Back to results
US 11,998,678 B2Granted
End-of-dose detection in nebulizers
AssigneeStamford Devices Limited
InventorsJoseph Grehan, Michael Casey, Shaun Porter, Niall Smith
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeStamford Devices Limited
InventorsJoseph Grehan, Michael Casey, Shaun Porter, Niall Smith
Estimating the term…
A digital processor of a nebulizer controller controls and monitors drive current (I) applied to an aperture plate. The drive current is detected as a series of discrete values at each of multiple measuring points, each having a particular drive frequency The processor in real time calculates a slope or rate of change of drive current with frequency and additionally determines a minimum value for drive current leading up to the peak value. The processor uses both the value of the minimum drive current during the scan and also the maximum slope value to achieve reliable prediction of end of dose, when the aperture plate becomes dry.
A nebulizer, comprising:
A method of operation of a controller of a nebulizer comprising a vibrating aperture plate, an actuator, and an aperture plate drive circuit, the method comprising:
A non-transitory computer readable medium comprising software code to perform a method of operation of a controller of a nebulizer comprising a vibrating aperture plate, an actuator, and an aperture plate drive circuit, when executing on a digital processor, the method comprising:
Dependencies are inferred from the claim text.