510(k) Report

510(k) · Cleared

Cleared

Web II Memory Extraction Basket or Memory II Double Lumen Extraction Basket, Memory 5 Fr. Soft Wire Baskets or Memory Helical Stone Extractor, Memory Eight Wire Baskets or Memory Hard Wire Baskets, Fusion Wire Guided Extraction Basket, Non-Lithotripsy Extraction Basket

K171969510(k) TraditionalCleared Mar 28, 2018271-day reviewClass II21 CFR 876.5010

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

Wilson-Cook Medical, Inc. · LQR Dislodger, Stone, Biliary

Cleared on Mar 28, 2018 as substantially equivalent to K851965 (Wilson-Cook Medical, Inc., 1985) after a 271-day review. Its family tree reaches back 1 generation to 1985. 5 later devices descend from it.

Decided
Mar 28, 2018
Review
271 days
Class
Class II
Product code
LQR
Recalls
None
Predicates
1

Its longest line of descent runs back 1 generation to K851965 (1985). 5 later devices descend from it, 4 citing it directly.

Descendants, by year cleared 2018: 1 descendant cleared2023: 1 descendant cleared2020: 1 descendant cleared2024: 1 descendant cleared2026: 1 descendant clearedK851965 · Wilson-Cook Stone Extractor · Wilson-Cook Medical, Inc. · 19851990200020102020
Descendants, by generation 1 generation forward: 4 descendants2 generations forward: 1 descendant K851965 · Wilson-Cook Stone Extractor · Wilson-Cook Medical, Inc. · 19850
  1. Root · 1 generation backK851965 Wilson-Cook Stone ExtractorWilson-Cook Medical, Inc. · 1985
  2. This deviceK171969 Web II Memory Extraction Basket or Memory II Double Lumen Extraction…Wilson-Cook Medical, Inc. · 2018
  3. Descendant · cites it directly · 1 of its ownK201509 Disposable Stone Extraction basketHangzhou AGS MedTech Co., Ltd. · 2020
  4. Descendant · 2 generations on · 0 of its ownK253056 Disposable Stone Extraction BasketZhejiang Soudon Medical Technology Co., Ltd. · 2026
  5. Descendant · cites it directly · 0 of its ownK243471 Extraction BasketMicro-Tech (Nanjing) Co., Ltd. · 2024
  6. Descendant · cites it directly · 0 of its ownK230598 Stone Extraction BasketsJiangsu Vedkang Medical Science and Technology Co., Ltd. · 2023
  7. Descendant · cites it directly · 0 of its ownK182381 Wilson-Cook Mini BasketWilson-Cook Medical, Inc. · 2018

Most influential descendants

Showing 5 of 5 · See all
  • K201509Disposable Stone Extraction basketHangzhou AGS MedTech Co., Ltd. · 2020 · cites it directly1descendant
  • K253056Disposable Stone Extraction BasketZhejiang Soudon Medical Technology Co., Ltd. · 2026 · 2 generations on0descendants
  • K243471Extraction BasketMicro-Tech (Nanjing) Co., Ltd. · 2024 · cites it directly0descendants
  • K230598Stone Extraction BasketsJiangsu Vedkang Medical Science and Technology Co., Ltd. · 2023 · cites it directly0descendants
  • K182381Wilson-Cook Mini BasketWilson-Cook Medical, Inc. · 2018 · cites it directly0descendants
View FIG. 1 as a table

Line of descent and top descendants

GenerationNumberDeviceApplicantDecidedRecalls
−1K851965Wilson-Cook Stone ExtractorWilson-Cook Medical, Inc.1985—
0 (this device)K171969Web II Memory Extraction Basket or Memory II Double Lumen Extraction Basket…Wilson-Cook Medical, Inc.2018—
+1K201509Disposable Stone Extraction basketHangzhou AGS MedTech Co., Ltd.2020—
+2K253056Disposable Stone Extraction BasketZhejiang Soudon Medical Technology Co., Ltd.2026—
+1K243471Extraction BasketMicro-Tech (Nanjing) Co., Ltd.2024—
+1K230598Stone Extraction BasketsJiangsu Vedkang Medical Science and Technology Co., Ltd.2023—
+1K182381Wilson-Cook Mini BasketWilson-Cook Medical, Inc.2018—

Descendants by year cleared

Year clearedDevicesWith a Class I recall
201810
202010
202310
202410
202610
FIG. 1 — Lineage of K171969, 1985–2026Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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Notable FDA decisions, review times and new Class I recalls. See an issue.

Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.

Planning a device in LQR? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.

Top candidate predicates for a new LQR device

  1. #1 K253056 Disposable Stone Extraction Basketscore 11.7 · 3 generations · no Class I recall
  2. #2 Held for the reportin the report
  3. #3 Held for the reportin the report
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What was it cleared against? (1)

Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.

TypeNumberDeviceApplicantDecidedRecalls
*K851965Wilson-Cook Stone Extractor
Summary page 4
…vice Class: Class II Review Panel: Gastroenterology-Urology Predicate Device Name: Wilson-Cook Stone Extractor 510(k) Number: K851965 Date: Cleared July 29, 1985 Device Description The Non-Lithotripsy Extraction Basket is a sterile, single use d…
Wilson-Cook Medical, Inc.1985—

Also cleared against K851965: 1 other device →

What descends from it? (5)

4 later devices cite it directly; ranked here by how many devices descend from each in turn.

NumberDeviceApplicantDecidedDescendants
K201509Disposable Stone Extraction basketHangzhou AGS MedTech Co., Ltd.20201
K243471Extraction BasketMicro-Tech (Nanjing) Co., Ltd.20240
K230598Stone Extraction BasketsJiangsu Vedkang Medical Science and Technology Co., Ltd.20230
K182381Wilson-Cook Mini BasketWilson-Cook Medical, Inc.20180

Has anything in its family been recalled? (0 Class I)

No FDA recall names this device.

No ancestor or descendant has a Class I recall.

What does this lineage say?

  • Its one ancestor has no recall.
  • Of its descendants, K201509 (Hangzhou AGS MedTech Co., Ltd., 2020) has gone furthest, with 1 descendant of its own.
  • 1 other device also cites its predicate K851965.

How does its category compare?

All LQR devices

LQR Dislodger, Stone, Biliary: FDA decisions, review times, recalls and adverse event reports over 20 years. 2018, this device’s year, is highlighted.

FDA decisions per year · LQR

1in 2025

2007: 12009: 22013: 12017: 42018: 32019: 12020: 12021: 12023: 12024: 22025: 12026 (partial year): 1
2007high 4 (2017) · low 0 (2008)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · LQR

248in 2018

2017: 148 days median2018: 248 days median
2007high 248 (2018) · low 148 (2017)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · LQR

3in 2009

2009: 3
2007high 3 (2009) · low 0 (2007)2026

Class I (0 since 2007) Class II/III not classified

Adverse event reports per year · LQR

111in 2025

2007: 232008: 42009: 282010: 392011: 472012: 502013: 132014: 212015: 122016: 42017: 112018: 432019: 412020: 512021: 472022: 582023: 712024: 692025: 111
2007high 111 (2025) · low 4 (2008)2025

MAUDE reports naming product code LQR, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
20071—023
20080—04
20092—328
20100—039
20110—047
20120—050
20131—013
20140—021
20150—012
20160—04
20174148011
20183248043
20191—041
20201—051
20211—047
20220—058
20231—071
20242—069
20251—0111
20261—0—

What is it indicated for?

Endoscopic removal of stones in the biliary system and foreign bodies.

Indications for use as stated in the FDA summary.

Also cleared against K851965

1 other device cites the same predicate.

  • K012581Reprocessed Stone Retrieval BasketsSterilmed, Inc. · 20021 recall

More from Wilson-Cook Medical, Inc.

125 FDA decisions under this applicant name. See the company

  • K253302Hemospray Endoscopic Hemostat (HEMO-[X])Wilson-Cook Medical, Inc. · 20261 recall
  • K243568Teslatome Bipolar Sphincterotome; Tesla BiCord Active CordWilson-Cook Medical, Inc. · 20251 recall
  • K213356Entuit PEG, Entuit PEGJWilson-Cook Medical, Inc. · 2022
  • K212323Instinct Plus Endoscopic Clipping DeviceWilson-Cook Medical, Inc. · 20211 recall
  • K201322Entuit Nasal Jejunal Feeding TubeWilson-Cook Medical, Inc. · 2020

Recent decisions in LQR

The LQR category page

  • K253056Disposable Stone Extraction BasketZhejiang Soudon Medical Technology Co., Ltd. · 2026
  • K243807Single Use Retrieval Basket V FG-V421PR/V422PR/V431P/V432POlympus Medical Systems Corp. · 2025
  • K243471Extraction BasketMicro-Tech (Nanjing) Co., Ltd. · 2024
  • K240192Single-use Extraction BasketsScivita Medical Technology Co., Ltd. · 2024
  • K230598Stone Extraction BasketsJiangsu Vedkang Medical Science and Technology Co., Ltd. · 2023

https://510kreport.com/device/K171969 · printed Nov 4, 2026

Cite this page

510(k) Report. “K171969: Web II Memory Extraction Basket or Memory II Double Lumen Extraction Basket, Memory 5 Fr. Soft Wire Baskets or Memory Helical Stone Extractor, Memory Eight Wire Baskets or Memory Hard Wire Baskets, Fusion Wire Guided Extraction Basket, Non-Lithotripsy Extraction Basket.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K171969

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Record history
  • FDA decision record loaded May 2, 2026
  • Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
  • Lineage and recalls computed Nov 3, 2026
  • Page last updated Nov 3, 2026