Inhalation device with acoustic control

• US 6,152,130 A
• Filed: 06/12/1998
• Issued: 11/28/2000
• Est. Priority Date: 06/12/1998
• Status: Expired due to Term

• Current Assignee: MicroDose Therapeutx, Inc. (Teva Pharmaceutical Industries Limited)
• Original Assignee: Microdose Technologies Inc. (Teva Pharmaceutical Industries, Ltd.)
• Inventors: Fleming, Scott, Gumaste, Anand V., Abrams, Andrew L.
• Primary Examiner(s): Lewis, Aaron J.
• Assistant Examiner(s): MITCHELL, TEENA KAY
• Application Number:
  US09/097,106
• Time in Patent Office: 900 Days
• Field of Search: 128/204.21, 128/204.23, 128/204.26, 128/204.29, 128/203.24, 128/203.25, 128/200.16, 128/203.12, 128/204.28
• US Class Current: 128/204.21
• CPC Class Codes: A61M 15/0085 using ultrasonics spraying or atomising liquids using ultrasonic vibrations in general B05B17/06
• CPC Class Codes: A61M 15/02 with activated or ionised fluids, e.g. electrohydrodynamic [EHD] or electrostatic devices; Ozone-inhalators with radioactive tagged particles
• CPC Class Codes: A61M 2016/0021 with a proportional output signal, e.g. from a thermistor
• CPC Class Codes: A61M 2202/064 Powder
• CPC Class Codes: A61M 2205/3375 Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2205/50 with microprocessors or computers

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 and/or amplitude of the fluid. These signals control and activate an electrostatic plate and/or a high frequency vibrator.

Claims

1. An air inhalation device for delivering powdered medicament from a container, said container comprising:

an acoustic controller, said acoustic controller including an acoustic microphone element configured to sense sound of air flow around said acoustic microphone element and to produce signals representative of said air flow, and a high frequency vibrator configured for vibrating said container in response to said signals, said vibrator thereby being operable for inducing said medicament into said air flow.

2. An inhalation device as claimed in claim 1, wherein said signals control activation/deactivation of an electrostatic plate to attract certain particles towards said electrostatic plate and into said air flow.

3. An inhalation device as claimed in claim 1, wherein said signals control activation of a timer, said timer being configured to control said vibrator.

4. An inhalation device as claimed in claim 1, wherein said device further comprises an inspiratory capacity processor configured to obtain data related to air flow rate around said acoustic microphone element and to control said vibrator using said data.

5. An inhalation device as claimed in claim 4, wherein said data includes a minimum and maximum air flow rate indicative of inspiratory and expiratory effort of a user of said inhalation device.

6. An inhalation device as claimed in claim 1, wherein said acoustic microphone element is optimally positioned within said inhalation device to obtain optimal air flow around said acoustic microphone element.

7. An inhalation device as claimed in claim 1, wherein said acoustic microphone element comprises an air pressure transducer.

8. An inhalation device comprising:

an air flow passage;

an acoustic controller including an acoustic microphone element positioned within said an air flow passage and being configured to sense sound of air flow around said acoustic microphone element and for producing signals representative of a frequency and amplitude of said air flow;

a high frequency vibrator configured to vibrate a container of powdered medicament and induce said medicament into said air flow, said high frequency vibrator being controlled by said signals; and

an electrostatic plate configured to attract certain particles of said powdered medicament towards said electrostatic plate and into said air flow, said electrostatic plate being controlled by said signals.

9. An inhalation device for delivering powdered medicament from a container, said device comprising:

an acoustic controller including an acoustic microphone element configured to sense sound of air flow around said acoustic microphone element and to produce signals representative of said air flow;

and an electrostatic plate configured for attracting certain particles of said medicament from said container and into said air flow in response to said signals.

10. An inhalation device as claimed in claim 9, wherein said signals control activation of a timer, said timer being configured to control said electrostatic plate.

11. An inhalation device as claimed in claim 9, wherein said device further comprises an inspiratory capacity processor configured to obtain data related to air flow rate around said acoustic microphone element and to control said electrostatic plate using said data.

12. An inhalation device as claimed in claim 9, wherein said data includes a minimum and maximum air flow rate indicative of inspiratory and expiratory effort of a user of said inhalation device.

13. An inhalation device as claimed in claim 9, wherein said acoustic microphone element is optimally positioned within said inhalation device to obtain optimal air flow around said acoustic microphone element.

14. An inhalation device as claimed in claim 9, wherein said acoustic microphone element comprises an air pressure transducer.