Method and apparatus for protection of soft tissues against a teeth whitening substance
US10631965B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2017 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Dec 4, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7455
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A whitening smart pen apparatus (10) for automatically dispensing a teeth whitening substance onto one or more teeth of a user comprises a fluid reservoir (16), a nozzle (18) having an output port (26), a fluid dispenser (20), a sensor (22) and a controller (24). The fluid dispenser dispenses the teeth whitening substance from the fluid reservoir to the nozzle and is output via the output port. The sensor, positioned in an advance dispensing direction of the nozzle, senses a target surface that comprises either (i) a tooth surface (12) or (ii) other surface (14). The controller (24) is configured for (i) controlling a gating of the fluid dispenser (20) to dispense the teeth whitening substance from the fluid reservoir (16) in response to the sensor (22) detecting the tooth surface (12), and (ii) stopping or disabling the gating of the fluid dispenser to stop or disable a dispensing of the teeth whitening substance from the fluid reservoir in response to the sensor (22) detecting the other surface (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.