MICA: Integrated interfacial sensors for assessments of lower limb prosthetics

MICA：用于评估下肢假肢的集成界面传感器

• 批准号: MR/L013096/1
• 负责人: Liudi Jiang
• 金额: $ 54.64万
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=MR%2FL013096%2F1
• 关键词: MICA; Integrated; interfacial; sensors; assessments

The research proposed aims to address a technology shortfall that exists in lower limb prosthetics, that is stump-socket loading measurement which is also the single most important unmet need in the field. Without a solution which offers a practical means of dynamic load measurement of the stump-socket interface, determination of socket fit, the single biggest factor determining prosthetic outcomes will remain un-quantified and problematic. The impact of the solution cannot be overstated, as it is likely to yield a paradigm shift in prosthetics care and lead to new knowledge and understanding of the dynamics of stump-socket interface loading.The aim of the proposed research is to produce a validated "intelligent liner" prototype which provides combined mechanical pressure and shear load measurements at this important loading interface. The intelligent liner will be built around a standard prosthetic liner solution and thus be in a form practical for normal everyday prosthetic use overcoming the practicality deficit of existing pressure only measurement solution. It is important to state in comparison with the proposed solution, existing measurement system exist in a form which are not practical for everyday normal use and are only suitable for short duration laboratory measurement. Furthermore no existing commercialised system has the combined capability of pressure and shear measurement. Shear loading is a fundamental and potentially damaging component of loading at the socket interface which can contribute significantly to tissue damage. This to date while widely known as a significant issue has remained largely un-quantified to the lack of suitable sensing technologies. To get to this prototype, the first objective is to develop a laboratory based stump-socket interface simulator and a system of "control" tests which can be used for liner design optimization. The simulated load tests will be validated from gait analysis measurement to ensure the simulator provides loading which is valid biomechanically and which have a high degree of repeatability and reliability. The next stage is to optimize the intelligent liner design into a form that is practical and can be reliably used in the short to-medium term for loading measurement. The final aims are is to further validate the prototype and combined measurement system taking into account clinical factors that may determine the repeatability of measurements for example such as don/doffing sensor positioning variations. The final outcome is a prototype liner design with combined instrumentation and data visualization which is ready for commercialization. The overall outcome of the project will have demonstrated the technical feasibility of the solution for production on a commercial scale Moreover the intelligent liner design will have been validated for viability through preliminary clinical testing towards commercial clinical product applications.

提出的这项研究旨在解决下肢假体中存在的一个技术缺陷，即残端插座载荷测量，这也是该领域最重要的未满足的需求。如果没有一种解决方案来提供残端-插座接口的动态负荷测量的实用手段，即确定插座适合性，那么决定假体结果的单个最大因素将仍然是无法量化的和有问题的。该解决方案的影响怎么强调都不为过，因为它可能导致假体护理的范式转变，并导致对残端-插座界面加载动力学的新知识和理解。拟议的研究的目的是产生一种经过验证的“智能衬垫”原型，它可以在这个重要的加载界面上提供机械压力和剪切载荷的组合测量。智能衬垫将围绕标准的假体衬垫解决方案构建，因此将以一种适用于正常日常假肢使用的形式，克服现有仅限压力测量解决方案的实用性缺陷。重要的是，与建议的解决方案相比，现有的测量系统以一种不适用于日常正常使用的形式存在，并且仅适用于短期的实验室测量。此外，现有的商业化系统都不具备压力和剪切测量的综合能力。剪切载荷是牙槽窝界面载荷的一个基本的和潜在的破坏性成分，它可以显著地导致组织损伤。迄今为止，尽管人们普遍认为这是一个重大问题，但由于缺乏适当的传感技术，这一问题在很大程度上仍未量化。为了实现这个原型，第一个目标是开发一个基于实验室的树桩-插座接口模拟器和一个可用于衬里设计优化的“控制”测试系统。模拟载荷测试将通过步态分析测量进行验证，以确保模拟器提供的载荷在生物力学上是有效的，并且具有高度的重复性和可靠性。下一阶段是优化智能衬垫设计，使其成为一种实用的形式，可以在中短期内可靠地用于载荷测量。最终目标是进一步验证原型和组合测量系统，同时考虑可能决定测量重复性的临床因素，例如DON/DOFFING传感器位置变化。最终的结果是将仪器和数据可视化相结合的原型衬垫设计，该设计已准备好商业化。该项目的总体结果将证明该解决方案用于商业规模生产的技术可行性，此外，智能衬垫设计将通过初步临床测试进行商业临床产品应用的可行性验证。

项目成果

Interfacial pressure and shear sensor system for fingertip contact applications.

适用于指尖接触应用的界面压力和剪切力传感器系统。

• DOI: 10.1049/htl.2016.0062
• 发表时间: 2016
• 期刊: Healthcare technology letters
• 影响因子: 2.1
• 作者: Valero M

Clinical evaluation of a measurement system for loading at the lower limb stump/socket interface

下肢残肢/接受腔界面负载测量系统的临床评估

• 发表时间: 2016
• 作者: McGrath M

3-directional load sensing system for stump-socket interface

用于树桩插座接口的 3 向负载传感系统

• 发表时间: 2014
• 期刊: proceeding of 2014 ISPO UK scientific meeting
• 作者: Laszczak, P

Influence of stump/socket relative movement on gait analysis for above knee amputees - A case study

残肢/接受腔相对运动对膝上截肢者步态分析的影响 - 案例研究

• 发表时间: 2014
• 期刊: proceeding of 2014 ISPO UK scientific meeting
• 作者: Tang, J