US 12,350,022 B2
Sensor module for measuring blood pressure, and wrist-wearable portable blood pressure measurement device using same
Dong Hwa Lee, Yongin-si (KR)
Assigned to CHARMCARE CO., LTD., Seoul (KR)
Appl. No. 17/605,882
Filed by CHARMCARE CO., LTD., Seoul (KR)
PCT Filed Apr. 22, 2020, PCT No. PCT/KR2020/005308
§ 371(c)(1), (2) Date Oct. 22, 2021,
PCT Pub. No. WO2020/218819, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 10-2019-0048750 (KR), filed on Apr. 25, 2019.
Prior Publication US 2022/0218207 A1, Jul. 14, 2022
Int. Cl. A61B 5/021 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/021 (2013.01) [A61B 5/0004 (2013.01); A61B 5/6824 (2013.01); A61B 5/6831 (2013.01); A61B 5/742 (2013.01); A61B 2562/0247 (2013.01); A61B 2562/0261 (2013.01); A61B 2562/043 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A sensor module for blood pressure measurement, comprising:
a substrate unit;
a first pressure sensor unit disposed on a reference plane of the substrate unit and configured to measure a first pressure;
a second pressure sensor unit disposed adjacent to the first pressure sensor unit on the reference plane and configured to measure a second pressure, wherein the first pressure sensor unit and the second pressure sensor unit protrude by different distances from the reference plane and form a step of a first distance between an upper portion of the first pressure sensor unit and an upper portion of the second pressure sensor unit; and
a control unit configured to operate the first pressure sensor unit and the second pressure sensor unit; estimate a second distance from the upper portion of the first pressure sensor unit and a target blood vessel by using the first pressure, the second pressure and the first distance;
and calculate a blood pressure value in the target blood vessel based on the second distance, the first pressure and the second pressure.