# K926449: Varian Multileaf Collimator, Release 4.0

- Pathway: 510(k) (Traditional)
- Applicant: Varian Assoc., Inc.
- Decided: May 5, 1995 after 862 days
- Product code: IYE (Accelerator, Linear, Medical)
- Device class: 2
- Regulation: 21 CFR 892.5050
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
71 later devices descend from it; 1 cites it directly.
0 of 72 devices in its family (counting itself) have a Class I recall.

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

## Most influential descendants
- K973889: Varian Multileaf Collimator with Dynamic Arc Therapy Feature (1997), 70 descendants of its own
- K990085: Millennium MLC -120 (1999), 69 descendants of its own
- K050442: Millennium Multi-Leaf Collimator (2005), 67 descendants of its own
- K071992: High-Definition 120 Multileaf Collimator (HD120 MLC) (2007), 64 descendants of its own
- K092871: Trilogy MX (2009), 61 descendants of its own

Source page: https://510kreport.com/device/K926449
Methodology: https://510kreport.com/methodology