The reasons why "butt injections" are becoming less common include obvious pain associated with butt injections, complications associated with butt injections, privacy concerns, financial considerations, and advances in medications.
1. Buttock injections are often accompanied by significant pain
Early injection equipment had thicker needles that were easily worn out after repeated use, resulting in a very uncomfortable and painful injection process. In addition, the buttocks contain more fatty tissue, and in order to inject the vaccine into the muscle tissue, the needle usually needs to be inserted 2 to 3 centimeters deeper into the buttock skin. In contrast, injections in the arms and legs are less invasive, and buttock injections result in greater and longer-lasting pain.
2. Buttock injections are prone to complications
The buttock area contains a large number of sciatic nerves, which pose a greater risk when injected.
3, the privacy of the injection
In mass inoculation campaigns such as vaccinations, the place of inoculation is usually a public **** place, and this kind of occasion is not suitable for buttock injections. In addition, the psychological feelings of the vaccinators need to be considered.
4, the consideration of economic interests
Entering the 90's, the primary health care institutions and individual health clinics revenue mainly from intravenous infusion. The price of intravenous infusion has greater elasticity, while the ass needle injection of a single type of drugs, transparent and cheaper prices, can not bring considerable profits.
5, the progress of drugs
Also one of the reasons why the butt needle is gradually eliminated. With the introduction of various new drugs, many of the drugs that used to have to be injected intramuscularly have been eliminated. Some medications have also become better absorbed, such as convenient oral formulations.
Invention and use of the syringe:
As early as the 15th century, the Italian Catinel proposed the principle of the syringe. But it was not until 1657 that the Englishmen Boyle and Raine conducted the first human trials. Abel, a surgeon in the army of King Louis XVI of France, also envisioned a piston syringe. But it is generally recognized that Plavoz of France was the inventor of the syringe. The syringe he supervised in 1853 was made of silver, had a capacity of only 1 milliliter, and had a threaded piston rod.
Ferguson, an Englishman, was the first to use glass syringes. The transparency of glass was good, so you could see the injected drug. Since then there are glass tube metal and made of syringes, can be sterilized by boiling, the needle can also be sharpened and reused and sterilized. Syringes made of plastic, used once that is thrown away, greatly reducing the risk of infection during injection. In order to ensure hygiene and prevent cross-infection, contemporary syringes are mostly made of plastic.