Oral cavity cleaning device
US6659768B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2001 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Apr 24, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46B11/063
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A waste liquid tank B is connected to a cleaning head 60 through a waste tube 25. Squeezing means 61 is provided in a waste flow passage of from an end 60a of the cleaning head 60 to a suction port b of the waste liquid tank B to squeeze the waste flow passage. A pump A is driven with a cleaning head 60 introduced in the oral cavity to suck the residual matter in the oral cavity and to drain it into the waste liquid tank B in order to clean the oral cavity. When the residual matter cannot be sucked with a normal suction force, the waste flow passage is squeezed by the squeezing means 61 to increase the negative pressure in the waste tube 25. Thereafter, the squeeze is released to suck the residual matter at a breath with the increased negative pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.