US 11,883,139 B2
Sensor module and blood pressure measurement device
Yuki Nakagawa, Kyoto (JP); Tsuyoshi Kitagawa, Kyoto (JP); Jumpei Mano, Kyoto (JP); and Takanobu Yamauchi, Kyoto (JP)
Assigned to OMRON HEALTHCARE CO., LTD., Kyoto (JP)
Filed by OMRON HEALTHCARE Co., Ltd., Kyoto (JP)
Filed on Nov. 16, 2020, as Appl. No. 17/098,860.
Application 17/098,860 is a continuation of application No. PCT/JP2019/020046, filed on May 21, 2019.
Claims priority of application No. 2018-099726 (JP), filed on May 24, 2018.
Prior Publication US 2021/0059537 A1, Mar. 4, 2021
Int. Cl. A61B 5/022 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/022 (2013.01) [A61B 5/6824 (2013.01); A61B 2562/0247 (2013.01); A61B 2562/04 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A sensor module, comprising:
a sensor base;
a pressure sensor portion fixed to the sensor base;
a sensor head cover fixed to the sensor base, the sensor head cover
including a rubber portion that forms, on an outer surface, at least a region that comes into contact with a living body and that allows pressure from the living body to transfer to a side of the pressure sensor portion,
including a protrusion portion projecting toward the living body, an end surface thereof being formed with a flat surface, and at least a portion of the protrusion portion being formed from the rubber portion, and
forming a gap portion between an inner surface, at least a portion of the inner surface being composed of the rubber portion, and the sensor base and the pressure sensor portion; and
a soft portion disposed in the gap portion at least between the rubber portion and the pressure sensor portion, the soft portion
having a lower hardness than the rubber portion and
allowing pressure from the rubber portion to transfer to the pressure sensor portion, wherein
the sensor head cover includes:
an opening portion formed in a region, opposite the pressure sensor portion, of the sensor base;
a first portion located in the opening portion and formed from an identical material to the rubber portion; and
a second portion located on an outer side of the first portion in the opening portion and formed from an identical material to the soft portion, the second portion closing off space between an edge of the opening portion and the first portion.