Design Of Hand Rehabilitation Training System For Stroke Patients

In recent years,with the progress of medical treatment and the improvement of life quality,the survival rate of stroke patients has been steadily increasing every year,but there are still about 85% of patients with sequelae of hand dysfunction.Hand function is an indispensable part of human activities in production and life.More and more patients with hemiplegia caused by stroke require professional rehabilitation training,so the medical resources for hand function rehabilitation are increasingly strained.The function of finger tapping movement accounts for 80% of the whole hand function.In order to restore the basic living ability of patients in the late rehabilitation period of stroke as soon as possible,this study designed rehabilitation training equipment to restore the finger tapping movement.The main research contents are as follows:（1）Focusing on the finger movement of thumb and index finger,the anatomical structure of human hand was analyzed,and the physiological movement mechanism of finger tapping movement was understood from a deeper level.The finger tapping movement of normal hands were observed and recorded,and combine with the idea of anthropometry design,carry on the detailed extraction of static size and dynamic size.（2）Through the literature and field study,master the actual rehabilitation training,professional physicians to control the range of motion angles and the degree of freedom of each joint of thumb and index finger during finger movement.The trajectory extraction experiment was designed according to the angular velocity of finger motion,the range of finger motion,and the flexion and extension of finger in the real scene of finger movement rehabilitation training.The experimental platform and the wrist and palm support were set up in accordance with ergonomics.And in the experimental design,the movement speed,the initial position of the finger,the selection of the location of the sampling point and other parameters were standardized Settings,in order to control the variables,make the experimental results scientific,and make the experimental design has repeatability and portability.（3）According to the trajectory parameters extracted from the experiment,the MATLAB program was written to perform quadratic polynomial fitting on the scatter data,and then the plane fitting curve was projected into the THREE-DIMENSIONAL coordinate system to obtain the spatial fitting curve of the motion trajectory.The space curve parameters were moved to the engineering modeling software to build the orbit parameter model.（4）Structural design and industrial design of contralateral exercise rehabilitation training equipment.The structure of the wrist and palm support in rehabilitation equipment was designed,and the standard parts were selected for assembly and experimental adjustment.The finger sleeve structure of index finger and thumb is designed to better guide patients to complete training movements,and also play a safe function to prevent sports injuries.Then carry on the CMF factor analysis to the equipment,and consider its ergonomics aspect design rationality.In this study,a hand-assisted rehabilitation training equipment specially for the finger tapping movement was produced.The equipment restored the movement track of the finger tapping movement of the normal hand well,provided an auxiliary rehabilitation equipment for the patients in the later stage of rehabilitation of hand dysfunction to complete training independently,and also alleviated the current shortage of rehabilitation medical treatment to a certain extent.The experimental design idea of track extraction experiment proposed in the research process also provides a new idea and design path for the design of hand rehabilitation training equipment.