# K851958: Rotatable Polypectomy Snare Pos-1

- Pathway: 510(k) (Traditional)
- Applicant: Wilson-Cook Medical, Inc.
- Decided: Jul 25, 1985 after 83 days
- Product code: KNS (Unit, Electrosurgical, Endoscopic (With Or Without Accessories))
- Device class: 2
- Regulation: 21 CFR 876.4300
- Recalls of this device: 3 (0 Class I)
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
12 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)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K050294: Cook Ireland Sonnet Polypectomy Snare (2005), 9 descendants of its own
- K070315: Lina Loop, Models: EL-160-4, EL-160-8, EL-200-4, EL-200-8 (2007), 7 descendants of its own
- K111059: Gyrus Acmil Bipolarlaproscopic Loop (PKS Bill) (2011), 3 descendants of its own
- K173673: AcuSnare Polypectomy Snare (2018), 1 descendant of its own
- K122605: PKS Bill (2012), 1 descendant of its own

## Recalls of this device
- Jan 4, 2019 · Class II · Z-1132-2019: Complaints of the snare loop not completely retracting and/or misshaping of the snare loop.
- Jan 21, 2009 · Not classified · Z-1059-2009: The snare head is hexagonal but the handle and packaging indicate an oval reorder number.
- Apr 21, 2004 · Not classified · Z-0906-04: The snares inside the box labeled SASM-1 may actually be ASM-1 devices. The individual pouches may be correctly labeled ASM.

Source page: https://510kreport.com/device/K851958
Methodology: https://510kreport.com/methodology