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Method and device for testing stress of brain tissue under brain deceleration impact

A technology for brain tissue and deceleration injuries, applied in educational appliances, instruments, teaching models, etc., can solve problems such as insufficient accuracy of measurement results, inaccurate experimental results, and out-of-sync displacement

Inactive Publication Date: 2010-08-04
INST OF FIELD OPERATION SURGERY NO 3 MILITARY MEDICL UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using the method of sensor measurement, due to the large difference in the density of the sensor and the brain, the displacement of the two is not synchronized, so the measurement results are faced with the problem of insufficient accuracy; in addition, the use of photoelastic materials to simulate the measurement of the brain It is also limited by space, and can only measure two-dimensionally. At the same time, there is still a big difference in the shape and size of the brain model made of photoelastic materials and the actual brain model, which also makes the experimental results more accurate. big inaccuracy

Method used

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  • Method and device for testing stress of brain tissue under brain deceleration impact
  • Method and device for testing stress of brain tissue under brain deceleration impact
  • Method and device for testing stress of brain tissue under brain deceleration impact

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Experimental program
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Effect test

specific Embodiment 1

[0022] The deceleration collision injury test platform consists of an upper support 1, a guide rail 2, a stop bar 3, a movable platform 4, a lower support 5, a rubber gasket 6, a transparent skull model 7, and a cover 8. The guide rail 2 is installed between the fixed upper and lower supports 1 and 5; the movable platform 4 can freely fall along the guide rail 2; Adjust and apply combined constraints on the transparent skull model 7 together with the cover 8, so that the transparent skull model 7 can remain stable during the deceleration impact process.

specific Embodiment 2

[0023] 1) Generate several air bubbles at the corresponding parts of the brain tissue substitute in the transparent skull model 7 . During the deceleration impact process of the head model, the volume of the air bubbles in the intracranial brain tissue will change accordingly due to the change of the environmental pressure. The impact process is recorded by the high-speed camera measurement system and the volume change of the air bubbles is analyzed, so as to obtain The pressure on the corresponding parts of the intracranial brain tissue during the deceleration impact process.

[0024] 2) Raise the movable platform 4 together with the transparent head model 7 to a certain height, and then carry out the drop impact test. for analysis.

[0025] 3) The following are the experimental results of two drop experiments

[0026] The peak deceleration of the movable platform and the peak pressure of the bubble

[0027]

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Abstract

The invention relates to an experimental method and an experimental device for injury research, in particular to an experimental method and an experimental device for testing the stress of brain tissue in deceleration injury based on a visual head model. The experimental method and the experimental device are characterized in that: a head model with similar dimension to a real human head is established, the deformation condition of bubbles in the intracranial brain tissue of the head model in the deceleration impact process can be observed by means of a high-speed video camera by a method for generating the bubbles in a brain tissue model, and the stress distribution of the brain tissue and the variation condition thereof are obtained through analysis. The experimental method and the experimental device can be applied to brain deceleration injured experimental research in traffic medicine, sport medicine and aerospace medicine, and other aspects.

Description

Technical field: [0001] The invention relates to an experimental method and device for trauma biomechanics research, in particular to an experimental method and device for testing brain tissue stress in craniocerebral deceleration injury. Background technique: [0002] Craniocerebral impact injury is one of the common injuries and main causes of death in traffic accidents. According to foreign statistics, the incidence rate of craniocerebral impact injury is as high as 54%, which is the primary cause of death and disability after injury. Traffic accident injuries are the "world's number one public hazard" that poses the greatest threat to human life. Common types of injuries in traffic accidents are acceleration injuries and deceleration injuries. Acceleration injury is the injury caused by the accelerated motion of a stationary organism suddenly hit by an external force, while deceleration injury is the injury caused by a moving organism suddenly colliding with other objec...

Claims

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Application Information

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IPC IPC(8): G09B23/28
Inventor 刘盛雄尹志勇赵辉杨光瑜王正国
Owner INST OF FIELD OPERATION SURGERY NO 3 MILITARY MEDICL UNIV PLA
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