Michael Rose, Olivia Carnochan, Rhys Gamlin, Liam Tomlinson, A. Jafari, Appolinaire C. Etoundi
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This research aims to design and develop a prosthetic limb socket offering enhanced comfort, flexibility, and user control i.e. a robotic socket (RS). A comprehensive literature review was conducted to assess existing interactive sockets and sensory systems, focusing on their performance and specifications. The methodology employed in this study (Phase 1) involved the design and testing of small-scale circuits which will later (Phase 2) evolve into a more complex and up-scaled system. The prototype developed in this study features a plastic bottle equipped with a pressure valve, simulating residual limb swelling by modulating the internal pressure. A 3D-printed button and locking wire serve as a rigid socket, preventing unchecked bottle expansion. A motor integrated into the system modulates hoop tension on the conceptual socket, ensuring user-specific pressure regulation. 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引用次数: 0
摘要
对于许多截肢者来说,尤其是膝上截肢者,其软组织承受着巨大的重量[1]、[2],假肢套筒的舒适性仍然是一个重大挑战。造成不适的主要原因通常是残肢肿胀,而传统的假肢套筒无法适应这一因素[3]。骨结合手术是一种独特的方法,可在移除假肢套的同时连接假肢和残肢,被认为是提高舒适度和生活质量的最佳解决方案,但其可及性仍然有限[4]。因此,本研究的动机是探索开发一种自动致动和可调节的插座。本研究旨在设计和开发一种可提高舒适度、灵活性和用户控制能力的义肢插座,即机器人插座(RS)。我们进行了全面的文献综述,以评估现有的交互式义肢套筒和传感系统,重点关注其性能和规格。本研究(第 1 阶段)采用的方法包括设计和测试小规模电路,随后(第 2 阶段)将发展成更复杂和更大规模的系统。本研究开发的原型是一个装有压力阀的塑料瓶,通过调节内部压力模拟残肢肿胀。3D打印的按钮和锁线可作为刚性插座,防止瓶子肆意膨胀。集成在系统中的电机可调节概念插座上的箍张力,确保用户特定的压力调节。该系统使用 Raspberry Pi 开发,可根据用户定义的设定点和瓶子压力读数管理电机波动。初步测试结果表明,电机能根据压力传感器的读数有效调节缆绳张力,效果良好。原型中塑料瓶的使用使这一设计既经济又方便。
The Robotic Socket: A Robotic Design and Biomimetic Application of an Auto-Adjusting Prosthetic Socket Prototype for Above-Knee Amputees
Comfort in prosthetic sockets remains a significant challenge for many amputees, particularly for above-knee amputees bearing substantial weight on their soft tissue [1], [2]. The predominant source of discomfort often originates from swelling of the residual limb, a factor traditional prosthetic sockets fail to accommodate [3]. While Osseointegration surgery, a unique method to connect prosthetics and residual limbs while removing the socket, is recognized as a superior solution for enhancing comfort and quality of life, its accessibility remains limited [4]. Hence, the motivation for this study is to explore the development of an automatically actuating and adjustable socket. This research aims to design and develop a prosthetic limb socket offering enhanced comfort, flexibility, and user control i.e. a robotic socket (RS). A comprehensive literature review was conducted to assess existing interactive sockets and sensory systems, focusing on their performance and specifications. The methodology employed in this study (Phase 1) involved the design and testing of small-scale circuits which will later (Phase 2) evolve into a more complex and up-scaled system. The prototype developed in this study features a plastic bottle equipped with a pressure valve, simulating residual limb swelling by modulating the internal pressure. A 3D-printed button and locking wire serve as a rigid socket, preventing unchecked bottle expansion. A motor integrated into the system modulates hoop tension on the conceptual socket, ensuring user-specific pressure regulation. The system was developed using a Raspberry Pi to manage motor fluctuations based on user-defined set points and bottle pressure readings. Preliminary testing demonstrated promising results, with the motor effectively adjusting the cable tension in response to the pressure sensor’s readings. The use of a plastic bottle in the prototype makes this design cost-effective and accessible.