US 12,064,547 B2
Dry powder inhaler device
Robin Craig Cocker, Derby (GB); Christopher Iain Davidson, Cambridge (GB); Steve Han, Huntington Beach, CA (US); Ben Alexander King, Oundle (GB); Paul Mutti, Spilsby (GB); Alex Stenzler, Long Beach, CA (US); and James Tibbatts, Cambridge (GB)
Assigned to Philip Morris Products S.A., Neuchâtel (CH)
Appl. No. 17/422,797
Filed by PHILIP MORRIS PRODUCTS S.A., Neuchâtel (CH)
PCT Filed Jan. 13, 2020, PCT No. PCT/IB2020/050232
§ 371(c)(1), (2) Date Jul. 14, 2021,
PCT Pub. No. WO2020/148631, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 19151681 (EP), filed on Jan. 14, 2019.
Prior Publication US 2022/0126034 A1, Apr. 28, 2022
Int. Cl. A61M 15/00 (2006.01); A24F 42/20 (2020.01); A24F 42/60 (2020.01)
CPC A61M 15/0023 (2014.02) [A24F 42/20 (2020.01); A24F 42/60 (2020.01); A61M 15/0066 (2014.02); A61M 2202/064 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dry powder inhaler comprising:
an elongate body comprising a proximal end, a distal end and an air inlet disposed therebetween;
a reservoir comprising a reservoir cavity;
an airway assembly at least partially housed within the body, the airway assembly comprising a first airway, the airway assembly comprises an inner airway element and an outer airway element, the outer airway element at least partially surrounding the inner airway element, wherein the inner airway element comprises at least one curved fin that protrudes into the outer element airway;
a mouthpiece comprising a mouthpiece airway that is connected to the first airway;
an airway head attached to the airway assembly that extends into the reservoir cavity; and
at least one airway assembly opening in the airway assembly connecting the reservoir cavity to the first airway.