Biosurface and Biotribology最新文献_第8页

Friction behaviour between a laparoscopic grasper and the large intestine during minimally invasive surgery 微创手术中腹腔镜抓取器与大肠之间的摩擦行为

Biosurface and Biotribology Pub Date : 2021-11-16 DOI: 10.1049/bsb2.12028

Yan Guo, Chengmo Cai, Wei Li

{"title":"Friction behaviour between a laparoscopic grasper and the large intestine during minimally invasive surgery","authors":"Yan Guo, Chengmo Cai, Wei Li","doi":"10.1049/bsb2.12028","DOIUrl":"10.1049/bsb2.12028","url":null,"abstract":"Slippage is a common phenomenon between laparoscopic graspers and tissues during minimally invasive surgery, which may lead to inefficient surgical operations, prolonged operation time, and increased patient suffering. The stability factors related to the friction behaviour between laparoscopic graspers and the large intestine, including bio-surface liquids, pulling angle, and surface profile of graspers, were studied. The friction behaviour at the large intestine–grasper interface was tested using a UMT-II tribometer under the conditions of clamping force of 1–4 N, sliding displacement of 15 mm, and sliding velocity of 2 mm/s to simulate the grasping and pulling operations of soft tissue. The results showed that the bio-surface liquid (serum) of the large intestine significantly decreased the friction coefficient, thus reducing the grasping efficiency. A pulling angle of 15° could generate the peak frictional force and enhance the grasping stability. The frictional force increased with the ratio of the profile surface area of the grasper. These results demonstrate that the grasping stability can be improved by changing either the bio-surface liquid condition or the pulling angle. In addition, a grasper with a larger profile surface area can also prevent slippage due to its significant influence on the pressure distribution and actual contact area for tissue retention.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"8 1","pages":"58-68"},"PeriodicalIF":0.0,"publicationDate":"2021-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12028","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45947188","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

Numerical wear study of metal-on-ultrahigh molecular weight polyethylene-based cervical total disc arthroplasty by coupling finite element analysis and multi-body dynamics 基于有限元分析和多体动力学的金属-超高分子量聚乙烯基颈椎全椎间盘置换术磨损数值研究

Biosurface and Biotribology Pub Date : 2021-10-08 DOI: 10.1049/bsb2.12026

Hua Xin, Lei Zhang, Hao Diao, Junhong Jia, Zhongmin Jin

{"title":"Numerical wear study of metal-on-ultrahigh molecular weight polyethylene-based cervical total disc arthroplasty by coupling finite element analysis and multi-body dynamics","authors":"Hua Xin, Lei Zhang, Hao Diao, Junhong Jia, Zhongmin Jin","doi":"10.1049/bsb2.12026","DOIUrl":"10.1049/bsb2.12026","url":null,"abstract":"In this study, the effects of in vivo (head flexion-extension, lateral bending, and axial rotation) and in vitro (ISO 18192-1) working conditions on the wear of ultrahigh molecular weight polyethylene (UHWMPE)-based cervical disc prosthesis were studied via numerical simulation. A finite-element-based wear prediction framework was built by using a sliding distance and contact area dependent Archard wear law. Moreover, a pre-developed cervical spine multi-body dynamics model was incorporated to obtain the in vivo conditions. Contact mechanic analysis stated that in vitro conditions normally led to a higher contact stress and a longer sliding distance, with oval or crossing-path-typed sliding track. In contrast, in vivo conditions led to a curvilinear-typed sliding track. In general, the predicted in vivo wear rate was one order of magnitude smaller than that of in vitro. According to the yearly occurrence of head movement, the estimated total in vivo wear rate was 0.595 mg/annual. While, the wear rate given by the ISO standard test condition was 3.32 mg/annual. There is a significant impact of loading and kinematic condition on the wear of UHMWPE prosthesis. The work conducted in the present study provided a feasible way for quantitatively assessing the wear of joint prosthesis.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"251-260"},"PeriodicalIF":0.0,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42669959","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

Interactions between hyaluronic acid and CoCrMo alloy surface in simulated synovial fluids 模拟滑液中透明质酸与CoCrMo合金表面的相互作用

Biosurface and Biotribology Pub Date : 2021-10-03 DOI: 10.1049/bsb2.12027

Simona Radice, Gretchen Tibbits, Alex Y. W. Lin, Haluk Beyenal, Markus A. Wimmer

{"title":"Interactions between hyaluronic acid and CoCrMo alloy surface in simulated synovial fluids","authors":"Simona Radice, Gretchen Tibbits, Alex Y. W. Lin, Haluk Beyenal, Markus A. Wimmer","doi":"10.1049/bsb2.12027","DOIUrl":"10.1049/bsb2.12027","url":null,"abstract":"The performance of CoCrMo alloy in orthopaedic implants may be unfavourably affected by hyaluronic acid (HA) in synovial fluid. In this study, the authors aimed to understand the interactions between HA and CoCrMo using dedicated electrochemical experiments and surface analyses. A sequence of electrochemical measurements (open-circuit potential, linear polarization resistance, potentiodynamic and potentiostatic polarizations) was run on LC-CoCrMo (ASTM F1537) in Dulbecco's phosphate-buffered saline (DPBS) solution with and without HA and in DPBS mixed with newborn calf serum (NCS) and HA, partially under simultaneous recording of surface pH using custom-made microelectrodes. Samples were analysed by optical and electron microscopy. HA had no significant impact on the corrosion potential of CoCrMo alloy (ECORR = −173 ± 8, −211 ± 16, and −254 ± 30 mVAg/AgCl, in DPBS, DPBS + HA, and DPBS + NCS + HA, respectively). Average current density values at the transpassive domain were double in DPBS compared to DPBS + HA and DPBS + NCS + HA. At potentials above +0.6 VAg/AgCl, surface pH values decreased from 7.5 to 6.5 in DPBS and from 7.5 to below 4 in DPBS + HA. In conclusion, the presence of HA did not compromise the corrosion resistance of CoCrMo alloy at free potential, but it enhanced acidic conditions at the near surface under anodic-applied potential in the transpassive domain.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"239-250"},"PeriodicalIF":0.0,"publicationDate":"2021-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49306217","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

From rock-boring organisms to tunnel boring machines: A new rock breaking technology by bioinspiration 从钻岩生物到隧道掘进机:生物灵感破岩新技术

Biosurface and Biotribology Pub Date : 2021-09-17 DOI: 10.1049/bsb2.12025

Jing Zheng, Zhixin Wu, Jiahui Nie, Lei Lei, Zhongrong Zhou, Jianbin Li

{"title":"From rock-boring organisms to tunnel boring machines: A new rock breaking technology by bioinspiration","authors":"Jing Zheng, Zhixin Wu, Jiahui Nie, Lei Lei, Zhongrong Zhou, Jianbin Li","doi":"10.1049/bsb2.12025","DOIUrl":"10.1049/bsb2.12025","url":null,"abstract":"The purpose of this study is to achieve better understanding of associated mechanisms and to recommend and identify new strategies to develop new rock breaking technology for Tunnel Boring Machines (TBMs). Tunnel Boring Machine tunnelling mainly depends upon the rock breakage caused by cutters moving on a rock surface in a rolling and sliding motion while under the action of thrust force. The rock breaking behaviour is controlled by the mechanical interaction between the cutters and the rock. Due to the high hardness and high abrasiveness of rock, the cutters have to work under very high thrust force and suffer heavy-load-impact and abrasive wear, causing serious wear and low rock breaking efficiency. Rock-boring organisms exist in nature, which achieve drilling and/or tunnelling in rocks through a tribochemical interaction. This phenomenon is called bioerosion and the organisms are natural ‘TBMs’ to some degree. In this study, the interaction between TBM cutters and rock is presented, and current measures to improve cutter wear and rock breaking efficiency and their limitations are reported. Then, the connotation, mechanism and typical cases of bioerosion are presented. Finally, inspired by bioerosion, a new chemically assisted rock breaking technology is proposed for TBMs.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"233-238"},"PeriodicalIF":0.0,"publicationDate":"2021-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57691702","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

The co-effect of microstructures and mucus on the adhesion of abalone from a mechanical perspective 从力学角度看微观结构与黏液对鲍鱼黏附的共同影响

Biosurface and Biotribology Pub Date : 2021-08-23 DOI: 10.1049/bsb2.12024

Jing Li, Chuandong Ma, Jun Liu, Xiangwei Dong, Jianlin Liu

引用次数: 5

Transient mixed lubrication model of the human knee implant 人体膝关节假体的瞬态混合润滑模型

Biosurface and Biotribology Pub Date : 2021-08-22 DOI: 10.1049/bsb2.12020

Hamza Butt, Lee Nissim, Leiming Gao, Connor Myant, Greg de Boer, Robert Hewson

{"title":"Transient mixed lubrication model of the human knee implant","authors":"Hamza Butt, Lee Nissim, Leiming Gao, Connor Myant, Greg de Boer, Robert Hewson","doi":"10.1049/bsb2.12020","DOIUrl":"10.1049/bsb2.12020","url":null,"abstract":"The human knee implant is computationally modelled in the mixed lubrication regime to investigate the tribological performance of the implant. This model includes the complex geometry of the implant components, unlike elliptical contact models that approximate this geometry. Film thickness and pressure results are presented for an ISO gait cycle to determine the lubrication regime present within the implant during its operation. It was found that it was possible for the lubrication regime to span between elastohydrodynamic, mixed and boundary lubrication depending on the operating conditions of the implant. It was observed that the tribological conditions present in one condyle were not necessarily representative of the other. Multiple points of contact were found within the same condyle, which cannot be computed by the elliptical contact solvers. This model can be used to balance forces in all directions, instead of only the normal loads, as often done in elliptical contact models. This work is an initial step towards understanding the role of the complex geometry in the tribological characteristics of the human knee implant when operating in physiological conditions.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"206-218"},"PeriodicalIF":0.0,"publicationDate":"2021-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44784952","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: 4

Polyurethane coated with polyvinylpyrrolidones via triazole links for enhanced surface fouling resistance 聚氨酯涂层聚乙烯吡咯烷酮通过三唑链接增强表面耐污性

Biosurface and Biotribology Pub Date : 2021-08-20 DOI: 10.1049/bsb2.12023

Xin Wen, Rashed Almousa, Sungsoo Na, Gregory G. Anderson, Dong Xie

{"title":"Polyurethane coated with polyvinylpyrrolidones via triazole links for enhanced surface fouling resistance","authors":"Xin Wen, Rashed Almousa, Sungsoo Na, Gregory G. Anderson, Dong Xie","doi":"10.1049/bsb2.12023","DOIUrl":"10.1049/bsb2.12023","url":null,"abstract":"Surfaces with hydrophilic and antimicrobial properties are very attractive for cardiovascular device-associated applications. The aim of this study was to prepare and coat a hydrophilic polymer containing a functional group capable of forming triazole functionality onto the surface of polyurethane (PU). The modified surfaces were assessed with cell adhesion, bacterial adhesion and bacterial viability. Mouse fibroblast cells (NIH-3T3) and three bacterial species were used for assessment. The results showed that the modified surface not only exhibited a significant reduction in cell adhesion with a 25%–59% decrease to mouse fibroblast but also showed a significant reduction in bacterial attachment with 26%–67%, 24%–61% and 23%–57% decrease to Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa, respectively, as compared with original PU. Furthermore, the polymer-modified surface exhibited a significant antibacterial function by inhibiting bacterial growth with reduction of 49%–84%, 44%–79% and 53%–79% to S. aureus, E. coli and P. aeruginosa, respectively, as compared with original PU. These results indicate that covalent polymer attachment enhanced the antibacterial and antifouling properties of the PU surface.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"219-227"},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43352079","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: 3

Measuring fracture toughness of human dental enamel at small scale using notched microcantilever beams 用缺口微悬臂梁小尺度测量人牙釉质断裂韧性

Biosurface and Biotribology Pub Date : 2021-08-18 DOI: 10.1049/bsb2.12022

Kangjie Chu, Cancan Zhao, Fuzeng Ren

引用次数: 1

Advanced biofabrication strategies for biomimetic composite scaffolds to regenerate ligament-bone interface 韧带-骨界面再生仿生复合支架的先进生物制造策略

Biosurface and Biotribology Pub Date : 2021-08-13 DOI: 10.1049/bsb2.12021

Nan Jiang, Mao Mao, Xiao Li, Weijie Zhang, Jiankang He, Dichen Li

{"title":"Advanced biofabrication strategies for biomimetic composite scaffolds to regenerate ligament-bone interface","authors":"Nan Jiang, Mao Mao, Xiao Li, Weijie Zhang, Jiankang He, Dichen Li","doi":"10.1049/bsb2.12021","DOIUrl":"10.1049/bsb2.12021","url":null,"abstract":"The natural ligament–bone interface features gradient changes in matrix composition, architecture and cell phenotype, which play critical roles in reliable ligament fixation and smooth loading transfer. Mimicking such organisations in artificial composite tissue-engineering scaffolds is important for realising functional fixation between ligament implants and host bones. Here, the authors aim to provide a comprehensive review on the latest strategies to fabricate biomimetic composite scaffolds for the regeneration of ligament-to-bone interface. The biomimetic composite scaffolds are divided into stratified and gradient scaffolds, which are characterised as layer-specific and continuous changes, respectively, in scaffold materials and/or microstructures. Biofabrication strategies for different types of composite scaffolds are summarised. The effects of material/structural changes on cellular morphology, cell differentiation, in vivo osteointegration and multi-tissue interface regeneration are highlighted. Finally, the potential challenges and future perspectives in engineering biomimetic composite scaffolds for ligament–bone interface regeneration are discussed.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"187-205"},"PeriodicalIF":0.0,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48634325","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

A mechanical study of personalised Ti6Al4V tibial fracture fixation plates with grooved surface by finite element analysis 个性化Ti6Al4V沟面胫骨骨折固定钢板的力学分析

Biosurface and Biotribology Pub Date : 2021-08-12 DOI: 10.1049/bsb2.12019

Bo Liao, Jipeng Sun, Cheng Xu, Rufeng Xia, Wei Li, Dong Lu, Zhongmin Jin

{"title":"A mechanical study of personalised Ti6Al4V tibial fracture fixation plates with grooved surface by finite element analysis","authors":"Bo Liao, Jipeng Sun, Cheng Xu, Rufeng Xia, Wei Li, Dong Lu, Zhongmin Jin","doi":"10.1049/bsb2.12019","DOIUrl":"10.1049/bsb2.12019","url":null,"abstract":"Low shape matching and high stress shielding rates between bone plate and human bone are not conducive to the primary healing of fracture. In this study, taking the fracture site of the lower one-third of human tibia as an application case, six types of personalised Ti6Al4V tibial plates with grooved surface were designed and evaluated by reverse engineering and finite element analysis. The results showed that the grooved design can reduce the stress shielding rate of bone plate and promote the facture healing. Among the six types of bone plates, the ‘OUT-MI’ bone plate has the lowest stress shielding rate and the most uniform stress distribution. Meanwhile, with the increasing tibial load during the convalescence, the average stress and maximum axial displacement of the tibial fracture surface increased, which can effectively improve the bone regeneration in the tibial fracture area. Moreover, there was no significant difference in four-point bending performance between the ‘OUT-MI’ bone plate and the ‘STR-BE’ bone plate, indicating that the mechanical properties of this bone plate were reliable. The results provide a theoretical basis for the design of fracture fixation plates on clinical treatment.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 3","pages":"142-153"},"PeriodicalIF":0.0,"publicationDate":"2021-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45342045","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