In fact, to remove the foreign body in one stroke, we had simulated the procedure in vitro preoperatively and concluded that the entire cocklebur fruit could be grasped easily and tightly by the trielcon. We believed that the right cocklebur fruit, which was near the bifurcation of the trachea, could be extracted in one pass.
However, during the operation, the cocklebur fruit in the right bronchus was pushed to a deeper level by the trielcon. The rigid bronchoscope was then passed into the right bronchus followed the foreign body pushed even further, and the patient's blood oxygen saturation declined rapidly from 90% to 15%.
The cocklebur fruit was pushed to a deeper level by the trielcon, and the rigid bronchoscopy that followed obstructed the right lung entirely, from which the patient almost died.