Microstructure and mechanical properties of hernia mesh
耿钊宁 1殷东明 1毛琳 1宋成利1
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作者信息
1. 上海理工大学健康科学与工程学院，上海 200093
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摘要
目的 分析不同品牌疝补片的微观结构及拉伸、顶破强度进而评估不同疝补片的力学性能。 方法 分别使用天平、显微镜对常见的15种疝补片进行质量和微观结构测试，并分别使用拉伸试验机与顶破试验机来检测疝补片的拉伸性能与顶破性能，并对疝补片进行力学性能分析。 结果 疝补片的编织结构为菱形、多边形和圆形。腹股沟补片的平均质量为0.08 mg/mm2，腹壁疝补片的平均质量为0.18 mg/mm2。G3~G6疝补片的丝径较大，G12的网孔率较低。在拉伸性能测试中，G15的拉伸强度最大，重量型补片中G12、G14的拉伸强度较小，轻量型补片中G1、G2、G7的拉伸强度较小。在顶破性能测试中，G3、G9、G15疝补片的顶破强度最大，重量型补片中G12、G13、G14的顶破强度较小，轻量型补片中G1、G2、G4的顶破强度较小。 结论 多边形网孔且大网孔率的疝补片具有更好的力学性能，为优化疝补片提供了实验依据，有望为相关的研究和应用提供更好的支持。 Objective The microstructure, tensile strength, and bursting strength of different brands of hernia meshes were compared and analyzed through experiments to evaluate the performance of different meshes. Methods The balance and microscope were used to test the weight and microstructure of 15 common meshes and the tensile testing machine and burst testing machine were used to test the tensile and bursting properties of the mesh, and the mechanical properties of the mesh were analyzed. Results The woven structures of the mesh are diamond, polygon and circle. The average weight of inguinal meshes is 0.08 mg/mm2, and the average weight of abdominal wall hernia meshes is 0.18 mg/mm2. The wire diameters of G3 - G6 meshes are larger, while the mesh opening ratio of G12 is lower. In the tensile performance test, it is known that G15 has the highest tensile strength, G12 and G14 have lower tensile strengths in lightweight meshes, and G1, G2, and G7 have lower tensile strengths in lightweight meshes. In the burst performance test, it is known that G3, G9, and G15 have the highest burst strength, while G12, G13, and G14 have the lowest burst strength in lightweight meshes. G1, G2, and G4 have the lowest burst strength in lightweight meshes. Conclusions The mesh with a polygonal mesh and a large mesh opening ratio has better mechanical properties. The results of this study provide experimental evidence for optimizing hernia meshes, which is expected to provide better support for related research and applications.
Abstract
Objective The microstructure, tensile strength, and bursting strength of different brands of hernia meshes were compared and analyzed through experiments to evaluate the performance of different meshes. Methods The balance and microscope were used to test the weight and microstructure of 15 common meshes and the tensile testing machine and burst testing machine were used to test the tensile and bursting properties of the mesh, and the mechanical properties of the mesh were analyzed. Results The woven structures of the mesh are diamond, polygon and circle. The average weight of inguinal meshes is 0.08 mg/mm2, and the average weight of abdominal wall hernia meshes is 0.18 mg/mm2. The wire diameters of G3 - G6 meshes are larger, while the mesh opening ratio of G12 is lower. In the tensile performance test, it is known that G15 has the highest tensile strength, G12 and G14 have lower tensile strengths in lightweight meshes, and G1, G2, and G7 have lower tensile strengths in lightweight meshes. In the burst performance test, it is known that G3, G9, and G15 have the highest burst strength, while G12, G13, and G14 have the lowest burst strength in lightweight meshes. G1, G2, and G4 have the lowest burst strength in lightweight meshes. Conclusions The mesh with a polygonal mesh and a large mesh opening ratio has better mechanical properties. The results of this study provide experimental evidence for optimizing hernia meshes, which is expected to provide better support for related research and applications.
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