不同品牌填充注射用钝针的显微结构及血管穿刺性能比较

Microstructure and function of Pix＇L and other blunt-tip mixrocannulas for filler injection

目的 探讨不同品牌填充注射用钝针的显微结构及血管穿刺性能.方法 对临床常用不同品牌的钝针,如Pix＆#39;L cannula（瑞士）,Micro cannula（中国）,Micro cannula（韩国）,Injection cannula（法国）及普通锐针BD HypointTM（新加坡）进行扫描电镜和电子能谱检测,特别是观测其针头开口处的显微形貌和元素组成差异,推测其原材料选择及加工工艺的差异,并使用推力计检测不同针头刺破大鼠主动脉升支所用的推力值,最后对钝针的血管穿刺力与针头显微结构的关系进行分析.结果 不同品牌的钝针针头及开口处的显微形貌存在明显差异,反映了加工工艺的差别.不同钝针刺破血管能力差异明显,钝针刺破血管能力与针尖的截面积和圆润情况有关.结论 不同品牌钝针的显微形貌存在明显差异,其血管刺破力与之相关,反映出品质的差异.钝针的生产加工工艺决定了其使用性能,整形医师在使用时当审慎选择.

Objective To discuss the microstructure and properties of vascular puncture with a blunt needle Pix＆#39;L filling injection.Methods Scanning electron microscopy （SEM） and photoelectron spectroscopy were employed for the analysis of the different morphology and elements,and a rat model was established to study thrusts of different microcannulas and hypodermic needle when stabing vessels.Ultimately we analyzed the correlation between the morphology and puncture force of different microcannulas.Results The SEM images of microcannulas from different manufacturers were different,and revealed the different technics of different manufacturers.Puncture forces of different microcannulas corresponded to the cross-section and smooth degree of the tips.Conclusions The SEM morphology and puncture force of microcannulas from different manufacturers are different,which indicate the different characters and usability.Plastic surgeons should select to use them more judiciously.