【摘要】 研究了目前应用广泛的四种假肢接受腔及内衬套材料与皮肤的摩擦学特性,试验部位分别选择在小腿截肢残疾患者的残肢及正常人小腿胫骨脊外侧进行。试验前对皮肤和材料的表面形貌、材料亲水性进行了测试。摩擦学试验结果表明,法向载荷P为0.3N和0.7N下,由于硅橡胶具有特殊性质(含有硅油),与皮肤摩擦系数明显大于其他材料,并且在残疾人和正常人皮肤之间具有明显差异(P<0.05);其它三种材料均符合"材料表面越憎水、与皮肤的摩擦系数越低"的规律。法向载荷P为8N下,残疾人和正常人皮肤与各材料之间的摩擦系数无明显差异(P>0.05)。更多还原

【Abstract】 Skin frictional properties of four kinds of prosthetic materials in common use have been researched. Experiments are carried out on residual limb and on normal tibia. Surface roughness and the hydrophobic/hydrophilic of the skin and materials are also tested. Under normal load 0.3 N and 0.7 N, the friction coefficient of silicon rubber and skin has the maximum value among all the materials due to the surface property of silicon rubber (containing oil). There is remarkable difference in friction coefficient between normal skin and amputee skin when they are in contact with silicon rubber (P<0.05). Other materials show "the higher the hydrophobia tendency of surface, the lower the friction coefficient" . There are no significant differences (P>0.05) in friction coefficient between amputee skin and normal skin when they are in contact with all materials under normal load 8 N.更多还原