Development of a portable microcomputer-controlled Functional Electrical Stimulation (FES) system for the paralyzed upper extermities

开发用于瘫痪上肢的便携式微机控制功能性电刺激（FES）系统

• 批准号: 61890007
• 负责人: HANDA Yasunobu
• 金额: $ 4.67万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61890007/
• 关键词: Functional electrical stimulation; FES; Upper extremity; Spinal cord injuty; Quadriplegia; Cerebrovascular disorders; Hemiplegia; 筋電図

A prograble multi-channel FES system was developed in order to restore the motor dunction of the paralyzed upper extermities in stroke and spinal cord injury patients. The system consisted of a 8 bit microcomputer and 3 channels of A/D and 16 channels of D/A converters. In addition, a stimulation data crteating system (SDC system) consisting of a personal computer (NEC LT-50) was also developed. Standard stimulation data for controlling the paralyzed upper or lower extrmities were created from integrated EMG data during motion for activities of daily living in normal subjects and were stored in the memory of SDC system. Stimulation data for each patient were automatically created by inputting the maximum and threshold stimulating voltages of indevidual muscles to the standard stimulation data through a key board of SDV system and were sent to the memoty of the portable FES system. This method realized versatile usage of the portable FES system for restoration of motor function in various types of paralysis of the extremities. Furthermore, a very complicated multi-joint system with many degress of feedom such as the paralyzed upper extermities 14 C4 quadriplegics could be easily controlled biwh high reliability by this system.This portable FES system was applied to the paralyzed upper extremities of two C4 quadriplegic patients. Inspiration and expiration of the patient were utilized as a volitional control command for selection and execution of stimulation data for controlling motions of the upper extremities. By using this system, patients could perform some kinds of activities of daily living by the upper extremities such as drinking a canned juice, brushing their teeth, make-up her face and so on. Thus, is was founs that this portable FES system which we developed was s powerfull means for restoring motor function of the paralyzed upper extremities induced by upper motor nueron disorders.

为了恢复中风和脊髓损伤患者瘫痪上肢的运动功能，研制了一种可编程的多通道功能电刺激系统。该系统由8位微型计算机、3路A/D和16路D/A转换器组成。此外，还研制了由NEC LT-50计算机组成的刺激数据采集系统(SDC系统)。由正常受试者日常生活活动的综合肌电数据生成控制瘫痪的上、下伸的标准刺激数据，并存储在SDC系统的存储器中。每个患者的刺激数据通过SDV系统的键盘将个体肌肉的最大刺激电压和阈值刺激电压输入标准刺激数据自动生成，并发送到便携式FES系统的存储器中。该方法实现了便携式FES系统对不同类型肢体瘫痪患者运动功能恢复的通用性。此外，对于上肢瘫痪的14个C4四肢瘫痪患者这样一个复杂的多关节多关节系统，该系统具有较高的可靠性，易于控制。患者的吸气和呼气被用作选择和执行刺激数据的意志控制命令，以控制上肢的运动。使用该系统，患者可以通过上肢进行一些日常生活活动，如喝罐装果汁、刷牙、化妆等。由此可见，我们研制的便携式FES系统是S恢复上肢运动功能的有力手段。

项目成果

N.Hoshimiya;T.Izumi;A.Fujii;R.Futami;T.Ifukube and Y.handa: Proc 8th Conf IEEE/EMBS. 1. 661-663 (1986)

N.Hoshimiya;T.Izumi;A.Fujii;R.Futami;T.Ifukube 和 Y.handa：Proc 8th Conf IEEE/EMBS。

Y.Handa and N.Hoshimiya: Medical Progress through Techology. 12. 51-63 (1987)

Y.Handa 和 N.Hoshimiya：通过技术实现医学进步。

H. Fukamachi, Y. Handa, A. Naito, N. Ichie, M. Yajima, K. Ushikoshi M. Tsuchiya, N. Matsushita and N. Hoshimiya: "Impreverment of finger moverment by intrinsic muscles stimulation of the hand." Proc 9th Ann Cong IEEE/EMBS. 1. 361-362 (1987)

H. Fukamachi、Y. Handa、A. Naito、N. Ichie、M. Yajima、K. Ushikoshi M. Tsuchiya、N. Matsushita 和 N. Hoshimiya：“通过手部内在肌肉刺激来改善手指运动。”

Y.Handa;A.Naito;M.Ichie;T.Handa;N.Matsushita and N.Hoshimiya: ADVANCES IN EXTERNAL CONTROL OF HUMAN EXTREMITIES. 9. 329-337 (1987)

Y.Handa；A.Naito；M.Ichie；T.Handa；N.Matsushita 和 N.Hoshimiya：人类四肢外部控制的进展。

M. Ichie, Y. Handa, A. Naito, N. Matsushita and N. Hosimiya: "EMG analysis of the thumb and its applivation to FNS." Rpoc 8th Ann Conf IEEE/EMBS. 1. 538-540 (1986)

M. Ichie、Y. Handa、A. Naito、N. Matsushita 和 N. Hosimiya：“拇指的肌电图分析及其在 FNS 中的应用。”