MAUDE Adverse Event Report: DEPUY IRELAND SIGMA HP ADJ TIBIAL STYLUS; KNEE INSTRUMENT : ALIGNMENT DEVICES

Catalog Number	950501209
Medical Device Problem Code	Detachment of Device or Device Component (2907)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	10/30/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
This report is being submitted pursuant to the provisions of 21 cfr, part 803 (and/or part 4, as applicable).This report may be based on information which has not been investigated or verified prior to the required reporting date.This report does not reflect a conclusion by depuy synthes, or its employees that the report constitutes an admission that the product, depuy synthes, or its employees caused or contributed to the potential event described in this report.If information is obtained that was not available for the initial report, a follow-up report will be filed as appropriate.D4: udi: as the lot number for the device involved in the event was not provided, the full udi is currently not available.
Event or Problem Description
The instrument is reported for an unknown allegation.During further follow up it was reported that the device fell apart.The event did not happen in surgery.
Additional Manufacturer Narrative
Product complaint # (b)(4).Investigation summary: the instrument is reported for an unknown allegation.The event did not happen in surgery.Additional information received, "it fell apart".The product was returned to depuy synthes for evaluation.Visual analysis of the returned device revealed that the sigma hp adj tibial stylus had signs of extensive and repeated use.The subcomponents are disassembled and the shaft pin is missing.It is suspected that the effects of repeated use and servicing over the years caused damage to the pin, ultimately leading it to fall apart.The observed condition was identified as an end of life indicator; damage consistent with repeated use and servicing.The lifecycle requirements of the device are event related and depend on the use and inspection of the device in clinical practice.As the device can be damaged on the first or 100th use, the device must be properly inspected prior to each surgical use.Refer to the device/country specific ifu for information related to end of life, reprocessing instructions, and inspection procedures.A functional test was not performed since it was not applicable to the complaint condition.A dimensional inspection was not performed since it was not applicable to the complaint condition.The overall complaint was confirmed as the observed condition of the sigma hp adj tibial stylus would have contributed to the complained issue.Based on the investigation findings, the potential cause is traced to end of life, and it has been determined that no corrective and/or preventative action is proposed.There is no indication that a design or manufacturing issue has caused the reported complaint condition.As part of depuy synthes quality process, all devices are manufactured, inspected, and released to approved specifications.Additional monitoring for any potential safety signals will be conducted through complaint trending and other post-market safety surveillance activities.Device history lot: a device history record (dhr) review or manufacturing records evaluation (mre) was not possible because the date code (b0809) provided is not a valid finished goods lot number.Corrected: h3.

• Brand Name: SIGMA HP ADJ TIBIAL STYLUS
• Common Device Name: KNEE INSTRUMENT : ALIGNMENT DEVICES
• Manufacturer (Section D): DEPUY IRELAND; loughbeg ringaskiddy co.; cork ; EI
• Manufacturer Contact: elba bello ; 700 orthopaedic dr.; warsaw, IN 46581 ; 9083863534
• MDR Report Key: 23617361
• Report Number: 1818910-2025-20366
• Device Sequence Number: 8977433
• Product Code: HWT
• UDI-Device Identifier: 10603295225171
• UDI-Public: (01)10603295225171
• Combination Product (Y/N): N
• Initial Reporter State: NY
• Initial Reporter Country: US
• PMA/510(K) Number: EXEMPT
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 11/19/2025

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 Catalogue Number: 950501209
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 11/11/2025
• Supplement Date Received by Manufacturer: 12/22/2025
• Initial Report FDA Received Date: 11/21/2025
• Supplement Report FDA Received Date: 12/23/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Is the Device Labeled for Single Use? (Y/N): No
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Unknown
• Patient Sequence Number: 1
• Patient Sex: Unknown