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	Pumping Stopped (1503)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	06/11/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that a cartridge alarm occurred.There was no adverse impact to the customer's blood glucose level.The customer reverted to an alternate method of insulin therapy.

• 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 ; 858 224-6281
• MDR Report Key: 25552973
• Report Number: 3013756811-2026-110781
• Device Sequence Number: 10762402
• Product Code: QFG
• UDI-Device Identifier: 00850006613731
• UDI-Public: (01)00850006613731(22)1006379(11)240703
• Combination Product (Y/N): N
• Initial Reporter State: SC
• Initial Reporter Country: US
• PMA/510(K) Number: K203234
• 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
• Report Date (Section B): 06/18/2026

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: 1006379
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 06/12/2026
• Initial Report FDA Received Date: 06/18/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 03/08/2024
• 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
• Concomitant Medical Products and Therapy/Usage Dates: TANDEM - CARTRIDGE
• Patient Age: 72 YR
• Patient Sex: Female