Patent ID: 9345833
Filing Date: 2016-05-24
CPC Classification: A61M

Claim Text:
1. A dental instrument, comprising: a topical anesthetic dispenser, including: a cylindrical dispenser plunger including a first end having a first digit ring, and a second end opposite the first end; a cylindrical dispenser barrel, the second end of the cylindrical dispenser plunger being slidably disposed in the cylindrical dispenser barrel, the cylindrical barrel being dimensioned and configured for receiving a first carpule containing topical anesthetic; an elongate dispenser tube having a rear end adapted for penetrating the first carpule and a front end defining a spray nozzle, the cylindrical dispenser plunger being slidable in the cylindrical dispenser barrel to eject a spray of topical anesthetic from the first carpule onto an injection site to topically anesthetize injection site surface tissues prior to injection; wherein the cylindrical dispenser plunger is selectively moved within the cylindrical dispenser barrel by manipulation of the first digit ring at the first end of the cylindrical dispenser plunger, causing the engagement of the first carpule to fluidly move the topical anesthetic from the carpule through the spray nozzle onto the injection site surface tissues; and a needle cover affixed to the dispenser tube, the needle cover having an open end; and a cylindrical syringe, the cylindrical syringe including: a cylindrical syringe plunger having a syringe shaft, a first end including a second digit ring, and a second end opposite the first end; a cylindrical syringe barrel, the second end of the cylindrical syringe plunger being slidably disposed in the cylindrical syringe barrel, the cylindrical syringe barrel being dimensioned and configured for receiving a second carpule containing an injectable anesthetic; and an elongate hollow needle extending from the cylindrical syringe barrel, the needle having a rear end adapted for penetrating the second carpule and a pointed front end defining an injection opening, the cylindrical dispenser barrel being slidably mounted on the cylindrical syringe with the needle cover shrouded over the needle to prevent accidental needle sucks, the second end of the cylindrical syringe plunger being selectively slidable in the cylindrical syringe barrel by manipulation of the second digit ring moving the needle out of the open end of the needle cover into and beneath the injection site surface tissues that have been topically anesthetized, and injecting anesthetic from the second carpule thereunder.