MAUDE Adverse Event Report: Inogen Inc. Inogen One G5 Portable Oxygen Concentrator

Model Number	IO-500
Medical Device Problem Codes	Premature Discharge of Battery (1057); Insufficient Flow or Under Infusion (2182)
Health Effect - Clinical Codes	Dyspnea (1816); Low Oxygen Saturation (2477)
Date of Event	05/29/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that the patient's unit had stopped working earlier than expected.As a result, the patient had trouble breathing.Troubleshooting did not resolve the issue.The patient's family wanted to explore all their options before deciding on a solution.No additional information is available at this time.
Additional Manufacturer Narrative
B3 date of event is estimated.E2 initial reporter address and city are unknown.The unit was not returned for evaluation.

• Brand Name: Inogen One G5 Portable Oxygen Concentrator
• Common Device Name: Inogen One G5 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: 50893018
• Report Number: 3004672275-2026-00311
• Device Sequence Number: 14959160
• Product Code: CAW
• UDI-Device Identifier: 00817131020162
• UDI-Public: (01)00817131020162
• Combination Product (Y/N): N
• Initial Reporter State: NV
• Initial Reporter Country: US
• PMA/510(K) Number: K032818
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other,Consumer
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 09/24/2026

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-500
• 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: 09/01/2026
• Initial Report FDA Received Date: 09/25/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 03/01/2021
• 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
• Patient Sex: Unknown