US 11,927,490 B2
Sticking-type deep body thermometer
Yoshiki Niki, Nagaokakyo (JP); and Toru Shimuta, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Nov. 5, 2020, as Appl. No. 17/090,273.
Application 17/090,273 is a continuation of application No. PCT/JP2019/019848, filed on May 20, 2019.
Claims priority of application No. 2018-097443 (JP), filed on May 21, 2018.
Prior Publication US 2021/0055168 A1, Feb. 25, 2021
Int. Cl. G01K 13/20 (2021.01); A61B 5/01 (2006.01); G01K 7/16 (2006.01); G01K 7/42 (2006.01)
CPC G01K 13/20 (2021.01) [A61B 5/01 (2013.01); G01K 7/16 (2013.01); G01K 7/427 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A sticking-type deep body thermometer comprising:
a thermometer body;
a sticking member having an adhesive property on a bottom surface of thermometer body;
a first thermal resistor having a predetermined thermal resistance and disposed substantially parallel to the sticking member;
a first temperature sensor configured to detect a first temperature at a first surface of the first thermal resistor adjacent to the sticking member;
a second temperature sensor configured to detect a second temperature at a second surface of the first thermal resistor opposite the first surface;
a deep body temperature detection circuit configured to estimate a deep body temperature based on the first temperature and the second temperature; and
an attachment/detachment sensor configured to detect attachment and detachment of the sticking-type deep body thermometer, wherein the attachment/detachment sensor determines that attachment or detachment of the sticking-type deep body thermometer has occurred when, within a predetermined time, a sign of a temperature difference between the first temperature and the second temperature is inverted and an absolute value of the temperature difference becomes greater than or equal to a first threshold value.