Biosurface and Biotribology最新文献_第8页

Flexible, high-strength titanium nanowire for scaffold biomimetic periodontal membrane 柔性、高强度钛纳米线用于仿生牙周膜支架

Biosurface and Biotribology Pub Date : 2021-05-30 DOI: 10.1049/bsb2.12010

Jin Li, Licheng Hua, Weiyuan Wang, Chenjie Gu, Jianke Du, Conghu Hu

引用次数: 0

Highly cross-linked polyethylene is the new ‘gold standard’ bearing material for total hip arthroplasty 高交联聚乙烯是全髋关节置换术的新“金标准”承载材料

Biosurface and Biotribology Pub Date : 2021-05-28 DOI: 10.1049/bsb2.12007

John B. Medley

引用次数: 1

Raman analysis of chemisorbed tribofilm for metal-on-polyethylene hip joint prostheses 金属-聚乙烯髋关节假体化学吸附摩擦膜的拉曼光谱分析

Biosurface and Biotribology Pub Date : 2021-05-25 DOI: 10.1049/bsb2.12008

Risha Rufaqua, Martin Vrbka, Dušan Hemzal, Dipankar Choudhury, David Rebenda, Ivan Křupka, Martin Hartl

引用次数: 1

Effects of UHMWPE viscoelasticity on the squeeze-film lubrication of hip replacements 超高分子量聚乙烯粘弹性对髋关节置换术挤压膜润滑的影响

Biosurface and Biotribology Pub Date : 2021-05-25 DOI: 10.1049/bsb2.12006

Xianjiu Lu, Qingen Meng, Zhongmin Jin

{"title":"Effects of UHMWPE viscoelasticity on the squeeze-film lubrication of hip replacements","authors":"Xianjiu Lu, Qingen Meng, Zhongmin Jin","doi":"10.1049/bsb2.12006","DOIUrl":"10.1049/bsb2.12006","url":null,"abstract":"<p>Many studies have been performed to analyse the lubrication of artificial joints since the pioneer work by the late Professor Duncan Dowson. However, the viscoelastic deformation of one of the most widely used bearing materials, ultra-high-molecular-weight polyethylene (UHMWPE), has only been considered recently. The described study attempted to investigate the effect of UHMWPE viscoelasticity on the elastohydrodynamic lubrication of such a soft artificial hip replacement under squeeze-film motion. A transient viscoelastic squeeze-film lubrication model of a typical hip implant was developed and solved to obtain the film thickness and pressure distributions. A boundary film thickness was adopted to consider the direct and indirect lubricant contact conditions. The results showed that the viscoelasticity had marked effects on the squeeze-film lubrication performance of UHMWPE artificial hip joints. The minimum film thickness in the viscoelastic model was smaller than that of the elastic model, causing an earlier direct contact. However, the film thickness within the central contact region in the viscoelastic model was greater than that of the elastic model due to the restricted flow of the lubricant, therefore enhancing the lubricating effect and particularly with a short relaxation time and mechanical loss factor.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47250186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Copper-mediated polyurethane materials with enzyme-like catalysis for biocompatibility improvement in blood environments 铜介导的类酶催化聚氨酯材料在血液环境中的生物相容性改善

Biosurface and Biotribology Pub Date : 2021-05-24 DOI: 10.1049/bsb2.12009

Jiaxin Dou, Peichuang Li, Yuancong Zhao, Lei Zhou, Xin Li, Jin Wang, Nan Huang

{"title":"Copper-mediated polyurethane materials with enzyme-like catalysis for biocompatibility improvement in blood environments","authors":"Jiaxin Dou, Peichuang Li, Yuancong Zhao, Lei Zhou, Xin Li, Jin Wang, Nan Huang","doi":"10.1049/bsb2.12009","DOIUrl":"10.1049/bsb2.12009","url":null,"abstract":"<p>Because of their good performance, including biocompatibility and mechanical properties, polyurethanes (PUs) are widely used in medical devices. However, undesired compatibility troubles, including thrombus, inflammation, and hyperplasia, still limit the applications of PUs. In this study, copper-mediated polyurethane (PU-Cu) materials with enzyme-like catalysis were prepared. The PU-Cu materials effectively catalysed the nitric oxide (NO) released from endogenous NO donors because of the glutathione peroxidase (GPx)-like function of copper ion. The PU-Cu materials were respectively evaluated via platelet adhesion and endothelial cell (EC), smooth muscle cell (SMC), and macrophage (MA) cultures. Scanning electron microscopy results showed that PU-Cu materials significantly inhibited platelet adhesion and activation. Meanwhile, PU-Cu materials not only promote the proliferation of EC but also inhibit SMC growth. Moreover, MA culture results intuitively stated the anti-inflammatory ability of PU-Cu. In addition, experimental samples were implanted into the subcutaneous tissue of Sprague Dawley rats. The anti-inflammatory function of PU-Cu was further confirmed by haematoxylin-eosin staining results. With regard to their excellent biological performance, PU-Cu materials are proposed for biocompatibility improvement of blood-contacting materials, which should in turn provide new ideas for advanced medical devices.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44207909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Influence of collagen fibre orientation on the frictional properties of articular cartilage 胶原纤维取向对关节软骨摩擦性能的影响

Biosurface and Biotribology Pub Date : 2021-05-05 DOI: 10.1049/bsb2.12005

Seido Yarimitsu, Kei Ito, Hiromichi Fujie

引用次数: 0

On/off switching of adhesion in gecko-inspired adhesives 壁虎粘合剂中粘附力的开/关切换

Biosurface and Biotribology Pub Date : 2021-05-05 DOI: 10.1049/bsb2.12003

Tetsuo Yamaguchi, Akira Akamine, Yoshinori Sawae

引用次数: 2

Development of a pendulum machine for measuring contact lens friction 测量隐形眼镜摩擦的摆摆机的研制

Biosurface and Biotribology Pub Date : 2021-05-02 DOI: 10.1049/bsb2.12004

Kiyoshi Mabuchi, Hiroko Iwashita, Rina Sakai, Masanobu Ujihira, Yuichi Hori

{"title":"Development of a pendulum machine for measuring contact lens friction","authors":"Kiyoshi Mabuchi, Hiroko Iwashita, Rina Sakai, Masanobu Ujihira, Yuichi Hori","doi":"10.1049/bsb2.12004","DOIUrl":"10.1049/bsb2.12004","url":null,"abstract":"<p>The lubrication ability of a contact lens is one of its most essential properties because high friction on an eyelid causes discomfort during blinking. Friction measurements allow assessment of lubrication ability. So far, several apparatuses have been developed to measure contact lens friction. However, thus far, ocular physiological conditions including sliding speed and area have been imperfectly realised. Herein, a pendulum-type friction tester was developed for the assessment of contact lenses under physiological conditions. A high sliding speed of 90 mm/s was achieved thanks to the short oscillation period of the small pendulum. Physiologically, the sliding surface on a contact lens was realised at the fulcrum of the pendulum. The coefficient of friction for the interaction between a contact lens and plastic hemisphere was directly calculated from the decay in potential energy during the free libration of the pendulum. Friction coefficient of a commercially available contact lens in saline solution, 0.1% and 0.3% HA solutions were 0.036, 0.039 and 0.050, respectively. These results were reliable because they ranged within the low levels reported by previous studies. It was shown that the present pendulum machine represents a major advancement in the realisation of physiologically realistic contact lens friction measurement.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42364434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The development of simulator testing for total knee replacements 全膝关节置换术模拟试验的研制

Biosurface and Biotribology Pub Date : 2021-04-26 DOI: 10.1049/bsb2.12001

Chase Maag, Amber Metcalfe, Ioan Cracaoanu, Casey Wise, Daniel D. Auger

引用次数: 1

Measuring the micromechanical properties of oesophageal mucosa with atomic force microscopy 用原子力显微镜测定食管黏膜的微观力学性质

Biosurface and Biotribology Pub Date : 2020-12-16 DOI: 10.1049/bsbt.2020.0015

Chengxiong Lin, Jingyang Xie, Wei Li

{"title":"Measuring the micromechanical properties of oesophageal mucosa with atomic force microscopy","authors":"Chengxiong Lin, Jingyang Xie, Wei Li","doi":"10.1049/bsbt.2020.0015","DOIUrl":"10.1049/bsbt.2020.0015","url":null,"abstract":"<div>\u0000 <p>The micromechanical properties of soft tissue can be used as markers for the physiological state and function of the tissue. Deep understanding of the micromechanics of soft tissue, such as the oesophagus, is of great significance to the design of artificial oesophagi, endoscope materials and coatings for medical devices. Here, the micromechanical properties of oesophageal mucosa were studied under different loading rates, deflections, and dwell time by using atomic force microscopy. The micromechanical properties of soft tissue included elastic modulus, plasticity and adhesion force. Results showed that the micromechanical properties changed with increasing loading rate, deflection and dwell time. The micromechanical properties of oesophageal mucosa were related to time-dependent behaviours, such as contact stress, energy transformation, and strain gradient plasticity. Furthermore, the heterogeneity of oesophageal mucosa affected the micromechanical properties. The force mapping mode was a reliable and effective means to study the micromechanical properties of soft tissue. The results can provide a basis and technical support for the diagnosis of oesophageal diseases from a microscale as well as a material design perspective.</p>\u0000 </div>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsbt.2020.0015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47489121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0