US 11,918,327 B2
Sphygmomanometer, blood pressure measurement method, and device
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. 13, 2019, as Appl. No. 16/439,761.
Application 16/439,761 is a continuation of application No. PCT/JP2017/042084, filed on Nov. 22, 2017.
Claims priority of application No. 2016-255838 (JP), filed on Dec. 28, 2016.
Prior Publication US 2019/0290143 A1, Sep. 26, 2019
Int. Cl. A61B 5/022 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/02241 (2013.01) [A61B 5/022 (2013.01); A61B 5/681 (2013.01); A61B 2562/0247 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A sphygmomanometer comprising:
a main body that is mounted with a pump and is configured to be disposed on a dorsal surface of a wrist as a measurement target site;
a belt that respectively extends from an ulnar side end portion and a radial side end portion of the main body and is configured to be attached around the wrist;
a cuff structure that has a band shape and a set length extending from a first end to a second end on a side opposite to the first end, the first end of the cuff structure being attached to the ulnar side end portion of the main body such that the cuff structure is configured to extend along a circumferential direction of the wrist from the ulnar side end portion of the main body to a palmar surface of the wrist, wherein
in a state that the sphygmomanometer has been assembled, the cuff structure is disposed facing an inner circumferential surface of the belt and is affixed only to the main body and only at the first end in a separable manner from the inner circumferential surface of the belt;
in a state that the sphygmomanometer has been assembled and before being attached to the wrist as the measurement target site, the cuff structure is entirely separated from and external to the inner circumferential surface of the belt and is movable independently relative to the belt; and
a programmed processor configured to:
perform control of supplying a fluid from the pump to the cuff structure to press the wrist, and
calculate a blood pressure based on a pressure of the fluid contained in the cuff structure, wherein:
in an attached state when the belt and the cuff structure together with the main body are configured to be attached to the wrist, the belt respectively extending from the ulnar side end portion and the radial side end portion of the main body is configured to surround and restrain, in the circumferential direction, an outer circumferential side of the cuff structure extending along the circumferential direction of the wrist collectively with the wrist, such that the cuff structure is configured to be pressed to the wrist,
a length of the belt along the circumferential direction is configured to be set variably depending on wrists having different circumferential lengths from each other, such that, when the length of the belt varies, a range along the inner circumferential surface of the belt occupied by the cuff structure having the set length varies relative to the length of the belt, and
when the cuff structure is configured to be attached to a wrist having a preset maximum wrist circumference in the circumferential direction of the wrist having the maximum wrist circumference, the second end of the cuff structure terminates within a range between a first angle of a radial artery viewed from a center of the wrist having the maximum wrist circumference and a second angle of a boundary line on a radial side between the dorsal surface and the palmar surface of the wrist having the maximum wrist circumference.