Abstract: The present disclosure is directed to embodiments of a needle safety sheath, guard, or device that is compatible and removably mountable to syringes (e.g., aspirating syringes for use within the dental industry) to which needles may be mounted. In at least one embodiment, the needle safety sheath, guard, or device includes one or more slots and one or more cutouts along a cylindrical safety sheath of the needle safety sheath, guard, or device along which the cylindrical safety sheath may slide from a retracted position (e.g., non-deployed state) to an extended position (e.g., deployed state) and vice versa. One or more flexible members may be along the cylindrical safety sheath that allow a medical practitioner to remove the needle from the syringe without the medical practitioner having to be exposed to a tip of the commercially available needle.