The doctor did not provide any information about the patient.Expiration date: this device has no expiration date.Udi: this device was manufactured before udi was implemented for the device.This device is not an implantable device.The device investigation has been completed and the results are as follows: device history record review: the dhr was reviewed and the part met all the criteria called for in the production router.Root cause: the returned part was physically inspected in comparison with the dhr.The work order was fulfilled correctly; however, the work order calls for a peek ring to be assembled with drill extender.This peek ring, in-turn, makes the mating parts (drills) hard to remove.A design update was made to provide retention without using the peek ring.When this occurred, the packaging router was not updated to remove the peek-ring during assembly.This in turn led to the updated drill extenders being assembled with the peek ring.This in turn led to the tight fit between current drill extender and it's mating parts (drills).
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