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Myoelectric knee joint

A knee joint and electromyography technology, applied in the field of electromyography knee joints, can solve the problems of no extension, no support, etc., and achieve the effect of smooth oil passage.

Inactive Publication Date: 2010-08-18
黄元清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, there is no supporting function in the knee-bending state, and there is no stretching and stretching function.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] When the disabled person equipped with this prosthetic was walking on a flat road, the sensor (myoelectric sensor) 7 sent a signal A to the control module 9, and after the discrimination of the program in the control module, the control system controlled the motor not to run. The joint starts the hydraulic mechanical operation mode on the ground, and the joint operation is driven by the strength of the residual limbs of the human body and the oil circuit control maintains the stability of the joint to achieve the purpose of saving electricity.

[0023] At this moment, the speed reducer can be passively rotated under the condition that the motor is not working, so as not to prevent the rotation of the joint.

Embodiment 2

[0025] When the disabled need to go up the stairs, the sensor (myoelectric sensor) 7 will send a signal B to the control module 9, and through the discrimination of the program in the control module 9, the operation of the motor 10 will be controlled, and the rotary motion will be decelerated by the reducer 6 Transferred to the crank 5, the rotational movement of the crank 5 will drive the small hydraulic cylinder piston rod 4 and the small hydraulic cylinder body 12 to move relative to each other, and the small hydraulic cylinder is connected to the large hydraulic cylinder through the oil pipe 3, so it will push the second stage of the large hydraulic cylinder When the piston rod moves, due to the different cross-sectional areas, there will be a force-increasing effect. Since the cavity of the second-stage piston rod of the large hydraulic cylinder is sealed, the relative stroke between the first-stage piston rod 1 of the large hydraulic cylinder and the second-stage piston r...

Embodiment 3

[0027] When the disabled need to squat down, the sensor (myoelectric sensor) 7 sends a signal C to the control module 9, the control module 9 controls the motor will not be started, and the secondary piston rod 2 of the large hydraulic cylinder will not contact with the cylinder body of the large hydraulic cylinder 11 produces relative motion. The rotary motion of the joint head 14 will compress the first-stage piston rod 1 of the large hydraulic cylinder. When the joint head 14 rotates beyond a certain angle, the entire large hydraulic cylinder will also move accordingly, so that the air valve is fixed on the support shell 13 The air valve is opened by the contact of the striker pin on the top, and the compressed air inside will be discharged after the air valve is opened, so that the first-stage piston rod 1 of the large hydraulic cylinder can continue to be compressed, so that the entire calf can be bent at a large angle so that the disabled can Complete the squat.

[0028...

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Abstract

The invention relates to a myoelectric knee joint which mainly comprises a first-level piston rod, a second-level piston rod, an oil pipe, a small hydraulic cylinder piston rod, a crank, a speed reducer, a sensor, a battery, a control module, a motor, a large hydraulic cylinder body and a small hydraulic cylinder body, wherein the support shell is hinged with an articular head; the articular head is hinged with the first-level piston rod; the second-level piston rod is hinged with the support shell; the large hydraulic cylinder body is hinged with the support shell; the speed reducer and the motor constitute an integral unit (motor speed reducer) which is fixed to the crank; the crank is hinged with the small hydraulic cylinder piston rod; the small hydraulic cylinder piston rod and the small hydraulic cylinder constitute a sliding pair; the battery and the control module are fixed to the support shell; the oil pipe is connected with the large hydraulic cylinder body and the small hydraulic cylinder body; and an oil way control valve, the first-level piston rod and the second-level piston rod are arranged in the oil pipe. The invention enables a thigh amputee to naturally walk on stairs and slopes.

Description

technical field [0001] The invention relates to a prosthetic knee joint, in particular to a myoelectric knee joint using myoelectric induction. Background technique [0002] Prosthesis, a device used to compensate for the loss of part of the body's limb functions, can be divided into upper limb prosthesis and lower limb prosthesis. Upper limb prostheses are divided into forearm prostheses and upper arm prostheses. Lower limb prostheses are divided into hip prostheses, thigh prostheses, and calf prostheses. [0003] The current thigh prosthetic knee joints are divided into single-axis, four-link, pneumatic, hydraulic, and electronic knee joints. Various knee joints focus on support control in the stretched state and swing control in the swing state, and lose support control in the knee-bending state. And after flexion, there is no extension and extension function. Therefore, when walking on slopes and stairs, you cannot walk alternately like healthy legs. When going uphill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/64A61F2/72
Inventor 黄元清
Owner 黄元清
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