Patent · US Expired

System for dispensing pharmaceutically active compounds

US5934273A · kind A · utility

88Cited by

15References

4Claims

0Family size

Assignee

AB Astra · SE

Inventors

Jan Andersson · Erlangen, DE
Hans Jagfeldt · Lund, SE
Eva Trofast · Lund, SE
Kjell I. L. Wetterlin · Södra Sandby, SE

Key dates

Filing date	May 30, 1997
Grant date	Aug 10, 1999
Priority date	—
Expiry date	May 30, 2017

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K31/58
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A system for dispensing a clinically effective dose of an inhalable, pharmaceutically active compound, which system includes a dry powder inhaler device containing a powder containing the pharmaceutically active compound, wherein (a) of the powder particles dispensed by the inhaler device (the "metered DPI dose"), at least 40% are less than about 10 microns in diameter at the point the particles exit the inhaler, (b) the metered DPI dose is sufficient to produce a clinically effective result in a patient; and (c) the amount of the compound in the metered DPI dose is not more than 70% of the minimal amount of the compound which, when dispensed in a pressurized metered dose inhaler, produces an equivalent clinically effective result in the same patient.

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