People in the childhood if the first contact with the injection, will be the tip of the needle into the flesh when the pain to cry, so they are the most unpopular "welcome" modern medical tools. However, if there is no full glass syringe, there will be no intravenous infusion, many people will be killed. Do not underestimate this little syringe, in fact it also has a long history.

The syringe consists of a syringe with a small hole at the front end and a matching piston stem. The syringe is used to inject small amounts of liquid into areas that are not accessible to other methods or from those places. When the mandrel is pulled out, the liquid or gas is sucked from the tip of the barrel, and the liquid or gas is extruded when the mandrel is pushed in. The process of extracting or injecting gas or liquid with a syringe and needle is called injection.

As early as before the invention of the syringe, doctors have been treated infusion therapy, but because of the use of natural tools, so that patients had an infection. It is generally believed that the originator of syringes for medical use was Scottish physician Alexander Wood and Charles Prames in France, who worked together in 1853 to achieve this process. Alexander uses this new tool to subcutaneously inject morphine into the patient to treat sleep disorders. Unfortunately, however, Alexander's wife died because of herself injecting morphine overdose. Subsequently, Alexander has improved the syringe: the needle with the scale, the needle is more fine. This series of improvements also attracted the attention of many doctors, and the syringe has been widely used.

It was also argued that surgeons in Iraq and Egypt had developed a similar syringe for the removal of cataracts in the eyes of patients with a hollow glass tube in the 9th century AD, which was still used at least in 1230 Century this method has been improved.

The syringe can be made of plastic or glass, and the glass syringe can be sterilized by an autoclave. In 1956, New Zealand doctor Colin Murdoch invented a disposable plastic syringe, it not only adhering to the traditional glass syringe transparent, inert advantages, but also easy to damage, easy to transport, low cost, easy to recover and other characteristics, safety is Glass syringes are far behind, and it greatly reduces the risk of blood-borne diseases. Since then the new syringe began to scale production, and gradually become the first choice for doctors.

With the development of medical technology, needleless syringes also came into being, this syringe without needles, but with a high-speed high-pressure injector drugs through the skin into the body. This way can significantly reduce the number of doctors and nurses who use the needle syringe when accidentally tying themselves to an accident. In addition, also help some patients to avoid regular injections of insulin and other drugs caused by discomfort, needleless device so that these patients are pleased to accept drug injection. At the same time, the distribution of drug-free drugs in the organization is more dispersed, is conducive to the absorption of drugs, liquid absorption more complete, the drug bioavailability can be improved.