# K922322: Alphatec 3.5MM  Znnulated Cortical Lag Screw

- Pathway: 510(k) (Traditional)
- Applicant: Alphatec Mfg., Inc.
- Decided: Aug 5, 1992 after 79 days
- Product code: HWC (Screw, Fixation, Bone)
- 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
No predicates in its family tree.
242 later devices descend from it; 1 cites it directly.
0 of 243 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
- K013534: Self-Countersinking Bone Screw (2001), 241 descendants of its own
- K024086: Propeller Head Small Cannulated Screw System (2003), 171 descendants of its own
- K082874: Biodrive Cannulated Screw System (2009), 168 descendants of its own
- K093629: Solitaire and Solitaire Peek Anterior Spinal System (2010), 143 descendants of its own
- K113796: Solitaire-C Cervical Spacer System (2012), 142 descendants of its own

Source page: https://510kreport.com/device/K922322
Methodology: https://510kreport.com/methodology