Distributed Sensing for Prosthetic Sockets

假肢接受腔的分布式传感

• 批准号: 7785859
• 负责人: ALEXANDER V MAMISHEV
• 金额: $ 1.54万
• 依托单位: UNIVERSITY OF WASHINGTON
• 依托单位国家: 美国
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-02-15 至 2011-01-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7785859
• 关键词: Accounting; Aging; American; Amputation; Amputees; Area; Artificial Arm; Artificial Leg; Arts; Atherosclerosis; Bulla; Caring; Cells; Characteristics; Complications of Diabetes Mellitus; Conflict (Psychology); Data; Development; Device Designs; Devices; Electrodes; Electronics; Environment; Exploratory/Developmental Grant; Film; Friction; Funding; Future; Goals; Health Services Accessibility; Human body; Humidity; In Situ; Inferior; Laboratories; Lead; Leg; Length; Life; Limb structure; Lower Extremity; Measurement; Measures; Mechanics; Medical; Metals; Microprocessor; Military Personnel; Nature; Neuropathy; Orthotic Devices; Patients; Performance; Physiological; Population; Positioning Attribute; Postoperative Period; Process; Property; Prosthesis; Quality of life; Rehabilitation therapy; Relative (related person); Research; Research Personnel; Research Project Grants; Residual state; Resolution; Science; Shapes; Simulate; Skin; Skin Tissue; Staging; Surface; System; Technology; Temperature; Testing; Time; Tissues; Ulcer; base; design; diabetic; elastomeric; electric field; experience; flexibility; follow-up; foot; high risk; human subject; improved; innovation; interest; metropolitan; orthotics; pressure; prevent; prototype; sensor; shear stress; skin irritation; success

The shape and surface conditions of the residual limbs of amputees change throughout the day. Therefore, traditional static prosthetic devices cause discomfort after relatively short use. The long-term objective of this research direction is to create a new class of prosthetic and orthotic interfaces. These devices will dynamically conform to the human body while managing the environment variables at the interface, including pressure distribution, shear stress, moisture, temperature, degree of contamination, and skin condition. These devices will allow much longer periods of comfortable wear without formation of friction blisters and other forms of skin and tissue damage. The goal of the proposed project is to develop enabling sensing technology based on a flexible array and to build a prototype of a prosthetic liner with distributed sensing capability. The central idea behind the flexible array is to use unimodal field sensing, in this case, electric field, for measurement of properties of interest through selective surface functionalization. This approach offers advantages over multi-principle sensor fusion approaches because it allows reduction of complexity of electronic interface of the sensor array. Reduced complexity of electronics at the sensor cell level is critical for achieving the goal of thin, compact, high- resolution, and flexible sensor arrays that can measure multiple variables at the prosthetic liner/residual limb interface. The specific aims include a) the design of the flexible sensing array for measurement of moisture, temperature, pressure, and shear stress; b) integration of this array into a prosthetic liner/socket; and c) testing of device performance. These aims will be realized using cutting- edge developments in materials science and microprocessor control. Thin-film organic electronics will be combined with elastomeric conductors, metal electrode arrays, and multiplexed with a central microcontroller in order to achieve real-time measurement of temperature, moisture concentration, pressure, and shear stress. The final objective for the sensor prototype is to achieve measurement of all variables of interest with a sufficient accuracy, resolution, and repeatability. The project will set the stage for two future research directions: a) design of better prosthetic devices, and b) fundamental study of processes that take place at the liner-limb interface. Limb amputations are increasingly frequent, due to military conflicts as well as the aging diabetic population. This project will help researchers build smart artificial arms and legs that can be worn for a long time without causing discomfort. Such devices will greatly improve the quality of life of amputees.

截肢者残留的肢体的形状和表面条件在整个过程中变化 天。因此，传统的静态假体设备在相对较短的使用后会引起不适。 该研究方向的长期目标是创建新的假肢和 矫形接口。这些设备将在管理时动态符合人体 界面处的环境变量，包括压力分布，剪切应力， 水分，温度，污染程度和皮肤状况。这些设备将允许 较长的舒适磨损时期，没有摩擦水泡和其他形式的 皮肤和组织损伤。 拟议项目的目的是开发基于 柔性阵列并构建具有分布式感应能力的假肢衬里的原型。 灵活阵列背后的核心思想是使用单峰场感应，在这种情况下为电气 字段，用于测量通过选择性表面功能化对感兴趣的性质的测量。这 方法比多原理传感器融合方法具有优势，因为它允许 传感器阵列电子界面的复杂性降低。降低的复杂性 传感器电池水平的电子设备对于实现薄，紧凑，高 - 的目标至关重要 分辨率和灵活的传感器阵列可以测量假肢的多个变量 衬里/残留肢体接口。 具体目的包括a）柔性传感阵列的设计用于测量 水分，温度，压力和剪切应力； b）将此阵列整合到假肢中 衬里/插座; c）设备性能的测试。这些目标将使用替代实现 - 材料科学和微处理器控制的边缘发展。薄膜有机 电子设备将与弹性导体，金属电极阵列和 用中央微控制器多路复用，以实现实时测量 温度，水分浓度，压力和剪切应力。最终目标 传感器原型是实现所有感兴趣的变量的测量 准确性，分辨率和可重复性。该项目将为未来的两项研究奠定基础 方向：a）设计更好的假肢设备，b）对这些过程的基本研究 发生在衬里LIMB界面。由于军事冲突以及衰老，肢体截肢越来越频繁 糖尿病人口。该项目将帮助研究人员建立智能的人造手臂和腿部 可以长时间穿着而不会引起不适。这样的设备将大大改善 截肢者的生活质量。