Schofield Jonathon S, Schoepp Katherine R, Stobbe Michael, Marasco Paul D, Hebert Jacqueline S
Department of Biomedical Engineering, Lerner Research Institute, Cleveland, OH, USA.
Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, Canada.
Prosthet Orthot Int. 2019 Oct;43(5):564-567. doi: 10.1177/0309364619836353. Epub 2019 Mar 29.
Although upper limb myoelectric prostheses can offer improved functionality and dexterity over body-powered systems, abandonment rates remain high. User dissatisfaction in comfort and control are among the top contributors. The design of the prosthetic socket must be comfortable, while maintaining contact of control electrodes with the residual limb throughout the day. We present a myoelectric socket design that provides user-adjustable compression over electrode control sites to promote consistent control, while maintaining comfort and fit.
A cable tensioning system was threaded through a series of paneled windows in the socket wall over electrode sites. Adjusting tension provided tuning of electrode contact.
A case study of a single transhumeral prosthetic user with a follow-up interview 11 months post delivery suggests that our adjustable design has the potential to address control and comfort challenges, critical factors in myoelectric prosthetic use, and abandonment.
Achieving consistent electrode contact with muscle control sites in traditional rigid sockets is a critical challenge for myoelectric prostheses. We present a unique solution via user-adjustable electrode contacts built into the socket.
尽管上肢肌电假肢相较于身体驱动系统能提供更好的功能和灵活性，但弃用率仍然很高。用户对舒适度和控制方面的不满是主要原因之一。假肢接受腔的设计必须舒适，同时要确保控制电极一整天都与残肢保持接触。我们展示了一种肌电接受腔设计，它能在电极控制部位提供用户可调节的压力，以促进稳定控制，同时保持舒适度和贴合度。
一个电缆张紧系统穿过接受腔壁上位于电极部位上方的一系列嵌板窗口。通过调节张力可以调整电极接触。
对一名单例经肱骨截肢假肢使用者的案例研究及产后11个月的随访访谈表明，我们的可调节设计有潜力解决控制和舒适度方面的挑战，这些是肌电假肢使用及弃用的关键因素。
在传统刚性接受腔中实现电极与肌肉控制部位的稳定接触对肌电假肢来说是一项关键挑战。我们通过在接受腔中内置用户可调节的电极接触提供了一个独特的解决方案。
