CPC A61M 11/00 (2013.01) [A61M 11/005 (2013.01); B05B 15/14 (2018.02); B05B 17/0646 (2013.01); B05B 17/0669 (2013.01); B06B 1/0253 (2013.01); A61M 2205/3317 (2013.01); A61M 2205/3386 (2013.01); A61M 2205/50 (2013.01); A61M 2205/583 (2013.01); B05B 12/081 (2013.01); B06B 2201/77 (2013.01)] | 14 Claims |
1. A nebulizer, comprising:
a vibrating aperture plate;
an actuator; and
an aperture plate drive circuit having a controller, wherein the controller is configured to:
measure drive current to the aperture plate;
detect end-of-dose based on a minimum value of the drive current and a maximum rate of change of the drive current; and
upon detection of end-of-dose, automatically stop operation of the actuator, and
wherein the controller is further configured to detect the end-of-dose based on a ratio of the maximum rate of change and the minimum value of the drive current.
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