MAUDE Adverse Event Report: INOGEN, INC. INOGEN ONE G3 HIGH FLOW PORTABLE OXYGEN CONCENTRATOR

Model Number	IO-300
Medical Device Problem Code	Failure to Deliver (2338)
Health Effect - Clinical Code	Low Oxygen Saturation (2477)
Date of Event	06/09/2026
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
B3: date of event is estimated.The return reason of oxygen error is confirmed, since zeolite is found contaminated which possibly caused when it absorbs moisture.
Event or Problem Description
It was reported that when the patient went on a trip, the patient's device stopped working at a hotel.Later, the patient's oxygen levels had dropped to 69% while using the device.As a result, the patient's daughter called 911 where the patient was taken to the hospital.The patient was not admitted to the hospital, but was put on observation until a replacement device was received.Patient has since received their replacement device and left the hospital.

• Brand Name: INOGEN ONE G3 HIGH FLOW PORTABLE OXYGEN CONCENTRATOR
• Common Device Name: INOGEN ONE G3 HIGH FLOW PORTABLE OXYGEN CONCENTRATOR
• Manufacturer (Section D): INOGEN, INC.; 600 shiloh rd; plano TX 75074
• Manufacturer (Section G): INOGEN, INC.; 600 shiloh rd; plano TX 75074
• Manufacturer Contact: greg porter ; 600 shiloh rd; plano, TX 75074
• MDR Report Key: 25653186
• Report Number: 3004672275-2026-00176
• Device Sequence Number: 5903436
• Product Code: CAW
• UDI-Device Identifier: 00817131020063
• UDI-Public: (01)00817131020063
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: K032818
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Other,Consumer
• Initial Reporter Occupation: Non-Healthcare Professional
• Remedial Action: Replace
• Type of Report: Initial
• Report Date (Section B): 06/29/2026

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?: Yes
• Operator of Device: Lay User/Patient
• Device Model Number: IO-300
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 06/24/2026
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 06/09/2026
• Initial Report FDA Received Date: 06/29/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 08/27/2020
• 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: Unknown
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Life Threatening; Other
• Patient Sex: Unknown