MAUDE Adverse Event Report: STRYKER GMBH LOCKING SCREW VARIAX 2 T10, FULL THREAD, 3.5MM / L26MM; PLATE, FIXATION, BONE

Model Number 657326S

Device Problem Positioning Failure (1158)

Patient Problem No Clinical Signs, Symptoms or Conditions (4582)

Event Date 10/01/2021

Event Type  malfunction  

Manufacturer Narrative

The device will not be returned.If additional information becomes available, it will be provided in a supplemental report.Device was discarded by hospital.

Event Description

It was reported a locking failure occurred.It is possible that the allowable angle of locking has been exceeded.

Event Description

It was reported a locking failure occurred.It is possible that the allowable angle of locking has been exceeded.

Manufacturer Narrative

The reported event could not be confirmed, since the device was not returned for evaluation and no other evidences were provided.The device inspection was not possible as the product was not returned for investigation.A potential non-conformity report was nonetheless initiated to address this event.The comprehensive root cause analysis of the potential ncr included a surface and microstructure analysis as well as nano-indent hardness measurement of variax1 and variax2 screw samples by the (b)(6) on behalf of stryker.Further internal investigation efforts were focusing on the anodization color difference between variax1 and variax2 screws.Significant differences between the screws which could result in the reported complaints have not been revealed in either fraunhofer or stryker investigations.Excessive in-house handling and bench testing with variax2 screws from various manufacturing batches showed that locking is achieved as intended.The desired increase in torque indicating to the customer that the screw is locking in the plate, can be confirmed.Considering the information given and based on the above investigations a root cause of the reported event could not be determined.A review of the device history for the reported lot did not indicate any abnormalities.A review of the labeling did not indicate any abnormalities.If any further substantial information is provided, the investigation report will be updated.

• Brand Name: LOCKING SCREW VARIAX 2 T10, FULL THREAD, 3.5MM / L26MM
• Type of Device: PLATE, FIXATION, BONE
• Manufacturer (Section D): STRYKER GMBH; bohnackerweg 1; postfach; selzach 2545 ; SZ 2545
• Manufacturer (Section G): STRYKER GMBH; bohnackerweg 1; postfach; selzach 2545 ; SZ 2545
• Manufacturer Contact: marilyne chaumont ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 12699085
• MDR Text Key: 278413038
• Report Number: 0008031020-2021-00440
• Device Sequence Number: 1
• Product Code: HRS
• UDI-Device Identifier: 07613327087024
• UDI-Public: 07613327087024
• Combination Product (y/n): N
• Reporter Country Code: JA
• PMA/PMN Number: K132502
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Health Professional
• Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date: 12/16/2021

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 10/26/2021
• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Device Operator: Health Professional
• Device Expiration Date: 08/31/2022
• Device Model Number: 657326S
• Device Catalogue Number: 657326S
• Device Lot Number: L35232
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Date Manufacturer Received: 11/18/2021
• Was Device Evaluated by Manufacturer?: Device Not Returned to Manufacturer
• Date Device Manufactured: 09/14/2017
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Patient Sequence Number: 1