What is the name of instrument used to compress artery and record pressures determining blood pressure?

The instrument used to compress an artery and record pressures to determine blood pressure is called a sphygmomanometer. It consists of an inflatable cuff wrapped around the upper arm, connected to a pressure gauge and a stethoscope. The cuff is inflated until the pressure exceeds the arterial pressure, then slowly released while listening through the stethoscope for the Korotkoff sounds. These sounds are created by blood rushing through the partially-compressed artery, and their appearance and disappearance are used to determine systolic and diastolic blood pressure.