# K040983: Lorenz Self-Drilling Imf Screw

- Pathway: 510(k) (Special)
- Applicant: Walter Lorenz Surgical, Inc.
- Decided: May 5, 2004 after 20 days
- Product code: DZE (Implant, Endosseous, Root-Form)
- Device class: 2
- Regulation: 21 CFR 872.3640
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 3 generations back to K820944 (1982). 5 ancestors in all.
7 later devices descend from it; 2 cite it directly.
0 of 13 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K983728: Lorenz Imf Screw, Walter Lorenz Surgical, Inc. (1999) Summary page 3.

## Most influential descendants
- K143336: Biomet Microfixation OmniMax MMF System (2015), 5 descendants of its own
- K173320: KLS Martin L1 MMF System (2018), 2 descendants of its own
- K241314: KLS Martin Oral-Max Implants MR Conditional (bundled) (2024), 1 descendant of its own
- K152326: Biomet Microfixation OmniMax MMF System (2015), 1 descendant of its own
- K260137: KLS Martin IPS Oral-Max Implants - MR Conditional; Individual Patient Solutions - Ti (IPS-Ti); Individual Patient Solutions - PEEK (IPS-PEEK); KLS Martin Individual Patient Solutions (2026), 0 descendants of its own

## Indications for use
The Lorenz: Self-Drilling IMF Screw is intended for use as a bone screw in temporary fixation of the maxilla and mandible, providing indirect stabilization of fractures of the maxilla and/or the mandible.

Source page: https://510kreport.com/device/K040983
Methodology: https://510kreport.com/methodology