The referenced device was returned to the service center for evaluation.The oem (oste) conducted a review of the device history records (dhr) for the affected lot or serial number and indicated there was no deviations or non-conformities regarding the described issue.A visual inspection was performed on the received condition and found the roller ball tip at the distal tip of the device was detached/broken off; the detached roller ball was returned.Additionally the loop wire was broken off as one side of the loop wire from the gray colored insulation was completely missing.A microscope inspection of the distal tip found charred marks at the breakage points of the detached roller ball tip, loop end and grey insulation post.The outer sheath from the proximal end area was noted bent.Based on the device evaluation results and similar reported events, the potential cause of the broken / detached roller ball and the broken / missing loop wire on the device can occur when there is contact between the loop wire / roller ball tip and a metal object during activation the bent outer sheath is due to excessive stress and force cause by mishandling.
|