# K902944: Wittich Nitinol Stone Basket

- Pathway: 510(k) (Traditional)
- Applicant: Cook, Inc.
- Decided: Sep 12, 1990 after 69 days
- Product code: LQR (Dislodger, Stone, Biliary)
- Device class: 2
- Regulation: 21 CFR 876.5010
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
7 later devices descend from it; 4 cite it directly.
0 of 8 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
- K173009: NCompass Nitinol Stone Extractors (2017), 3 descendants of its own
- K203322: SpyGlass Discover Retrieval Basket (2021), 1 descendant of its own
- K240192: Single-use Extraction Baskets (2024), 0 descendants of its own
- K171915: Nathanson Transcystic Bile Duct Stone Exploration Pack (2018), 0 descendants of its own
- K173687: Strange Bile Duct Stone Exploration Set (2017), 0 descendants of its own

Source page: https://510kreport.com/device/K902944
Methodology: https://510kreport.com/methodology