Wrist and finger rehabilitation trainer capable of adjusting bending angle of fingers

Abstract

The invention provides a wrist and finger rehabilitation trainer capable of adjusting bending angle of fingers. The wrist and finger rehabilitation trainer capable of adjusting bending angle of fingers comprises an arm connecting frame, a palm connecting frame and a finger fixing device. Two wrist connecting plates fixed on the upper and lower sides of the arm connecting frame are rotatably connected with the rear end of the palm connecting frame. A servo motor is fixed on the arm connecting frame through a motor frame. A drive rod and a second pulley are fixed on a output shaft of the servomotor. The second pulley drives a first pulley through a belt. The first pulley fixedly penetrates through a rotating shaft. The rotating shaft fixes the palm connecting frame. A sliding rod is installed on the drive rod in a sliding mode. And the position of the sliding rod is fixed. The drive rod is connected with the finger fixing device through three crank connecting rod mechanisms in series connection. An increase or decrease in bending degree of four fingers relative to wrist movement amplitude is realized by adjusting the fixing position of the sliding rod on the drive rod, so that thewrist and finger rehabilitation trainer is suitable for different patients or patients at different rehabilitation stages.

Description

1. Technical field [0001] The invention relates to a wrist and finger rehabilitation training device, in particular to a wrist and finger rehabilitation training device with adjustable finger bending angle, which belongs to the field of rehabilitation medical equipment. 2. Background technology [0002] my country is a country with a large population. Every year, there are millions of patients with stroke, hemiplegia, traumatic brain injury, and hand injury, and some of the population is in their prime. Improving the quality of life of patients after the onset has attracted attention from all walks of life. Rehabilitation training is an important It is an important means of patient rehabilitation measures. At present, the rehabilitation training equipment invested by medical institutions is increasing year by year. [0003] However, the current finger or wrist rehabilitation training device has a single function, and can only realize a single rehabilitation function of the fi...

AI Technical Summary

Problems solved by technology

[0003] However, the current finger or wrist rehabilitation training device has a single function, and can only realize a single rehabilitation function of the finger or wrist. Even if most of the training devices that can realize the wrist and finger rehabilitation function are driven by more than two motors, the control mechanism is also relatively complicated, and the cost is low. Higher, poor safety; or the range of motion of the wrist and finger joints of the wrist and finger rehabilitation training device cannot be adjusted, which is not suitable for some patients; or the drive motor of the wrist and finger rehabilitation training device is located at the palm position, and the drive motor cannot be Rear position to the forearm increases the mass of the front end of the rehabilitation training device; or although the finger rehabilitation training device adopts a link mechanism, it usually needs to use an inverse four-bar linkage or an anti-parallel four-bar linkage mechanism, which needs to be connected with the machine. The frame is connected by multiple supporting hinges, and the swing speed of the rods of the reverse four-bar linkage or reverse parallel four-bar linkage mechanism changes very unevenly, which seriously affects the comfort of the patient's rehabilitation training

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