According to foreign media reports, biopharmaceuticals derived from living organisms have broad application prospects, especially because they can carry out personalized treatment according to the unique needs of individual patients. However, they are usually difficult to inject through the skin, which is the design site of a new hypodermic needle. Because biological agents are usually highly concentrated, they tend to be so viscous – sometimes unable to pass through a standard syringe. Instead, they are usually diluted and then injected intravenously for a period of time before they enter the body. < / P > < p > instead, scientists at MIT have developed a prototype hypodermic needle that contains two barrels – one inside the other. The inner barrel contains viscous medicine and the outer barrel contains biocompatible lubricating fluid. Both barrels are activated simultaneously and pressed into a plunger. < / P > < p > when the drug flows out of the inner barrel, it is coated with a thin layer of lubricant. This makes it easy for both fluids to pass through the needle. In laboratory tests, even the thickest drugs require only one seventh of the injection power. Another benefit of this injection is that the biological agent is hardly damaged by shear stress when it passes through the needle. This means that the technology can also find applications in 3D bioprinting, which can be used to squeeze fragile cells and biological tissues. Vishnu jayaprakash, one of the participants in the study, pointed out: “since this approach is simple, there is no reason why it can’t help solve an emerging problem we hear from industry. The basic work has been completed. Now it’s just about applying it to different recipes. ” Global Tech