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一種新型仿生骨小梁的摩擦系數(shù)
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作者單位:

1.北京市春立正達醫(yī)療器械股份有限公司，北京 101100;2.有研醫(yī)療器械(北京)有限公司，北京 102200

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基金項目:

中國博士后科學(xué)基金


Friction Coefficient of a Novel Bionic Trabecular Bone
Author:
Affiliation:

1.Beijing Chunlizhengda Medical Instruments Co., Ltd, Beijing 101100, China;2.GRIMED Medical (Beijing) Co., Ltd, Beijing 102200, China

Fund Project:

National Natural Science Foundation of China (51401027); China Postdoctoral Science Foundation (2016M591040)

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    摘要:

    研究了一種新型仿生骨小梁結(jié)構(gòu)的植入物的摩擦系數(shù)，該新型骨小梁結(jié)構(gòu)采用Ti-6Al-4V合金粉末進行3D打印制備。從牛骨中取皮質(zhì)骨和松質(zhì)骨作為摩擦配副。從2種結(jié)構(gòu)的起始接觸角測試結(jié)果可知，仿生結(jié)構(gòu)的接觸角（87.7°）要比均勻骨小梁結(jié)構(gòu)的接觸角（96.9°）小一些，說明其表面潤濕性相對較好。對于均勻骨小梁結(jié)構(gòu)而言，其平均摩擦系數(shù)在0.71~0.82之間，明顯低于仿生骨小梁結(jié)構(gòu)的摩擦系數(shù)（0.82~0.99）。均勻骨小梁結(jié)構(gòu)的最大靜摩擦系數(shù)為0.99~1.26，而仿生骨小梁結(jié)構(gòu)的最大靜摩擦系數(shù)為1.52~1.96。仿生骨小梁的最大靜摩擦系數(shù)1.96是在加載為10 N，摩擦配副為皮質(zhì)骨時獲得的。結(jié)果表明，新型仿生骨小梁結(jié)構(gòu)的摩擦系數(shù)明顯高于均勻骨小梁結(jié)構(gòu)。因此，新型仿生骨小梁結(jié)構(gòu)可以在骨-種植體界面提供足夠的摩擦力，從而實現(xiàn)植入物初步穩(wěn)定性。

    Abstract:

    The coefficient of friction (COF) of a novel bionic trabecular structure that was manufactured through 3D printing with Ti-6Al-4V power was investigated. Cortical and spongy bones were used as counterparts. The contact angle results show that the bionic structure has better surface wettability than the homogeneous structure at the early-stage. However, the two structures have highly hydrophilic surface. For homogeneous trabeculae, the average values of COF range from 0.71 to 0.82, which are significantly lower than the values of 0.82~0.99 for the bionic trabeculae. The static COF values range from 1.52 to 1.96 for the bionic trabeculae and 0.99 to 1.26 for the homogeneous trabeculae. The maximum static COF value of 1.96 is acquired at 10 N for the cortical bone against the bionic trabeculae. The results indicate that the bionic trabecular structure has a higher COF than the homogeneous trabeculae and other components. Hence, the novel bionic trabecular structure can provide sufficient friction at the bone-implant interface, thus achieving primary stability.

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許奎雪,劉偉,程曦,潘超,王振國,袁志山,王呂武.一種新型仿生骨小梁的摩擦系數(shù)[J].稀有金屬材料與工程,2021,50(8):2777~2782.[Xu Kuixue, Liu Wei, Cheng Xi, Pan Chao, Wang Zhenguo, Yuan Zhishan, Wang Lvwu. Friction Coefficient of a Novel Bionic Trabecular Bone[J]. Rare Metal Materials and Engineering,2021,50(8):2777~2782.]
DOI：10.12442/j. issn.1002-185X.20200476

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  • 收稿日期:2020-07-04
  • 最后修改日期:2021-07-27
  • 錄用日期:2020-09-18
  • 在線發(fā)布日期: 2021-09-07
  • 出版日期: 2021-08-31