MAUDE Adverse Event Report: INTEGRA LIFESCIENCES CORPORATION OH/USA MAYFIELD TRIAD SKULL CLAMP; SKULL CLAMPS AND HEADREST SYSTEMS

Catalog Number	A1108
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Code	Skull Fracture (2077)
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
An investigation has been initiated based on the reported information.Upon completion of the investigation, a follow-up report will be submitted.
Event or Problem Description
A facility reported that during a case they encountered a problem with the mayfield triad skull clamp (a1108) which resulted in a small fracture to the patient's skull.The exact problem encountered with the device has not been reported.The case proceeded with a non mayfield skull positioning device.The facility also noted that the surgeon is an extremely experienced mayfield user with over 20 years of practice and is extremely cautious when applying the skull clamp.No surgical delay has been reported.
Additional Manufacturer Narrative
Updated fields: d4, d9, g3, g6, h2, h3, h6, h11.The mayfield triad skull clamp (a1108) was not returned for evaluation; therefore, failure analysis cannot be completed due to the lack of information to perform a complete investigation.Additionally, the serial number provided does not appear to be valid; therefore, the device history record (dhr) could not be reviewed.As a result, the definite root cause cannot be determined.Based on the reported complaint, probable root cause is improper or suboptimal placement of the skull clamp on the patient.If additional relevant information becomes available in the future, this complaint will be reopened, and the respective evaluation performed.Trends will be monitored for this and similar issues.At present, we consider this complaint to be closed.

• Brand Name: MAYFIELD TRIAD SKULL CLAMP
• Common Device Name: SKULL CLAMPS AND HEADREST SYSTEMS
• Manufacturer (Section D): INTEGRA LIFESCIENCES CORPORATION OH/USA; 4900 charlemar drive; 4900 charlemar drive; cincinnati OH 45227
• Manufacturer (Section G): INTEGRA LIFESCIENCES CORPORATION OH/USA; 4900 charlemar drive; cincinnati OH 45227
• Manufacturer Contact: vivian nelson ; 1100 campus drive; princeton, NJ 08540 ; 6099362319
• MDR Report Key: 23383837
• Report Number: 3004608878-2025-00201
• Device Sequence Number: 18315262
• Product Code: HBL
• UDI-Device Identifier: 10381780253518
• UDI-Public: 10381780253518
• Combination Product (Y/N): N
• PMA/510(K) Number: PRE-AMEND
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: User Facility,Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 12/22/2025

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Operator of Device: Health Professional
• Device Catalogue Number: A1108
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 10/02/2025
• Supplement Date Received by Manufacturer: 12/05/2025
• Initial Report FDA Received Date: 10/24/2025
• Supplement Report FDA Received Date: 12/22/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• 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
• Outcome Attributed to Adverse Event: Other
• Patient Sex: Unknown