# K992370: Amplaid A724 and A728

- Pathway: 510(k) (Traditional)
- Applicant: Amplifon S.P.A.
- Decided: Sep 20, 1999 after 67 days
- Product code: ETY (Tester, Auditory Impedance)
- Device class: 2
- Regulation: 21 CFR 874.1090
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K903066 (1990). 1 ancestor in all.
1 later device descends 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)
- K903066: Amplaid 770 Admittance Meter, Amplus Corp. (1990) Summary page 1.

## Most influential descendants
- K031978: Amplaid A756 Screening Admittance Meter (2003), 0 descendants of its own

## Indications for use
The Amplaid A724 and A728 are Programmable Admittance Meters which can 1. Evaluate middle ear functions such as otitis media, glue ear, eardrum scar tissues, perform myringotomy status, ossicular chain discontinuity ear canal volume, otosclerosis, stapes fixation. 2. Perform Acoustic reflex test. 3. Determine acoustic reflex threshold 4. Perform reflex decay test. They are intended for use by a qualified/trained audiologist on both adult and pediatric subjects for measurement of acoustic impedance.

Source page: https://510kreport.com/device/K992370
Methodology: https://510kreport.com/methodology