A regenerative peripheral nerve interface allows real-time control of an artificial hand in upper limb amputees.

A regenerative peripheral nerve interface allows real-time control of an artificial hand in upper limb amputees.
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DOI:
10.1126/scitranslmed.aay2857
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发表时间:
2020-03-04
影响因子:
17.1
通讯作者:
Cederna PS
Cederna PS
中科院分区:
医学1区
文献类型:
--
作者:
Vu PP;Vaskov AK;Irwin ZT;Henning PT;Lueders DR;Laidlaw AT;Davis AJ;Nu CS;Gates DH;Gillespie RB;Kemp SWP;Kung TA;Chestek CA;Cederna PS

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周围神经为神经假体装置提供了一个有前途的运动控制信号源。不幸的是,目前的周围神经接口的临床实用性受到信号幅度和稳定性的限制。在这里,我们表明,再生周围神经接口(RPNI)作为一个生物稳定的生物放大器的传出运动动作电位与长期稳定的上肢截肢者。RPNI的超声评估显示,在幻指屈曲过程中有明显的收缩,证实了2例患者的RPNI功能性神经支配。另外两名患者的RPNI产生了具有大信噪比的肌电图信号。使用这些RPNI信号,受试者成功地实时控制了手部假体长达300天,而无需重新校准控制算法。RPNI在增强上肢丧失患者的假肢控制方面显示出潜力。
Peripheral nerves provide a promising source of motor control signals for neuroprosthetic devices. Unfortunately, the clinical utility of current peripheral nerve interfaces is limited by signal amplitude and stability. Here, we showed that the regenerative peripheral nerve interface (RPNI) serves as a biologically stable bioamplifier of efferent motor action potentials with long-term stability in upper limb amputees. Ultrasound assessments of RPNIs revealed prominent contractions during phantom finger flexion, confirming functional reinnervation of the RPNIs in two patients. The RPNIs in two additional patients produced electromyography signals with large signal-to-noise ratios. Using these RPNI signals, subjects successfully controlled a hand prosthesis in real-time up to 300 days without control algorithm recalibration. RPNIs show potential in enhancing prosthesis control for people with upper limb loss.
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