Patent ID: 9533112
Date: 2017-01-03
CPC Classifications: A61M,B05B

Claim:
1. Inhaler for active dispensing of an inhalation formulation as an aerosol, comprising: a conveying means for at least one of conveying and nebulizing the inhalation formulation for generating the aerosol and having a nozzle for dispensing of the formulation, and a mouthpiece coaxially surrounding the nozzle and provided with at least one fluidically connected or associated air supply opening for enabling ambient air to be drawn into the mouthpiece at a location upstream of said nozzle in a direction of flow toward an outlet end of the mouthpiece, wherein a flow path for the ambient air into said mouthpiece from the at least one air supply opening extends from the at least one air supply opening within a space between an inner wall of the mouthpiece and the nozzle around the outside of said nozzle toward an open end thereof and has a total flow resistance of at least 60,000 Pa wherein the flow resistance is produced at least in part by a replaceable apertured insert plate that has openings with a fixed flow-through cross section and that is clampingly engages against the inner wall of the mouthpiece with an outwardly flaring sealing lip that is mounted on an outer edge of the apertured insert plate and at a protrusion of the nozzle; and wherein the sealing lip is radially and axially inclined in a direction away from the insert plate and toward said mouthpiece.