510(k) · Cleared
ClearedAirLife DuoTherm™ Humidification System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Vyaire Medical, Inc. · BTT Humidifier, Respiratory Gas, (Direct Patient Interface)
Cleared on Aug 10, 2023 as substantially equivalent to K033710 (Fisher & Paykel Healthcare, Ltd., 2004) after a 90-day review. Its family tree reaches back 5 generations to 1992.
- Decided
- Aug 10, 2023
- Review
- 90 days
- Class
- Class II
- Product code
- BTT
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 5 generations to K913368 (1992). 9 ancestors in all, the oldest K902506 (1991). No later device cites it as a predicate yet.
- Root · 5 generations backK913368 Models MR700/MR720/MR730 Dual Servo Resp Humid AccFisher & Paykel Electronics, Ltd. · 1992
- 4 generations backK953392 HC500 Servo-Controlled Heated Respiratory Humidifier (& Accessories)Fisher & Paykel Electronics, Ltd. · 1996
- 3 generations backK983112 Respiratory Humidifier, Model # MR850Fisher & Paykel Healthcare, Ltd. · 1998 · Recalled
- 2 generations backK020332 Respiratory Humidifier, Model MR850Fisher & Paykel Healthcare, Ltd. · 2003 · Recalled
- 1 generation backK033710 MR850 Respiratory Humidifier, Model MR850JHUFisher & Paykel Healthcare, Ltd. · 2004
- This deviceK231380 AirLife DuoTherm™ Humidification SystemVyaire Medical, Inc. · 2023
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −5 | K913368 | Models MR700/MR720/MR730 Dual Servo Resp Humid Acc | Fisher & Paykel Electronics, Ltd. | 1992 | — |
| −4 | K953392 | HC500 Servo-Controlled Heated Respiratory Humidifier (& Accessories) | Fisher & Paykel Electronics, Ltd. | 1996 | — |
| −3 | K983112 | Respiratory Humidifier, Model # MR850 | Fisher & Paykel Healthcare, Ltd. | 1998 | 5 |
| −2 | K020332 | Respiratory Humidifier, Model MR850 | Fisher & Paykel Healthcare, Ltd. | 2003 | 1 |
| −1 | K033710 | MR850 Respiratory Humidifier, Model MR850JHU | Fisher & Paykel Healthcare, Ltd. | 2004 | — |
| 0 (this device) | K231380 | AirLife DuoTherm™ Humidification System | Vyaire Medical, Inc. | 2023 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1994 | 1 | 0 |
| 2000 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in BTT? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new BTT device
- #1 K222197 F&P Optiflow Junior 2/2+ Nasal Cannula…score 16.8 · 10 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K033710 | MR850 Respiratory Humidifier, Model MR850JHUSummary page 6…ary Predicate Device Device Name 510(k) Number Decision Date MR850 Respiratory Humidifier, Model MR850JHU K033710 April 13, 2004 Reference Devices Device Name… | 2004 |
| † | K913368 | Models MR700/MR720/MR730 Dual Servo Resp Humid Acc | 1992 |
| † | K160764 | AirLife Autofill Humidification Chamber | 2016 |
| † | K153234 | AirLife Adult Heated Wire Circuit | 2016 |
| † | K170378 | AirLife Adult Heated Wire BiPAP/NIV Circuit | 2017 |
| † | K151303 | AirLife Infant Heated Wire Circuit | 2016 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 31 years and passes through 3 companies; a new generation was cleared every 4.2 years on median.
- 2 of the 9 ancestors have a recall of any class.
- 5 other devices also cite its predicate K033710.
How does its category compare?
All BTT devicesBTT Humidifier, Respiratory Gas, (Direct Patient Interface): FDA decisions, review times, recalls and adverse event reports over 20 years. 2023, this device’s year, is highlighted.
FDA decisions per year · BTT
4in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · BTT
104in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · BTT
1in 2025
Class I (4 since 2007) Class II/III not classified
Adverse event reports per year · BTT
1,743in 2025
MAUDE reports naming product code BTT, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 6 | 73 | 1 | 365 |
| 2008 | 4 | 199 | 1 | 456 |
| 2009 | 1 | — | 0 | 558 |
| 2010 | 4 | 113 | 2 | 562 |
| 2011 | 3 | 116 | 1 | 665 |
| 2012 | 2 | — | 0 | 583 |
| 2013 | 6 | 171 | 0 | 718 |
| 2014 | 7 | 231 | 5 (4) | 718 |
| 2015 | 1 | — | 0 | 670 |
| 2016 | 3 | 157 | 0 | 1,094 |
| 2017 | 3 | 303 | 0 | 1,007 |
| 2018 | 2 | — | 0 | 918 |
| 2019 | 1 | — | 0 | 894 |
| 2020 | 2 | — | 0 | 1,188 |
| 2021 | 2 | — | 0 | 1,510 |
| 2022 | 3 | 290 | 0 | 749 |
| 2023 | 7 | 258 | 0 | 716 |
| 2024 | 7 | 219 | 0 | 501 |
| 2025 | 4 | 104 | 1 | 1,743 |
| 2026 | 4 | 184 | 1 | — |
What is it indicated for?
The AirLife DuoTherm™ Heated Humidifier is intended to add moisture to, and to warm, the breathing gases for administration to a patient. Gases available for medical use do not contain sufficient moisture and may damage or irritate the respiratory tract, or desiccate secretions of patients whose supraglottic airways have been bypassed. This product is non-sterile, reusable, and intended to be used in professional healthcare environments under the…
Read the full statement (496 words)
The AirLife DuoTherm™ Heated Humidifier is intended to add moisture to, and to warm, the breathing gases for administration to a patient. Gases available for medical use do not contain sufficient moisture and may damage or irritate the respiratory tract, or desiccate secretions of patients whose supraglottic airways have been bypassed. This product is non-sterile, reusable, and intended to be used in professional healthcare environments under the supervision of a licensed healthcare practitioner.
The AirLife DuoTherm™ Humidification Chamber is intended to hold water required to humidify breathing gases delivered to patients ranging from neonates to adults using a heated humidifier. The product is a single use device, non-sterile, and used in professional healthcare environments under the supervision of a licensed healthcare practitioner.
The AirLife DuoTherm™ Neonate Heated-Wire Circuits are intended to deliver and warm breathing gases before they enter the patient's airway. The Neonate Heated-Wire Circuits are used with a pediatric population, specifically the neonate (birth to 28 days) and infant (29 days to 2 years) pediatric subgroups with an ideal body weight of 0.5 to 8kg that requires mechanical ventilation, positive pressure breathing or general medical gases, respectively. The Neonate Heated-Wire Circuits are used for flow rates greater than 1 LPM. The product is single patient use, non-sterile, and used in professional healthcare environments under the supervision of a licensed healthcare practitioner.
The AirLife DuoTherm™ Pediatric Heated-Wire Circuits are intended to deliver and warm breathing gases before they enter the patient's airway. The Pediatric Heated-Wire Circuits are used with the pediatric patient population, specifically infant (29 days to 2 years) and children (2 years to 12 years) with an ideal body weight of 6 to 42kg that requires mechanical ventilation, positive pressure breathing or general medical gases, respectively. The Pediatric Heated-Wire Circuits are used for flow rates greater than 2 LPM. The product is single use, non-sterile, and used in professional healthcare environments under the supervision of a licensed healthcare practitioner.
The AirLife DuoTherm™ Adult Heated-Wire Circuits are intended to deliver and warm breathing gases before they enter the patient's airway. The Adult Heated-Wire Circuits are used with the adult population and pediatric population, specifically those with an ideal body weight of 30kg or above, that requires mechanical ventilation, positive pressure breathing or general medical gases, respectively. The Adult Heated-Wire Circuits are used for flow rates greater than 3 LPM. The product is single-use, non-sterile, and used in professional healthcare environments under the supervision of a licensed healthcare practitioner.
The AirLife DuoTherm™ Adult Heated-Wire NIV Circuit is intended to deliver and warm breathing gases before they enter the patient's airway. The Adult Heated-Wire NIV Circuit is used with the spontaneously breathing adult population (>21 years), specifically those with an ideal body weight of 30kg or above, that benefit from high flow therapy. The Adult Heated-Wire NIV Circuits are used for flow rates greater than 5 LPM. The product is single-use, non-sterile, and used in professional healthcare environments under the supervision of a licensed healthcare practitioner.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K231380 · printed Nov 6, 2026
Cite this page
510(k) Report. “K231380: AirLife DuoTherm™ Humidification System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K231380
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026