# K944736: VSP (Variable Screw Placement)

- Pathway: 510(k) (Traditional)
- Applicant: Acromed Corp.
- Decided: May 5, 1995 after 221 days
- Product code: MNH (Orthosis, Spondylolisthesis Spinal Fixation)
- Device class: 2
- Regulation: 21 CFR 888.3070
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
598 later devices descend from it; 2 cite it directly.
1 of 599 devices in its family (counting itself) has 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
- K981274: Acromed Timx Plate Based Low Back System (1998), 597 descendants of its own
- K010576: Monarch Spine System (2001), 596 descendants of its own
- K024348: Monarch Spine System (2003), 578 descendants of its own
- K021148: Monarch Spine System Commercially Pure Titanium Spinal Rod (2002), 496 descendants of its own
- K052131: Expedium Spine System 5.5MM Commerically Pure Titanium Spinal Rods (2005), 495 descendants of its own

Source page: https://510kreport.com/device/K944736
Methodology: https://510kreport.com/methodology