Inhalation device
First Claim
1. In a dry powder inhaler comprising a first chamber, a vibrator operatively connected to said first chamber in which a dry powder is deaggregated by said vibrator and separated by size, and a second chamber in which the size-separated deaggregated powder is picked up by an air stream generated during inhalation by a patient through an opening in said inhaler and is carried for introduction into the patient, the improvement which comprises electronic circuitry with feedback control for controlling dosing.
3 Assignments
0 Petitions
Accused Products
Abstract
A dry powder inhaler comprises a first chamber in which a dry powder may be deaggregated by a vibrator and separated by size, and a second chamber in which the size-separated deaggregated powder may be picked up by an air stream and carried for introduction into a patient. Electronic circuitry is included for controlling dosing.
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Citations
54 Claims
- 1. In a dry powder inhaler comprising a first chamber, a vibrator operatively connected to said first chamber in which a dry powder is deaggregated by said vibrator and separated by size, and a second chamber in which the size-separated deaggregated powder is picked up by an air stream generated during inhalation by a patient through an opening in said inhaler and is carried for introduction into the patient, the improvement which comprises electronic circuitry with feedback control for controlling dosing.
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20. In a dry powder inhaler comprising a first chamber, a vibrator operatively connected to said first chamber in which a dry powder is deaggregated by said vibrator and separated by size, and a second chamber in which the size-separated deaggregated powder is picked up by an air stream generated during inhalation by a patient through an opening in said inhaler and is carried for introduction into the patient, the improvement wherein said first chamber contains two or more vibrators designed to vibrate at different frequencies.
- 21. In a dry powder inhaler comprising a first chamber, a vibrator operatively connected to said first chamber in which a dry powder is deaggregated by said vibrator and separated by size, and a second chamber in which the size-separated deaggregated powder is picked up by an air stream generated during inhalation by a patient through an opening in said inhaler and is carried for introduction into the patient, the improvement which comprises electronic circuitry for controlling dosing, and an environmental sensor associated with said electronic circuitry, for deactivating the inhaler in the event the inhaler is exposed to ambient temperature conditions outside of a predetermined range.
- 39. In a dry powder inhaler comprising a first chamber, a vibrator operatively connected to said first chamber in which a dry powder is deaggregated by said vibrator and separated by size, and a second chamber in which the size-separated deaggregated powder is picked up by an air stream generated during inhalation by a patient through an opening in said inhaler and is carried for introduction into the patient, the improvement which comprises electronic circuitry for controlling dosing, said electronic circuitry including a controller for controlling operation of said vibrator over a plurality of frequencies.
Specification