PDF(Pubmed)
Abstract：
It is essential that people with limb amputation maintain proper prosthetic socket fit to prevent injury. Monitoring and adjusting socket fit, for example by removing the prosthesis to add prosthetic socks, is burdensome and can adversely affect users\' function and quality-of-life. This study presents results from take-home testing of a motor-driven adaptive socket that automatically adjusted socket size during walking. A socket fit metric was calculated from inductive sensor measurements of the distance between the elastomeric liner surrounding the residual limb and the socket\'s inner surface. A proportional-integral controller was implemented to adjust socket size. When tested on 12 participants with transtibial amputation, the controller was active a mean of 68% of the walking time. In general, participants who walked more than 20 min/day demonstrated greater activity, less doff time, and fewer manual socket size adjustments for the adaptive socket compared with a locked non-adjustable socket and a motor-driven socket that participants adjusted with a smartphone application. Nine of 12 participants reported that they would use a motor-driven adjustable socket if it were available as it would limit their socket fit issues. The size and weight of the adaptive socket were considered the most important variables to improve.
摘要：
截肢患者必须保持适当的假肢接受腔配合以防止受伤。监控和调整插座配合，例如，通过移除假体来添加假肢袜子，是繁重的，会对用户的功能和生活质量产生不利影响。这项研究提供了对电机驱动的自适应插座进行带回家测试的结果，该插座可在步行过程中自动调整插座尺寸。根据感应传感器测量残肢周围的弹性衬垫与插座内表面之间的距离,计算插座配合度。实现了比例积分控制器来调整插座尺寸。对12名经胫骨截肢的参与者进行测试时，控制者在平均68%的步行时间内处于活动状态。总的来说,每天行走超过20分钟的参与者表现出更大的活动，更少的doff时间，与参与者通过智能手机应用进行调整的锁定不可调插座和电机驱动插座相比，自适应插座的手动插座尺寸调整较少。12名参与者中有9名报告说，如果有的话，他们将使用电机驱动的可调节插座，因为这会限制他们的插座安装问题。自适应插座的大小和重量被认为是需要改进的最重要的变量。
