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《China Mechanical Engineering》 2018-07
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Design of Needle Free Injectors Driven by Electromagnetism and Their Mechanics and Motion Simulations

CHEN Tianyu;WANG Mingdi;CHEN Jie;School of Mechanical and Electric Engineering,Soochow University;School of Mechanical and Electric Engineering,Suzhou Vocational University;  
For heavy,unsustainable uses and other shortcomings of the widely used mechanical and pneumatic needle-free injectors,a needle-free injection was proposed by using an electromagnetic drive DC power supply devices;the electromagnetic needle-free injection systems were divided into electromagnetic portions and the fluid portions,and mathematical models were established to derive the corresponding formulas and numerical calculations.The electromagnetic forces and the fluid parts of the simulation analysis,the graph of the current,the relative position of the core and electromagnetic forces,and the diagram of ampoules thrust rod ejection outlet pressure and fluid velocity were obtained.The results show that:the needle free injector have enough power to meet the design requirements,ampoule injection pressure and speed of the jet meet the requirements of entering human skin surfaces.
【Fund】: 江苏省自然科学基金资助项目(BK20151194)
【CateGory Index】: TH789
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