仿生注射器针头减阻试验研究

根据蚊子等昆虫刺吸式口器的结构形态，采用激光雕刻与辊压成型等表面加工技术对普通注射器针头进行了仿生非光滑表面结构形态的加工。运用试验优化技术，找出了针头表面几何非光滑结构单元形态、结构单元深度、间距及直径（宽度）对注射时针头壁与皮肤间摩擦阻力的影响规律，分析了影响因素的主次和最优水平。结果表明，合理的仿生结构单元形态和分布可使仿生注射器针头减阻率达44．5％。该研究成果为仿生无痛注射器研究及其实际应用提供了理论基础。

Experimental research on drag reduction of bionic injector needles

Mimicking the structure of the needling mouthpart of the insect, such as the mosquito, the common injector needle was processed into that with the bionic non-smooth surface by the laser engraving and roll forming technologies. Using the method of orthogonal design of experiment,the influences of the configuration of the needle surface non-smooth structure unit, its interval, depth, and diameter or width on the drag on the injector needle against the human skin were investigated,and the influence order of factors and their optimal levels were determined. The results show that the appropriate non-smooth unit configuration and their distribution can reduce the drag on the needle against the skin by up to 44.5 %. This study provides a basis for the development of the bionic painless injectors.