A head immobilizer is a medical device used to stabilize and protect a patient's head and neck during emergencies, particularly in cases of suspected spinal injuries. It helps prevent movement that could worsen an injury while providing support and comfort. These devices are commonly used by emergency medical personnel and in hospitals. They often consist of a padded frame and straps that secure the patient's head in place. Head immobilizers are essential tools in emergency medicine and are designed to ensure patient safety during transport and treatment.