ANESTHESIA APPLICATORS/INJECTORS FOR DENTAL AND OTHER APPLICATIONS AND METHODS OF USE

摘要

Disclosed are applicators and methods injecting of a liquid anesthetic into a dental patient with no or minimal pain. In accordance with one embodiment the applicator is for intraligamentary injection and includes an elongated, thin member having an open distal free formed of a resilient and somewhat conformable material suitable for producing a substantially fluid-tight interface with the anatomic structures at the gingival sulcus to inject the anesthetic therein. In another embodiment the applicator includes a flexible skirt surrounding a sharpened cannula, with the cannula being movable with respect to the skirt. The skirt is arranged to receive the anesthetic to anesthetize the gum, whereupon the cannula can then pierce the gum to inject the anesthetic into the underlying anatomic structure.

主权项

1. An applicator for effecting an intraligamentary injection of a liquid anesthetic into the gingival sulcus of a dental patient, said applicator comprising a body member having an elongated tip, said tip being a generally planar, thin member having an atraumatic free end and a passageway extending therethrough and terminating at said free end of said tip, said applicator being arranged to be secured to a source of liquid anesthetic, whereupon the liquid anesthetic may be selectively introduced into said applicator, said free end of said elongated tip being arranged for producing a substantially fluid-tight interface with the anatomic structures at the gingival sulcus, whereupon the liquid anesthetic may be forced from said applicator through said passageway out of said open free end of said tip to enter into the gingival sulcus so that it is directed downward along the root of the tooth and is prevented from flowing upward and outward.