Disclosed is a finger cuff attachable to a patient's finger to be used in measuring the patient's blood pressure by a blood pressure measurement system utilizing the volume clamp method. The finger cuff may include a light emitting diode (LED) and photodiode to form an LED-PD pair to perform measurements of a plethysmogram signal to aid in measuring the patient's blood pressure； and a bladder. The bladder includes a bottom portion that abuts only the bottom portion of the patient's finger to apply concentrated pressure only on the bottom of the patient's finger near both of the patient's two arteries, wherein, when the finger cuff is placed around the patient's finger, the bottom portion bladder and LED-PD pair aid in measuring the patient's blood pressure by the blood pressure measurement system.
