Department of Surgery, Royal Cornwall Hospital, Truro, TR1 3LJ, UK.
World J Surg. 2013 Apr;37(4):737-45. doi: 10.1007/s00268-012-1900-x.
The use of sterilized mosquito net as a cheaper alternative to commercial mesh used in hernia repair has previously been published. However, as no standards with regard to the material have been documented, we aimed to define the characteristics of a commonly available and low-cost mosquito net, which has already been shown to be clinically efficacious in groin hernia repair. We compared its characteristics to other commercially available meshes, in keeping with the well-established FDA and MHRA regulatory processes.
The macromolecular structure of the mosquito net was determined by vibrational spectroscopy. The ultrastructure of the meshes was examined with scanning electron microscopy, and uniaxial and burst tensile strength testing was performed. The following parameters were assessed: polymer type, filament characteristics, pore size, weight, linear density, elasticity, and tensile strength.
The mosquito net was a polyethylene homopolymer, knitted from monofilament fibers with a mean filament diameter of 109.7 μm and a mean mesh thickness of 480 μm. The mean pore maximum diameter was 1.9 mm, with 91.2 % porosity, 53.7 g/m(2) mean mesh weight, and a linear mass density of 152 denier. This was comparable to the "large pore" (class I) commercial meshes. The bursting force for polyethylene mosquito net was greater than for UltraPro and Vypro (43.0 vs. 35.5 and 27.2 N/cm, respectively), and the mosquito net exhibited less anisotropy compared to the commercial meshes.
The material and mechanical properties of the polyethylene mosquito net are substantially equivalent to those of commonly used lightweight commercial meshes.
此前已有研究报道，使用消毒蚊帐作为疝修补术中商业网片的廉价替代品。然而，由于没有关于这种材料的标准文件，我们旨在定义一种常见且低成本的蚊帐的特性，这种蚊帐在腹股沟疝修补术中已被证明具有临床疗效。我们将其特性与其他市售网片进行了比较，符合美国食品和药物管理局（FDA）和英国药品和保健产品管理局（MHRA）的既定监管程序。
通过振动光谱法确定蚊帐的高分子结构。使用扫描电子显微镜检查网片的超微结构，并进行单轴和爆破拉伸强度测试。评估了以下参数：聚合物类型、长丝特性、孔径、重量、线密度、弹性和拉伸强度。
蚊帐是一种聚乙烯均聚物，由单丝纤维编织而成，平均单丝直径为 109.7 μm，平均网孔厚度为 480 μm。最大孔径平均值为 1.9mm，孔隙率为 91.2%，平均网孔重量为 53.7g/m²，线密度为 152 旦尼尔。这与“大孔径”（I 类）商业网片相当。聚乙烯蚊帐的爆破力大于 UltraPro 和 Vypro（分别为 43.0、35.5 和 27.2 N/cm），并且与商业网片相比，该蚊帐的各向异性较小。
聚乙烯蚊帐的材料和机械性能与常用的轻质商业网片基本相当。
