MAUDE Adverse Event Report: Beta Bionics, Inc. iLet Bionic Pancreas; ALTERNATE CONTROLLER ENABLED INSULIN INFUSION PUMP

Model Number	BB1001
Medical Device Problem Code	Insufficient Device Problem Information (3190)
Health Effect - Clinical Code	Hyperglycemia (1905)
Date of Event	09/12/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that a user experienced hyperglycemia while using an ilet pump, with blood glucose rising above 300 mg/dl after a recent supply change and trending down following a full supply replacement; the user reported no device alarms, no infusion set or cartridge issues, and no non-ilet factors other than acute stress, and the medical device problem and device component details were not fully characterized due to insufficient information.Symptoms included hyperglycemia.Outcomes included no health consequences or impact.Investigation included interviews and analysis of information provided by the user or third party.Investigation of this case revealed no findings available, with insufficient information regarding a device problem or specific component involvement.It was concluded, based on previously established findings for similar reports, that the cause was not established.If the device is returned, a physical evaluation will be performed, and a supplemental will be submitted.

• Brand Name: iLet Bionic Pancreas
• Common Device Name: ALTERNATE CONTROLLER ENABLED INSULIN INFUSION PUMP
• Manufacturer (Section D): Beta Bionics, Inc.; 11 hughes; irvine CA 92618
• Manufacturer (Section G): Beta Bionics, Inc.; 11 hughes; irvine CA 92618
• Manufacturer Contact: jared fukushima ; 11 hughes; irvine, CA 92618 ; +1(949)288-8350
• MDR Report Key: 50941667
• Report Number: 3019004087-2026-68316
• Device Sequence Number: 9589140
• Product Code: QFG
• UDI-Device Identifier: 00850050080206
• UDI-Public: 00850050080206
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: K231485
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Consumer
• Type of Report: Initial
• Report Date (Section B): 09/29/2026

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 Model Number: BB1001
• 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: 09/12/2026
• Initial Report FDA Received Date: 09/30/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 05/15/2024
• 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: Reuse
• Patient Sequence Number: 1
• Patient Age: 78 YR
• Patient Sex: Female