Having medical students intubate during elective procedures, under supervision of an anesthesiologist, is common practice. However, this patient specifically wanted no medical students, but the hospital ignored her wishes:

The Indiana Supreme Court is considering whether a woman who had to have a second surgery after a medical student tore her esophagus during a botched procedure was a victim of battery.
Attorneys for W- Ruth Mullins say she signed documents saying she didn’t want students in the operating room, but doctors ignored her wishes.

Her attorney, Sherrill Colvin, says the case fits the definition of battery because harm resulted after the student inserted a tube in Mullins’ throat.