US 11,832,922 B2
Sphygmomanometer, and method and device for measuring blood pressure
Shohei Iwata, Kyoto (JP); Takanori Nishioka, Kyoto (JP); Akira Tampo, Kyoto (JP); Yoshihiko Sano, Kyoto (JP); Takeshi Kubo, Kyoto (JP); and Yu Higashimura, Kyoto (JP)
Assigned to OMRON CORPORATION, Kyoto (JP); and OMRON HEALTHCARE CO., LTD., Muko (JP)
Filed by OMRON CORPORATION, Kyoto (JP); and OMRON HEALTHCARE CO., LTD., Muko (JP)
Filed on Jun. 17, 2019, as Appl. No. 16/442,659.
Application 16/442,659 is a continuation of application No. PCT/JP2017/042370, filed on Nov. 27, 2017.
Claims priority of application No. 2016-256030 (JP), filed on Dec. 28, 2016.
Prior Publication US 2019/0298181 A1, Oct. 3, 2019
Int. Cl. A61B 5/0235 (2006.01); A61B 5/02 (2006.01); A61B 5/022 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/0235 (2013.01) [A61B 5/02 (2013.01); A61B 5/022 (2013.01); A61B 5/02233 (2013.01); A61B 5/681 (2013.01); A61B 5/6831 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A watch-type wearable device with a sphygmomanometer comprising:
a bag-shaped sensing cuff configured to be worn to wrap a measurement site at a wrist along a longitudinal direction of the sensing cuff, the sensing cuff comprising a single inflated/deflated space surrounded by a first surface and a second surface, the second surface configured to contact with the measurement site;
a back plate disposed on the sensing cuff along the first surface opposite to the second surface;
a pressing member configured to press the back plate toward the measurement site; and
a blood-pressure calculating part configured to calculate a blood pressure based on a pressure of a fluid stored in the sensing cuff,
wherein:
a first surface of the back plate facing the first surface of the sensing cuff is continuously curved along a width direction of the back plate that is perpendicular to the longitudinal direction of the sensing cuff, the first surface of the back plate being continuously curved between first and second tip ends of the back plate such that the back plate protrudes convexly toward the sensing cuff,
a second surface of the back plate facing the pressing member is entirely flat between the first and second tip ends of the back plate,
first and second edge portions of the back plate adjacent the first and second tip ends, respectively, have a gradually reducing dimension, that is defined along a direction perpendicular to the longitudinal and width directions, as the first and second edge portions approach the first and second tip ends, and
a dimension of the back plate in the width direction is larger than a dimension of the sensing cuff in the width direction to the extent that pressures applied across the measurement site are substantially identical.