Breath-activated metered-dose inhaler
First Claim
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1. An apparatus for dispensing air-mixed medication comprising:
- a mouthpiece having a first tube disposed within a second tube, the first tube having a medication discharge passage for discharging medication, the second tube having ends and a permanent air channel therethrough such that the air channel does not communicate with the discharge passage and the air channel communicates with ambient air at both ends of the second tube for facilitating an open mouth technique;
a first position disposed on the first tube such that when inhalation is taken from the first position a first medication-to-air ratio is provided; and
a second position disposed on the second tube such that when inhalation is taken from the second position a second medication-to-air ratio is provided, wherein the first medication-to-air ratio provided by the first mouth position is different from the second medication-to-air ratio provided by the second mouth position.
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Abstract
The invention provides a device for dispensing medication in the respiratory system, with provision for breath-activation; open and closed-mouth technique; recording and control of dosage; and enhanced atomization of liquid medication. This is accomplished with a device that uses a medication canister with an integral battery and circuitry, the battery providing power for electro-mechanical activation, counting medication dosage used or remaining, and controlling device activation. The invention has capability for use with dry and wet medication, and is easily cocked with a simple manual action.
144 Citations
24 Claims
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1. An apparatus for dispensing air-mixed medication comprising:
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a mouthpiece having a first tube disposed within a second tube, the first tube having a medication discharge passage for discharging medication, the second tube having ends and a permanent air channel therethrough such that the air channel does not communicate with the discharge passage and the air channel communicates with ambient air at both ends of the second tube for facilitating an open mouth technique;
a first position disposed on the first tube such that when inhalation is taken from the first position a first medication-to-air ratio is provided; and
a second position disposed on the second tube such that when inhalation is taken from the second position a second medication-to-air ratio is provided, wherein the first medication-to-air ratio provided by the first mouth position is different from the second medication-to-air ratio provided by the second mouth position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A breath-activated apparatus for dispensing air-mixed medication comprising:
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a mouthpiece having a first tube disposed within a second tube, the first tube having a medication discharge passage for discharging medication, the second tube having ends and a permanent air channel therethrough such that the air channel does not communicate with the discharge passage and the air channel communicates with ambient air at both ends of the second tube for facilitating an open mouth technique;
a first position disposed on the first tube such that when inhalation is taken from the first position a first medication-to-air ratio is provided; and
a second position disposed on the second tube such that when inhalation is taken from the second position a second medication-to-air ratio is provided. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification