US 11,964,097 B2
Inhaler
Bill Treneman, Suffolk (GB); Charlotte Leeder, Suffolk (GB); Andrew Halket, Suffolk (GB); Simon Ingram, Cambridge (GB); Chris Hurlstone, Cambridge (GB); Valerio Lelio Cereda, Cambridge (GB); Joe Daintrey, Cambridge (GB); Warren Isaacs, Cambridge (GB); Martin Karlsson, Cambridge (SE); Jake Christofferson, Sodertalje (SE); Rune Ducce, Soldertalje (SE); and Simon Berry, Sodertalje (SE)
Assigned to AstraZeneca AB, Sodertalje (SE)
Appl. No. 16/978,250
Filed by ASTRAZENECA AB, Sodertalje (SE)
PCT Filed Mar. 6, 2019, PCT No. PCT/EP2019/055521
§ 371(c)(1), (2) Date Sep. 4, 2020,
PCT Pub. No. WO2019/170718, PCT Pub. Date Sep. 12, 2019.
Claims priority of provisional application 62/639,704, filed on Mar. 7, 2018.
Prior Publication US 2021/0008302 A1, Jan. 14, 2021
Int. Cl. A61M 15/00 (2006.01)
CPC A61M 15/002 (2014.02) [A61M 15/0013 (2014.02); A61M 15/0025 (2014.02); A61M 15/0026 (2014.02); A61M 15/0086 (2013.01); A61M 15/009 (2013.01); A61M 15/0091 (2013.01); A61M 15/0095 (2014.02); A61M 15/0071 (2014.02); A61M 15/0096 (2014.02); A61M 2205/8281 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An inhaler for delivery of a medicament by inhalation, the inhaler comprising:
an inhaler body for receiving a canister having a dispensing valve;
a drive mechanism comprising a biasing member and a displaceable member, the drive mechanism for driving the canister, when received in the inhaler body, from a rest position in which the dispensing valve is closed to at least an actuating position in which the dispensing valve is open, the drive mechanism driving the canister when the biasing member is released from a loaded configuration to move the displaceable member from a first position to a second position;
a resetting mechanism for resetting the drive mechanism by moving the displaceable member from the second position to the first position and reloading the biasing member to the loaded configuration; and
a return mechanism for returning the canister from the actuating position to the rest position;
wherein the return mechanism comprises a damping system including a rotary damper, the damping system configured to enable the canister to automatically return from the actuating position to the rest position within a predetermined time period measured from the release of the biasing member from the loaded configuration, and the rotary damper configured to assist in controlling a speed of the canister during at least a portion of movement of the canister between the actuating position and the rest position.