Can a simple marking device make epidurals safer and faster?

This trial evaluates a new device called PAMS that attaches to an ultrasound probe to mark the exact spot for epidural needle insertion and measure the correct angle. The study involves healthy volunteers acting as patients and anesthesia doctors as operators, who will practice on a mannequin and then perform simulated procedures on the volunteers. The goal is to see if PAMS is easier to use and more accurate than the current method of marking with pens, which can be washed off by skin sterilization. Feedback from both doctors and volunteers will help refine the device for future use.