Patent · US Active

Dry powder inhalers

US8261739B2 · kind B2 · utility

14Cited by

35References

31Claims

0Family size

Assignee

CAMBRIDGE CONSULTANTS LIMITED · US

Inventors

David Harris · Hollis, US
Simon James Smith · Hertford, GB

Key dates

Filing date	Dec 9, 2005
Grant date	Sep 11, 2012
Priority date	—
Expiry date	Feb 15, 2029

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2206/16
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A dry powder inhaler has a main airflow path including a cyclone chamber (16) having an air inlet and being so shaped that at least a part of the chamber decreases in cross-sectional area in a direction away from the air inlet, so as thereby in use to set up a reverse flow cyclone in the chamber. A bypass airflow path (8) bypasses the cyclone chamber and the main and bypass airflow paths communicate with a mouthpiece (6). The cyclone chamber may be provided by a part (22) which is removable from the rest of the inhaler for regular replacement thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.