Apto-Ankle: Passive, Compliant Ankle with Enhanced Energy Storage and Return in Gait

Apto-Ankle：被动、顺应性踝关节，具有增强的能量存储和步态恢复功能

基本信息

批准号：
10821193
负责人：
Adam Karekin Arabian
金额：
$ 29.35万
依托单位：
ORTHOCARE INNOVATIONS, LLC
依托单位国家：
美国
项目类别：
财政年份：
2023
资助国家：
美国
起止时间：
2023-09-19 至 2024-08-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/10821193
关键词：
Achievement Address Amputees Ankle Anterior Articulation Behavior Clinical Clinical Research Communities Custom Development Electronics Environment Esthesia Feedback Feeling Gait Individual Laboratories Liquid substance Manufacturer Marketing Measurable Measures Mechanics Metabolic Microprocessor Motion Motor Movement Outcome Assessment Patients Performance Phase Phase Transition Prosthesis Prosthesis Design Quality of life Reporting Risk Safety Silicon Dioxide Small Business Innovation Research Grant Specific qualifier value Stress Surveys System Testing Toes Walking Work ankle prosthesis clinical practice cognitive load commercial application cost design design and construction foot improved light weight limb loss mechanical properties novel physical therapist prosthesis fitting prosthesis wearer prosthetic alignment prosthetic foot prototype research clinical testing residual limb safety and feasibility walking speed

项目摘要

PROJECT SUMMARY The Apto-Ankle project will create a novel low-cost, lightweight, unpowered passive compliant ankle that addresses the weaknesses of currently marketed hydraulic passive ankles by combining +/-10° of plantar and dorsiflexion with a gait dependent toe lock to provide energy storage and return, all without use of microprocessors or powered components. Appropriate for DMERC K-2 and K-3 individuals with transtibial limb loss, it will help them more efficiently and comfortably ambulate in their community environment, providing the documented benefits of passive compliant ankles with a forefoot loading phase transition from energy dissipation in the ankle to energy storage in the dynamic energy storage and return foot. This approach addresses the weaknesses of existing passive compliant ankles without adding the power or complexity of microprocessor-controlled ankles. By mechanically controlling dynamics based on parameters derived from normal ambulation and without additional cognitive burden on users, this design provides a gait and environmentally appropriate transition during stance from compliant, energy dissipation to dynamic energy storage and return. The Apto-Ankle project has three primary aims: 1) design and construction of 3 prototype Apto-Ankles to test adjustable components that determine gait dependent behaviors, both on the bench and on users, 2) bench testing to assess ankle performance against design specifications and confirm safety and robustness prior to clinical evaluation and 3) evaluate the proof-of-concept ankle by appropriately fitting it to users and evaluating it in a gait lab. Primary assessment outcomes will include objective measurable gait parameters and subjective clinical survey feedback from users. Successful design and implementation of the Apto-Ankle will enable individuals with transtibial limb loss to more easily ambulate in their normal community environment, increase stability, and increase amount of and comfort with ambulation in their typical activities and surroundings. The commercial application of Apto-Ankle is a low-cost, K-2 and K-3, lightweight prosthetic ankle that encourages ambulation, independence, and quality of life for transtibial prosthesis users.

项目概要 Apto-Ankle 项目将创造一种新颖的低成本、轻量级、无动力被动柔性脚踝，通过结合 +/-10° 的足底和背屈与步态相关的脚趾锁定提供能量存储和返回，所有这些都无需使用微处理器或供电组件。适用于经胫骨肢体丧失的 DMERC K-2 和 K-3 个体，它将帮助他们更有效地在社区环境中舒适地行走，提供被动顺从的已记录的好处具有前脚加载阶段的脚踝，从脚踝的能量耗散到脚踝的能量存储这种方法解决了现有无源技术的弱点。柔性脚踝，无需增加微处理器控制脚踝的力量或复杂性。基于正常行走的参数控制动力学，无需额外的认知这种设计在站立时提供了步态和环境适宜的过渡，从而减轻了用户的负担合规，能量耗散到动态能量存储和返回。 Apto-Ankle 项目有三个主要目标：1) 设计和建造 3 个原型 Apto-Ankle 进行测试可调节组件，可确定工作台上和用户的步态相关行为，2) 工作台测试根据设计规范评估脚踝性能，并在使用之前确认安全性和稳健性临床评估和 3) 通过将脚踝适当地安装到用户身上并评估来评估概念验证脚踝在步态实验室中进行的主要评估结果将包括客观的可测量步态参数和来自用户的临床调查反馈。Apto-Ankle 的成功设计和实施。使小腿肢体丧失的人能够在正常的社区环境中更轻松地行走，提高稳定性，并增加典型活动中行走的舒适度 Apto-Ankle 的商业应用是一种低成本的 K-2 和 K-3 轻型假肢踝关节。这鼓励小腿假肢使用者的行走、独立和生活质量。