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US 7,434,579 B2Granted
Breath actuated dry powder inhaler and tape dose strip
AssigneeValois SAS
InventorsMatthew Young, Stuart Kay, Neil Harrison, Ian Darby, Peter Crew, Anne Powell, Cheryl Vanessa Rogerson
Life of this patent
Estimating the term…
Abstract
A dry powder inhaler, including a powder dispersion engine with one or more beads in a dispersion chamber, an airflow path leading into the dispersion chamber, an elongated tape with spaced apart blisters, each blister holding a dose of a dry powder, and blister opening mechanism that sequentially opens the blisters on the elongated tape and releases the dose of each blister into the airflow path.
Claims13
A dry powder inhaler comprising:
- a powder dispersion chamber including one or more beads moveable around within the dispersion chamber;
- an airflow path leading into the dispersion chamber;
- an elongated tape containing a plurality of spaced apart blisters, with each blister holding a dose of a dry powder pharmaceutical;
- and
- blister opening means for sequentially opening the blisters on the elongated tape and releasing the dose of each blister into the airflow path;
- and
- a mouthpiece connecting into the dispersion chamber, and a breath trigger that automatically actuates the blister opening means to open a blister when a user of the inhaler inhales on the mouthpiece;
- wherein the mouthpiece at an open position allows the breath trigger to hold the blister opening means against movement
- wherein at least one of the one or more beads comes into contact with the powder pharmaceutical as the powder pharmaceutical travels through the dispersion chamber.
6 more elements
A dry powder inhaler comprising:
- a powder dispersion chamber including one or more beads moveable around within the dispersion chamber;
- an airflow path leading into the dispersion chamber;
- an elongated tape containing a plurality of spaced apart blisters, with each blister holding a dose of a dry powder pharmaceutical;
- and
- blister opening means for sequentially opening the blisters on the elongated tape and releasing the dose of each blister into the airflow path;
- wherein at least one of the one or more beads comes into contact with the powder pharmaceutical as the powder pharmaceutical travels through the dispersion chamber;
- wherein the blister opening means includes a spring biased ratchet engageable to rotate a drive spool when released by a breath trigger in the airflow path;
- wherein the mouthpiece at an open position allows the breath trigger to hold the blister opening means against movement.
5 more elements
A dry powder inhaler comprising:
- at least one blister holding a dose of a dry powder pharmaceutical;
- blister opening means for opening a blister and releasing the dose;
- and
- a powder dispersion chamber including one or more beads moveable around within the dispersion chamber;
- and
- a breath trigger that automatically actuates said blister opening means to open a blister when a user of the inhaler inhales;
- and
- wherein the at least one bead comes into contact with the released dose of powder pharmaceutical as the released dose of powder pharmaceutical travels through the dispersion chamber before exiting the inhaler;
- wherein the mouthpiece at an open position allows the breath trigger to hold the blister opening means against movement.
6 more elements
A dry powder inhaler comprising:
- a powder dispersion chamber including one or more beads moveable around within the dispersion chamber;
- an airflow path leading into the dispersion chamber;
- an elongated tape containing a plurality of spaced apart blisters, with each blister holding a dose of a dry powder pharmaceutical;
- a breath trigger;
- and
- a device that sequentially opens the blisters on the elongated tape and releases the dose of each blister into the airflow path, the device comprising a spring biased ratchet that rotates a drive spool when the spring biased ratchet is released by the breath trigger in the airflow path;
- and
- wherein at least one of the one or more beads comes into contact with the powder pharmaceutical as the powder pharmaceutical travels through the dispersion chamber;
- wherein the mouthpiece at an open position allows the breath trigger to hold the device that sequentially opens the blister against movement.
6 more elements
A dry powder inhaler comprising:
- a powder dispersion chamber including one or more beads moveable around within the dispersion chamber;
- an airflow path leading into the dispersion chamber;
- an elongated tape containing a plurality of spaced apart blisters, with each blister holding a dose of a dry powder pharmaceutical;
- and
- blister opening means for sequentially opening the blisters on the elongated tape and releasing the dose of each blister into the airflow path;
- wherein at least one of the one or more beads comes into contact with the powder pharmaceutical as the powder pharmaceutical travels through the dispersion chamber,
- a housing having the airflow path leading from an inlet, past a powder release location, to a mouthpiece;
- a drive spool engaged with a capstan adjacent to the powder release location;
- a ratchet,
- a spring biasing the ratchet into engagement with the drive spool;
- and
- means for triggering rotational movement of the ratchet;
- and
- wherein the blister opening is acuated each time the ratchet makes a rotational movement;
- wherein the mouthpiece at an open position allows the breath trigger to hold the blister opening means against movement.
12 more elements
Dependencies are inferred from the claim text.