A improved weight-dropping model of Traumatic brain injury in rats

Objective To set up traumatic brain injury in rats by the improved device of Feeney's weight-dropping model and to explore the pathological characteristics and the value in clinic experiments. Methods The mild,moderate and severve brain trauma were made by a electromagneticly ontrolled releasing switch and different impact(200g×cm?600g×cm?1000g×cm)and wee proceeded a series of pathology observation. Results The different degree pathological changes of the brain injury had a direct proportion with impact. Conclusion This model has a practical value in traumatic brain injury experimental and clinical traumatic studies.