Air polishing prophylaxis system
US7993135B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2005 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Dec 13, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/0217
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental apparatus provides a substantially uniform concentration of abrasive material entrained in a pressurized gas to a desired location substantially irrespective the amount of abrasive material in a pressurized container of the apparatus, and resists clogging by the abrasive material. The apparatus includes a control unit having a container that secures the abrasive material, the abrasive material in the container becoming entrained in pressurized gas received from a dental unit. The concentration of the mixture of entrained abrasive material in pressurized gas is maintained by upwardly directing the flow of the mixture in a first conduit against a cap, a portion of the entrained abrasive material returning to the container, with the regulated mixture of entrained abrasive material in pressurized gas being delivered through a hand piece to the desired location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.