Vibrotactile Feedback for Prosthetic Limbs

假肢的振动触觉反馈

• 批准号: 6935040
• 负责人: RONALD Raymond RISO
• 金额: $ 12.09万
• 依托单位: INNERSEA TECHNOLOGY, INC
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6935040
• 关键词: artificial limbs; biomedical equipment development; human subject; medical implant science; method development; prosthesis; sensory feedback; sound frequency; touch; vibration

DESCRIPTION (provided by applicant): The functionality and user acceptance of prosthetic limbs and myoelectric prostheses in particular can be improved by providing sensory feedback. This project aims to develop a sensory system which prosthetists can incorporate into (or retrofit to) presently available myoelectric arms. The system will be non-invasive and is based on using an array of vibrotactile actuators to input coded information to the skin of the residual limb. Three categories of sensory information will be targeted for powered arms: grasp force, object slippage and either wrist rotation (i.e. pronation/supination) or span of finger opening. Prior work in developing vibrotactile strategies for sensory substitution has shown it is a promising approach. The implementation of that research into the marketplace, however, is being held up by a lack of suitable vibration actuators. The Specific Aim of this PHASE 1 project is to develop vibration actuators specifically for use with artificial limbs. The designed actuators will have minimal bulk and mass; consume only modest power; be inexpensive to fabricate; and require no maintenance. This project will develop novel solenoid type actuators, because optimal vibrotactile feedback codes require varying the vibration frequency and amplitude independently, and this can not be achieved using typical cell phone and pager rotatory motor based vibrators where the frequency and amplitude co-vary. The PHASE 1 work will develop prototypes of the novel actuators and test them for their suitability as input devices for vibrotactile sensory feedback codes for use with upper and lower extremity prosthesis users. In PHASE 2, the sensory feedback system will be extensively tested with upper extremity amputee subjects to optimize the coding strategy; validate that the system adds functionality to the prostheses; and demonstrate the reliability of the system components. Additionally, during PHASE 2, we will expand the user base to include lower extremity prosthesis users, where foot-floor contact and knee position information will be targeted.

描述（由申请人提供）：可以通过提供感官反馈来改善假肢和肌电假体的功能和用户接受。该项目旨在开发一种感官系统，假肢可以将其纳入目前可用的肌电臂（或改造为）。该系统将是无创的，并且基于使用一系列颤振执行器将编码的信息输入残留肢体的皮肤。三类的感官信息将针对动力臂：抓握力，物体滑动和手腕旋转（即旋转/supination/supination）或手指开口的跨度。开发葡萄圆曲目策略进行感觉替代的事务表明，这是一种有前途的方法。但是，由于缺乏合适的振动执行器，该研究对市场的实施正在推迟。该第1阶段项目的具体目的是开发专门用于人造四肢的振动执行器。设计的执行器将具有最小的体积和质量。仅消耗适中的功率；便宜地制造；并且不需要维护。该项目将开发新型的螺线管型致动器，因为最佳的颤振反馈代码需要独立改变振动频率和振幅，并且使用典型的手机和Pager旋转电动机振动器无法实现这一点，在该频率和振幅共同的情况下。第1阶段的工作将开发新型执行器的原型，并将其作为用于纤维曲折感觉反馈代码的输入设备，以与上肢和下肢假体使用者一起使用。在第2阶段中，感觉反馈系统将通过上肢截肢受试者进行广泛测试，以优化编码策略。验证系统会为假体添加功能；并演示系统组件的可靠性。此外，在第2阶段，我们将扩大用户群，包括下肢假体用户，在该用户中，脚层接触和膝盖位置信息将被针对目标。