A surgical bone-protecting drill guide device includes a body formed of biocompatible material forming a shell. The body includes an outer surface, an interior surface being a reverse-engineering surface approximation of a protruding boney structure of one or more bones in an image of a patient and body material between the outer surface and the interior surface. The device includes implant guides. Each implant guide is configured to extend from the outer surface and through the body material and the interior surface and provide a window to a pre-planned implant location for implanting a respective one implant relative to the protruding boney structure of the patient. The window has a size and shape that is pre-calculated as a function of a size of a pre-determined tool to be inserted through the window.