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Electric cord driver for artificial joint

An artificial joint and driver technology, applied in the direction of joint implants, joint implants, manufacturing tools, etc., can solve problems such as changes and can not meet the output transmission ratio, avoid transmission gap, simple structure, improve accuracy and stability sexual effect

Inactive Publication Date: 2009-02-11
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing tendon-pull artificial joint drivers cannot meet the requirement that the output transmission ratio changes with the change of the expansion and contraction

Method used

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  • Electric cord driver for artificial joint
  • Electric cord driver for artificial joint
  • Electric cord driver for artificial joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] figure 1 It is a structural schematic diagram of the artificial joint electric rope driver of the present invention. Such as figure 1 As shown, the artificial joint electric rope driver of the present invention includes a servo motor 1 , a general frame 2 , a disc 3 , an angular contact ball bearing 4 , a limit cylinder 5 , a traction wire 6 and an output joint 7 . The front end of the main frame 2 is equipped with a servo motor 1, the output shaft of the servo motor 1 is fixedly connected with the disc 3 located in the main frame, and the inside of the rear end of the main frame 2 is equipped with a limit cylinder 5, and the limit cylinder 5 and the disc 3 are connected by angular contact ball bearings 4, and an even number of traction steel ropes 6 are evenly fixed along the circumference of the disc 3, and the other ends o...

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Abstract

The electric cord driver for artificial joint is one kind of driving mechanism for driving artificial joint or other mechanism. The electric cord driver for artificial joint includes a servo motor, a bus frame, limiting cylinder mounted onto the bus frame, a cord-pulley pair and an output junction. The cord-pulley pair consists of a disc and several pieces of traction steel cord, and the disc is fixed onto the output shaft of the servo motor. Each of the traction steel cords has one end fixed to the edge of the disc and the other end passing through the hole in the bus frame and fixed to the output junction. The present invention has servo motor rotating the disc and disc driving the traction steel cord to generate pull force and realize contraction motion similar to that of muscle tissue.

Description

technical field [0001] The invention relates to an electric rope driver for artificial joints, and more particularly relates to an electric rope driver for artificial joints driven by a servo motor and driven by steel ropes. Background technique [0002] At present, artificial joint drivers mainly include synchronous pulley type, harmonic gear type, ball screw type, cylinder type, pneumatic muscle type and hydraulic type, etc., and there are common problems such as complex mechanism, small output torque, large size, low precision, etc. shortcoming. [0003] Artificial joint drivers usually consist of a driving mechanism and a transmission mechanism. Wherein, the driving mechanism can be realized by using a servo motor. For artificial joint drivers driven by servo motors, the servo motors are completed in professional processing and assembly workshops, and generally can achieve relatively high processing accuracy. The transmission mechanism is generally designed and proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25J17/00B25J13/00B25J19/00A61F2/30A61F2/68
Inventor 苏剑波刘成刚
Owner SHANGHAI JIAOTONG UNIV
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