# K862923: MR620 Dual Servo Heated Anaesthesia Humidifier

- Pathway: 510(k) (Traditional)
- Applicant: Fisher & Paykel Allied Products, Ltd.
- Decided: Sep 23, 1986 after 53 days
- Product code: BTT (Humidifier, Respiratory Gas, (Direct Patient Interface))
- Device class: 2
- Regulation: 21 CFR 868.5450
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
10 later devices descend from it; 3 cite it directly.
0 of 11 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K092129: Intersurgical Heated Wire Breathing Systems and Humidification Chambers, Model 2026,2026-CH, 2310, 2320, 2330 (2010), 7 descendants of its own
- K110398: Respironics Disposable Heated Wire Circuits (2011), 3 descendants of its own
- K151461: Hybernite RT (2016), 2 descendants of its own
- K140424: Respironics Reusable Heated Tubing (2014), 2 descendants of its own
- K962223: Water Chambers for ST 3000 Heated Humidifier (1997), 1 descendant of its own

Source page: https://510kreport.com/device/K862923
Methodology: https://510kreport.com/methodology