MAUDE Adverse Event Report: Tandem Diabetes Care t:slim X2 Insulin Pump with Control-IQ Technology; Alternate Controller Enabled Insulin Infusion Pump

Model Number	1000354
Medical Device Problem Code	Obstruction of Flow (2423)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	08/18/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that occlusion alarms occurred.There was no reported impact to the customer¿s blood glucose level.Customer declined follow-up from technical support, and no additional information was received regarding the outcome of the event.
Additional Manufacturer Narrative
In use at the time of the event: cgm model: unknown mobile os: unknown / unknown / unknown / unknown.

• Brand Name: t:slim X2 Insulin Pump with Control-IQ Technology
• Common Device Name: Alternate Controller Enabled Insulin Infusion Pump
• Manufacturer (Section D): Tandem Diabetes Care; 12400 high bluff drive; san diego CA 92130
• Manufacturer Contact: john connell ; 12400 high bluff drive; san diego, CA 92130 ; +1(858)224-6281
• MDR Report Key: 50380027
• Report Number: 3013756811-2026-152427
• Device Sequence Number: 14852739
• Product Code: QFG
• UDI-Device Identifier: 00850006613793
• UDI-Public: (01)00850006613793(22)1006408(11)240614
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: K201214
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Consumer
• Type of Report: Initial
• Report Date (Section B): 08/21/2026

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: 1000354
• Device Catalogue Number: 1006408
• 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: Not provided
• Initial Report FDA Received Date: 08/21/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 06/14/2024
• 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: 27 YR
• Patient Sex: Unknown