Gas-propelled Impactor
Gas-propelled Impactor - Related Videos
11:37
Propeller Characterization: Variations in Pitch, Diameter, and Blade Number on Performance
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2023
Source: Shreyas Narsipur, Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC A propeller is a twisted airfoil, where the angle of the chord changes with respect to the location, along the radial station, as shown in Figure 1. Propellers are widely used in aircraft and watercraft propulsion systems thereby necessitating detailed characterizations of propellers to design high performance vehicles. Figure 1. Chord, thickness, and pitch at a radial station. One of...
03:24
Generating a Mouse Model of Traumatic Brain Injury Using an Impactor Device
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2025
This video demonstrates the procedure for inducing traumatic brain injury (TBI) in a mouse model. An anesthetized mouse with an exposed skull is taken to create an opening in the skull, and then a controlled cortical injury is induced using an impact device. The injury damages the brain tissue, causing impaired cognitive function and motor coordination.
03:58
Generating a Traumatic Brain Injury Mouse Model Using an Impactor Probe
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2025
This video demonstrates the procedure for inducing an open-skull traumatic brain injury in a mouse by making a midline skull incision, drilling through the skull and removing the bone flap to expose the brain cortex, and applying high pressure to induce trauma. The wound is then sutured to prepare the mouse model for subsequent experiments.
07:28
A Contusive Model of Unilateral Cervical Spinal Cord Injury Using the Infinite Horizon Impactor
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Cited by 46 •
2012
A reliable and repeatable way to produce a cervical unilateral spinal cord injury using the Infinite Horizon impactor is described. The method takes advantage of a custom designed frame and clamp to stabilize the spine. The standardized procedure and biomechanical injury parameters result in sufficient and sustained injuries.
07:51
Gas Absorber
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2023
Source: Michael G. Benton and Kerry M. Dooley, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Gas absorbers are used to remove contaminants from gas streams. Multiple designs are used to accomplish this objective1. A packed bed column uses gas and liquid streams running counter to each other in a column packed with loose packing materials, such as ceramics, metals, and plastics, or structured packing1. The packed bed uses surface area created by the packing to...
FAQs
Researchers regulate impact intensity and timing while the device drives a piston or impactor into the skull or exposed dura. These settings determine how much mechanical deformation or force the experimental model receives. Keeping those variables defined allows investigators to relate a controlled physical insult to later changes in tissue damage, inflammation, neuronal function, or behavior.
Force and deformation provide ways to characterize the mechanical insult. A study may define the impact through the force delivered or the deformation produced, then hold that chosen condition consistent across experiments. This matters because neurological outcomes can be compared more meaningfully when the initiating injury is described and applied in a standardized way.
The resulting model can be examined across tissue, cellular-function, and behavioral outcomes. Investigators may assess tissue damage and neuroinflammation, examine neuronal dysfunction, and monitor behavioral changes after the controlled impact. Considering these levels together helps connect the initial mechanical event with broader consequences of brain trauma and supports evaluation of possible therapeutic interventions.
A typical setup uses compressed gas, a piston or impactor, and a target at the skull or exposed dura. Investigators set the intended impact intensity and timing, deliver the mechanical event, and then assess consequences such as tissue damage, neuroinflammation, neuronal dysfunction, or behavioral change. The exact readouts depend on the study.
Standardized impact conditions make results easier to compare across experiments and studies. When intensity, timing, and the resulting mechanical insult are controlled, differences in tissue damage, inflammatory responses, neuronal dysfunction, or behavior can be interpreted against a more consistent injury background. This improves research on traumatic brain injury mechanisms and comparison of potential interventions.
A gas-propelled impactor is useful when a study needs a reproducible experimental model of traumatic brain injury rather than an uncontrolled injury event. Researchers can use the model to investigate how mechanical trauma relates to neuroinflammation, neuronal dysfunction, and behavioral changes, or to evaluate therapeutic interventions under defined injury conditions.