BEUDAMED
    FDA Adverse Event Malfunction Summary report: N

    MIS QC T27 POLY DRIVER

    MDR report key: 7784882 · Received August 15, 2018

    Report

    Report Number
    1526439-2018-50794
    Event Type
    Malfunction
    Date Received
    August 15, 2018
    Date of Event
    January 1, 2018
    Report Date
    July 27, 2018
    Manufacturer
    MEDOS INTERNATIONAL SàRL CH
    Product Code
    HXX
    UDI-DI
    10705034438191
    PMA / PMN Number
    EXEMPT
    Product Problem
    Yes
    Report Source
    Manufacturer report
    Reporter Location
    US
    Reporter Occupation
    PHYSICIAN

    Narratives

    Additional Manufacturer Narrative · 1

    (B)(4). DEVICE IS AVAILABLE FOR EVALUATION. INVESTIGATION WILL BE CONDUCTED. FOLLOW UP WILL BE FILED WITH THE INVESTIGATION RESULTS. IF INFORMATION IS OBTAINED THAT WAS NOT AVAILABLE FOR THE INITIAL MEDWATCH, A FOLLOW-UP MEDWATCH WILL BE FILED AS APPROPRIATE.

    Additional Manufacturer Narrative · 1

    PRODUCT COMPLAINT # (B)(4). DEVICE EVALUATED BY MFR: CORRECTED. VISUAL EXAMINATION AT THE MACROSCOPIC LEVEL REVEALED THAT THE FRACTURE WAS LOCATED AT THE DRIVERS DISTAL TIP. THE SECOND HALF OF THE DRIVER TIP WAS NOT RETURNED FOR ANALYSIS. THE RESULTS OF THE FRACTURE ANALYSIS REPORT REVEALS PLASTIC DEFORMATION AT THE HEXLOBES AND TORSIONAL SHEAR MARKINGS FOLLOWING A CIRCULAR PATTERN. THIS SUGGESTS THAT THE FRACTURED TIP UNDERWENT A QUASI-STATIC OVERLOAD TORSIONAL SHEAR FAILURE. A REVIEW OF THE DEVICE HISTORY RECORD WAS CONDUCTED. NO ISSUES WERE IDENTIFIED DURING THE MANUFACTURING AND RELEASE OF THIS PRODUCT THAT COULD HAVE CONTRIBUTED TO THE PROBLEM REPORTED BY THE CUSTOMER. ALL COMPLAINT TRENDS WILL BE EVALUATED AS A PART OF THE DEPUY SPINE MONTHLY COMPLAINT REVIEW MEETING. A DEFINITIVE ROOT CAUSE FOR THE DRIVER TIP FRACTURING CANNOT BE POSITIVELY DETERMINED. HOWEVER, THE FRACTURE ANALYSIS REPORT SUGGESTS THAT THE FRACTURED TIP UNDERWENT A QUASI-STATIC OVERLOAD TORSIONAL SHEAR FAILURE. AS THERE HAS BEEN NO ISSUE IDENTIFIED IN THE MANUFACTURING OR RELEASE OF THE DEVICE THAT COULD HAVE CONTRIBUTED TO THE PROBLEM REPORTED BY THE CUSTOMER AND NO SYSTEMIC TRENDS WERE FOUND, THIS COMPLAINT FILE WILL BE CLOSED WITH NO FURTHER ACTION REQUIRED. IF INFORMATION IS OBTAINED THAT WAS NOT AVAILABLE FOR THE INITIAL MEDWATCH, A FOLLOW-UP MEDWATCH WILL BE FILED AS APPROPRIATE.

    Description of Event or Problem · 1

    IT WAS REPORTED THAT ON (B)(6) 2018, AS PART OF DR. (B)(6) OF HIS REVISION FROM (B)(6) 2018 (PART 1) HE EXPOSED THE PATIENT FROM T10-ILIUM AND AS PLANNED REVISED THE PREVIOUS CONSTRUCT WITH NEW RODS AND EXPEDIUM SINGLE INNER SCREWS (REMOVED FOR POSTERIOR RELEASE/ CORONAL DEFORMITY, (B)(4). ON (B)(6) 2018 DURING THE INITIAL REVISION OF THE CONSTRUCT, DR. (B)(6) INSPECTED THE 9 X 100 MM ILIAC SCREW ON THE RIGHT AND DECIDED TO REPLACE IT WITH A 10 X 100 MM. IN DOING SO, HE REMOVED THE SCREW, TAPPED WITH A 10 MM VIPER SAI TAP TO 100 MM. UPON INSERTION OF THE 10 X 100 MM SCREW, HE BROKE THE VIPER SAI MIS DRIVER SCREW TIP (B)(4) UPON MEETING AN EXTREME AMOUNT OF RESISTANCE FROM DENSE, PELVIC BONE. THE TIP OF THE SCREW WAS LODGED IN THE T27 FITTING OF THE FULLY THREADED SAI SCREW. AT THE TIME ((B)(6) 2018), HE DECIDED TO FIX THE SCREW ON (B)(6) 2018. ON (B)(6) 2018, UPON EXPOSING THE PATIENT, HE NOTICED THAT THE SCREWDRIVER TIP THAT HAD PREVIOUSLY BEEN STUCK IN THE T27 FITTING OF THE SCREW HAD LOOSENED AND WAS EASILY OBTAINED. THE TIP WAS REMOVED AND DR. (B)(6) ATTACHED A BRAND NEW VIPER SAI MIS SCREWDRIVER TO THE 10 X 100 MM SCREW IN AN ATTEMPT TO REMOVE THE SCREW. DR. (B)(6) IMMEDIATELY MET RESISTANCE WHILE TRYING TO TURN THE SCREW COUNTERCLOCKWISE AND THE SCREWDRIVER TIP BROKE OFF JUST AS IT HAD ON (B)(6) 2018. HE REMOVED THE DRIVER AND WAS SUCCESSFULLY ABLE TO RETRIEVE THE BROKEN SCREWDRIVER TIP FROM THE T27 FITTING. DR. (B)(6) THEN USED A SMALL 5.5 MM TITANIUM ROD TIGHTENED WITH AN EXPEDIUM INNER SET SCREW IN CONJUNCTION WITH A VIPER SAI COUNTER TORQUE IN HOPES OF LOCKING THE SCREW TO A MONOAXIAL SCREW AND SPINNING THE SCREW OUT OF THE ILIUM. THE POLY TULIP HEAD SPUN WHILE THE SHANK REMAINED STILL. DR. (B)(6) THEN TRIED TO USE A SECOND BRAND NEW VIPER SAI MIS SCREWDRIVER TO REMOVE THE 10 X 100 MM SCREW. AFTER TURNING COUNTER CLOCKWISE, THE SECOND SCREWDRIVER TIP BROKE. AFTER REMOVAL OF THE SCREWDRIVER AND INSPECTION, DR. (B)(6) NOTICED THAT HE WAS ABLE TO RETRIEVE THE BROKEN SCREWDRIVER TIP FROM THE SCREW. DR. (B)(6) LOOKED AT THE SCREW AND DECIDED IT WAS FAR ENOUGH DOWN IN THE ILIUM AND THE ROD CONNECTION WOULD BE SUFFICIENT FOR A FINAL CONSTRUCT. DR. (B)(6) CONTOURED TWO COCR RODS TO MATCH THE PATIENTS ANATOMY, INSERTED THE RODS, INSERTED EXPEDIUM SINGLE INNER SET SCREWS IN THE CORRESPONDING VIPER SCREWS AND FINAL TIGHTENED THE CONSTRUCT. AFTER INTRAOPERATIVE AP AND LATERAL X-RAYS WERE OBTAINED, HE WAS SATISFIED THE OVERALL SAGITTAL AND CORONAL BALANCE OF THE PATIENTS SPINE FROM T10-ILIUM. PATIENT CONSEQUENCE? :YES. PATIENT CONSEQUENCE DESCRIPTION:ADDITIONAL ANESTHESIA TIME REQUIRED IN ATTEMPT TO REMOVE 10 X 100 MM ILIAC SCREW. 20 MINUTES. IS THE INFORMATION BEING SUBMITTED FOR THIS COMPLAINT ALL THE DETAILS THAT ARE KNOWN/AVAILABLE REGARDING THIS EVENT? : YES.

    Devices

    Seq Brand Generic Product Code Manufacturer Model Lot UDI-DI
    628431 MIS QC T27 POLY DRIVER SCREWDRIVER HXX MEDOS INTERNATIONAL SàRL CH 279704401 PC3738480 10705034438191

    Patients

    Seq Age Sex Outcome Treatment
    1 65 YR