# K901610: Sullivan Variable Stiffness Cable

- Pathway: 510(k) (Traditional)
- Applicant: Wilson-Cook Medical, Inc.
- Decided: Jun 29, 1990 after 84 days
- Product code: FDF (Colonoscope And Accessories, Flexible/Rigid)
- Device class: 2
- Regulation: 21 CFR 876.1500
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
2 later devices descend from it; 1 cites it directly.
0 of 3 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
- K051068: Zutron Colonoscope Stiffening Device (2005), 1 descendant of its own
- K251204: FUJIFILM Stiffening Wire Device (SW-2000) (2025), 0 descendants of its own

Source page: https://510kreport.com/device/K901610
Methodology: https://510kreport.com/methodology