Abstract: Apparatus and a calibration method for measurement of blood pressure are used to determine personal PIP's for a given subject and to store the personal PIP's for future personal use in blood pressure measurement in the subject. The apparatus comprises at least one button communicating with a MPU unit for entering information used to determine the personal PIP's of the subject. The method comprises the steps of obtaining information required to determining the PIP's of a subject, determining the personal PIP's of the subject, and storing the personal PIP's of the subject for future personal use for the subject.

Abstract: A sphygmomanometer having an elongated tube, an air chamber coupled to a first end of the tube, and a liquid chamber coupled to a second end of the tube. The liquid chamber is partially filled with fluid and is couplable to a source of external pressure. An offset region located proximate the second end of the tube has a significantly reduced cross-sectional area so as to reduce the effect of fluid level changes on pressure measurement accuracy. At least one ventilation valve is coupled to the elongated tube and the air chamber and is operative to vent the elongated tube and the air chamber to atmosphere.