The torque driver has not been returned to pmt for inspection/investigation per request of pmt to our (b)(6) distributor.No other procedures used on the pt were returned to pmt for inspection/investigation.The distributor has not provided any additional info per pmt corporation's requests the past two weeks.The pmt torque driver is supposed to be calibrated on an annual basis per the labeling on the device that states "calibration due date (b)(4)".This device has been past the calibration due date for over 7 years.Pmt is attempting to get back the torque driver for evaluation but we assume it was user error based upon the fact that the skull pin penetrated the thickest portion of the skull and the skull pins are designed to penetrate the skull only 2mm and the portion of the skull, the calotte, is several factors thicker.It is assumed that the torque driver was set at a higher torque setting than is known by learned intermediary for such a procedure.
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