Oral care appliance using pulsed fluid flow
US10292797B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Mar 10, 2014 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Jun 1, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/0217
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An oral care appliance comprises: a fluid pump assembly (46); a source of liquid (50); and a source of gas (12), wherein the pump is in operative communication with the sources of liquid and gas to produce a series of gas-injected fluid pulses, directed to a nozzle assembly (80) from which the resulting pulses are directed to the teeth. The individual pulses have a pulse width in the range of 0.001-0.5 seconds, a pulse height from 0.1-10 Newtons, and a rise/fall time range of 0.5-250 ms, a repetition rate in the range of 2 Hz to 20 Hz. The gas/liquid mixture range from 40-95% volume to volume, gas to liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.