Syringe

Syringe
A typical plastic medical syringe fitted with a detachable stainless steel needle; the syringe is fitted with a male Luer lock fitting which the needle, which is equipped with a female Luer-Lock fitting (purple), screws into
Classification	Medical device
Industry	Healthcare
Application	Injection
Inventor	Charles Pravaz (screw) Alexander Wood (plunger)
Invented	1853 (171 years ago) (1853)

A syringe is a simple reciprocating pump consisting of a plunger (though in modern syringes, it is actually a piston) that fits tightly within a cylindrical tube called a barrel. The plunger can be linearly pulled and pushed along the inside of the tube, allowing the syringe to take in and expel liquid or gas through a discharge orifice at the front (open) end of the tube. The open end of the syringe may be fitted with a hypodermic needle, a nozzle or tubing to direct the flow into and out of the barrel. Syringes are frequently used in clinical medicine to administer injections, infuse intravenous therapy into the bloodstream, apply compounds such as glue or lubricant, and draw/measure liquids. There are also prefilled syringes (disposable syringes marketed with liquid inside).

The word "syringe" is derived from the Greek σῦριγξ (syrinx, meaning "Pan flute", "tube").