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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Analysis of the fracture morphology of polyamide, polyester, polypropylene, and silk sutures before and after implantation in vivo.
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Analysis of the fracture morphology of polyamide, polyester, polypropylene, and silk sutures before and after implantation in vivo.

机译：体内植入前后聚酰胺，聚酯，聚丙烯和丝绸缝合线的断裂形态分析。

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摘要

This study has analyzed fracture morphology of four nonabsorbable commercially available sutures before and after implantation in rats. Also, tensile and knot strength retention have been evaluated after 3 and 8 weeks in vivo. Scanning electron and optical light microscopes were used for analysis of fracture morphologies and surface changes of the sutures. A clear effect of in vivo on the tensile and knot strength changes, and the fracture mechanism was seen for braided sutures. The suture size was also important for braided sutures, as fibrous tissue formation plays an important role in terms of the size. The fiber's surface properties were also important for the fracture morphology. A smooth and even surface was not suitable for the fibrous tissue formation as seen in monofilament sutures. Therefore, the polymer type was very important for the monofilament sutures, as it was the most important parameter to determine the fracture morphology and was not affected by the implantation and the implantation time. The size of the suture was also important for the polypropylene in terms of axial splitting before and after implantation. This, however, was not the case for knot strength tests. The knot was undone regardless of the size. Surface characteristics were very important for braided sutures, as they have a rough surface that supports tissue formation on the fracture mechanism, tensile and knot strength. Silk suture has single filaments with no regular diameter and smooth surface. Therefore, silk suture has more tissue formation postimplantation compared to polyester suture.
机译：这项研究分析了大鼠植入前后四种不可吸收的商用缝线的骨折形态。同样，已经在体内3和8周后评估了抗张强度和结强度保持率。扫描电子显微镜和光学显微镜用于分析缝线的断裂形态和表面变化。体内对拉伸强度和结强度变化的明显影响，以及编织缝线的断裂机理。缝线尺寸对于编织缝线也很重要，因为纤维组织的形成在尺寸方面起着重要的作用。纤维的表面性质对于断裂形态也很重要。如单丝缝合线所示，光滑且均匀的表面不适合纤维组织的形成。因此，聚合物类型对于单丝缝合线非常重要，因为它是确定骨折形态的最重要参数，不受植入和植入时间的影响。就植入前后的轴向劈裂而言，缝线的尺寸对于聚丙烯也很重要。但是，结强度测试并非如此。不管大小，结都没有做。表面特性对于编织缝线非常重要，因为它们具有粗糙的表面，可以支撑组织的断裂机理，抗张强度和打结强度。丝线缝合的单丝没有规则的直径，表面光滑。因此，与聚酯缝合线相比，丝绸缝合线在植入后具有更多的组织形成。

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