510(k) · Cleared
ClearedVitrification Kit and Thawing Kit
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Kitazato Corporation · MQL Media, Reproductive
Cleared on Dec 14, 2017 as substantially equivalent to K160006 (Irvine Scientific, 2016) after a 184-day review. Its family tree reaches back 5 generations to 2000. 7 later devices descend from it.
- Decided
- Dec 14, 2017
- Review
- 184 days
- Class
- Class II
- Product code
- MQL
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 5 generations to K000309 (2000). 9 ancestors in all. 7 later devices descend from it, 6 citing it directly.
- Root · 5 generations backK000309 Blastocyst Freeze Medium, Blastocyst Thaw MediumIrvine Scientific Sales Co., Inc. · 2000
- 4 generations backK032154 G-Freezekit BlastVitrolife AB · 2004
- 3 generations backK073522 Vitrification Kit & Vitrification Warming KitSage In-Vitro Fertilization, Inc. · 2008
- 2 generations backK093273 Vit Kit - Freeze and ThawIrvine Scientific Sales Co., Inc. · 2010
- 1 generation backK160006 Vit Kit-Freeze Oocytes, Embryos and PN zygotes Vitrification Freeze…Irvine Scientific · 2016 · Recalled
- This deviceK171748 Vitrification Kit and Thawing KitKitazato Corporation · 2017
- Descendant · cites it directly · 1 of its ownK251305 Ultra-Fast Vitri; Ultra-Fast WarmKitazato Corporation · 2025
- Descendant · cites it directly · 0 of its ownK254261 Vitrification Freeze Kit and Thawing Kit (CS-IVF-FK; CS-IVF-TK)Cell Store (Beijing) Biotechnology CO., LTD. · 2026
- Descendant · 2 generations on · 0 of its ownK260248 Ultra-Fast WarmKitazato Corporation · 2026
- Descendant · cites it directly · 0 of its ownK242561 Dewin Reproductive Media (Dewin Vitrification Kit, Dewin Thawing Kit)Donnevie Medical Technology (Shanghai) Co., Ltd. · 2025
- Descendant · cites it directly · 0 of its ownK240176 V-VITFREEZE and V-VITWARMVitromed GmbH · 2024
Showing 5 of 7 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 7 · See all- K251305Ultra-Fast Vitri; Ultra-Fast WarmKitazato Corporation · 2025 · cites it directly1descendant
- K254261Vitrification Freeze Kit and Thawing Kit (CS-IVF-FK; CS-IVF-TK)Cell Store (Beijing) Biotechnology CO., LTD. · 2026 · cites it directly0descendants
- K260248Ultra-Fast WarmKitazato Corporation · 2026 · 2 generations on0descendants
- K242561Dewin Reproductive Media (Dewin Vitrification Kit, Dewin Thawing Kit)Donnevie Medical Technology (Shanghai) Co., Ltd. · 2025 · cites it directly0descendants
- K240176V-VITFREEZE and V-VITWARMVitromed GmbH · 2024 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −5 | K000309 | Blastocyst Freeze Medium, Blastocyst Thaw Medium | Irvine Scientific Sales Co., Inc. | 2000 | — |
| −4 | K032154 | G-Freezekit Blast | Vitrolife AB | 2004 | — |
| −3 | K073522 | Vitrification Kit & Vitrification Warming Kit | Sage In-Vitro Fertilization, Inc. | 2008 | — |
| −2 | K093273 | Vit Kit - Freeze and Thaw | Irvine Scientific Sales Co., Inc. | 2010 | — |
| −1 | K160006 | Vit Kit-Freeze Oocytes, Embryos and PN zygotes Vitrification Freeze Kit, Vit… | Irvine Scientific | 2016 | 2 |
| 0 (this device) | K171748 | Vitrification Kit and Thawing Kit | Kitazato Corporation | 2017 | — |
| +1 | K251305 | Ultra-Fast Vitri; Ultra-Fast Warm | Kitazato Corporation | 2025 | — |
| +1 | K254261 | Vitrification Freeze Kit and Thawing Kit (CS-IVF-FK; CS-IVF-TK) | Cell Store (Beijing) Biotechnology CO., LTD. | 2026 | — |
| +2 | K260248 | Ultra-Fast Warm | Kitazato Corporation | 2026 | — |
| +1 | K242561 | Dewin Reproductive Media (Dewin Vitrification Kit, Dewin Thawing Kit) | Donnevie Medical Technology (Shanghai) Co., Ltd. | 2025 | — |
| +1 | K240176 | V-VITFREEZE and V-VITWARM | Vitromed GmbH | 2024 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2001 | 1 | 0 |
| 2004 | 1 | 0 |
| 2006 | 1 | 0 |
| 2008 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2024 | 3 | 0 |
| 2025 | 2 | 0 |
| 2026 | 2 | 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 MQL? 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 MQL device
- #1 K251305 Ultra-Fast Vitri; Ultra-Fast Warmscore 14.4 · 6 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 |
|---|---|---|---|
| * | K160006 | Vit Kit-Freeze Oocytes, Embryos and PN zygotes Vitrification Freeze Kit, Vit Kit-Thaw…Summary page 5…ware, Assisted Reproduction Device Class: Class II Classification Panel: Obstetrics/Gynecology 5. Legally Marketed Predicate Devices K160006, Vit Kit® ‐ Vitrification Freeze Kit/ Vitrification Thaw Kit, Irvine Scientific Sales Co., Inc. The predicate device has not… | 2016 |
| † | K160864 | Cryotop Vitrification Kit and Cryotop Thawing Kit | 2016 |
What descends from it? (7)
6 later devices cite it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K251305 | Ultra-Fast Vitri; Ultra-Fast Warm | 2025 | 1 |
| K254261 | Vitrification Freeze Kit and Thawing Kit (CS-IVF-FK; CS-IVF-TK) | 2026 | 0 |
| K242561 | Dewin Reproductive Media (Dewin Vitrification Kit, Dewin Thawing Kit) | 2025 | 0 |
| K240176 | V-VITFREEZE and V-VITWARM | 2024 | 0 |
| K233846 | Vitrification Solution Set and Warming Solution Set | 2024 | 0 |
| K233477 | Cryo-straw (Type I, Type III); Warming Kit (A-4ML, B-8ML); Vitrification Kit (A-3ML… | 2024 | 0 |
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 17 years and passes through 5 companies; a new generation was cleared every 4.2 years on median.
- 1 of the 9 ancestors has a recall of any class.
- Of its descendants, K251305 (Kitazato Corporation, 2025) has gone furthest, with 1 descendant of its own.
- 3 other devices also cite its predicate K160006.
How does its category compare?
All MQL devicesMQL Media, Reproductive: FDA decisions, review times, recalls and adverse event reports over 20 years. 2017, this device’s year, is highlighted.
FDA decisions per year · MQL
9in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · MQL
225in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · MQL
1in 2023
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · MQL
3in 2025
MAUDE reports naming product code MQL, 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 | 3 | 212 | 0 | 0 |
| 2008 | 12 | 151 | 0 | 0 |
| 2009 | 2 | — | 0 | 0 |
| 2010 | 6 | 235 | 0 | 0 |
| 2011 | 1 | — | 0 | 0 |
| 2012 | 5 | 253 | 1 | 1 |
| 2013 | 0 | — | 0 | 2 |
| 2014 | 5 | 142 | 0 | 3 |
| 2015 | 7 | 87 | 0 | 0 |
| 2016 | 12 | 170 | 0 | 2 |
| 2017 | 10 | 113 | 0 | 0 |
| 2018 | 4 | 94 | 0 | 0 |
| 2019 | 6 | 170 | 0 | 0 |
| 2020 | 8 | 257 | 1 | 0 |
| 2021 | 1 | — | 2 | 0 |
| 2022 | 3 | 316 | 1 | 0 |
| 2023 | 5 | 199 | 1 | 1 |
| 2024 | 12 | 195 | 0 | 6 |
| 2025 | 9 | 225 | 0 | 3 |
| 2026 | 3 | 179 | 0 | — |
What is it indicated for?
The Vitrification Kit is indicated for use in the preparation, vitrification and storage of oocytes (MII), pronuclear (PN) zygotes through day 3 cleavage stage embryos, and blastocyst stage embryos.
The Thawing Kit is indicated for use in the preparation and thawing of vitrified oocytes (MII), pronuclear (PN) zygotes through day 3 cleavage stage embryos, and blastocyst stage embryos.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K171748 · printed Nov 6, 2026
Cite this page
510(k) Report. “K171748: Vitrification Kit and Thawing Kit.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K171748
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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