US 12,402,854 B2
Medical device and program
Shinpei Ogawa, Kumamoto (JP)
Assigned to AMI Inc., Kumamoto (JP)
Appl. No. 17/637,820
Filed by AMI INC., Kumamoto (JP)
PCT Filed Sep. 18, 2020, PCT No. PCT/JP2020/035489
§ 371(c)(1), (2) Date Feb. 24, 2022,
PCT Pub. No. WO2021/054446, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 2019-172335 (JP), filed on Sep. 20, 2019.
Prior Publication US 2022/0280132 A1, Sep. 8, 2022
Int. Cl. A61B 7/04 (2006.01); A61B 5/02 (2006.01)
CPC A61B 7/04 (2013.01) [A61B 5/02 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A medical device comprising:
a vibrating receiver configured to collect heart sounds in a frequency band at least from 0 to 20 Hz, wherein the vibration receiver comprises
a vibrating plate made of silicone rubber having a hardness of 30 to 80 durometer,
a piezoelectric sensor configured to directly sense vibration of the vibrating plate and convert the sensed vibration into electrical signals, and
an amplifier configured to amplify the electrical signals; and
a computer, wherein the computer is configured to:
identify a frequency with peak power in the frequency band; and
diagnose cardiac function based on the changes over time of the frequency with peak power.