CPC A61B 8/4281 (2013.01) [A61B 8/12 (2013.01); A61B 8/445 (2013.01); B06B 1/0292 (2013.01); G01N 29/02 (2013.01); G01N 29/2406 (2013.01); G01N 29/28 (2013.01); B06B 1/0207 (2013.01); B06B 2201/76 (2013.01)] | 24 Claims |
1. An ultrasound transducer comprising:
a plurality of capacitive ultrasound transducer elements; and
a base having a largest dimension sized and shaped to be disposed with an external ear canal, wherein the plurality of capacitive ultrasound transducer elements is mounted on the base;
wherein the plurality of capacitive ultrasound transducer elements is configured to form an ultrasound waveform having an angular beam spread through a gaseous medium of greater than 15 degrees and an attenuation loss through the gaseous medium of greater than 10 dB measured at a distance from 12.5 mm to 25 mm along a primary transmission axis.
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