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The M5109 traumatic brain injury impactor is a device that utilizes the principle of free fall and consists of a standard stereotaxic base, a free fall impactor, weights, and a firing pin. It is mainly used to create animal models of traumatic brain injury.
The device uses a base to fix the animal's head without any relative movement, moves the impact bracket to locate the impact site, and then uses the principle of free fall to accurately control the impact position and force by selecting weights of different weights and limit devices, causing varying degrees of damage to the animal's skull and brain. It does not require computer software control to create highly repetitive brain injury models, 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.

1. The striking bracket consists of X, Y, and Z axes, which can be freely adjusted and locked, and can rotate
2. Z-direction metal tube with a height of 300mm and 26 equidistant positioning holes
3. Hammer specifications: Φ 1.0, Φ2.0，Φ3.0，Φ4.0
4. Weight specifications: 5g, 10g, 20g, 40g, optional
5. The height adjustment accuracy of the weight is 10mm (hole spacing)
6. Dimensions of the bottom plate of the impactor: L260mm * W165mm * H10mm
7. Spinal cord clamp bracket, which can be composed of X, Y, and Z axes; Freely adjustable clamping direction