TBI Hemorrhage Data: Impactor Velocity and Depth

This study aimed to develop a reproducible swine model of TBI in the setting of uncontrolled abdominal hemorrhage, using an electronically controlled cortical impactor (eCCI) to induce TBI and facilitate concurrent liver injury via laparotomy. A custom stereotactic frame and impactor mount were built to accommodate the unique supine positioning. An electromotive force sensor built into the custom impactor tip was used to establish the impactor set point at the dural border.In 11 swine, eCCI readings showed a mean TBI impact velocity of 3.46 m/s (SD 0.041) and depth of 10.77 mm (SD 0.042) compared to programmed values of 4.0 m/s and 10.99 mm respectively. This model effectively produced reproducible TBI eCCI calibration and impact measurements, demonstrating the feasibility of inducing concurrent injuries in a supine TBI polytrauma swine model.