US 12,133,719 B2
Blood pressure measurement device
Takashi Ono, Kyoto (JP); Takeshi Kubo, Kyoto (JP); Yasuo Asano, Kyoto (JP); Ko Nakaoka, Kyoto (JP); Yoshihiko Sano, Kyoto (JP); and Takanori Nishioka, Kyoto (JP)
Assigned to OMRON CORPORATION, Kyoto (JP); and OMRON HEALTHCARE CO., LTD., Kyoto (JP)
Filed by OMRON Corporation, Kyoto (JP); and OMRON HEALTHCARE Co., Ltd., Kyoto (JP)
Filed on Jun. 25, 2021, as Appl. No. 17/304,799.
Application 17/304,799 is a continuation of application No. PCT/JP2019/048035, filed on Dec. 9, 2019.
Claims priority of application No. 2018-246159 (JP), filed on Dec. 27, 2018.
Prior Publication US 2021/0315466 A1, Oct. 14, 2021
Int. Cl. A61B 5/0235 (2006.01); A61B 5/00 (2006.01); A61B 5/022 (2006.01)
CPC A61B 5/0235 (2013.01) [A61B 5/02233 (2013.01); A61B 2562/0247 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A blood pressure measurement device attachable to a living body, the blood pressure measurement device comprising:
a cuff structure including a sensing cuff, a tensile cuff, and a pressing cuff that are configured to be inflated by a fluid;
a pump including a pump body and a pump valve;
a first flow path including a first on-off valve and fluidly connecting the pump and the sensing cuff through the first on-off valve;
a second flow path configured by branching from the first flow path between the pump and the first on-off valve, including a second on-off valve, a third on-off valve, and a fourth on-off valve, and connecting the pump and atmosphere through the second on-off valve, the third on-off valve, and the fourth on-off valve sequentially in that order;
a third flow path configured by branching from the second flow path at an intermediate portion between the second on-off valve and the third on-off valve and fluidly connecting the pump and the tensile cuff; and
a fourth flow path configured by branching from the second flow path at an intermediate portion between the third on-off valve and the fourth on-off valve and fluidly connecting the pump and the pressing cuff;
a pressure sensor provided on the first flow path at an intermediate portion between the first on-off valve and the sensing cuff;
a storage unit configured to store a threshold for pressure for determining failure of the pump valve, the first on-off valve, the second on-off valve, the third on-off valve, and the fourth on-off valve; and
a control unit configured to determine failure of one of the pump valve, the first on-off valve, the second on-off valve, the third on-off valve, or the fourth on-off valve on the basis of a signal from the pressure sensor and the threshold, and open the other valves.