Patent ID: 9232899
Filing Date: 2016-01-12
CPC Classification: A61B

Claim Text:
1. A blood pressure information measurement device for measuring blood pressure information of a subject, comprising: a first fluid bladder; a second fluid bladder; a two-port connection valve inserted in a tube between the first fluid bladder and the second fluid bladder, wherein the two-port connection valve switches between a coupled state in which the first fluid bladder and the second fluid bladder are coupled to each other so that communication of a fluid inside the first and second fluid bladders is allowed and an uncoupled state in which the coupled state of the first and second fluid bladders is released so that communication of the fluid is not allowed; an adjustment unit comprising an air pump and a valve that adjusts internal pressures of the first fluid bladder and the second fluid bladder; a first pressure sensor that measures the internal pressure of the first fluid bladder; a second pressure sensor that measures the internal pressure of the second fluid bladder; and a computation unit that is programmed to calculate blood pressure information based on a change in the internal pressure of each of the first fluid bladder and the second fluid bladder attached to a measurement site, the computation unit being programmed to execute: a computation that calculates an index that determines arteriosclerosis as the blood pressure information, based on a change in the internal pressure of the first fluid bladder when the two-port connection valve is switched to the uncoupled state so that the first fluid bladder and the second fluid bladder are decoupled after it is determined that the distal side of the measurement site is in the avascularized state and the adjustment unit maintains the internal pressure of the second fluid bladder at an internal pressure at which it is determined that the distal side of the measurement site is in the avascularized state, with the first fluid bladder attached to the proximal side of the measurement site and the second fluid bladder attached to the distal side of the measurement site.