Inhaler
AssigneeAstraZeneca AB
InventorRune Ducce
Life of this patent
Estimating the term…
Abstract
An inhaler 10 for delivery of a medicament by inhalation. The inhaler 10 has a drive mechanism, a canister drive 22 for receiving a canister 50 of medicament, a spring 20, and a trigger mechanism with a latch 35. The latch 35 has a locked position to prevent linear movement of the canister drive 22 and holds the spring 20 in a loaded configuration; and an unlocked position in which the latch 35 is disengaged from the canister drive 22. The trigger mechanism comprises a blocker 32. The blocker 32 has a blocking position in which it contacts the latch 35 to block movement from the locked position to the unlocked position; and a rotated position in which the blocker 32 is disengaged from the latch 35 to allow it to lock and unlock.
Claims13
An inhaler (10) for delivery of a medicament by inhalation, the inhaler (10) comprising:
- a drive mechanism comprising a canister drive (22) for receiving a canister (50) of medicament, a biasing means (20), and a trigger mechanism;
- the trigger mechanism comprising:
- a latch (35) having:
- a locked position in which the latch contacts the canister drive (22) to prevent linear movement of the canister drive (22) and holds the biasing means (20) in a loaded configuration;
- and
- an unlocked position in which the latch (35) is disengaged from the canister drive (22) and releases the biasing means (20) from the loaded configuration to drive the canister drive (22) from a rest position to an actuated position;
- and
- a blocker (32) having:
- a blocking position in which the blocker contacts the latch (35) to block movement thereof from the locked position to the unlocked position;
- and
- a rotated position in which the blocker is disengaged from the latch (35) and allows movement of the latch (35) from the locked position to the unlocked position;
- and
- the blocker (32) is rotatable in response to a force applied to the blocker (32);
- and wherein the inhaler further comprises a blocker spring (33) for biasing the blocker (32) into the blocking position, and wherein the blocker spring (33) is configured to abut a protrusion of the blocker (32).
Dependencies are inferred from the claim text.