MAUDE Adverse Event Report: SENSEONICS INC. EVERSENSE SENSOR; EVERSENSE CONTINUOUS GLUCOSE MONITOR SYSTEM

Model Number	103606-620
Medical Device Problem Code	Imprecision (1307)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	06/11/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The user reported discrepancies between bg and sg readings.Escalation analysis indicated that the observed discrepancies were consistent with situations in which estimated sg values provided by the eversense app were entered as calibrations instead of true bg values.The user was advised to enter only blood glucose meter values obtained via fingerstick when calibrating, as use of estimated values or other sources may affect system performance.Customer care recommended the user to continue using the system and to enter calibrations with the exact value reported by the bg meter and the exact time at which the bg was measured.Further follow up was not possible as the user was unresponsive to multiple communication attempts.As per the data management system (dms) review, the system remained in active use with up-to-date information.
Event or Problem Description
Senseonics was made aware of an incident where user reported an event where the cgm showed results that are different from blood glucometer measurements.No injury or medical intervention was reported.

• Brand Name: EVERSENSE SENSOR
• Common Device Name: EVERSENSE CONTINUOUS GLUCOSE MONITOR SYSTEM
• Manufacturer (Section D): SENSEONICS INC.; 20451 seneca meadows parkway; germantown MD 20876 7005
• Manufacturer (Section G): SENSEONICS INC.; 20451 seneca meadows parkway; germantown MD 20876 7005
• Manufacturer Contact: vallikannu somasundaram ; 20451 seneca meadows parkway; germantown, MD 20876-7005
• MDR Report Key: 25709255
• Report Number: 3009862700-2026-02155
• Device Sequence Number: 14737919
• Product Code: SBA
• UDI-Device Identifier: 00817491024305
• UDI-Public: 00817491024305
• Combination Product (Y/N): Y
• Initial Reporter Country: US
• PMA/510(K) Number: P160048
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Consumer
• Initial Reporter Occupation: Other
• Type of Report: Initial
• Report Date (Section B): 07/03/2026

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: 04/10/2026
• Device Model Number: 103606-620
• Device Catalogue Number: FG-7502-00-301
• Device Lot Number: 02F225S
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 06/11/2026
• Initial Report FDA Received Date: 07/03/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 06/04/2025
• 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: 68 YR
• Patient Sex: Female