No specific testing could be performed on the complaint probe as it had been discarded by the hospital.A probe from released stock was evaluated by visual inspection and dimensional measurement.The tip is rounded and smooth with no defects observed.Probe and stylet dimensions were measured and all were within specification.Stylet was fully inserted and probe was flexible with no indication of undue stiffness.A review of probe specifications and engineering changes show no changes to the probe materials, diameters, thickness, etc.Based on evaluation of sample from released stock and engineering change review, there is no product change or defect that would attribute to the esophageal perforation.Cleveland clinic communicated that the situation was likely due to unusual finding of patient's esophagus.Physician has seen the images taken during the procedure and said that the esophagus appeared to have an folds in the esophagus.It was described in a way to indicate that this was an unusual finding.Patient may also have had a double lumen.
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