable bag 26 made of independent air chambers are flexible in the width direction of the tourniquet 12, the effect of the compression condition of the tourniquet 12 on the blood flow and transmission condition of the pulse wave is reduced and the effect of the width of the tourniquet 12 can be suppressed to give an accurate maximum blood pressure SBP. |
