Dispensing apparatus
US5184761A · kind A · utility
95Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | Sep 17, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M15/0096
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An inhaler for medical aerosols includes a flow sensor 32 in the form of a piston which is movable against a spring bias 35 in response to inhalation. Movement of the piston unseats a valve member 30 allowing a pressurized dose to be released through a nozzle 67. A uniform impedance to the flow of air is provided throughout the movement of the piston to avoid any discontinuity in the flow. The apparatus is particularly suited for inhalers used in the treatment of asthma.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.