Dynamic hand assistive device

Abstract

The invention discloses a dynamic hand assistive device comprising: a wrist unit connected to a thumb unit, an index finger unit, a middle finger unit, a ring finger unit and a small finger unit, wherein the index finger unit, the middle finger unit, the ring finger unit and the small finger unit include a linearly elastic material, and the wrist unit, the thumb unit and the index finger unit areconnected by three linkages.

Description

technical field [0001] The invention relates to a hand dynamic aid, in particular to a hand dynamic aid including a three-link design. Background technique [0002] According to statistics from the health department, cerebrovascular disease has become the third among the top ten causes of death. For stroke victims, good physical therapy can improve life and speed recovery. However, for patients who have not yet recovered to Brunnstrom's (Brunnstrom) stage four or above, or who cannot open their hands voluntarily due to the weakness of the extensor muscles of the hands, most of the current clinical treatments rely on the manual induction skills of occupational therapists to make them Patients passively open their hands to complete rehabilitation activities, but this rehabilitation method consumes a lot of mental and physical strength of the occupational therapist, thus affecting the rehabilitation effect of the patient and the stability of the rehabilitation process. [000...

AI Technical Summary

Problems solved by technology

However, for patients who have not yet recovered to Brunnstrom's (Brunnstrom) stage four or above, or who cannot open their hands voluntarily due to the weakness of the extensor muscles of the hands, most of the current clinical treatments rely on the manual induction skills of occupational therapists to make them Patients passively open their hands to complete rehabilitation activities, but this rehabilitation method consumes a lot of mental and physical strength of the occupational therapist, thus affecting the rehabilitation effect of the patient and the stability of the rehabilitation process

[0003] Most of the existing hand grasping dynamic aids have the following disadvantages: they cannot adjust the size of the aids according to different users, they do not conform to the trajectory and pattern of common grasping, and the fingertips covering the fingers reduce the tactile feedback. No good rehabilitation aids

[0004] The application number is 100209691, and the Taiwan patent document titled dynamic hand function trainer discloses an auxiliary device, which includes a forearm support, which is pasted with a hook and loop to fix the support to the forearm, and is driven by a spring and a buckle. Fingers, but the action in this case is a rough grip due to the spring linear relationship of the thumb, which does not conform to the normal finger grip

In addition, the current commercially available SaeboFlex (manufactured by Saebo Company) dynamic aids mainly aims to use the resilience of the spring to open the fingers of the affected hand and perform daily life training, but it is similar to the problem in the previous case. for a rougher ball grip

At present, the main grasping modes of human daily life are palm grasping and three-point finger pulp grasping. According to the research, the current dynamic assistive devices that assist such movements have the following disadvantages: they do not conform to the trajectory and mode of common grasping, Expensive, bulky, finger cots that wrap around the fingers thus reducing tactile feedback...etc

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