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.

截肢者残肢的形状和表面状况在整个过程中都在变化， 天因此，传统的静态假体装置在相对短的使用之后引起不适。 该研究方向的长期目标是创造一种新型的假肢， 矫形器接口。这些设备将动态地符合人体，同时管理 界面处的环境变量，包括压力分布，剪切应力， 湿度、温度、污染程度和皮肤状况。这些设备将允许 更长时间的舒适穿着，而不会形成摩擦水泡和其他形式的 皮肤和组织损伤。 拟议项目的目标是开发基于 灵活的阵列，并建立一个原型的假体内衬与分布式传感能力。 柔性阵列背后的中心思想是使用单峰场感测，在这种情况下， 场，用于通过选择性表面官能化测量感兴趣的性质。这 方法提供了优于多原理传感器融合方法的优点，因为它允许 降低传感器阵列的电子接口的复杂性。的复杂性降低 传感器单元级的电子器件对于实现薄、紧凑、高 分辨率和灵活的传感器阵列，可以测量假肢上的多个变量， 内衬/残肢界面。 具体目标包括：a）用于测量的柔性传感阵列的设计， 湿度、温度、压力和剪切应力; B）将该阵列整合到假体中 衬垫/插座;以及c）装置性能的测试。这些目标将通过切割来实现- 材料科学和微处理器控制的前沿发展。薄膜有机 电子器件将与弹性导体、金属电极阵列和 与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。的最终目标 传感器原型是实现所有感兴趣的变量的测量， 精度、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）设计更好的假体装置，以及B）对 发生在内衬-肢体界面。由于军事冲突和老龄化，截肢越来越频繁。 糖尿病人群。该项目将帮助研究人员建造智能人造手臂和腿， 可以长时间佩戴而不会引起不适。这些设备将大大改善 截肢者的生活质量。