In-Shoe Plantar Shear and Pressure Sensing System

鞋内足底剪切力和压力传感系统

• 批准号: 6933504
• 负责人: GORDON B HIRSCHMAN
• 金额: $ 25.81万
• 依托单位: INFOSCITEX CORPORATION
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-05-01 至 2006-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6933504
• 关键词: biomechanics; biomedical equipment development; foot; mechanical pressure; miniature biomedical equipment; patient monitoring device; shear stress

DESCRIPTION (provided by applicant): Foot ulceration is a diabetic complication estimated to result in over $1 billion worth of medical expenses per year in the United States alone. Increasing evidence indicates that a combination of elevated external forces (pressure and shear) and altered tissue properties is of prime importance in the etiology of foot ulcers. Although commercial platform and in-shoe systems to measure plantar pressure are in clinical use, a system that can measure both horizontal shear and vertical pressure remains to be developed and commercialized. The overall goal of the proposed research is to develop a multipoint, insole system that can accurately characterize both pressure and shear across the plantar surface, is thin and flexible enough to provide minimal interference with normal foot-shoe interaction, can be easily manufactured, and holds calibration sufficient for research and clinical use. In our Phase I program we will develop an array of 9 sensors with the accompanying electronics that can accurately measure applied normal pressure as high as 700 kPa and shear as high as 200 kPa. We will integrate this array into a single thin, flexible, compliant structure that will form the basis for a Phase II insole system and we will perform laboratory testing using two specially developed test fixtures to demonstrate sensor array performance against our success criteria for size, accuracy and stability of calibration. Success in Phase I will lead to full-scale implementation of an insole system with over 100 sensors in Phase II. We also plan in Phase II to integrate the system with software in development for visualization of foot pressure and shear data (1 R43 DK61164-01A1, Phase II award pending). The combined insole sensor and visualization software system would then be evaluated with data collected from both diabetic and normal patients. Commercial availability of a complete hardware and software analysis system to measure pressure and shear will greatly improve the diagnosis, prevention, and treatment of foot ulcers in diabetic patients.

描述（由申请人提供）：足部溃疡是一种糖尿病并发症，估计在美国，每年每年的医疗费用价值超过10亿美元。越来越多的证据表明，升高的外力（压力和剪切）和改变组织特性的结合在脚溃疡的病因中至关重要。尽管在临床使用中，用于测量足底压力的商业平台和鞋帮系统，但可以测量水平剪切和垂直压力的系统仍有待开发和商业化。拟议的研究的总体目标是开发一个多点，鞋垫系统，该系统可以准确地表征整个足底表面的压力和剪切，薄而灵活，足以提供与正常脚鞋相互作用的最小干扰，可以轻松制造，并保持足以进行研究和临床使用的校准。 在我们的第I阶段计划中，我们将开发9个传感器的阵列，并具有随附的电子设备，可以准确测量施加的正常压力高达700 kPa，剪切高达200 kPa。我们将将该数组整合到单个薄，灵活，兼容的结构中，这将构成II期鞋垫系统的基础，我们将使用两个特殊开发的测试固定装置进行实验室测试，以证明有关校准的大小，准确性和稳定性的成功标准，以证明传感器阵列性能。 第一阶段的成功将导致II阶段超过100个传感器的鞋垫系统的全面实现。我们还计划在II阶段将系统与开发的软件集成，以可视化脚压力和剪切数据（1 R43 DK61164-01A1，II期奖励）。然后，将使用糖尿病和正常患者收集的数据来评估合并的鞋垫传感器和可视化软件系统。完整的硬件和软件分析系统以测量压力和剪切的商业可用性将极大地改善糖尿病患者的足部溃疡的诊断，预防和治疗。