A Wearable Pelvic Sensor Design for Drop Foot Treatment in Post-Stroke Patients
A Wearable Pelvic Sensor Design for Drop Foot Treatment in Post-Stroke Patients
复制标题
用于中风后患者足下垂治疗的可穿戴骨盆传感器设计
DOI：
10.1109/iembs.2007.4352667
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
P. Bonato
中科院分区：
文献类型：
--
作者：
D. O'Keeffe;D. Gates;P. Bonato
一种新型的可穿戴骨盆传感器步态分析设计的开发和评估在正常和病理步态。该设备是髋关节佩戴的陀螺仪和加速度计的融合体，其允许在行走周期期间监测骨盆的周期性垂直旋转，并使用该信息作为步态事件（例如脚跟着地（HS）和脚趾离地（TO））的预测器。对10名健康人（男5名，女5名）和10名偏瘫垂足患者的两个年龄和性别匹配组（40-65岁）的步态进行了检查。骨盆传感器方法与光学运动系统和脚踏开关相关，以评估该技术在检测步行和髋关节模式中的足部接触事件方面的有效性。数据分析显示，该设备能够根据记录的最大和最小骨盆角预测足部接触事件（TO：健康- 130 ms，偏瘫- 95 ms; HS：健康- 127 ms，偏瘫- 96 ms）。这种检测步态事件的能力将允许这种传感器设计用于简化下垂足刺激系统。所提出的方法还记录了骨盆的相对运动范围，从中可以获得有关步态对称性的有用信息，并用于动态监测或治疗干预分析。
A novel wearable pelvic sensor design for gait analysis was developed and evaluated in both normal and pathological gait. The device is a hip worn fusion of gyroscopes and accelerometers which allows for monitoring of the periodic vertical rotation of the pelvis during the walking cycle and uses this information as a predictor of gait events such as heel-strike (HS) and toe-off (TO). The gait pattern of two age and gender-matched groups (40-65 years) of 10 healthy subjects (5 male, 5 female) and 10 subjects with hemiplegic drop foot were examined. The pelvic sensor method was correlated against an optical motion system and footswitches, to evaluate the technique's efficacy at detecting foot contact events in walking and hip pattern. Data analysis showed the device was able to predict foot contact events from recorded maximum and minimum pelvic angle (TO: Healthy - 130 ms Hemiplegic - 95 ms; HS: Healthy - 127 ms, Hemiplegic- 96 ms). This ability to detect gait events would allow this sensor design to be used in simplifying drop foot stimulation systems. The proposed method also records the relative range of motion of the pelvis from which useful information on gait symmetry can be obtained and used in ambulatory monitoring or treatment intervention analysis.