Final answer:
The Bonfils retromolar intubation fiberscope is the device used for advancing in the airway with a retromolar approach post stylet advancement through the vocal cords. It is particularly used for difficult airway management and provides visual guidance to medical professionals.
Step-by-step explanation:
The device meant to be advanced in the airway using a retromolar approach after the stylet has passed through the vocal cords is the Bonfils retromolar intubation fiberscope. This device is designed especially for difficult airways and assists anesthesiologists and other medical professionals in securing the airway with better visibility and manoeuvrability. The retromolar approach is used in cases where traditional methods may not be effective or possible, typically due to anatomical variances or obstructions.
Intubation devices like the Bonfils retromolar intubation fiberscope send light down a flexible fiber optic tube, which sends images back to the doctor performing the medical procedure. This image transmission enables accurate placement of the endotracheal tube in the airway, ensuring proper ventilation and oxygenation during surgical procedures or in critical care situations.