Programmable electrical nerve stimulator for maximal contraction with minimal energy delivery
Date Issued
2014
Date
2014
Author(s)
Ho, Wei-Yi
Abstract
Patients with spinal cord injuries lose their motor control and cannot transfer from sit to stand motion, which is of great importance for mobility and independence in daily life. To assist transfer, maximal contraction of lower limb muscles are necessary and can be achieved by peripheral nerve stimulation. However, the relation between stimulating parameters and force of contraction is not known. In our research, a programmable electrical nerve stimulator with a bi-phasic, constant-current output and a miniaturized force measurement device are implemented. Parameters such as current amplitude, frequency, burst duration, and pulse duration can be adjusted arbitrarily. In animal experiment of bullfrogs, a set of stimulating parameters, 1 Hz, 0.327 mA, 6 pulses with pulse duration of 1 ms, and 448.54 μJ, is found to achieve maximal contraction of gastrocnemius with minimal energy delivery.
Subjects
脊髓損傷
坐到站
周邊神經電刺激
最大收縮
最小能量傳遞
Type
thesis
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ntu-103-R01548005-1.pdf
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