MAUDE Adverse Event Report: HOLOGIC, INC LOCALIZER; MARKER, RADIOGRAPHIC, IMPLANTABLE

Model Number	HB100
Medical Device Problem Codes	Incorrect, Inadequate or Imprecise Result or Readings (1535); Communication or Transmission Problem (2896)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	01/09/2026
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Device history record (dhr) review was unable to be conducted for the device at the time of this report.A follow up report will follow with the information from the dhr.
Event or Problem Description
It was reported that during a localizer lumpectomy procedure on (b)(6) 2026, the radiofrequency clip identification number was not reflecting on the device when attempting to locate the clip during the procedure.The user reports that "the inaccuracy of this device caused this patient to have more breast tissue removed that was likely necessary." it is reported that the procedure was successfully completed.No further information is currently available.
Additional Manufacturer Narrative
An investigation was conducted: it was reported that during a localizer lumpectomy procedure on (b)(6) 2026, the radiofrequency clip identification number was not reflecting on the device when attempting to locate the clip during the procedure.The user reports that "the inaccuracy of this device caused this patient to have more breast tissue removed that was likely necessary." it is reported that the procedure was successfully completed.Investigation methods and findings: the device was not returned for this complaint, and only limited patient-related information was provided.Investigation of this issue was conducted through customer-provided information, historical complaint review, analysis of similar events, and evaluation of product design.Cause/root cause: the complaint could not be confirmed, not enough information was presented to determine a possible root cause for this issue, however, a previously opened capa¿s captured similar issues as well as issues involving localizer readers with inaccurate distance readings.As a part of the capa investigation, interferences such as wireless chargers and rf cautery devices, caused out of spec readings.Conclusion: the reported issue was not confirmed.These types of issues were captured in previously opened capa¿s.Future events will be monitored and trended.Complaint confirmed: no.Device history record (dhr) review: the certificate of compliance of the contract manufacturer was reviewed for the corresponding lot number, and the device was released meeting all qa specifications.

• Brand Name: LOCALIZER
• Common Device Name: MARKER, RADIOGRAPHIC, IMPLANTABLE
• Manufacturer (Section D): HOLOGIC, INC; 250 campus drive; marlborough MA 01752
• Manufacturer (Section G): HOLOGIC, INC; 250 campus drive; marlborough MA 01752
• Manufacturer Contact: dara smithers ; 600 technology drive; newark, DE 19702
• MDR Report Key: 24261258
• Report Number: 1222780-2026-00047
• Device Sequence Number: 20827183
• Product Code: NEU
• UDI-Device Identifier: 00855436007037
• UDI-Public: (01)00855436007037(21)102375877(11)231025
• Combination Product (Y/N): N
• Initial Reporter State: WV
• Initial Reporter Country: US
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: User Facility,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 03/10/2026

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 Model Number: HB100
• Device Catalogue Number: HB100
• Device Lot Number: 50176444-2
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 01/15/2026
• Supplement Date Received by Manufacturer: 02/11/2026
• Initial Report FDA Received Date: 02/04/2026
• Supplement Report FDA Received Date: 03/10/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 10/25/2023
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: A
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Other
• Patient Sex: Unknown