# K990339: Sonos 5500 Imaging System M2424A Version B.O

- Pathway: 510(k) (Traditional)
- Applicant: Hewlett-Packard Co.
- Decided: Feb 18, 1999 after 15 days
- Product code: IYN (System, Imaging, Pulsed Doppler, Ultrasonic)
- Device class: 2
- Regulation: 21 CFR 892.1550
- Recalls of this device: 1 (0 Class I)
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 3 generations back to K935009 (1994). 9 ancestors in all.
189 later devices descend from it; 1 cites it directly.
0 of 199 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K972348: HP Endovaginal/Endorectal Probe, HP Image Point Ultrasound System, Hewlett-Packard Co. (1997) Summary page 1.
- K971116: Sonos 5500 Imaging System, Hewlett-Packard Co. (1998) Summary page 1.
- K973767: Harmonic Imaging with Contrast, Acuson Corp. (1997) Summary page 2.

## Most influential descendants
- K072164: DC-6 Diagnostic Ultrasound System (2007), 188 descendants of its own
- K080640: M5 Diagnostic Ultrasound System (2008), 182 descendants of its own
- K081320: DC-3, DC-3T Diagnostic Ultrasound System (2008), 180 descendants of its own
- K083001: M5 Diagnostic Ultrasound System (2008), 179 descendants of its own
- K083505: DC-3/DC-3T Diagnostic Ultrasound System (2008), 178 descendants of its own

## Recalls of this device
- Jul 3, 2025 · Class III · Z-2348-2025: To provide clarification and labelling to define the useful life of ultrasound transducers in the field.

## Indications for use
Diagnostic ultrasound imaging or fluid flow analysis of the human body as follows: Diagnostic Ultrasound Imaging and Doppler Analysis of the human body as follows: Diagnostic Ultrasound Imaging and Doppler Analysis of the human body as follows: Diagnostic Ultrasound Imaging and Doppler Analysis of the human body as follows:

Source page: https://510kreport.com/device/K990339
Methodology: https://510kreport.com/methodology