MAUDE Adverse Event Report: STRYKER GMBH 2.0MM ASNIS MICRO, CANNULATED SCREWDRIVER, 2.0MM, AO COUPLING; ORTHOPEDIC MANUAL SURGICAL INSTRUMENT

Model Number	45-20001
Medical Device Problem Code	Fracture (1260)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	12/14/2020
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 patient underwent orif procedure for hand.The surgeon inserted the screw as usual, but it was difficult to insert.Then, he noticed that the tip of the screwdriver was broken.He replaced the screwdriver and tried to reinsert it, but the second screwdriver broke and the screw itself couldn't come out of the guide wire.Thereafter, the procedure completed without problem.".
Additional Manufacturer Narrative
The reported event could be confirmed, since the device was returned for evaluation and matches the alleged failure mode.The device inspection revealed the following: the received screwdriver shows signs of normal and prolonged usage however its tip is found to be broken.The breakage was uneven, with one half of the tip completely broken off.This is a typical sign of application of combined bending and torsional overload, leading to an instantaneous (brittle) fracture.The critical diameter of the screwdriver was observed to be 2.98mm as required against a range of 2.95mm ¿ 3.00mm.Similarly, the average hardness of the screwdriver was observed to be 56.5 hrc as required against a range of 54.0 hrc ¿ 58.0 hrc.As per the dimensional inspection and hardness testing, the returned screwdriver 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 investigation, the root cause was attributed to be user related.The breakage was most likely caused due to a combination of torsional and bending overload applied on the screwdriver during the surgery.If any additional information is provided, the investigation will be reassessed.
Event or Problem Description
As reported: "the patient underwent orif procedure for hand.The surgeon inserted the screw as usual, but it was difficult to insert.Then, he noticed that the tip of the screwdriver was broken.He replaced the screwdriver and tried to reinsert it, but the second screwdriver broke and the screw itself couldn't come out of the guide wire.Thereafter, the procedure completed without problem.".

• Brand Name: 2.0MM ASNIS MICRO, CANNULATED SCREWDRIVER, 2.0MM, AO COUPLING
• Common Device Name: ORTHOPEDIC MANUAL SURGICAL INSTRUMENT
• Manufacturer (Section D): STRYKER GMBH; bohnackerweg 1; postfach; selzach 2545 ; SZ 2545
• MDR Report Key: 11143386
• Report Number: 0008031020-2021-00015
• Device Sequence Number: 17068253
• Product Code: LXH
• UDI-Device Identifier: 04546540534385
• UDI-Public: 04546540534385
• 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): 05/05/2021

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: 45-20001
• Device Catalogue Number: 45-20001
• Device Lot Number: 1000399976
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 12/30/2020
• Initial Date Received by Manufacturer: 12/14/2020
• Supplement Date Received by Manufacturer: 04/12/2021
• Initial Report FDA Received Date: 01/08/2021
• Supplement Report FDA Received Date: 05/05/2021
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1