Patent ID: 9572501
Date: 2017-02-21
CPC Classifications: A61B

Claim:
1. A blood pressure information measurement device comprising: a cuff that takes an annular form in a fitted state of being fitted on a fitting site; a first fluid bag that is provided in the cuff and is configured to be wrapped around a proximal side of the fitting site in the fitted state; a second fluid bag that is provided in the cuff and is configured to be wrapped around a portion including a distal side of the fitting site in the fitted state; a cushion material disposed between the first fluid bag and the second fluid bag; an inflation and deflation mechanism that is capable of inflating and deflating the first fluid bag and the second fluid bag; a main body that is separate from the cuff, and in which the inflation and deflation mechanism is provided; a piping that connects the first fluid bag and the second fluid bag to the inflation and deflation mechanism, the piping comprising a first piping portion and a second piping portion, wherein the second piping portion is provided in the cuff and connects the first fluid ban and the second fluid bag through an opening/closing valve, and the first piping portion connects the second piping portion to the inflation and deflation mechanism; the opening/closing valve that is provided in the piping, and that is set to an open state to allow communication of the first fluid bag with at least one of the second fluid bag and the inflation and deflation mechanism, and that is set to a closed state to maintain an internal pressure of the first fluid bag as it is by isolating the first fluid bag from the second fluid bag and the inflation and deflation mechanism; a first pressure detection unit that is provided on the second piping portion and detects the internal pressure of the first fluid bag; a pulse wave acquisition unit that acquires a pulse wave based on the pressure detected by the first pressure detection unit; and an index calculation unit that calculates an index indicating a degree of arteriosclerosis based on the pulse wave acquired by the pulse wave acquisition unit, wherein the opening/closing valve is provided in the cuff, wherein only one piping portion, which is the first piping portion, is provided between the cuff and the main body, wherein the first pressure detection unit is provided in the cuff, and wherein the cuff and the main body directly contact one another and are rotatably coupled.