一种踝血压量测设备（10），用以测量活体之踝部（12）的血压，包含气胀环带（20），适用被穿戴在活体之踝部上，环带压力改变设备（24，26，28，30，70），自高于踝部之收缩血压的压力，降低在环带中的压力，远程脉波侦测设备（56），适用被穿戴在位于踝部之远程侧上之活体的远程部位上，且侦测自远程部位所产生之远程脉波；增加点侦测机构（72，74，76），用以侦测，当环带压力被环带压力改变设备降低时，被远程脉波侦测设备持续地侦测之远程脉波的量值被显着地增加的至少一增加点；和踝血压决定机构（24，30，32，78），决定当增加点侦测机构侦测到第二增加点时的一环带压力，系为具有动脉狭窄之活体踝部的多数之胫动脉之一的收缩血压。

An ankle-blood-pressure measuring apparatus (10) for measuring a blood pressure of an ankle (12) of a living subject, comprising an inflatable cuff (20) which is adapted to be worn on the ankle of the subject; a cuff-pressure changing device (24, 26, 28, 30, 70) which decreases a pressure in the cuff from a pressure higher than a systolic blood pressure of the ankle; a distal-pulse-wave detecting device (56) which is adapted to be worn on a distal portion of the subject that is located on a distal side of the ankle and detects a distal pulse wave produced from the distal portion; an increasing-point detecting means (72, 74, 76) for detecting at least one increasing point where a magnitude of the distal pulse wave continuously detected by the distal-pulse-wave detecting device when the pressure of the cuff is decreased by the cuff-pressure changing device, significantly increases; and an ankle-blood-pressure determining device (24, 30, 32, 78) which determines a pressure of the cuff when the increasing-point detecting means detects the second increasing point, as a systolic blood pressure of one of a plurality of tibial arteries of the ankle of the subject that has stenosis.