# K151818: SImmetry Sacroiliac Joint Fusion System

- Pathway: 510(k) (Special)
- Applicant: Zyga Technology, Inc.
- Decided: Aug 5, 2015 after 30 days
- Product code: OUR (Sacroiliac Joint Fixation)
- Device class: 2
- Regulation: 21 CFR 888.3040
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 7 generations back to K903810 (1990). 15 ancestors in all.
42 later devices descend from it; 4 cite it directly.
0 of 58 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K141549: SImmetry Sacroiliac Joint Fusion System, Zyga Technology, Inc. (2015) Summary page 4.

## Most influential descendants
- K183342: SambaScrew 3D SI Fusion System (2019), 31 descendants of its own
- K200696: FIREBIRD SI Fusion System (2020), 29 descendants of its own
- K201664: FIREBIRD SI Fusion System (2020), 26 descendants of its own
- K203138: FIREBIRD SI Fusion System (2020), 25 descendants of its own
- K210667: FIREBIRD SI Fusion System (2021), 19 descendants of its own

## Indications for use
The SImmetry® Sacroiliac Joint Fusion System is intended for sacroiliac joint fusion for conditions including sacroiliac joint disruptions and degenerative sacroiliitis.

Source page: https://510kreport.com/device/K151818
Methodology: https://510kreport.com/methodology