Internal vortex mechanism for inhaler device
US6367471B1 · kind B1 · utility
71Cited by
12References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1999 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Nov 1, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2206/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A metered dose inhaler for use with a pressurized aerosol canister includes a housing defining a conduit with a mouthpiece, and an actuator with a nozzle discharge orifice arranged to discharge aerosol into the conduit. Vortex generators positioned within the wall of the conduit and in fluid communication with air inlets for receiving ambient outside air, provide the inner wall of the conduit with a circumferential-swirling turbulent boundary layer flow to minimize impaction of medication on the inner surfaces of the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.