Tensile strength test of argentation medical polypropylene mesh and its antibacterial activity detection    ZOU Zhong-hui* ,ZHAO Yu,SUN Yi-lai, et al. * Department of General Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
Corresponding author：ZHAO Yu, E-mail：zhaoyu@cta.cq.cn
Abstract    Objective    To test the tensile strength nature of argentation medical polypropylene mesh (PP) and detect its antibacterial activity in vivo. Methods    Tensile strength nature was tested in both argentation PP group and non-argentation group (control group) with mechanical testing machine INSTRON 1011 between June 2008 and December 2008 in Chongqing Medical University. PPs of argentation PP group(n = 24) and control group(n = 24) were implanted in abdominal walls of the same rabbits in vivo.  Results    After chemical argentation implanting tests, tensile strength nature of PP mesh had no significant difference (P>0.05). In general point of view, histology or bacterial counts, there were significant differences between silver-plated group and control group. Conclusion    The tensile strength nature of PP mesh remains unchanged. Argentation medical PP mesh in vivo of animal tests has a good anti-bacterial nature.