US 2018/0021529 A1 · DRY POWDER INHALER

Abstract

The present invention provides in part dry powder inhaler (DPI) devices for dispensing dry powder and methods for using the same. The DPI devices feature exchangeable cartridges having drum mechanisms that prepare metered doses of dry powder, and are able to direct air in a turbulent manner sufficient to entrain and deagglomerate a dose of dry powder for delivery into a user's lungs. The DPI devices feature a reservoir of dry powder advanced by a plunger, as well as a gauge that advances with the plunger to indicate the amount of dry powder remaining in the reservoir.

Claims20

Dependent claims

A dry powder cartridge device, comprising:

an elongate body having an anterior end and a posterior end;
a delivery lumen positioned at the anterior end of the body;
a powder reservoir positioned at the posterior end of the body;
a powder metering drum assembly positioned anterior to the powder reservoir;
and
an actuating cap positioned at the anterior end of the body mechanically engaged to the powder metering drum;
wherein an amount of powder within the powder reservoir is advanced towards the powder metering drum by a piston.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/646,205Filed 11 Jul 2017

Priority

21 Jul 2016

Published

25 Jan 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

A61M 15/0008
Using rotating means: rotating by airflow
A61M 11/003
Particle size control: by passing the aerosol trough sieves or filters
A61M 15/0026
With caps: hinged caps
A61M 15/0065
Inhalators: inhalators with dosage or measuring devices

Dry powder inhaler

Life of this patent

Dry powder inhaler

Life of this patent

Abstract

Claims20