TW201828240A - Rehabilitation information evaluation system - Google Patents

Abstract

With the improvement of medical technology, elder population rapidly increase and serious ill patients can survive, but a lot of physically disordered patients remained. The development of rehabilitation medication is focused on the reduction of function defect, and to improve life function and independence. However, rehabilitation is a long period and require lots of personal and material resources because the patient need to go to hospital for the evaluation and the expense on therapists is high. Therefore, home rehabilitation is crucial. But even until now, remote rehabilitation still require the 1 on 1 video conference system or the description on the project and frequency of rehabilitation from the patient afterward. These methods fail to reduce the manpower requirement of therapists and lack of objective evaluation on the patient's condition. Thus, we designed a new device by employing inertial measurement units (IMU) and an ankle foot orthosis (AFO) named AFO-IMU module combined with cell phone application using specific algorithm, in order to evaluate patient's activity immediately and record the time and frequency of patient's rehabilitation.

Description

 Rehabilitation information evaluation system  

The invention relates to a rehabilitation information evaluation system for integrating an auxiliary device, an inertial sensor and a mobile phone application, in particular to a rehabilitation evaluation device for correcting the corrective action of a rehabilitation person during rehabilitation.

Ultrasonic systems are released using RF transceivers and use Ultrasound receivers as receiving actions, taking into account the external influences in the home, with multi-party appliances in the home. The slight noise generated will cause the distortion of the tracking to expand, and it is involved in many noises and is not easy to remove.

The magnetic system uses the receiver to capture the strength of the low-frequency magnetic field. This magnetic field is emitted by the marker. In use, it is necessary to construct six to twelve or more receivers to track the motion. . In the choice of environment, it is necessary to take into account the local magnetic field factors and the related metal may cause interference in the measurement method, and this interference is very likely to occur in the home (metal in the wall, or related appliances in the home will affect The direction of the magnetic field).

There are two choices for the Vision (optical) system. One is the passive mark (Retroreflective), the other is the active mark (Light-emitting diode), and it is used in the environment. There are very few restrictions on it (the use of space is less restrictive but it is still not possible at home), but it requires some action (action tracking). Vision-based Recognition is an extension of the Vision (optical) system. Considering that the camera directly captures image analysis as an identification system for motion analysis, the main processing is divided into points. For three stages. Motion analysis understands the structure of the human body during exercise, uses the camera to track the grabbing motion, and then confirms the human activity sequence. The extraction method first uses a simple low-level feature as the main point of extraction, which is mainly to divide the human muscle part and use it to determine the combination of the muscle and the action, and then from the two-dimensional image. The motion prediction is derived into the three-dimensional image motion, and the joint strength when deriving the physical content is established, and the interlocking skeleton is established as a reference, and then combined with other derived features to simulate the motion or activity of the human body. It is the most commonly used method for remote rehabilitation, but considering the cost, space and condition tracking, a large amount of visual identification data is difficult to track for a long time, and when assessing the effect of remote rehabilitation, it is still necessary One-on-one guidance of the patient's actions by the physician does not reduce the cost of personnel costs.

Inertial Sensing does not need to be limited by the site on the device. However, since the position cannot be confirmed, the positional distortion may occur due to the deviation of the integral error during calculation. Although it is simple and convenient to use and inexpensive to purchase, It is not easy to judge.

The problem to be solved: the effective analysis of dynamic analysis, combined with long-term tracking can save a lot of labor costs, the program to help make simple diagnosis, so that users can understand the correctness of rehabilitation actions on the mobile device, this aspect can be reduced The human cost of the physician is simple and convenient in terms of calculation and feasibility. And in order for the rehabilitation person to have no need to add too much burden during rehabilitation, an effective motion tracking must be passive, wireless, small, and inconspicuous in an unconstrained environment. The construction of such a tracking system requires the development of a micro-institution placed above the patient's limbs to meet this requirement, taking into account the behavior of rehabilitation and the ease of implementation in the home environment.

The technical means of solving the problem: designing a rehabilitation information evaluation system, which is combined with an inertial sensor and a device for supporting the auxiliary device, and an electronic device is loaded into an application, including using an inertial sensor, which can be used Fixed to the footrest accessory, measuring the value of the knee rehabilitation action, the inertial sensor transmitting the data to the mobile phone application using a proprietary communication protocol, the application can read the inertial sensor measurement The numerical value is then calculated mathematically to assess the condition of the knee joint rehabilitation action and to alert the rehabilitation person with a warning message when the rehabilitation action is incorrect. After processing, the results are transferred to a specific VPN through the LTE/5G pipeline through the telecommunications room, and then stored in the cloud room.

The invention utilizes the micro-electromechanical inertial sensor, measures the relevant threshold data, and uses mathematical calculation to carry out the feature extraction and analysis of the rehabilitation action, which can be effectively observed and compared with the previous method using the inertial sensor. Determining the correctness of the rehabilitation action, and by linking to the application on the mobile device, the application enables the rehabilitation person to perform remote rehabilitation at home or elsewhere without the physician and the rehabilitation teacher, and Consider different states of the rehabilitator, add different grading conditions to achieve better evaluation, and use the mobile device to understand the correctness of the action and record the frequency of rehabilitation.

The ankle assist device that can be loaded with the inertial sensor is fixed on the lower leg and fixes the ankle joint activity.

The value of the knee joint rehabilitation action is measured by the inertial sensor, and is connected to the mobile device in which the application is installed, the value pre-stored by the application (including the standard for evaluating the movement of the rehabilitation person, etc.) and mathematically calculated and analyzed. Evaluate the condition of the knee rehabilitation exercise and alert the rehabilitation person with a warning message when the rehabilitation action does not meet the standard.

Claims (4)

 A rehabilitation information evaluation system, which is combined with an inertial sensor and a device for assisting an auxiliary device, and an electronic device is loaded into an application, comprising the following steps: (1) the inertial sensor can be fixed to On the squat assistive device, the value of the knee joint rehabilitation action is measured. (2) The ankle assistive device is fixed to the leg to match the activity of the ankle joint. (3) After receiving the information of the step (1) knee rehabilitation operation, the inertial sensor can transmit the result information to the electronic device. (4) After receiving the result information of step (3), the electronic device can calculate and analyze mathematically through the application with the parameter to determine whether the user's ankle joint activity is correct or not.    The parameters of step (4) of claim 1 include criteria for evaluating user actions.    The electronic device of step (3) of claim 1 may display a warning message to remind the user when the application calculates and analyzes that the user's activity is not in compliance with the standard.    A computer program product, after loading an electronic device, can perform the evaluation system described in claims 1 to 3.