Active and passive joint prosthesis

A knee joint, active and passive technology, applied in prosthesis, medical science, artificial legs, etc., can solve the problems of inconvenience, large area of ​​wheelchair, occupation of hands, etc.

Inactive Publication Date: 2011-11-23
BEIJING FORESTRY UNIVERSITY
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wheelchairs occupy a relatively large area, and it is difficult to go up and down stairs, etc.
Using crutches is also inconvenient for going up and down stairs. At the same time, you need your hands to cooperate when walking, which takes up the functions of your hands.
In addition, these two methods also have shortcomings in terms of decoration.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Active and passive joint prosthesis
  • Active and passive joint prosthesis
  • Active and passive joint prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] combine Figure 1-4 , to further describe the specific embodiments of the present invention.

[0017] combine Figure 1-4 , the embodiment of the present invention is made up of active driving mechanism, passive constraint mechanism, knee joint shaft, overrunning clutch and other auxiliary components. In the accompanying drawings, the materials of 1, 2, 5, 6, and 13 frame parts adopt light aluminum alloy. The active driving mechanism is composed of a DC servo motor 9, a reducer 8 and a gear 7. The passive constraint mechanism is composed of a DC servo motor 14 and a bevel gear shaft 12 fixedly connected with the output shaft of the motor. Knee joint shaft 10 is installed on the U-shaped piece that is formed by connecting left side plate 5, right side plate 13, and top plate 6. The two ends of the knee joint shaft utilize the bearing 11 and the left side plate 5 and the right side plate 13 to realize kinematic cooperation. There is a bevel gear on the knee joint sha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides an active and passive joint prosthesis mechanism, which comprises an active driving mechanism, a passive constraining mechanism, a knee joint shaft, an overrun clutch and the like. The active driving mechanism consists of a direct current servo motor, a reducer and a gear. The passive constraining mechanism consists of a direct current servo motor and a bevel gear shaft. The knee joint shaft is mounted on a U-shaped block consisting of a left side plate, a right side plate and a top plate. The knee joint shaft is provided with the bevel gear; a star wheel of the one-way overrun clutch and the shaft are fixedly connected by key connection; and the external ring of the clutch is fixedly connected with a cylindrical gear. The relationship between the active driving mechanism and the passive constraining mechanism is established by the mesh of two cylindrical gears, namely, one of the active driving mechanism and the passive constraining mechanism drives the star wheel of the clutch and the other one drives the external ring of the clutch. When a user of the prosthesis walks, under the control and coordination of a prosthesis control system, the active driving mechanism conducts an active driving function and the passive constraining mechanism conducts a passive constraining function.

Description

(1) Technical field [0001] The invention relates to the technical field of prosthetics and orthotics, in particular to an active and passive prosthetic knee joint. (2) Background technology [0002] Diseases, industrial injuries, traffic accidents and accidental injuries have caused a large number of lower limb amputees. These amputees have caused a lot of inconvenience to their work and life due to the loss of walking function. Using a wheelchair and using crutches are two ways to compensate for their lack of walking ability. Wheelchairs occupy a large area, and it is difficult to go up and down stairs. It is also inconvenient to use crutches to go up and down stairs and other sports. At the same time, the hands are needed to cooperate when walking, which takes up the functions of the hands. In addition, these two methods also have deficiencies in terms of decoration. Therefore, for lower limb amputees who meet the conditions for installing artificial limbs, they usually...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/64A61F2/70
Inventor 路敦民陶燚高道祥田野李琼砚钱桦
Owner BEIJING FORESTRY UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap