Dentistry – Apparatus – Having suction orifice
Patent
1999-06-21
2000-05-30
Lewis, Ralph A.
Dentistry
Apparatus
Having suction orifice
604171, A61C 1706
Patent
active
060684763
ABSTRACT:
A disposable saliva ejector assembly for use in connection with a vacuum source for withdrawing saliva and bioburden from the oral cavity of a dental patient. The saliva-ejector assembly includes a flexible hollow tube having a first end provided with a suctioning tip and a second end adapted for connecting to a vacuum source. The assembly further includes a flexible plastic cover-slip having a first end fixedly attached to the tube at a distance inwardly of the tube second end sufficient to permit a friction fit connection between the tube second end and a tube receiving fixture of the vacuum source, and a second free end. The cover-slip is adapted to be movable between a first, pre-use position, wherein the cover-slip envelopes the tube with the second free end of the cover-slip extending beyond the suctioning tip, and a second, use position wherein the cover-slip is peeled inside out in order to expose the suctioning tip and to protectively cover the connection between the tube second end and the tube receiving fixture as well as a portion of vacuum tubing connected to said tube receiving tubing.
REFERENCES:
patent: 1060665 (1913-05-01), Bell
patent: 4772275 (1988-09-01), Erlich
patent: 4810194 (1989-03-01), Snedden
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