US 11,998,684 B2
Dosing system for a nebulizer
Paul Goodwin, Cambridgeshire (GB); Andreas Mark Meliniotis, Cambridgeshire (GB); Roger William Clarke, Cambridgeshire (GB); and Tobias Kolb, Gauting (DE)
Assigned to VECTURA DELIVERY DEVICES LIMITED, Chippenham (GB)
Appl. No. 16/624,334
Filed by VECTURA DELIVERY DEVICES LIMITED, Wiltshire (GB)
PCT Filed Jun. 19, 2018, PCT No. PCT/EP2018/066296
§ 371(c)(1), (2) Date Dec. 19, 2019,
PCT Pub. No. WO2018/234324, PCT Pub. Date Dec. 27, 2018.
Claims priority of application No. 17177225 (EP), filed on Jun. 21, 2017.
Prior Publication US 2020/0147326 A1, May 14, 2020
Int. Cl. A61M 15/00 (2006.01)
CPC A61M 15/0065 (2013.01) [A61M 15/0085 (2013.01); A61M 2202/0468 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A dosing system for an inhalation device, comprising:
(a) a filling chamber for receiving a liquid to be aerosolized, the filling chamber having a first outer wall, a base and a first inner wall, the filling chamber further having an outlet opening which is defined by the inner wall of the filling chamber,
(b) a reservoir chamber for supplying the liquid to an aerosol generator positioned at a first end of the filling chamber, wherein the reservoir chamber is operatively connected to the outlet opening, and
(c) a plunger which is mounted on a hinge which includes an overflow chamber, said plunger being configured to be inserted into the filling chamber and said overflow chamber being configured to receive at least a portion of the liquid from the filling chamber when the plunger is inserted into the filling chamber, wherein a first portion of the inner wall of the filling chamber proximate to the hinge is higher than a second portion of the inner wall of the filling chamber distal from the hinge with respect to the first portion of the inner wall of the filling chamber so that when the filling chamber is filled with liquid and the plunger is inserted into the filling chamber by pivoting the plunger about the hinge, part of the liquid is displaced by the plunger over the second portion of the inner wall of the filling chamber and into the reservoir chamber via the outlet opening, and some or all of the remaining liquid is displaced by the plunger from the filling chamber into the overflow chamber.