Indicating device
US6761161B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2001 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Jan 21, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06M1/283
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An indicating device for indicating the number of metered doses of medicaments that have been dispensed from or remain in a container having a valve stem extending longitudinally therefrom and moveable between an open and closed position. The indicating device includes a base member adapted to be mounted to the container, a cap member moveably connected to the base member, one or more indicator members rotatably mounted to the cap member and an indicating mechanism adapted to rotate the indicator member an incremental amount upon a predetermined number of axial movements of the cap member relative to the base member. A preferred embodiment of the indicating device includes a ratchet wheel, a drive member selectively engaging the indicating member, a pawl selectively engaging the ratchet wheel, and a non-return member adapted to selectively engage the ratchet wheel so as to maintain a unidirectional rotation of the ratchet wheel. In one embodiment, the indicating device also includes a usage indicator member having usage indicia that indicates the number of usage cycles completed or remaining for the indicating device. A method for indicating the number of metered doses dispensed fr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.