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首页> 外文期刊>Fibers and Polymers >Technical Knitting and Ergonomical Design of 3D Seamless Compression Hosiery and Pressure Performances in Vivo and in Vitro
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Technical Knitting and Ergonomical Design of 3D Seamless Compression Hosiery and Pressure Performances in Vivo and in Vitro

机译：体内和体外3D无缝压缩袜和压力性能的技术编织和人体工程学设计

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摘要

The present study was conducted from a new and innovative view to analyze pressure performances of elastic compression hosieries (ECHs) based on a technical knitting and ergonomic design and development methodology. ECHs with pressure classes I and II have been designed and developed. Multiple influencing factors and their dynamic interaction involved in the working mechanisms of ECHs were analyzed and discussed in this study. Yam properties, material combinations, knitting structural complex, and parameters setting of machinery elements determine the fabric elasticity, stiffness, hosiery configuration, pressure magnitudes and gradient distribution. A good agreement and significant correlation on pressure performances of the developed hosieries are present from positions B1 to D when being tested on the wooden leg model by using Medical stocking tester in vitro and on the studied subjects' legs in vivo. A reasonable pressure gradient was presented on the leg model (i.e. 70-100 % pressure at B1 and 50-80 % at C compared with the pressure exerted at ankle B), which supported the technical knitting design methodology applied in this study. However, some differences at ankle region B existed between the in vivo and in vitro values due to differences of anatomic structures that existed on the tested ankle areas. The location of testing points and body postures being undertaken by the wearers also significantly influenced the pressure profiles in vivo. More stretch deformations in hosiery fabric are produced, as assessed by static stiffness index evaluation, at the ankle when the body posture changes from standing to supine. The developed ECHs with pressure classes I and II received positive feedback on pressure and comfort perceptions on testing spot. More explorations are needed to elevate the consistency of the in vitro and in vivo pressure values at ankle region and to investigate their long-term pressure performances in practical wear through innovative knitting technical design with considerations of ergonomic factors and conducting larger scale of wear trials in future studies.
机译：本研究从一种新颖的观点出发，基于技术针织和人体工程学设计与开发方法，来分析弹性压缩袜（ECH）的压力性能。已经设计和开发了压力等级为I和II的ECH。本研究分析和讨论了影响ECHs工作机制的多种影响因素及其动态相互作用。纱线的性能，材料组合，针织结构的复杂性以及机械元件的参数设置决定了织物的弹性，刚度，针织物配置，压力大小和梯度分布。在体外使用Medical stocking tester在木腿模型上进行测试以及在体内对被研究对象的腿进行测试时，从位置B1到D，已开发的袜类的压力性能之间存在良好的一致性，并且存在显着相关性。在腿部模型上提出了一个合理的压力梯度（即，在B1处为70-100％的压力，在C处为50-80％的压力，而脚踝B施加的压力），这支持了本研究中采用的技术针织设计方法。然而，由于存在于被测试的脚踝区域上的解剖结构的差异，在体内和体外的值之间在脚踝区域B存在一些差异。佩戴者进行的测试点的位置和身体姿势也显着影响了体内的压力分布。当人体姿势从站立变为仰卧时，脚踝处的静态刚度指数评估表明，袜类织物会产生更多的拉伸变形。压力等级为I和II的已开发ECH在测试点获得了关于压力和舒适感的积极反馈。需要进行更多探索，以提高脚踝区域的体外和体内压力值的一致性，并通过考虑人体工程学因素的创新针织技术设计并进行更大范围的磨损试验，研究其在实际穿着中的长期压力性能。未来的研究。

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