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Syringe related introduction
Nov 19, 2018

The emergence of needle-free syringes is an epoch-making revolution in the field of medical appliances. The emergence of syringes is an epoch-making revolution in the field of medical appliances and the process of needle extraction or infusion of gas or liquid is called injection. The syringe consists of a syringe with a small hole at the front end and a matching piston rod for injecting a small amount of liquid into the area that is inaccessible to other methods or from those places. The liquid is pulled out when the core rod is pulled out. Or the gas is drawn in from the small hole at the front end of the barrel, and the liquid or gas is squeezed out when the core rod is pushed in.

Generally use 2 ml, 5 ml, 10 ml or 20 ml syringes, occasionally 50 ml or 100 ml, and intradermal injection with 1 ml syringe.

The syringe barrel can be either plastic or glass and typically has a scale indication of the volume of liquid in the syringe. Glass syringes can be sterilized with autoclaves, but because modern syringes are less expensive to process, modern medical syringes are mostly made of plastic, which further reduces the risk of blood-borne diseases. The spread of disease among drug users who are intravenously drug-injected, especially the spread of HIV and hepatitis, is associated with repeated use of needles and syringes.

The syringe is a common medical device. As early as the 15th century, Italian Katinel proposed the principle of the syringe. Mainly used for injecting liquid medicine or pumping liquid. Syringes can also be used to inject medical equipment, containers, scientific instruments such as some chromatography through rubber diaphragms. Injecting gas into a blood vessel will result in air embolism. The way to remove air from the syringe to avoid embolization is to invert the syringe, tap it lightly, and then squeeze a little liquid before injecting it into the bloodstream.

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