Evaluation method and evaluation device for adaptation effect of artificial limb

A prosthetic and gait technology, applied in prosthesis, medical science, sensors, etc., can solve problems such as false positives, achieve the effect of improving accuracy, comprehensive and reasonable evaluation standards, and eliminating gait errors

Pending Publication Date: 2020-09-08
国家康复辅具研究中心
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the gait of a prosthetic wearer contains different kinematic and dynamic characteristics, which are often reflected in multiple gait parameters, so the scheme of using a single index to measure the effect of prosthetic fitting is likely to produce false evaluation results. positive

Method used

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  • Evaluation method and evaluation device for adaptation effect of artificial limb
  • Evaluation method and evaluation device for adaptation effect of artificial limb
  • Evaluation method and evaluation device for adaptation effect of artificial limb

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This embodiment provides a method for evaluating the fitting effect of a prosthetic limb, such as figure 1 shown, including the following steps:

[0055] S100: Collect gait kinematic parameters, gait dynamics parameters and electromyography parameters of the prosthetic wearer in multiple gait cycles.

[0056] In this step, the wearer of the prosthesis can walk a certain distance on a flat ground, a ramp or a step to collect various parameters generated during the walking process. The plurality of gait cycles in this example include gait cycles for the entire distance the prosthetic wearer has walked during the entire testing process. The gait kinematics parameters are periodic, and the time course from the heel on one side of the body touching the ground to the heel on this side touching the ground again is called the gait cycle. Specifically, the gait kinematic parameters include spatial parameters and temporal parameters within a gait cycle. For example, pace refer...

Embodiment 2

[0114] This embodiment provides a device 300 for evaluating the fitting effect of a prosthetic limb, such as image 3 As shown, it includes a parameter acquisition unit 310 , an optimal gait determination unit 320 , a feature acquisition unit 330 and a scoring unit 340 .

[0115] in:

[0116] The parameter collection unit 310 is adapted to collect the gait kinematics parameters, gait dynamics parameters and myoelectric parameters of the prosthetic wearer in multiple gait cycles, wherein the gait kinematics parameters include pace, cadence, stride Length, stride length, gait cycle, hip angle, knee angle and ankle angle, the gait dynamics parameters include ground reaction force, hip moment, knee moment and ankle moment.

[0117] The optimal stroke determination unit 320 is adapted to determine an optimal stroke from the plurality of gait cycles based on the gait kinematics information, wherein the optimal stroke includes N consecutive gait cycles;

[0118] The feature acquisi...

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Abstract

The invention provides an assessment method and assessment device for the adaptation effect of an artificial limb. The method comprises the following steps of: collecting gait kinematics parameters, gait dynamics parameters and myoelectricity parameters of an artificial limb wearer in a plurality of gait periods, wherein the gait kinematics parameters comprise the step speed, the step frequency, the step length, the stride, the gait period, the hip joint angle, the knee joint angle and the ankle joint angle, and the gait kinematics parameters comprise the ground reaction force, the hip joint torque, the knee joint torque and the ankle joint torque; determining an optimal stroke from the plurality of gait periods based on the gait kinematics information; obtaining gait characteristic parameters corresponding to the optimal stroke, wherein the gait characteristic parameters comprise multiple index parameters selected from the gait kinematics parameters, the gait dynamics parameters and the myoelectricity parameters; and inputting the gait characteristic parameters into a neural network model to output a score about the adaptation effect of the artificial limb.

Description

technical field [0001] The invention relates to the technical field of rehabilitation aids, in particular to an evaluation method and an evaluation device for the fitting effect of a prosthetic limb. Background technique [0002] Prosthesis is an indispensable assistive device to ensure the integration of disabled people into normal life. Especially for people with lower limb disabilities, prosthetics can not only help the prosthetic wearer to achieve autonomous walking, but also when the fit between the prosthesis and the wearer is high enough, they can walk like normal people, thereby effectively improving the quality of life of the disabled. [0003] In the prior art, the evaluation method for the fitting effect of the prosthesis is often relatively simple, and cannot fully reflect the comprehensive fitting effect between the prosthesis and the wearer of the prosthesis. For example, some scholars have proposed a scheme to evaluate the prosthesis effect according to the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/11A61B5/0488A61F2/76
CPCA61B5/112A61F2002/7695
Inventor 宋亮纪婷婷陶春静杨洁萌杨荣姜恺宁
Owner 国家康复辅具研究中心
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