CPC A61B 7/026 (2013.01) [A61B 5/6805 (2013.01); A61B 7/003 (2013.01); A61B 7/04 (2013.01); B06B 1/0688 (2013.01); B06B 1/085 (2013.01); G01H 11/08 (2013.01); H04R 17/02 (2013.01); A61B 2562/0204 (2013.01); A61B 2562/221 (2013.01); A61B 2562/225 (2013.01); B06B 2201/76 (2013.01)] | 14 Claims |
1. A sound-or-vibration sensor, comprising:
a. a first housing, wherein a first end of said first housing incorporates an open-ended cavity bounded by a base portion and a sidewall, said sidewall is located between said base portion and an opening of said open-ended cavity, a periphery of said opening of an open end of said open-ended cavity abuts an outer rim of said first housing, and said sidewall incorporates a counterbore defining a base rim within said open-ended cavity, wherein said base rim is recessed from said outer rim, and said base rim is proximate to said open end of said open-ended cavity;
b. a metallic diaphragm disk operatively coupled to said base rim of said first housing, thereby providing for closing said open-ended cavity of said first housing;
c. a piezoelectric material bonded to said metallic diaphragm disk on a cavity-facing side thereof;
d. at least one inertial mass either incorporated in, or attached to, said first housing; and
e. a plastic film adhesively bonded to at least one of said outer rim of said first housing or an outer-facing surface of said metallic diaphragm disk, wherein a cavity-facing surface of said plastic film is at least proximally adjacent to said outer-facing surface of said metallic diaphragm disk, and an outer-facing surface of said plastic film provides for receiving an adhesive acoustic interface material to provide for coupling the sound-or-vibration sensor to a skin surface of a test subject.
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