The pusher was returned for evaluation.There was no damage noted in heater coil section, and the pusher was in conformance, with the exception of a small kink in the un-stretched platinum coil section.The distal end of the pusher was dissected to expose the attachment tether for analysis.A tensile break was noted on the attachment tether tip, which measured a rebound length of 0.196".Based upon the investigation findings and available information, the reported complaint can be confirmed.The root cause cannot be determined; however, the device exhibited evidence that it was subjected to tensile forces that exceeded its strength specifications.The instructions for use (ifu) identifies premature or difficult coil detachment as potential complications associated with use of the device.
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