MAUDE Adverse Event Report: DEXCOM, INC. STELO GLUCOSE BIOSENSOR SYSTEM; CONTINUOUS GLUCOSE MONITOR

Model Number	9500-174
Medical Device Problem Codes	Break (1069); Detachment of Device or Device Component (2907)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	08/07/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
(b)(4).
Event or Problem Description
It was reported that a detached or missing sensor wire occurred.The sensor was inserted into the back of upper arm on (b)(6) 2025.Data was received but not investigated as data will not confirm the issue.Product has been received but is pending evaluation.A follow up report will be submitted upon completion.No injury or medical intervention was reported.
Additional Manufacturer Narrative
(b)(4).
Event or Problem Description
It was reported that a broken or detached wire occurred.The sensor was inserted into the back of upper arm on (b)(6) 2025.The allegation was confirmed due to the finding of a broken sensor wire.The probable cause could not be determined.No injury or medical intervention was reported.

• Brand Name: STELO GLUCOSE BIOSENSOR SYSTEM
• Common Device Name: CONTINUOUS GLUCOSE MONITOR
• Manufacturer (Section D): DEXCOM, INC.; 6340 sequence dr.; san diego CA 92121
• Manufacturer Contact: ashley spoto ; 6340 sequence dr.; san diego, CA 92121 ; 8582000200
• MDR Report Key: 22936486
• Report Number: 3004753838-2025-242360
• Device Sequence Number: 18615104
• Product Code: SAF
• UDI-Device Identifier: 00386270004338
• UDI-Public: (01)00386270004338(11)250401(17)260930(10)1725114001
• Combination Product (Y/N): N
• Initial Reporter State: CA
• Initial Reporter Country: US
• PMA/510(K) Number: K234070
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Consumer
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 09/11/2025

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: Lay User/Patient
• Device Expiration Date: 09/30/2026
• Device Model Number: 9500-174
• Device Catalogue Number: STP-XN-001
• Device Lot Number: 1725114001
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 08/13/2025
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 08/07/2025
• Supplement Date Received by Manufacturer: 09/08/2025
• Initial Report FDA Received Date: 09/02/2025
• Supplement Report FDA Received Date: 09/11/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 04/01/2025
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Patient Age: 65 YR
• Patient Sex: Unknown