K181461 · Vitrolife Sweden AB · MQK · Jan 4, 2019 · Obstetrics/Gynecology
Device Facts
Record ID
K181461
Device Name
Rapid-i™ Kit
Applicant
Vitrolife Sweden AB
Product Code
MQK · Obstetrics/Gynecology
Decision Date
Jan 4, 2019
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 884.6160
Device Class
Class 2
Indications for Use
Cryopreservation device intended to be used to contain, vitrify and maintain human embryos and/or oocytes (MII).
Device Story
Rapid-i™ Kit is a sterile, single-use cryopreservation storage device for human embryos and oocytes. System components include a PMMA stick with a 0.4 mm hole for sample loading via surface tension, a Mediprene straw with a stainless steel weight for orientation in liquid nitrogen (LN), and a stainless steel rod for pre-cooling. Used in assisted reproduction laboratories by embryologists. Samples are loaded into the stick, inserted into the pre-cooled straw, and sealed using an ultrasonic device. The straw protects samples from direct LN contact. The device facilitates vitrification and subsequent maintenance of embryos/oocytes in LN storage. Clinical benefits include successful cryopreservation and post-warming survival for future transfer, supporting infertility treatment and fertility preservation.
Clinical Evidence
Clinical data from multiple studies demonstrated device efficacy. For 2PN embryos (n=1618), 90.1% survival rate; clinical pregnancy rates 25.1% (1-3 day culture) and 36.3% (4-5 day culture). For oocytes, three studies reported survival rates of 94%, 93.7%, and 90.5%, with clinical pregnancy rates ranging from 40% to 50% post-transfer. Data confirms the device effectively vitrifies and maintains oocytes and embryos.
Technological Characteristics
Materials: Polymethyl methacrylate (PMMA), Mediprene, stainless steel. Components: 80mm stick, 130mm straw, 115mm rod. Principle: Vitrification via surface tension loading in a 30 nL drop, protected by a sealed straw in liquid nitrogen. Sterilization: ISO 11135:2014. Standards: USP <85>, ANSI/AAMI ST72:2002/(R)2010 (endotoxins); ASTM F1929-15, F88/F88M-15, F1886/F1886M-16 (packaging).
Indications for Use
Indicated for cryopreservation of human embryos and oocytes (MII) for patients undergoing infertility treatment or fertility preservation.
Regulatory Classification
Identification
Assisted reproduction labware consists of laboratory equipment or supplies intended to prepare, store, manipulate, or transfer human gametes or embryos for in vitro fertilization (IVF), gamete intrafallopian transfer (GIFT), or other assisted reproduction procedures. These include syringes, IVF tissue culture dishes, IVF tissue culture plates, pipette tips, dishes, plates, and other vessels that come into physical contact with gametes, embryos or tissue culture media.
Special Controls
*Classification.* Class II (special controls) (mouse embryo assay information, endotoxin testing, sterilization validation, design specifications, labeling requirements, and clinical testing). The device, when it is a dish or plate intended for general assisted reproduction technology procedures, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 884.9.
Gook et al. (2016) Closed vitrification of human oocytes and blastocysts: outcomes from a series of clinical cases. J Assist Reprod Genet 33:1247-1252
Submission Summary (Full Text)
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January 4, 2019
Vitrolife Sweden AB Nina Arvidsson Regulatory Affairs Manager Gustaf Werners gata 2 SE-421 32 Västra Frölunda Sweden
Re: K181461 Trade/Device Name: Rapid-i™ Kit Regulation Number: 21 CFR& 884.6160 Regulation Name: Assisted Reproduction Labware Regulatory Class: II Product Code: MQK Dated: December 4, 2018 Received: December 7, 2018
Dear Nina Arvidsson:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration. listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies.
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You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see
https://www.fda.gov/CombinationProducts/GuidanceRegulatoryInformation/ucm597488.html; good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely.
# Michael T. Bailey -S
for
Benjamin R. Fisher, Ph.D. Director Division of Reproductive, Gastro-Renal, and Urological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K181461
Device Name Rapid-i™ Kit
Indications for Use (Describe)
Cryopreservation device intended to be used to contain, vitrify and maintain human embryos and/or oocytes (MI).
Type of Use (Select one or both, as applicable)
| <div> <span style="font-size:16px">☒</span> Prescription Use (Part 21 CFR 801 Subpart D) </div> |
|----------------------------------------------------------------------------------------------------|
| <div> <span style="font-size:16px">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) </div> |
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Image /page/3/Picture/1 description: The image shows the word "Vitrolife" in blue font. The font is a serif font, and the letters are all capitalized. To the right of the word is a blue swoosh that curves upward. The logo is simple and modern.
# 510(k) Summary - K181461
#### 1. Submitter Information
| Submitter: | Vitrolife Sweden AB<br>Gustaf Werners gata 2<br>SE-421 32 Västra Frölunda<br>Sweden |
|-----------------|-------------------------------------------------------------------------------------|
| Contact Person: | Nina Arvidsson |
| Phone: | +46 31 721 80 00 |
| Fax: | +46 31 721 80 90 |
| Email: | narvidsson@vitrolife.com |
- 2. Date Prepared:
January 3, 2019
#### 3. Device Identification
| Trade Name: | Rapid-i™ Kit |
|----------------------|--------------------------------------|
| Common Name: | Cryopreservation Storage Device |
| Classification Name: | Assisted Reproduction Labware |
| Regulation Number: | 21 CFR 884.6160 |
| Product Code: | MQK (Labware, Assisted Reproduction) |
| Regulatory Class: | II |
## 4. Predicate Device:
Rapid-i™ Kit (K140207) manufactured by Vitrolife Sweden AB. This predicate device has not been subject to any design related recalls.
## 5. Device description:
Rapid-i™ Kit is a modified version of the predicate device (K140207). This device is a cryopreservation storage device intended for embryo/oocyte vitrification. Rapid-i™ Kit is provided sterile and is for single-use only. This device consists of the following items:
- . Rapid-i Stick – A 80 mm long Polymethyl methacrylate (PMMA) stick with a 0.4 mm diameter hole located near the distal tip of the device. The hole on the stick is used to hold one to five embryos or oocytes for vitrification in a 30 nL drop of vitrification medium. Users suspend samples across the hole via surface tension. Therefore, the medium containing the samples only touches the periphery of the hole. The stick has one flat side that aids in correct orientation of the device during oocyte/embryo loading procedures.
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- RapidStraw A 130 mm long Mediprene straw equipped with a stainless steel weight to . maintain device orientation in liquid nitrogen (LN). The straw has a flared open end to allow for insertion of the Rapid-i Stick. This component functions as a protective sleeve around the Rapid-i Stick to prevent direct contact with LN during loading and after sealing the open end with an ultrasonic sealing device.
- . Stainless steel rod - This 115 mm long stainless steel rod resides within RapidStraw during pre-cooling procedures in LN. It aids in keeping RapidStraw straight in LN during pre-cooling. Rod removal occurs 20-30 seconds prior to Rapid-i Stick loading into the RapidStraw.
#### 6. Indications for use:
Cryopreservation device intended to be used to contain, vitrify and maintain human embryos and/or oocytes (MII).
| Devices | Subject device (K181461) | Predicate device (K140207) |
|-----------------------------------------|--------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Indications<br>for Use | A cryopreservation device intended to<br>be used to contain, vitrify and maintain<br>human embryos and/or oocytes (MII). | A cryopreservation device designed to contain,<br>vitrify and maintain 4-8 cell and blastocyst stage<br>human embryos. |
| Design | Same as the predicate device | The stick has a tip where the samples are loaded<br>in a 0.4 mm diameter hole. The stick is sealed<br>within in a straw that contains a stainless steel<br>weight to maintain device orientation in LN. |
| Dimension | - Rapid-i stick: 2mm×80mm<br>- RapidStraw: 3.40mm (OD)/2.40mm<br>(ID)×130mm<br>Stainless Steel Rod: 2.2mm × 115mm | - Rapid-i stick: 2mm×80mm<br>- RapidStraw: 3.45mm (OD)/2.45mm (ID)×<br>135mm<br>- Stainless Steel Rod: 2.2mm × 115mm |
| Cooling rate | Same as the predicate device | 1400°C/min (at -50°C) |
| Warming rate | Same as the predicate device | 10000°C/min (at -50°C) |
| Device<br>materials | Same as the predicate device | Polymethyl methacrylate (PMMA)<br>Mediprene<br>Stainless steel |
| Vitrification<br>and warming<br>methods | Same as the predicate device | Precool a straw (with steel rod inserted) with the<br>open end extending above the LN level. A 30 nL<br>drop of vitrification medium holding samples is<br>loaded in a sample hole in the stick. The stick is<br>then inserted into the pre-cooled straw (after<br>steel rod removal) to vitrify samples. The end of<br>the straw is sealed and the device is stored in<br>LN. |
#### 7. Substantial Equivalence Discussion
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The subiect device is indicated to contain. vitrify and maintain human embryos and oocytes (MII). whereas the predicate device is indicated to vitrify and maintain 4-8 cell and blastocyst stage embryos. Inclusion of the oocyte indication and expansion of the embryo indication to also include 2 PN embryos does not represent a new intended use because processing of the embryos or oocytes is applicable to same patient population with same clinical needs – infertility treatment or fertility preservation. Therefore, the subject and predicate devices have the same intended use.
The subject and predicate devices have similar technological characteristics. The only difference between the subject and predicate device is that the subject RapidStraw has a length of 130 mm and 3.40 mm OD/2.40 mm ID whereas the predicate RapidStraw has a length of 135 mm and 3.45 mm OD/2.45 mm ID. This difference is minor and does not raise different questions of safety and effectiveness as compared to the predicate device.
#### 8. Summary of Non-Clinical Performance Data
Non-clinical performance testing was conducted to support substantial equivalence to the predicate device. Rapid-i™ Kit passed all the tests shown below in accordance with internal requirements and/or applicable standards.
- Dimensional Testing per predefined design specifications. .
- . Bacterial Endotoxin Testing - < 1.0 EU/device per USP <85> and ANSI/AAMI ST72:2002/(R)2010
- Mouse Embryo Assay (MEA) - ≥80% of 1-cell embryos developed to blastocysts at 96 hours
- Shelf-life Testing: ●
- Package integrity testing:
- Dye penetration test of sterile packages per ASTM F1929-15 o
- Seal strength of sterile packages per ASTM F88/F88M-15 o
- Visual inspection per ASTM F1886/F1886M-16 o
- Dimensional testing, endotoxin testing and MEA in accordance with the methods and acceptance criteria mentioned above
In addition, information regarding cooling/warming rate testing and sterilization validation per ISO 11135:2014 and ISO 10993-7:2008 provided in K140207 was leveraged to support substantial equivalence.
#### 9. Summary of Clinical Performance Data
Data from clinical studies using the Rapid-i™ Kit were used to demonstrate the ability of the subject device to be used as a cryopreservation device for oocytes and 2 PN embryos.
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- Vitrification of 2PN embryos: .
Of 1618 2 PN embryos vitrified with Rapid-i™ Kit, 1458 (90.1%) survived after warming. Five hundred ten (510) embryo transfers were conducted using the embryos cultured for 1-3 days (418 transfers) or for 4-5 days (92 transfers). The clinical pregnancy rate resulting from the embryos cultured for 1-3 days was 25.1%. The clinical pregnancy rate resulting from the embryos cultured for 4-5 days was 36.3%.
- Vitrification of oocytes: .
- In one study, 94% (555/593) oocytes vitrified with Rapid-i™ Kit survived after warming. The fertilization rate, day 2 cleavage rate, day 5 blastulation rate were 78% (434/555), 95% (414/434) and 24% (102/434), respectively. Of the 54 blastocyst stage embryo transfers, 27 (50%) resulted in a clinical pregnancy.
- In another study, the survival rate and fertilization rate of oocytes vitrified with the Rapidi™ Kit were 93.7% and 58.5%, respectively. Of the 40 embryo transfers performed, 16 (40%) resulted in clinical pregnancy.
- In a published journal article, 90.5% (374/413) occytes vitrified with Rapid-i™ Kit survived after warming. The fertilization rate of survived oocytes was 64.2% (240/374). The cleavage rate on day 2 was 90.4% (217/240). Of the 44 embryo transfers performed, 18 (40.9%) resulted in clinical pregnancy. [Ref: Gook et al. (2016) Closed vitrification of human oocytes and blastocysts: outcomes from a series of clinical cases. J Assist Reprod Genet 33:1247-1252]
#### 10. Conclusions:
The subject and predicate devices have the same intended use and comparable technological characteristics. The differences in technological characteristics between the subject and predicate devices do not raise different questions of safety and effectiveness. The performance data demonstrate that the subject devices are substantially equivalent to the predicate device.
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.