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US 8,474,452 B2Granted
Directional flow sensor inhaler
AssigneeMicrodose Therapeutx, Inc.
InventorsAnand V. Gumaste, John Bowers
Life of this patent
Estimating the term…
Abstract
An fluid sensor to activate and control various components of an inhalation device. The fluid sensor includes an acoustic element, such as a microphone, positioned within said inhalation device to detect fluid within the device and output signals representative of the frequency, direction and/or amplitude of the fluid. These signals control and activate an electrostatic plate and/or a high frequency vibrator.
Claims9
An air inhalation device for delivering medicament from a container to a user, said device comprising:
- an acoustic controller, said acoustic controller including an acoustic sensing element configured to detect noise from free air flow into and through the device and to generate signals based on said detected noise, and a circuit for processing said signals to identify a direction and amplitude of said airflow;
- and
- a high frequency vibrator separate from said acoustic sensing element and coupled to said container for inducing said medicament from said container into said air flow when said processed signals identify inhalation by said user, wherein a direction of said airflow is identified by said circuit by measuring an instantaneous voltage offset generated by said acoustic sensing element.
Dependencies are inferred from the claim text.