MAUDE Adverse Event Report: Tandem Diabetes Care t:slim G4 system; Insulin Infusion Pump

Model Number	4628-003
Medical Device Problem Code	Key or Button Unresponsive/not Working (4063)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	07/18/2026
Type of Reportable Event	Malfunction

• Brand Name: t:slim G4 system
• Common Device Name: 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: 50160330
• Report Number: 3013756811-2026-141813
• Device Sequence Number: 15804384
• Product Code: OYC
• UDI-Device Identifier: 00852162004613
• UDI-Public: (01)00852162004613
• Combination Product (Y/N): N
• Initial Reporter State: KS
• Initial Reporter Country: US
• PMA/510(K) Number: P140015
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Consumer
• Type of Report: Initial
• Report Date (Section B): 08/06/2026

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: 4628-003
• 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: 07/21/2026
• Initial Report FDA Received Date: 08/06/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 01/02/2019
• 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: 30 YR
• Patient Sex: Male
• Patient Weight: 179 LB