CPC A61M 16/0006 (2014.02) [A61M 15/0018 (2014.02); A61M 15/0098 (2014.02); A61M 16/0866 (2014.02); A61M 15/0008 (2014.02); A61M 16/161 (2014.02); A61M 16/208 (2013.01); A61M 2205/0205 (2013.01); A61M 2205/33 (2013.01); A61M 2205/502 (2013.01); A61M 2205/581 (2013.01); A61M 2205/582 (2013.01); A61M 2205/59 (2013.01); A61M 2206/20 (2013.01)] | 19 Claims |
1. A device, comprising:
a housing including an annular track including an opening in an inner wall of the annular track, an inlet configured to permit air into the annular track, an outlet configured to permit air out of the annular track, and a mouthpiece in fluid communication with the inlet; and
a body configured to revolve within and around the annular track in response to flow of air from the track inlet to the track outlet, wherein revolutions of the body around the annular track causes intermittent partial blocking of the outlet, and cyclical fluctuations of airflow resistance, wherein
the opening in the inner wall fluidly connects the annular track with a sensor for sensing a flow of fluid through the annular track.
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