Where did the thinnest needle come from?

"Nihon Keizai Shimbun" recently reported that many people are afraid of pain when taking injections. Termao, Japan's largest medical device manufacturer, recently developed the world's finest injection needle, which can solve this problem.

The diameter of this needle is only 0.2 mm, and the wound that penetrates the skin is very small, and there is almost no pain. The researchers also used the conical machining method to deform the needle, which successfully solved the problem of poor liquid flow caused by the thinning of the needle.

It is said that there are 7 million diabetics in Japan, and some seriously ill patients need insulin injections five times a day. Painless injection is timely help for them. Telmao plans to introduce this new product to diabetic patients who inject insulin by themselves within one or two years.

At present, Japanese patients mostly use needles made in the United States. Telmao's new products can not only recapture the domestic market, but also occupy a place in the world market. People concerned believe that it can bring at least 70 billion yen in economic benefits.

According to medical history books, the original form of syringe was enema. Zhang Zhongjing, a Chinese physician in the Han Dynasty, wrote in his Treatise on Febrile Diseases (written in AD 2 19) and The Complete Book of Yangming: "The disease of Yangming is caused by spontaneous sweating. If you sweat and urinate for personal gain, it is exhaustion of body fluid. Although it is difficult to attack, you still need to fry honey to guide you when you want to defecate. If the roots of sweet potatoes and the bile of big pigs can be used as guides. " In the book "Pig Bile Prescription", it is clearly pointed out: "A large piece of pig bile, a little diarrhea juice and mature vinegar are very effective for filling Gu Dao (anus), such as eating for a while, acting as stool, and eating evil things at night." How to "fill Gu Dao"? He wrote: "It takes a small bamboo tube ... to get into the valley." This small bamboo tube is the prototype of enema syringe.

/kloc-in the 0/5th century, Europe entered the Renaissance. With the development of medicine, medical scientists conducted autopsies in order to deeply study human tissues. In order to solve the problem of embalming corpses, the famous Italian anatomist Ostadis and others successively injected preservatives into the blood vessels of corpses through "syringes". At 185 1, the French doctor Pravitz made a metal syringe. At the same time, Irish doctor Linde also injected painkillers into patients with his own metal syringe. 1896, German scientist Ruhr made the first glass syringe, which was widely used in clinic.