Dry powder inhaler
First Claim
1. A dry powder inhaler for delivering a dose of medicament for inhalation by a user, the dose being contained in a medicament pack having an interior and a puncturable lid, the inhaler comprising a drug entrainment device including a drug outlet tube terminating with a primary piercing element to pierce an opening in said lid when the medicament pack is located in the inhaler, a secondary piercing member to pierce a plurality of peripheral openings in said lid and, an airflow path to enable the supply of a charge of gas into the medicament pack via said peripheral openings to scour the interior of the pierced medicament pack such that substantially all of the dose is entrained in the gas and flows out of the medicament pack via the drug outlet tube.
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Accused Products
Abstract
An Inhaler for delivering an aerosolised dose of a powdered drug for inhalation by a user is disclosed. The inhaler comprises a drug entreinment device vice to a receive a package having a piercable lid containing a dose to be delivered, the device including a drug outlet tube terminating with a primary piercing element to pierce an opening in said lid when a package is located in the inhaler, a secondary piercing member to pierce a plurality of peripheral openings in said lid and, an airflow path to enable the supply of a charge of gas into the package via said peripheral openings to scour the interior of a pierced package such that all or substantially all of the dose is entrained in the gas and flows out of the package via the drug outlet tube. A medicament pack is also disclosed.
63 Citations
31 Claims
- 1. A dry powder inhaler for delivering a dose of medicament for inhalation by a user, the dose being contained in a medicament pack having an interior and a puncturable lid, the inhaler comprising a drug entrainment device including a drug outlet tube terminating with a primary piercing element to pierce an opening in said lid when the medicament pack is located in the inhaler, a secondary piercing member to pierce a plurality of peripheral openings in said lid and, an airflow path to enable the supply of a charge of gas into the medicament pack via said peripheral openings to scour the interior of the pierced medicament pack such that substantially all of the dose is entrained in the gas and flows out of the medicament pack via the drug outlet tube.
- 23. An inhalation device comprising a medicament pack, said medicament pack comprising a drug storage chamber to contain a single dose of medicament and an aerosolising nozzle for generating an inhalable aerosol of the dose for inhalation by a user when a charge of gas is passed through the medicament pack.
Specification