1. Device (1) blood pressure measurement parameters to measure blood pressure parameters by determining arterial volume comprising: a cuff (20) wrapped around a predetermined measurement site； ! unit (50) for adjusting for adjusting the pressure in the cuff and by creating a pressure relief； ! a sensor (32) for determining the pressure of the cuff pressure which is the pressure in the cuff； ! a sensor (70) volume disposed in a predetermined position, and the cuff for detecting the artery volume signal indicative of the volume of the artery； and! a block (100) for controlling when measuring blood pressure by means of the servo parameters adjustment unit to maintain a constant volume of the artery, and! the control unit includes a unit (104) determining process for determining the control target value in the servo control on the basis of the arterial volume signal, wherein the processing determination unit includes: a block (112) adjustable to control the instantaneous change in the cuff pressure in a particular pressure section by controlling adjusting unit； and! a block (114), decision for determining the inflection point of the artery volume signal obtained in the control period adjustment control unit, and for deciding a control target value using the determined inflection point. ! 2. The blood pressure measurement device according to claim 1, wherein the control unit changes the control cuff pressure during one heartbeat in the measuring person. ! 3. The blood pressure measurement device according to claim 1, wherein1. Устройство (1) измерения параметров кровяного давления для измерения параметров кровяного давления путем определения объема артерии, включающее: ! манжету (20), оборачиваемую вокруг заданного участка измерения； ! блок (50) регулировки для регулировки давления в манжете путем создания и сброса давления； ! датчик (32) давления для определения давления манжеты, которое представляет собой давление в манжете； ! датчик (70) объема, расположенный в за
