US 12,453,526 B2
Wheeze detection apparatus, wheeze detection method, and wheeze detection program
Naoto Ohgami, Kyoto (JP); Kei Asai, Kyoto (JP); Kenji Hashino, Kyoto (JP); Naoki Matsumoto, Kyoto (JP); Chizu Habukawa, Wakayama (JP); and Katsumi Murakami, Osaka (JP)
Assigned to OMRON HEALTHCARE CO., LTD., Kyoto (JP)
Filed by OMRON HEALTHCARE CO., LTD., Muko (JP)
Filed on Mar. 11, 2021, as Appl. No. 17/198,457.
Application 17/198,457 is a continuation of application No. PCT/JP2019/032893, filed on Aug. 22, 2019.
Claims priority of application No. 2018-170805 (JP), filed on Sep. 12, 2018.
Prior Publication US 2021/0196226 A1, Jul. 1, 2021
Int. Cl. A61B 7/00 (2006.01); A61B 5/00 (2006.01); A61B 7/04 (2006.01)
CPC A61B 7/003 (2013.01) [A61B 5/7203 (2013.01); A61B 7/04 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A wheeze detection apparatus comprising:
a housing;
a display;
a microphone to measure a pulmonary sound of a measurement subject; and
a processor configured or programmed to define and function as:
a respiratory sound volume deriver to derive a respiratory sound volume of the measurement subject based on the pulmonary sound measured by the microphone; and
a wheeze detector to extract a maximum point from an intensity distribution for each frequency of the pulmonary sound and to detect wheeze based on information on the maximum point, wherein
the microphone is provided in an internal accommodation space of the housing, the internal accommodation space including an opening configured to be closed by the opening being pressed against a body surface of the measurement subject;
when the opening is pressed against the body surface of the measurement subject, the internal accommodation space is in a sealed state to prevent outside sound from being received by the microphone;
the wheeze detector determines whether the respiratory sound volume is equal to or greater than a first predetermined value and equal to or smaller than a second predetermined value that is greater than the first predetermined value;
when the wheeze detector determines that the respiratory sound volume is larger than the second predetermined value or smaller than the first predetermined value, the wheeze detector sets a detection sensitivity of the wheeze to a higher value than the detection sensitivity is set when the respiratory sound volume is equal to or greater than the first predetermined value and equal to or smaller than the second predetermined value; and
the display notifies a result of detection by the wheeze detector, the result showing whether or not the wheeze is present.