Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Patent
1994-08-11
1996-08-06
Lucchesi, Nicholas D.
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
A61C 116
Patent
active
055428452
ABSTRACT:
A dental syringe safety sheath having a modified duckbill valve for minimizing cross-contamination between dental patients is provided. The sheath includes a generally tubular body member having a nozzle engaging portion and a discharge portion. The nozzle engaging portion is configured to substantially fit over and cover the nozzle of a dental syringe having a discharge orifice. The discharge portion defines a fluid passageway having an inlet adjacent the discharge orifice and outlet downstream therefrom. The fluid passageway progressively narrows in cross-section between the inlet and the outlet to form a substantially wedge-shaped cavity terminating in a slit disposed between a pair of opposing sealing lips. The cross-section of the sealing lips between the ends of the slit is wider than the corresponding cross-section of the sealing lips at the lip margins. As an additional or alternative feature of the present invention, the collective width of the sealing lips measured along a discrete portion of the lips between the ends of the slit being at least as great as the length of the lips measured along the slit.
REFERENCES:
patent: 2644663 (1953-07-01), Klinger
patent: 3066767 (1962-12-01), Djordjevitch
patent: 3896849 (1975-07-01), Ervin et al.
patent: 3941149 (1976-03-01), Mittleman
patent: 4434810 (1984-03-01), Atkinson
patent: 4524805 (1985-06-01), Hoffman
patent: 4859182 (1989-08-01), Nerli
patent: 4998880 (1991-03-01), Nerli
patent: 5197875 (1993-03-01), Nerli
A.C. Hoffman Engineering, Inc.
Lucchesi Nicholas D.
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