KNOCKOUT SR MEDIUM, KNOCKOUT SR XENOFREE MEDIUM MODEL 10828, 12618
K100616 · Life Technologies Corporation · NDS · May 20, 2010 · Gastroenterology, Urology
Device Facts
Record ID
K100616
Device Name
KNOCKOUT SR MEDIUM, KNOCKOUT SR XENOFREE MEDIUM MODEL 10828, 12618
Applicant
Life Technologies Corporation
Product Code
NDS · Gastroenterology, Urology
Decision Date
May 20, 2010
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 876.5885
Device Class
Class 2
Indications for Use
Knockout™ SR Medium and Knockout™ SR Xenofree Medium are liquid tissue culture media product intended for human ex vivo tissue and cell culture processing applications.
Device Story
Knockout™ SR and Knockout™ SR Xenofree are liquid, serum-free tissue culture media; used for ex vivo processing, growth, and maintenance of human embryonic stem cells (ESC) and patient-specific induced pluripotent stem cells (iPSCs). Knockout™ SR contains defined nutrient materials; Knockout™ SR Xenofree replaces animal-derived components with human-derived or synthetic alternatives. Media are used in laboratory settings by trained personnel to provide consistent growth conditions. Products are stored at 2°C-8°C; shelf life is 14 months. Efficacy is demonstrated by cell morphology, plate efficiency, and colony formation. Benefits include reduced differentiation compared to fetal bovine serum and consistent, defined formulation for cell culture applications.
Clinical Evidence
Bench testing only. Performance validated against Class II Special Controls Guidance Document. Testing included: ES cell morphology, relative plate efficiency, and relative type 1 colonies to demonstrate growth support and lack of toxicity; LAL testing (USP <85>) for endotoxin/pyrogen levels; sterility assurance level (SAL) ≥ 10^-3; and raw material purity testing per USP, ACS, FCC, and GIBCO standards. Stability testing confirmed pH maintenance, lack of cytotoxicity, and container/closure integrity over 14-month shelf life.
Technological Characteristics
Liquid, serum-free, chemically defined tissue culture media. Knockout™ SR Xenofree is animal-origin-free. Sterilized via aseptic processing. Storage: 2°C-8°C. Raw materials tested per USP, ACS, FCC, and GIBCO standards. No electronic components or software.
Indications for Use
Indicated for human ex vivo tissue and cell culture processing applications to support the growth or maintenance of human tissue or cells in culture.
Regulatory Classification
Identification
Tissue culture media for human ex vivo tissue and cell culture processing applications consist of cell and tissue culture media and components that are composed of chemically defined components (e.g., amino acids, vitamins, inorganic salts) that are essential for the ex vivo development, survival, and maintenance of tissues and cells of human origin. The solutions are indicated for use in human ex vivo tissue and cell culture processing applications.
Special Controls
*Classification.* Class II (special controls): FDA guidance document, “Class II Special Controls Guidance Document: Tissue Culture Media for Human Ex Vivo Processing Applications; Final Guidance for Industry and FDA Reviewers.”
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K100616
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# 510 (k) Summary
MAY 2 0 2010
Life Technologies Corporation - Knockout™ SR Medium and Knockout™ SR Xenofree Medium
| Device Name: | KnockoutTM SR Medium<br>KnockoutTM SR Xenofree Medium |
|----------------------|-------------------------------------------------------------------------------------------------------------------------|
| Common/Usual Name: | KSR<br>KSR Xenofree |
| Classification Name: | Tissue culture media for human <i>ex vivo</i> tissue and cell<br>culture processing applications (per 21 CFR § 876.5885 |
| Product Code: | NDS |
| Submitter: | Life Technologies Corporation<br>3175 Staley Road<br>Grand Island, New York 14072 |
| Telephone: | (716) 774-3122 |
| Facsimile: | (716) 774-0230 |
| Email: | kelli.tanzella@lifetech.com |
| Contact: | Kelli Tanzella, Ph.D. |
| Date Prepared: | March 01, 2010 |
| Trade Name | Manufacturer | 510(k) |
|---------------|--------------------------------------------------------------------|---------|
| AIM-V® Medium | Life Technologies Corporation<br>(formerly Invitrogen Corporation) | K022080 |
### Intended Use
Knockout™ SR Medium and Knockout™ SR Xenofree Medium are liquid tissue culture media product intended for human ex vivo tissue and cell culture processing applications.
## Substantial Equivalence
AIM-V® Medium is the predicate device for tissue culture media intended for human ex vivo tissue and cell culture processing applications. It is composed of chemically defined nutrient materials in solution (with or without supplements) that are essential for the survival and development of tissue or cells of human or other animal origin. These nutrients are provided in liguid form for use in supporting the growth or maintenance of human tissue and cells.
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Page 2 510(k) Summary - Life Technologies Knockout™ SR Medium and Knockout™ SR Xenofree Medium
#### A. Intended Uses
Knockout™ SR Medium and Knockout™ SR Xenofree Medium and AIM-V® Medium tissue culture products are intended for human ex vivo tissue and cell culture processing applications. These devices are chemically defined tissue culture media used to support the growth or maintenance of human tissue or cells in culture.
# B. Principles of Operation and Technological Characteristics
# Knockout™ SR
Knockout™ SR is a serum-free medium with a defined formulation that provides consistent growth conditions for human and mouse embryonic stem cell (ESC) and patient-specific induced pluripotent cell lines (iPSCs). Both ESC and iPSC grown in Knockout™ SR supplemented media are substantially less differentiated than those grown in fetal bovine serum (FBS) supplemented media. This media was introduced in 1998 and there are over 300 literature references to Knockout™ SR.
# Knockout™ SR Xenofree
Knockout "M SR Xenofree is a serum-free and animal origin-free defined formulation that provides consistent growth conditions for human and mouse embryonic stem cell (ESC) and patient-specific induced pluripotent cell lines (iPSCs). All animal derived components have been replaced with human derived or synthetic components to yield a xenogeneic-free formulation. This media was developed and marketed in 2008.
# C. Pre-clinical Testing
#### Performance Standards
Performance standards under Section 514 of the Federal Food, Drug, and Cosmetic Act have been established in Guidance Document "Class II Special Controls Guidance Document: Tissue Culture Media for Human Ex Vivo Tissue and Cell Culture Processing Applications: Final Guidance for Industry and FDA Reviewers," issued May 16, 2001. The specific assay tests and Life Technologies Corporation's equivalent tests that were conducted are identified in the table below.
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### Page 3 1 age 3
5 10(k) Summary - Life Technologies Knockout™ SR Medium and Knockout™ SR Xenofree Medium
| Special Control Objective | Life Technologies Corporation<br>KnockoutTMSR Medium |
|------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|
| Demonstrate lack of potential<br>toxicity of materials in the media to<br>cells or tissue and demonstrate<br>support of tissue and cell growth | ES Cell Morphology, relative plate<br>efficiency, and relative type 1<br>colonies |
| Demonstrate lack of endotoxin or<br>pyrogen contamination | Limulus Ameobocyte (LAL) test (25<br>USP Monograph <85>) |
| Validation of Aseptic Processing and<br>Sterility Assurance Level (SAL) | Determination of SAL to be ≥ $10^{-3}$ compliance with<br>GMP requirements regarding aseptic processing |
| Demonstrates Chemical purity | Incoming Raw Material testing using USP, ACS,<br>FCC, GIBCO, or Cell Culture requirements. |
# Stability/Shelf Life
Based on analysis of product performance over time, Life Technologies Corporation has established a shelf life of 14-months for Knockout™ SR Medium and Knockout™ SR Xenofree Medium formulations, when stored between 2°C-8°C. Stability testing involved the assessment of these functional aspects of media, including demonstrating: ( ) that the pH continued to meet specifications; and (2) the media was not cytotoxic and supported the growth of mammalian cells. The pH was tested to demonstrate that the media was not chemically altered during its storage. In assessing cytoxicity/biocompatibility, Life Technologies Corporation demonstrated that the media functions in supporting the growth of mammalian cells and that the media does not become toxic to mammalian cells during storage. In addition, results from container/closure integrity testing have demonstrated that the container/closure system provides protection from microbial contamination.
# D. Conclusion
Knockout™ SR Medium and Knockout™ SR Xenofree Medium and AIM-V® Medium are used for human ex vivo tissue and cell culture processing applications and have the same principles of operation, technological characteristics, efficacy (generic cellular growth and maintenance) and safety (consistency in chemical content and formulation, biocompatibility with cells, and purity). Their efficacy in supporting the survival, growth, development, and maintenance of human cells or tissue culture systems has been well established in scientific publications included in this submission. These products (Knockout 10) SR Medium and Knockout™ SR Xenofree Medium and AIM-V® Medium) are manufacturer in accordance with QSR requirements and are labeled as aseptically processed. Thus, Knockout™ SR Medium and Knockout™ SR Xenofree Medium are substantially equivalent to the legally marketed device intended for the human ex vivo tissue and cell culture processing applications.
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Image /page/3/Picture/0 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo consists of two main elements: the department's seal and the agency's symbol. The seal is a circular emblem with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. The symbol is a stylized depiction of an eagle, with three lines representing the bird's body and wings.
Food and Drug Administration 10903 New Hampshire Avenue Document Mail Center - WO66-G60 Silver Spring, MD 20993-0002
Kelli L. Tanzella, Ph.D. Senior Manager, Americas Regulatory Affairs Life Technologies . 3175 Staley Road GRAND ISLAND NY 14072
MAY 2 0 2010
Re: K100616
Trade/Device Name: Knockout™ SR Medium
Knockout™ SR Xenofree Medium
Regulation Number: 21 CFR \$876.5885
Regulation Name: Tissue culture media for human ex vivo tissue and cell culture processing applications
Regulatory Class: II Product Code: NDS Dated: March 4, 2010 Received: March 4, 2010
Dear Dr. Tanzella: .
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. 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. 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
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adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act): 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 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 the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Janine M. Morris
Acting Director, Division of Reproductive. Abdominal, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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510(k) Number (if known):
K100616
Device Name: Knockout™ SR Medium Knockout™ SR Xenofree Medium
# Indications for Use:
Knockout™ SR Medium and Knockout™ SR Xenofree Medium are liquid tissue culture medium products intended for human ex vivo tissue and cell culture processing applications.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHRE PAGE IF NEEDED)
Concurrence of CDRH, Office of Evaluation (ODE)
Prescription Use ***_***_
(Per 21 CFR 801.109)
OR
Over-The --Cour
(Optional Forma
(Division Sign-Off)
Division of Reproductive, Abdominal and
Radiological Devices
510(k) Number
Over-The --Counter Use (Optional Format 1-2-96)
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.