BRAMBILLA, GAETANO G,JOHNSON, ROBERT R,LEWIS, DAVID ANDREW DA,.布拉姆比拉,.約翰遜,.劉易斯
申请号：
HK15110601.3
公开号：
HK1209669A
申请日:
2015.10.28
申请国别(地区):
HK
年份:
2016
代理人:
摘要：
Actuators for an aerosol inhalation device containing a housing adapted to receive an aerosol canister containing a pressurized medicament formulation, a mouthpiece portion through which the user inhales, a nozzle block and an orifice and a tubular element extending in the mouthpiece portion from the orifice aperture in a longitudinal axis substantially aligned with a longitudinal axis of the mouthpiece portion provide a significant reduction in the non-respirable, coarse fraction of the emitted aerosol medicament via inertial impaction and retention in the actuator than in the oro-pharynx, with consequent less associated side effects and oral candidiasis in the patient. In addition the presence of the tubular element has minimal, negligible impact on the fine particle dose and on the particle size distribution (PSD) of the delivered particles having aerodynamic diameter lower than 9 mum.
