The perforator was not returned for evaluation (discarded); therefore, an evaluation of the device could not be performed.Lot number information has been provided; therefore, manufacturing records were reviewed and found no anomalies.The cause(s) of the difficulty reported by the customer could not be determined.If additional relevant information becomes available in the future, this complaint will be reopened, and the respective evaluation performed.Trends will be monitored for this and similar issues.At present, we consider this complaint to be closed.Although the complaint was not confirmed, potential causes of failure include: perforator components cannot withstand multiple sterilizations/uses, impact introduction of drill to skull able to cause scoring on the pin/triangle/slot interface, inadequate spring (k-factor and/or length), drill used for multiple holes; chatter/deformation of pin/slot interface, drill allows to be set incorrectly, incorrect specification of surface finish for inner drill outer drill and pin, or user misuse.
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