Nebulizer mouthpiece for reducing drug loss
US9248252B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2012 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Dec 10, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for reducing a loss of medication from a nebulizer includes the steps of entraining a liquid medication into a first flow of a pressurized gas into a nebulizer chamber and also entraining an additional amount of the liquid medication into a second flow of ambient air drawn into the nebulizer chamber through an opening when a patient inhales through the nebulizer chamber. When the patient exhales, a portion of the exhaled breath is directed into the outlet of the nebulizer chamber, thereby increasing a backpressure within the outlet and substantially stopping the second flow of ambient air into the nebulizer chamber, thereby decreasing the amount of medication lost to the ambient environment while the patient is not inhaling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.