Dispenser for dental compositions
US7748980B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2006 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Sep 30, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/31595
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to an apparatus for providing specifically metered doses of at least two flowable dental materials in desired ratios to one another. In particular, the present invention allows for controlled metering and dispensing of two or more flowable dental substances which when subsequently mixed form a dental bonding composition, dental adhesive, dental cement, or other dental restorative or preparative materials. Specifically, one embodiment of the present invention utilizes a multi-rack system as well as a drive spring action to provide a substantial mechanical advantage to the user such that a relatively long throw of the dispensing button creates a relatively short, metered distance of movement of the multiple racks and corresponding pistons in the each lumen of a cartridge containing the component of the desired dental composition, allowing for small, metered doses of each flowable dental component to be dispensed from the apparatus in the proper proportions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.