中文摘要：

在对多种无针注射器的特点进行分类比较的基础上,针对弹簧式无针注射器单次注射剂量和调节机构深度不可控的缺陷,研究提出一种剂量、深度可调的柔性无针注射器。设计弹簧预压力使弹簧存储的势能根据实际情况而调整,并针对不同剂量的药物注射设计了多种类型的安瓿瓶。Fluent软件仿真和模拟实验验证结果表明,该无针注射器能使药物的剂量和深度可调的范围分别达到0.1~1mL和6~20mm。

英文摘要：

Based on the comparison between the features and properties of several kinds of existing needle-free injectors,a flexible needle-free injector which was adjustable in both dose and injecting depth was proposed to overcome the disadvantages of non-adjustable needle-free injectors.The original design was optimized by the application of adjustable pre-pressure spring structure for the purpose of regulating the potential energy stored by the spring in according with the actual application situation.A serial of ampoules were also designed to match different doses.Simulation experiments and analysis conducted on Fluent verify that this new needle-free injector is adjustable in a dose range of 0.1~1mL and a depth range of 6~20mm.