510(k) · Cleared
ClearedExtra Large Check-Flo Introducer
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Cook Incorporated · DYB Introducer, Catheter
Cleared on Feb 16, 2021 as substantially equivalent to K093791 (W. L. Gore & Associates, Inc., 2010) after a 62-day review. Its family tree reaches back 3 generations to 2003.
- Decided
- Feb 16, 2021
- Review
- 62 days
- Class
- Class II
- Product code
- DYB
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 3 generations to K032073 (2003). 4 ancestors in all, the oldest K013282 (2001). No later device cites it as a predicate yet.
- Root · 3 generations backK032073 Gore Introducer Sheath with Silicone Pinch ValveW. L. Gore & Associates, Inc. · 2003
- 2 generations backK082356 Gore Introducer Sheath with Silicone Pinch ValveW. L. Gore & Associates, Inc. · 2008
- 1 generation backK093791 Gore Dryseal SheathW. L. Gore & Associates, Inc. · 2010
- This deviceK203670 Extra Large Check-Flo IntroducerCook Incorporated · 2021
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −3 | K032073 | Gore Introducer Sheath with Silicone Pinch Valve | W. L. Gore & Associates, Inc. | 2003 | — |
| −2 | K082356 | Gore Introducer Sheath with Silicone Pinch Valve | W. L. Gore & Associates, Inc. | 2008 | — |
| −1 | K093791 | Gore Dryseal Sheath | W. L. Gore & Associates, Inc. | 2010 | — |
| 0 (this device) | K203670 | Extra Large Check-Flo Introducer | Cook Incorporated | 2021 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2001 | 1 | 0 |
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 DYB? 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 DYB device
- #1 K251051 AuST Steerable Sheathscore 18.0 · 10 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
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.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K093791 | Gore Dryseal SheathSummary page 4…gulation: 21 CFR §870.1340, Product Code DYB Device Class/Classification Panel: Class II, Cardiovascular Predicate Device: The GORE® DrySeal Sheath (K093791) was cleared for commercial distribution on March 22, 2010.… | 2010 |
| † | K160254 | GORE DrySeal Flex Introducer Sheath | 2016 |
| † | K171866 | Sentrant Introducer Sheath with Hydrophilic Coating | 2017 |
What descends from it?
No later submission names this one as a predicate yet.
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?
- The line of descent spans 18 years and passes through 2 companies; a new generation was cleared every 5.0 years on median.
- None of the 4 ancestors has a recall.
- 5 other devices also cite its predicate K093791.
How does its category compare?
All DYB devicesDYB Introducer, Catheter: FDA decisions, review times, recalls and adverse event reports over 20 years. 2021, this device’s year, is highlighted.
FDA decisions per year · DYB
16in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · DYB
63in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · DYB
3in 2025
Class I (48 since 2007) Class II/III not classified
Adverse event reports per year · DYB
4,539in 2025
MAUDE reports naming product code DYB, 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 | 12 | 95 | 15 | 316 |
| 2008 | 17 | 37 | 9 | 423 |
| 2009 | 14 | 52 | 25 | 399 |
| 2010 | 18 | 123 | 18 | 445 |
| 2011 | 17 | 100 | 4 | 628 |
| 2012 | 22 | 128 | 3 | 898 |
| 2013 | 26 | 118 | 5 (1) | 743 |
| 2014 | 30 | 122 | 2 | 780 |
| 2015 | 17 | 129 | 2 (1) | 913 |
| 2016 | 19 | 95 | 45 (3) | 1,234 |
| 2017 | 24 | 70 | 22 (1) | 1,672 |
| 2018 | 19 | 156 | 1 | 1,903 |
| 2019 | 18 | 47 | 2 | 2,450 |
| 2020 | 9 | 49 | 21 (21) | 2,465 |
| 2021 | 12 | 78 | 6 | 2,835 |
| 2022 | 13 | 143 | 2 | 4,084 |
| 2023 | 15 | 55 | 10 | 3,775 |
| 2024 | 18 | 56 | 2 | 3,931 |
| 2025 | 16 | 63 | 3 | 4,539 |
| 2026 | 17 | 59 | 23 (21) | — |
What is it indicated for?
Extra Large Check-Flo introducers and guiding sheaths are intended to introduce therapeutic or diagnostic devices into the vasculature.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K203670 · printed Nov 6, 2026
Cite this page
510(k) Report. “K203670: Extra Large Check-Flo Introducer.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K203670
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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