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Foot drop walking aid control method based on angular speed signals

A control method and angular velocity technology, which is applied in medical science, artificial respiration, sensors, etc., can solve problems such as stimulation blind areas, secondary falls, trapezoidal envelope redundant stimulation, etc., to solve stimulation blind areas and adjust electrical stimulation intensity in real time , to resolve the effect of redundant stimuli

Inactive Publication Date: 2018-01-19
FUZHOU UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a control method for a foot drop walker based on an angular velocity signal, which greatly reduces the risk of a secondary fall of the patient caused by a full or no stimulation envelope, and also solves the problem of trapezoidal envelope There are problems of redundant stimulation and stimulation blind spots in the line, and the stimulation intensity is adjusted according to the real-time gait information of the patient's walking, that is, the angular velocity information of the patient is used to adjust the output electrical stimulation intensity in real time, so that the patient with foot drop can walk to the greatest extent. gait close to that of a healthy person

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  • Foot drop walking aid control method based on angular speed signals
  • Foot drop walking aid control method based on angular speed signals

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] A control method of a foot drop walker based on an angular velocity signal, comprising the following steps:

[0031] Step 1: The patient walks after wearing the foot drop walking aid. The foot drop walking aid includes a signal acquisition system for real-time acquisition of the patient's ankle joint angular velocity signal;

[0032] Step 2: the foot drop walker includes a controller, and the controller receives the ankle joint angular velocity signal collected by the signal collection system;

[0033] Step 3: The controller outputs different functional electrical stimulation intensity signals according to the received real-time ankle joint angular velocity signals to stimulate the tibialis anterior muscle of the patient to generate dorsiflexion.

[0034] In an embodiment of the present invention, the controller includes an LSTM neural network m...

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Abstract

The invention discloses a foot drop walking aid control method based on angular speed signals. The method comprises the following steps that a patient walks after wearing a foot drop walking aid, wherein the foot drop walking aid comprises a signal collecting system for collecting ankle joint angular speed signals of the patient in real time; the foot drop walking aid comprises a controller, the controller outputs different functional electric stimulus intensity signals according to the real-time ankle joint angular speed signals of the patient, and the anterior tibial muscle of the patient isstimulated to generate dorsal flexure. The shrinkage characteristics of the anterior tibial muscle of the patient during walking are consistent with those of a healthy person, and therefore the gaitof the patient is close to the normal gait to the maximum extent.

Description

technical field [0001] The invention relates to a control method of a foot drop walking aid device based on an angular velocity signal. Background technique [0002] In the products currently on the market or published literature studies, functional electrical stimulation is used for the rehabilitation of patients with foot drop. There are three common ways to adjust the intensity of electrical stimulation: 1. The output of electrical stimulation is all or no stimulation package. Coil. That is, the output stimulus intensity is a fixed value, the pulse width and stimulus amplitude are both constant, and the stimulus intensity is switched back and forth between maximum stimulation and no stimulation. Under this kind of stimulation envelope, the change of stimulation intensity is instantaneous. This kind of steep change will cause foot drop patients to lift their toes too fast when using it, resulting in unstable center of gravity and easy to increase the risk of falling. Lea...

Claims

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Application Information

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IPC IPC(8): A61N1/36A61B5/11A61B5/0488
Inventor 李玉榕杜民陈建国杨徐高一沅
Owner FUZHOU UNIV