The trigger-flex bipolar probe was used to mechanically "enter the disc" during an endoscopic spine procedure instead of using a trephine.
This action caused the tip of the probe to break.
When the instrument was withdrawn, and it was realized that the tip had broken, the c-arm was used to locate the tip fragment.
The fragment was then removed via an endoscopic grasping forceps from within the patient.
The patient suffered no adverse reaction.