Dentistry – Apparatus – Having intra-oral dispensing means
Patent
1991-12-13
1993-03-30
Swiatek, Robert P.
Dentistry
Apparatus
Having intra-oral dispensing means
433116, A61G 1702, A61C 116
Patent
active
051978750
ABSTRACT:
Dental syringe covers are described in several different forms. In one form the syringe cover is of a soft, rubbery material at least at its tip, the tip being formed into a one-way valve by a duckbill construction so that fluid cannot enter from outside. In all embodiments the syringe cover, tapered in shape, fits tightly over the metal dental syringe so that no liquid from the syringe can flow backward over the surface of the syringe. Another feature is a longitudinal gap between the syringe tip and the tip of the syringe cover. The gap functions to isolate the syringe tip from the exterior environment as well as to improve the stream of air, water or air/water mix delivered from the syringe. Preferably the syringe covers include an enlarged generally bell-shaped feature at the end opposite the tip, providing a surrounding cover or sheath for a nut or other fastener typically present at the base end of the metal syringe. This enlarged end surrounds the nut but generally makes little contact with the nut, and in some embodiments provides a handle for gripping the syringe cover to install it over the syringe. The syringe covers of the invention are inexpensive and preferably disposable, but may be sterilizable.
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Cherichetti Cindy A.
Freiburger Thomas M.
Swiatek Robert P.
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