Breath actuated dry powder inhaler and tape dose strip
First Claim
1. A method for operating a dry powder inhaler, providing a dry powder inhaler, said dry powder inhaler comprising a dose tape having spaced apart doses of a powder pharmaceutical, each dose being in a respective sealed blister, said inhaler comprising a blister opening system which sequentially opens a blister on the tape, said blister opening system being breath actuated, the method comprising the steps of:
- routing the dose tape between first and second rotating elements;
spring biasing the first rotating element to turn in a first direction;
holding the first rotating element from rotating, against the spring biasing; and
releasing the first rotating element, and allowing it to rotate a fraction of one rotation, when air flows adjacent to the first rotating element.
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Accused Products
Abstract
A method for operating a dry powder inhaler, the dry powder inhaler having a dose tape having spaced apart doses of a powder pharmaceutical, each dose being in a respective sealed blister. The inhaler includes a breath actuated blister opening system that sequentially opens a blister on the tape. The method involves routing the dose tape between first and second rotating elements; spring biasing the first rotating element to turn in a first direction; holding the first rotating element from rotating against the spring biasing; and releasing the first rotating element, and allowing it to rotate a fraction of one rotation, when air flows adjacent to the first rotating element.
34 Citations
14 Claims
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1. A method for operating a dry powder inhaler, providing a dry powder inhaler, said dry powder inhaler comprising a dose tape having spaced apart doses of a powder pharmaceutical, each dose being in a respective sealed blister, said inhaler comprising a blister opening system which sequentially opens a blister on the tape, said blister opening system being breath actuated, the method comprising the steps of:
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routing the dose tape between first and second rotating elements; spring biasing the first rotating element to turn in a first direction; holding the first rotating element from rotating, against the spring biasing; and releasing the first rotating element, and allowing it to rotate a fraction of one rotation, when air flows adjacent to the first rotating element. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for operating a dry powder inhaler, providing a dry powder inhaler, said dry powder inhaler comprising a dose tape having spaced apart doses of a powder pharmaceutical, each dose being in a respective sealed blister, said inhaler comprising a blister opening system which sequentially opens a blister on the tape, said blister opening system being breath actuated, the method comprising the steps of:
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routing the dose tape between first and second rotating elements; spring biasing the first rotating element to turn in a first direction; holding the first rotating element from rotating against the spring biasing; and triggering the release of the first rotating element by inhaling through the inhaler. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method for operating a dry powder inhaler, comprising the steps of:
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providing the dry powder inhaler, which comprises a dose tape having spaced apart doses of a powder pharmaceutical, each dose being in a separately sealed blister, the inhaler comprising a blister opening mechanism for sequentially opening each sealed blister on the tape, wherein the blister opening mechanism is breath actuated; routing the dose tape between first and second rotating elements; spring biasing the first rotating element to turn in a first direction; holding the first rotating element from rotating against the spring biasing; and actuating the blister opening mechanism and triggering the release of the first rotating element by inhaling through the inhaler.
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Specification