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Spine Biomechanical Simulator

A biomechanical and simulation test technology, applied in the field of spine biomechanical simulation test equipment, can solve the problems of increased rotational movement, low accuracy, inconsistent physiological load conditions, etc., and achieve the effect of reducing rotational movement

Active Publication Date: 2018-01-02
SHANGHAI TONGJI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The traditional mechanical loading instrument measures the force loading and the specimen displacement completely independently, which makes the equipment and operation cumbersome
[0005] 2. Gradual loading significantly increases rotational motion, which is inconsistent with physiological loading conditions
[0006] 3. Loading is manual loading, the accuracy is not high

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0023] Such as figure 1 , 2 As shown, the spine biomechanical simulation test instrument is composed of three metal rods (1, 2, 3), three rotation axes (4, 5, 6), a specimen force applicator (7), a specimen fixer (8 ), two balance bars (9), a support (10), a fixed base (11) and five servo motors.

[0024] Such as( figure 1 , 2 , 3), all metal rods have scales, and the scale marks are set to 0 when the force applicator and the specimen storage container are vertically inlaid, and set to the standard state. In the state of no force applied, the force loader can move freely in 6 degrees of freedom (including front and rear, left and right, and rotation) by adjusting the servo motor: the metal rods 1, 2, and 3 can drive other moving parts in Z, X, Horizontal movement in the Y-axis direction, rotation axes 4, 5, and 6 can rotate independently, and have the ability to independently simulate 6 load components, including flexion, extension, left and right bending, and left and rig...

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Abstract

The patent of the present invention provides a spine biomechanical simulation test instrument, including a base and a loading device. The loading device is composed of multiple sets of precise rods, rod shafts and shaft-axis connections. The rod connections mainly simulate the front, back, left and right of the spine. And up and down movement, while the rod-axis connection can model the movement of the horizontal, coronal and sagittal planes, a total of six degrees of freedom. All the structures of the device are integrated, and the system data is adjusted through computer-controlled servo electrodes to reduce manual operation errors; the specimen displacement can be quickly calculated according to the displacement in all directions, making the mechanical loading and displacement measurement integrated. The devices are solid structures with close connections, can simulate high-intensity spinal loading, and provide a basis for the study of spinal biomechanics.

Description

technical field [0001] The patent of the present invention relates to a spine biomechanics simulation test instrument, especially a spine biomechanics simulation test instrument that provides continuous loading force. Background technique [0002] The stress mode and load magnitude of the spine during human motion can be simulated by different loading modes and force magnitudes. In the past few decades, the step-by-step loading buckling test was mainly used, and the pneumatic transmission device or fixed load was used to apply the load evenly to make the spine move to the maximum deflection it can bear. It is still used in the spine test experiment. In recent years, for the convenience of research, pure moment is often used. The application of unrestricted pure moment loading can ensure that the load on the sample remains constant along its length. Throughout the loading cycle, the loading condition is the same between any two connected parts of the spine. it's the same. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/10
Inventor 于研程黎明陈雷贾永伟曾至立胡笑王建杰徐委吴周睿
Owner SHANGHAI TONGJI HOSPITAL
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