Inhaler for medicament
US6062214A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1997 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Oct 28, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2206/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to inhaler products, such as medicaments, and particularly to an inhaler for transferring to a patient a metered dose of medicament contained in a pressurized dispensing container. The inhaler includes a housing for receiving a pressurized dispensing container of medicament and a mouthpiece for insertion into the mouth or a user of the inhaler. An outlet in the housing communicates with the mouth piece via a duct ending in an outlet. At least one air inlet is provided for allowing air into the inhaler. The air inlet(s) being positioned downstream relative to the duct outlet. A restricted airflow passage is provided between the air inlet(s) and a location adjacent to the outlet of the duct. The inhaler also includes a vortex generating arrangement positioned in the restricted airflow passage, such that, in use, when a user inhales through the mouthpiece, a swirling airflow is created from the inlet(s) to the mouthpiece along the passage towards the duct outlet. The swirling airflow exits the restricted airflow passage to create a swirling airflow in the neck region of the duct outlet that swirls about a central axis of the duct outlet and the swirling airflow h…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.