Dry powder medicament inhalator having an inhalation-activated flow diverting means for triggering delivery of medicament
US6209538A · kind A · utility
Inventors
Key dates
| Filing date | Mar 17, 1998 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Mar 17, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/064
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An inhalation-activated inhalator having a primary inhalation passage and a secondary inhalation passage disposed in communication with the primary inhalation passage and a source of medicament. The primary inhalation passage has airflow inhibiting mechanism connected to a blocking plate positioned to selectively block fluid flow in the secondary inhalation passage. As the user's inhalation reaches a defined rate, the flow inhibiting mechanism restricts flow through the primary inhalation passage and moves the blocking plate to enable airflow through the secondary passage. Thus, as the user achieves a desired inhalation rate, the medicament is provided through the secondary inhalation passage, thereby optimizing the delivery of medicament to the lungs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.