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

Model Number	102208-610
Medical Device Problem Code	Imprecision (1307)
Health Effect - Clinical Code	Hypoglycemia (1912)
Date of Event	12/13/2022
Type of Reportable Event	Serious Injury
Event or Problem Description
On (b)(6) 2022, senseonics was made aware of an incident where user experienced false hypoglycemia due inaccuracies in sensor readings.
Additional Manufacturer Narrative
The manufacturer is currently performing an investigation and will provide the results with the supplemental report.
Additional Manufacturer Narrative
Based on the investigation analysis, the first reported event at 3:18 am est on (b)(6) 2022, demonstrated the inherent lag in the sensing technology of the system, and that the sensor glucose eventually caught up to the calibration (capillary) entryafter 3-4 sensor readings.The second reported event at 2:02 am est on (b)(6), 2022, could not be confirmed as there was no calibration entry at the time of the reported event.The sensor was inserted on (b)(6) 2022 and the reported events happened during the initial few days after sensor insertion.During the initial settling period, there could be chances of temporary mismatch, which would eventually normalize as the sensor stabilizes.Once the sensor stabilized after insertion, the system began performing within expectations and there was better accuracy between the sensor readings and fingerstick measurements.User was not symptomatic and did not require any medical or self-assistance.The user is currently using the system with up-todate information.H3.Device evaluated by manufacturer? yes.H6.Investigation findings updated to 114.H6.Investigation conclusions updated to 4315.

• Brand Name: EVERSENSE TRANSMITTER
• Common Device Name: EVERSENSE CONTINUOUS GLUCOSE MONITOR SYSTEM
• Manufacturer (Section D): SENSEONICS INC.; 20451 seneca meadows parkway; germantown MD 20875 7005
• Manufacturer (Section G): SENSEONICS INC.; 20451 seneca meadows parkway; germantown MD 20875 7005
• Manufacturer Contact: vallikannu somasundaram ; 20451 seneca meadows parkway; germantown, MD 20875-7005
• MDR Report Key: 16102928
• Report Number: 3009862700-2023-00002
• Device Sequence Number: 7654610
• Product Code: QHJ
• UDI-Device Identifier: 00817491022929
• UDI-Public: 817491022929
• Combination Product (Y/N): Y
• Initial Reporter Country: US
• PMA/510(K) Number: P160048
• 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): 12/13/2022

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: Lay User/Patient
• Device Expiration Date: 01/06/2023
• Device Model Number: 102208-610
• Device Catalogue Number: FG-5901-01-001
• Device Lot Number: 129895
• 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: 12/13/2022
• Supplement Date Received by Manufacturer: 12/13/2022
• Initial Report FDA Received Date: 01/05/2023
• Supplement Report FDA Received Date: 02/04/2023
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 01/06/2022
• 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: Initial
• Patient Sequence Number: 1
• Patient Age: 47 YR
• Patient Sex: Female