# K024023: Essex High Pressure (HP) Ocd and Essex Escort Pneumatic Conserver

- Pathway: 510(k) (Traditional)
- Applicant: Essex Medical Systems Plus
- Decided: Oct 1, 2003 after 300 days
- Product code: NFB (Conserver, Oxygen)
- Device class: 2
- Regulation: 21 CFR 868.5905
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
3 later devices descend from it; 1 cites it directly.
0 of 4 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA’s file for it is a 510(k) statement, which names no predicate.

## Most influential descendants
- K090421: Model 350G Gas Conserver (2009), 2 descendants of its own
- K221014: Effortless Oxygen Conserver System Models Effortless Pro and Effortless Mobile (2022), 0 descendants of its own
- K200401: Apogee (2020), 0 descendants of its own

## Indications for use
The Essex High Pressure (HP) OCD and Essex Escort Pneumatic Conserver are used to deliver a prescribed flow of gas to the patient while conserving gas, by sensing the patient inhalation cycle and supplying gas only during that phase of breathing.

Source page: https://510kreport.com/device/K024023
Methodology: https://510kreport.com/methodology