Delivery device
AssigneeAstraZeneca AB
InventorAllan Dagsland
Life of this patent
Estimating the term…
Abstract
A delivery device for administering particulate medicaments, such as dry powder. The delivery device comprises a body and a flow path comprising a chamber with an inlet and an outlet for the stream of air. The chamber is rotatable in relation to the body. Dislodging means are arranged in contact with the inner surface of the chamber. The dislodging means and the chamber are relatively rotatable in relation to one another, such that the inside of the chamber is cleaned by the dislodging means when the dislodging means and the chamber are rotated in relation to one another.
Claims10
A delivery device for administering particulate medicament to a subject, the device comprising:
- a body defining at least a portion of a flow path for a stream of air drawn through the device, the flow path including a chamber defined at least partially by a surface that is rotatable with respect to the body, the chamber having an inlet and an outlet;
- and
- a medicament dislodger that is attached to the body and disposed within the chamber, wherein the dislodger is in contact with a wall at least partially defining the chamber and a mouthpiece insert, the dislodger configured to remove particulate medicament from the wall as the surface is rotated with respect to the body and the mouthpiece insert, wherein the dislodger includes a helix positioned between the inlet and the outlet of the chamber and in contact with the wall of the mouthpiece insert, the helix being arranged to remove particulate medicament from the wall of the mouthpiece insert during rotation of the dislodger with respect to the mouthpiece insert and impart a rotational movement to the air drawn through the delivery device.
Dependencies are inferred from the claim text.