Evaluation summary: post market vigilance (pmv) led an evaluation of one device.The instrument was received partially applied with five remaining clips.During functional evaluation, it was observed that the jaws would not close upon actuation of the handle.The instrument body was removed from the shaft and disassembled for visualization of internal components.It was observed that the firing handle linkage was forced through the channel tube lugs, suggesting that the instrument had been fired through the safety interlock.Due to the noted damage, further functional testing of the instrument could not be performed.In addition; the interlock mechanism was triggered as a result of rapidly actuating the handles of the device and or forcing the device, this renders the device inoperable and poses no harm to the patient.Records from each manufacturing lot are thoroughly reviewed to ensure that products are released meeting all quality release specifications at the time of manufacture.Replication of this condition may occur when an attempt is made to fire the instrument without first loading a clip by using the trigger.The safety interlock feature is designed to prevent the jaws from closing on a vessel in the absence of a loaded clip.If an attempt is made to forcibly fire the instrument while engaged in interlock, the lugs are designed to break as noted and the interlock feature continues to function as intended.No further actions have been deemed necessary at this time.The root cause of the observed damage was due to the product not being used as intended which caused or contributed to the reported condition.No further actions have been deemed necessary at this time.If information is provided in the future, a supplemental report will be issued.
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