MAUDE Adverse Event Report: STRYKER GMBH SCREWDRIVER BIT AXSOS T15, AO FITTING 4.0MM LOCKING SET; ORTHOPEDIC MANUAL SURGICAL INSTRUMENT

Model Number	702753
Medical Device Problem Codes	Break (1069); Material Deformation (2976)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	03/11/2021
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Upon completion of investigation, additional information will be provided in a supplemental report.
Event or Problem Description
As reported: "the tips of 2 screwdrivers were damaged when the proximal plate of the axos tibia was pulled out.The screw was able to removed with a driver of the same standard of other company in the deformation of the screw could not be confirmed in the photo before removal.It was confirmed no residual remained inside the body".
Event or Problem Description
As reported: "the tips of 2 screwdrivers were damaged when the proximal plate of the axos tibia was pulled out.The screw was able to removed with a driver of the same standard of other company in the deformation of the screw could not be confirmed in the photo before removal.It was confirmed no residual remained inside the body".
Additional Manufacturer Narrative
The reported event could be confirmed, since the device was returned for evaluation and matches the reported failure mode.Device inspection revealed the following: the received screwdriver bit shows signs of normal and prolonged usage however its tip is found to be broken.The breakage surface shows signs of slight rotational deformation/waves.Absence of plastic deformation and presence of an uneven breakage indicates that the breakage was instantaneous due to high torsional and bending overload.However, it cannot be excluded that residual stress from previous usage may have also contributed in the breakage.The average hardness of the drill was observed to be 60.2 hrc as required against a range of 58.0 hrc ¿ 62.0 hrc.The returned screwdriver bit was found to be within specifications.A review of the device history for the reported lot did not indicate any abnormalities.No corrective actions are required at this time.No indications of material, manufacturing or design related problems were found during the investigation.A review of the labeling did not indicate any abnormalities.Based on the above investigation, the root cause of the failure is user related.The breakage of the tip happened due to a combination of torsional and bending overload, the likelihood of which is greater during an explantation.If any further information is provided, the complaint report will be updated.

• Brand Name: SCREWDRIVER BIT AXSOS T15, AO FITTING 4.0MM LOCKING SET
• Common Device Name: ORTHOPEDIC MANUAL SURGICAL INSTRUMENT
• Manufacturer (Section D): STRYKER GMBH; bohnackerweg 1; postfach; selzach 2545 ; SZ 2545
• MDR Report Key: 11602497
• Report Number: 0008031020-2021-00117
• Device Sequence Number: 14566669
• Product Code: LXH
• UDI-Device Identifier: 07613327005028
• UDI-Public: 07613327005028
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: health professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 06/25/2021

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: 702753
• Device Catalogue Number: 702753
• Device Lot Number: J03019
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 04/13/2021
• Initial Date Received by Manufacturer: 03/11/2021
• Supplement Date Received by Manufacturer: 06/04/2021
• Initial Report FDA Received Date: 04/01/2021
• Supplement Report FDA Received Date: 06/25/2021
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1