510(k) · Cleared
ClearedWittich Nitinol Stone Basket
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Cook, Inc. · LQR Dislodger, Stone, Biliary
Cleared on Sep 12, 1990 after a 69-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 7 later devices descend from it.
- Decided
- Sep 12, 1990
- Review
- 69 days
- Class
- Class II
- Product code
- LQR
- Recalls
- None
- Predicates
- 0
7 later devices descend from it, 4 citing it directly.
- This deviceK902944 Wittich Nitinol Stone BasketCook, Inc. · 1990
- Descendant · cites it directly · 3 of its ownK173009 NCompass Nitinol Stone ExtractorsCook Incorporated · 2017 · Recalled
- Descendant · 2 generations on · 1 of its ownK203322 SpyGlass Discover Retrieval BasketBoston Scientific Corporation · 2021
- Descendant · 3 generations on · 0 of its ownK240192 Single-use Extraction BasketsScivita Medical Technology Co., Ltd. · 2024
- Descendant · cites it directly · 0 of its ownK171915 Nathanson Transcystic Bile Duct Stone Exploration PackCook Incorporated · 2018
- Descendant · 2 generations on · 0 of its ownK173687 Strange Bile Duct Stone Exploration SetCook Incorporated · 2017 · Recalled
Showing 5 of 7 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 7 · See all- K173009NCompass Nitinol Stone ExtractorsCook Incorporated · 2017 · cites it directly3descendants
- K203322SpyGlass Discover Retrieval BasketBoston Scientific Corporation · 2021 · 2 generations on1descendant
- K240192Single-use Extraction BasketsScivita Medical Technology Co., Ltd. · 2024 · 3 generations on0descendants
- K171915Nathanson Transcystic Bile Duct Stone Exploration PackCook Incorporated · 2018 · cites it directly0descendants
- K173687Strange Bile Duct Stone Exploration SetCook Incorporated · 2017 · 2 generations on0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K902944 | Wittich Nitinol Stone Basket | Cook, Inc. | 1990 | — |
| +1 | K173009 | NCompass Nitinol Stone Extractors | Cook Incorporated | 2017 | 1 |
| +2 | K203322 | SpyGlass Discover Retrieval Basket | Boston Scientific Corporation | 2021 | — |
| +3 | K240192 | Single-use Extraction Baskets | Scivita Medical Technology Co., Ltd. | 2024 | — |
| +1 | K171915 | Nathanson Transcystic Bile Duct Stone Exploration Pack | Cook Incorporated | 2018 | — |
| +2 | K173687 | Strange Bile Duct Stone Exploration Set | Cook Incorporated | 2017 | 1 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2009 | 1 | 0 |
| 2017 | 3 | 0 |
| 2018 | 1 | 0 |
| 2021 | 1 | 0 |
| 2024 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), 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 K253056 Disposable Stone Extraction Basketscore 11.7 · 3 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against?
FDA has not posted a summary or statement for it, so its predicates are not known.
What descends from it? (7)
4 later devices cite it directly; ranked here by how many devices descend from each in turn.
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?
- Of its descendants, K173009 (Cook Incorporated, 2017) has gone furthest, with 3 descendants of its own.
How does its category compare?
All LQR devicesLQR Dislodger, Stone, Biliary: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · LQR
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · LQR
248in 2018
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · LQR
3in 2009
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · LQR
111in 2025
MAUDE reports naming product code LQR, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 1 | — | 0 | 23 |
| 2008 | 0 | — | 0 | 4 |
| 2009 | 2 | — | 3 | 28 |
| 2010 | 0 | — | 0 | 39 |
| 2011 | 0 | — | 0 | 47 |
| 2012 | 0 | — | 0 | 50 |
| 2013 | 1 | — | 0 | 13 |
| 2014 | 0 | — | 0 | 21 |
| 2015 | 0 | — | 0 | 12 |
| 2016 | 0 | — | 0 | 4 |
| 2017 | 4 | 148 | 0 | 11 |
| 2018 | 3 | 248 | 0 | 43 |
| 2019 | 1 | — | 0 | 41 |
| 2020 | 1 | — | 0 | 51 |
| 2021 | 1 | — | 0 | 47 |
| 2022 | 0 | — | 0 | 58 |
| 2023 | 1 | — | 0 | 71 |
| 2024 | 2 | — | 0 | 69 |
| 2025 | 1 | — | 0 | 111 |
| 2026 | 1 | — | 0 | — |
https://510kreport.com/device/K902944 · printed Nov 4, 2026
Cite this page
510(k) Report. “K902944: Wittich Nitinol Stone Basket.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K902944
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Record history
- FDA decision record loaded May 2, 2026
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026