This syringe is used in dentistry to inject a local anesthetic. The aspirating syringe differs from most syringes in that it is designed to inject anaesthetic from a carpule.
The parts of an aspirating syringe consist of a threaded tip where the needle attaches, a barrel where the carpule is placed, a piston rod (plunger) with a harpoon attached
that embeds itself into the rubber stopper of the carpule, a finger grip, and a thumb ring.
The harpoon allows the dentist to aspirate (draw back) the injection site to see if the needle tip is located in a blood vessel before injecting the anaesthetic solution.
Once the harpoon is engaged into the rubber stopper of the anaesthetic carpule, the dentist can apply inward or outward pressure on the stopper by exerting pressure on the thumb ring.
Pulling the thumb ring outward also pulls the plunger outward producing an aspirating effect; whereas, pushing inward forces the anaesthetic solution through the needle.
Quality instruments made from Stainless Steel.
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