# K921452: Acoustic Rhinometer

- Pathway: 510(k) (Traditional)
- Applicant: Hood Laboratories
- Decided: Jul 8, 1993 after 469 days
- Product code: BXQ (Rhinoanemometer (Measurement Of Nasal Decongestion))
- Device class: 2
- Regulation: 21 CFR 868.1800
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

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

## Predicates on the family tree (from the FDA summary)
- None. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

## Most influential descendants
- K170071: SGS ECCOVISIONTM Pharyngometer, SGS ECCOVISIONTM Rhinometer, SGS ECCOVISIONTM Rhino/Pharyngometer (2017), 1 descendant of its own
- K221892: Visionair (2022), 0 descendants of its own

Source page: https://510kreport.com/device/K921452
Methodology: https://510kreport.com/methodology