Tomita N, Tamai S, Morihara T, Ikeuchi K, Ikada Y
Department of Orthopedic Surgery, Nara Medical University, Japan.
J Appl Biomater. 1993 Spring;4(1):61-5. doi: 10.1002/jab.770040108.
To establish criteria for characterizing synthetic sutures, the handling characteristics of silk suture were analyzed. The characteristics that distinguish silk suture from other braided suture materials are its good "knot security" and relatively low "tiedown resistance." Analytic consideration of knot security suggests that not only superficial friction but also resistance force produced by cross-sectional deformity of braided threads plays an important role in silk's superior performance. Results of a "pullout friction test," developed to quantitatively evaluate resistance produced by surface friction and cross-sectional deformity suggest that the superiority of silk thread can be explained in terms of high static withdrawal resistance under low loads and relatively low dynamic withdrawal resistance under high loads.
为了建立合成缝线的特性标准，对丝线的操作特性进行了分析。丝线与其他编织缝线材料的区别在于其良好的“结安全性”和相对较低的“系紧阻力”。对结安全性的分析表明，不仅表面摩擦力，而且编织线横截面变形产生的阻力在丝线的优越性能中都起着重要作用。为定量评估表面摩擦力和横截面变形产生的阻力而开发的“拔出摩擦试验”结果表明，丝线的优越性可以通过低负荷下的高静态拔出阻力和高负荷下相对较低的动态拔出阻力来解释。
