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The M5112 standard locator and cranial spinal cord injury instrument are devices that utilize the principle of free fall, consisting of a standard stereotaxic locator, spinal cord adapter, free fall impactor, weights, and firing pins. They are mainly used to create animal models of cranial injury.
By using a brain locator to fix the animal's head or a spinal cord adapter to fix the animal's spine without any relative movement, the 3D manipulator arm is moved to accurately locate the impact site. Then, using the principle of free fall, different weights and limit devices are selected to precisely control the impact position and force, causing varying degrees of damage to the animal's skull, brain, and spinal cord. It can create highly repetitive brain injury/spinal cord injury models without the need for computer software control, and has the characteristics of simple operation, strong practicality, and high cost-effectiveness. Mainly used in neuroscience research to establish experimental models for small animals such as mice, rats, and guinea pigs.