Portable Therapeutic Liquid Oxygen System 50C-0021-1Recalls & reported problems
Essex Industries, Inc. · The Portable Therapeutic Liquid Oxygen System (PTLOX) is a low pressure portable 10.0 liter liquid oxygen storage and gaseous delivery system, capable of supplying up to 8600 gaseous liters of oxygen at a maximum flow rate of 45 liters per minute at 50 psig. The unit features three quick disconnect outlet ports and comes with an accessory kit containing three 20 foot medical grade hoses, three flow control valves and three humidifier bottles. The three flow control valves can deliver oxygen to three patients at flow rates from .5 to 15 liters per minute. The quick disconnect outlet ports can also supply 50 psi of oxygen to other medical devices. Weighing less than 100 pounds when full, the PTLOX can be carried by two ground support personnel or mounted in an aircraft. The PTLOX requires no external power and uses just two 9-Volt batteries for the quantity indicator. The system has been tested to MIL-STD-810. · Class 2
Data updated Oct 18, 2026 from official FDA records · Editorial policy
- Adverse event reports
- 1
- Deaths reported
- 0
- Injuries reported
- 0
- Recalls naming it
- 0
Summary
The FDA's MAUDE database contains 1 adverse event report that list this exact device (DI 10815363020025), received between Apr 11, 2022 and Apr 11, 2022 — classified as 1 malfunction.
The most frequently reported specific device problem is “Defective Device” (1 report).
Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. What reports can and can't tell you · How this data works · Data updated Oct 18, 2026.
Most reported problems
Device problems
- Defective Device1
- No Pressure1
Patient problems
- Insufficient Information1
Recent adverse event reports
The 1 most recent of 1 reports, in the reporter's own words as published by the FDA.
MalfunctionApr 11, 2022Defective Device; No Pressure
THE LIQUID OXYGEN SYSTEM FAILED, RAN COMPLETELY OUT OF OXYGEN 90 MINUTES INTO A PATIENT FIXED WING TRANSPORT WITH 90 PLUS MINUTES OF THE TRANSPORT REMAINING. THE PATIENT WAS ON ECMO, SO BOTH THE ECMO DEVICE AND VENTILATOR WERE USING OXYGEN. THE CREW HAD TO DIVERT THE FLIGHT TO THE CLOSEST ECMO CAPABLE CENTER AND MANAGE THE PATIENT ON A PORTABLE OXYGEN CYLINDER ON THE AIRCRAFT UNTIL MET AT THE AIRPORT. THE ESSEX INDUSTRIES, INC 10 LITER LIQUID OXYGEN CONVERTOR SYSTEM HAD A PRESSURE RELEASE VALVE/VENT FAILURE SOMETIME DURING THE COURSE OF THE TRANSPORT AND LOST ALL OXYGEN. SENT BACK TO MFG. FOR REPAIR.
Patient problems: Insufficient Information
MAUDE report 14073321 ↗
Sources and updates
- Device record: FDA GUDID, file dated Oct 13, 2026 · View this device in AccessGUDID ↗
- Adverse event reports: FDA MAUDE, file dated Oct 14, 2026 · each report above links to its original FDA record
- Recalls: FDA Medical Device Recalls, file dated Oct 16, 2026
- Page last rebuilt: Oct 18, 2026. Data downloaded through openFDA, which notes it is not validated for clinical or regulatory use.
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