SBIR Phase II: Advanced Controlled-Impedance Transfemoral Knee/Ankle Prosthesis

SBIR 第二阶段：先进的受控阻抗跨股膝/踝假体

• 批准号: 0450632
• 负责人: Edwin Iversen
• 金额: --
• 依托单位: MOTION CONTROL, INC.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-01-15 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0450632&HistoricalAwards=false
• 关键词: SBIR; Phase; II; Advanced; Controlled

This Small Business Innovation Research (SBIR) Phase II project aims to develop a transfemoral prosthesis which will allow wearers to walk and run more smoothly, with greater stability and less effort. Typically, transfemoral amputees have difficulty achieving a natural gait, thus causing discomfort and greater energy expenditure. It is expected that the development of this advanced prosthesis will greatly enhance the function and comfort of amputees and bring new technology to the prosthetic industry. In Phase I research, a unique engineering model of the knee and the ankle was developed, implementing the pneumatic compliance (spring) and electrically-controlled hydraulic damping. In Phase II, complete prototypes of the microprocessor-controlled knee/ankle prosthesis will be developed, with the following features: (a) compliant (elastic, rather than stiff) knee flexion during stance phase, which will return energy to the wearer and improve comfort, (b) co-ordination of knee and ankle impedance to match desired walking cadence, and minimal energy expenditure by tuning the spring rate to the natural frequency; and (c) myoelectric control of knee impedance. In addition, high-performance features will be integrated into the prosthetic device, including adaptive swing phase knee impedance, and automatic control of stance phase impedance.The commercial application of this project will be in the area of prosthetic devices for use by people with knee and foot (transfemoral) amputation. The proposed product will allow the amputees to wear their prosthesis for a longer time period, with less effort and more safety, and to walk on more rugged and uneven terrain. Estimates of revenues resulting from this project show gross sales starting at $750,000 per year, growing rapidly after 5 years to over $8,000,000.

这个小型企业创新研究（SBIR）二期项目旨在开发一种经股骨假体，使佩戴者能够更平稳地行走和跑步，更稳定，更省力。通常情况下，经股截肢者很难达到自然的步态，从而导致不适和更大的能量消耗。预计这种先进假肢的开发将大大提高截肢者的功能和舒适度，并为假肢行业带来新技术。在第一阶段的研究中，开发了一个独特的膝关节和踝关节工程模型，实现了气动柔度（弹簧）和电控液压阻尼。在第二阶段，将开发微处理器控制的膝关节/踝关节假体的完整原型，具有以下特征：(a)在站立阶段膝关节弯曲柔顺（弹性，而不是僵硬），这将向佩戴者返回能量并提高舒适度；(b)膝关节和踝关节阻抗的协调，以匹配所需的步行节奏，并通过将弹簧频率调整到自然频率来减少能量消耗；(c)膝关节阻抗的肌电控制。此外，该假肢装置还将集成高性能功能，包括自适应摆动相位膝关节阻抗和自动控制姿态相位阻抗。该项目的商业应用将在膝关节和足部（经股）截肢患者使用的假肢装置领域。拟议的产品将允许截肢者佩戴假肢更长时间，更少的努力和更安全，并在更崎岖不平的地形上行走。该项目产生的收入估计显示，总销售额从每年75万美元开始，5年后迅速增长到超过800万美元。