# K171993: Zimmon Needle Knife Papillotome

- Pathway: 510(k) (Traditional)
- Applicant: Wilson-Cook Medical Inc./Cook Endoscopy
- Decided: Aug 17, 2017 after 45 days
- Product code: KNS (Unit, Electrosurgical, Endoscopic (With Or Without Accessories))
- Device class: 2
- Regulation: 21 CFR 876.4300
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K972674 (1997). 1 ancestor in all.
1 later device descends 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)
- K972674: Wilson-Cook Needle Knife Papillotome, Wilson-Cook Medical, Inc. (1997) Summary page 4.

## Most influential descendants
- K252889: Single Use 3-Lumen Needle Knife V (KD-V441M, KD-V451M) (2025), 0 descendants of its own

## Indications for use
These devices are used for accessing the common bile duct when standard methods of cannulation have been exhausted.

Source page: https://510kreport.com/device/K171993
Methodology: https://510kreport.com/methodology