K222929 · Epic Medical Pte. , Ltd. · ONB · Jan 11, 2024 · General Hospital
Device Facts
Record ID
K222929
Device Name
ToxiSeal Vial Adapter with External Balloon
Applicant
Epic Medical Pte. , Ltd.
Product Code
ONB · General Hospital
Decision Date
Jan 11, 2024
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 880.5440
Device Class
Class 2
Indications for Use
The ToxiSeal™ Vial Adaptor with External Balloon mechanically prohibits environmental contaminants from entering the system and the escape of drug or vapor concentrations from the system, thereby minimizing individual and environmental exposure to drug vapor, aerosols, and spills. The device also prevents the introduction of microbial contaminations into the drug or fluid path for up to 168 hours (or 7 days) when used as intended.
Device Story
ToxiSeal™ Vial Adaptor with External Balloon is a single-use, sterile CSTD component. It attaches to drug vials to provide a closed docking interface for ProSeal™ Injectors. Input: drug vials and diluents. Operation: utilizes an integrated external balloon/expansion chamber to equalize pressure during fluid/air transfer, preventing drug/vapor escape and environmental contamination. Output: closed fluid path for drug reconstitution and aspiration. Used in clinical settings by healthcare professionals. Benefits: minimizes clinician/environmental exposure to hazardous drugs and maintains drug sterility for up to 168 hours.
Clinical Evidence
Bench testing only. No clinical data. Performance validated against ISO 22413, ISO 8871-5, ISO 8536-2, and ISO 8536-4. Testing included fragmentation, penetration force, leak integrity, pressure equalization volume, NIOSH CSTD protocol, and microbial ingress. Biocompatibility testing per ISO 10993-1 (cytotoxicity, sensitization, reactivity, systemic toxicity, pyrogenicity, hemocompatibility). Particulate matter testing per USP <788>. Sterility validated per ISO 11135; shelf-life validated per ASTM 1980-16.
Indicated for use as a closed system drug transfer device (CSTD) to minimize exposure to hazardous drugs, vapors, and aerosols during reconstitution and transfer, and to maintain sterility of the drug/fluid path for up to 7 days.
Regulatory Classification
Identification
An intravascular administration set is a device used to administer fluids from a container to a patient's vascular system through a needle or catheter inserted into a vein. The device may include the needle or catheter, tubing, a flow regulator, a drip chamber, an infusion line filter, an I.V. set stopcock, fluid delivery tubing, connectors between parts of the set, a side tube with a cap to serve as an injection site, and a hollow spike to penetrate and connect the tubing to an I.V. bag or other infusion fluid container.
Special Controls
*Classification.* Class II (special controls). The special control for pharmacy compounding systems within this classification is the FDA guidance document entitled “Class II Special Controls Guidance Document: Pharmacy Compounding Systems; Final Guidance for Industry and FDA Reviewers.” Pharmacy compounding systems classified within the intravascular administration set are exempt from the premarket notification procedures in subpart E of this part and subject to the limitations in § 880.9.
Predicate Devices
BD PhaSeal® Closed System Drug Transfer Device (K123213)
Submission Summary (Full Text)
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Image /page/0/Picture/0 description: The image contains two logos. On the left is the Department of Health & Human Services logo. On the right is the FDA logo, which includes the letters "FDA" in a blue square, followed by the words "U.S. FOOD & DRUG ADMINISTRATION" in blue text.
January 11, 2024
Epic Medical Pte Ltd Freddie Lee CEO, MD 105 Cecil, 20-01 The Octagon Singapore, Singapore 069534 Singapore
Re: K222929
Trade/Device Name: ToxiSeal™ Vial Adapter with External Balloon Regulation Number: 21 CFR 880.5440 Regulation Name: Intravascular administration set Regulatory Class: Class II Product Code: ONB Dated: January 8, 2024 Received: January 8, 2024
Dear Freddie Lee:
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 (the 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 available 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.
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device"
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(https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30. Design controls; 21 CFR 820.90. Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the OS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
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 adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); 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 Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
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/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). 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 (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely.
David Walloschek
David Wolloscheck, Ph.D. Assistant Director DHT3C: Division of Drug Delivery and General Hospital Devices, and Human Factors
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OHT3: Office of Gastrorenal, ObGyn, General Hospital, and Urology Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K222929
### Device Name
ToxiSeal™ Vial Adaptor with External Balloon
### Indications for Use (Describe)
The ToxiSeal™ Vial Adaptor with External Balloon mechanically prohibits environmental contaminants from entering the system and the escape of drug or vapor concentrations from the system, thereby minimizing individual and environmental exposure to drug vapor, aerosols, and spills. The device also prevents the introduction of microbial contaminations into the drug or fluid path for up to 168 hours (or 7 days) when used as intended.
| Type of Use (Select one or both, as applicable) | |
|-----------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------|
| <span style="font-family: Arial, sans-serif;">☑ Prescription Use (Part 21 CFR 801 Subpart D)</span> | <span style="font-family: Arial, sans-serif;">☐ Over-The-Counter Use (21 CFR 801 Subpart C)</span> |
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# K222929 - 510(K) Summary
# Date Prepared: January 11, 2023
#### Submitter I.
Epic Medical Pte. Ltd. 105 Cecil Street #20-04, The Octagon, Singapore 069534. Phone: +65 9635 2618 / +66 81 761 5292
Contact Person: Mr. Freddie LEE, CEO/MD E-mail: freddie.lee@epic-med.com
#### II. Subject Devices
| Trade /Device Name | ToxiSeal™ Vial Adaptor with External Balloon |
|---------------------------------------------------|--------------------------------------------------------------------------------|
| Common /Usual Name | Closed Antineoplastic and Hazardous Drug Reconstitution<br>and Transfer Device |
| Classification Name | Intravascular administration set |
| Regulation Medical<br>Specialty, and Review Panel | General Hospital |
| Regulation Number | 21 CFR 880.5440 |
| Regulatory Classification | Class II |
| Product Code | ONB |
#### III. Predicate
| 510(K) Number | K123213 |
|---------------------------|------------------------------------------------|
| Trade /Device Name | BD PhaSeal® Closed System Drug Transfer Device |
| Regulation Number | 21 CFR 880.5440 |
| Regulatory Classification | Class II |
| Product Code | ONB |
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#### IV. Indications for Use Statement
The ToxiSeal™ Vial Adaptor with External Balloon mechanically prohibits environmental contaminants from entering the system and the escape of drug or vapor concentrations from the system, thereby minimizing individual and environmental exposure to drug vapor, aerosols, and spills. The device also prevents the introduction of microbial contaminations into the drug or fluid path for up to 168 hours (or 7 days) when used as intended.
#### V. Device Description
The ToxiSeal™ Vial Adaptor with External Balloon devices are single-use, sterile, nonpyrogenic CSTD drug vial adaptors that are fitted to the drug vials and seal against the closures of the vials. They are used as sterile docking interfaces between the drug vials and the ProSeal™ Injectors for injection of diluents into the drug vials and/or aspiration of liquid drug from the vials.
In addition, the ToxiSeal™ Vial Adaptor with External Balloon devices equalize the pressure difference which occurs when fluid or air is added to or removed from the drug vial. This neutral pressure is maintained utilizing an external balloon/ expansion chamber.
The ToxiSeal™ Vial Adaptor with External Balloon devices, designed to be used with the cleared ProSeal™ Injector within the ProSeal™ CSTD system (K192075), are additions of CSTD vial adaptor component device offerings to the ProSeal™ CSTD system. The additions enhance the completeness of the portfolio of ProSeal™ CSTD devices system.
#### VI. Comparison of Technological Characteristics
The ToxiSeal™ Vial Adaptor with External Balloon devices and the Predicate devices share the following characteristics:
- use of CSTD vial adaptor barrier technology .
- use of an integrated pressure equalization chamber .
- same interfaces between system components ●
- same materials of construction for vial adaptor spike
The ToxiSeal™ Vial Adaptor with External Balloon devices and the Predicate devices PhaSeal® Protector vial adaptor devices are different with respect to the membrane material and the spike material.
The table that follows compares key technological features between the Subject and Predicate devices.
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| Parameter/<br>characteristic<br>compared | Predicate Device<br>BD PhaSeal® Closed System<br>Drug Transfer Device –<br>PhaSeal I® Protector<br>(K123213) | Subject Device<br>Epic Medical ToxiSeal™<br>Vial Adaptor with External<br>Balloon<br>(K222929) | Discussion |
|------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------|------------------------------|
| System<br>component | Vial Adaptor<br>(Vial Access Device) | Vial Adaptor<br>(Vial Access Device) | Same |
| Closed System<br>Technology | Physical barrier to prevent<br>all drug mass<br>from crossing the system<br>boundary | Physical barrier to prevent<br>all drug mass<br>from crossing the system<br>boundary | Same |
| Drug vial<br>air pressure<br>equalization | Integrated<br>pressure equalization<br>chamber | Integrated<br>pressure equalization<br>chamber | Same |
| Interface<br>between system<br>components | Elastomeric<br>resealing double-membrane | Elastomeric<br>resealing double-membrane | Same |
| Membrane<br>material | Thermoplastic elastomer<br>(TPE) | Isoprene rubber (IR) | Different<br>See comment # 1 |
| Vial adaptor spike | Plastic (Model P28, plastic<br>(polypropylene (PP)) | Plastic (all models,<br>Copolyester) | Different<br>See comment #1 |
| Sterilization<br>method | EO, SAL 10-6 | EO, SAL 10-6 | Same |
| System<br>components | o PhaSeal® Protector<br>o PhaSeal® Injector<br>o PhaSeal® Connector | o ToxiSeal™ Vial Adaptor<br>with External Balloon<br>o ProSeal™ Injector<br>o ProSeal™ Connector | Same |
| Hydrophobic filter<br>(non-fluid path) | Polytetrafluoroethylene<br>(PTFE) | Polytetrafluoroethylene<br>(PTFE) | Same |
| Expansion films | Polypropylene (PP),<br>Polyamide aka Nylon (PA) | Polyethylene terephthalate -<br>Polyethylene (PET/PE)<br>laminate<br>and Polyethylene (PE) | Different<br>See comment #2 |
| Filter cover | Polypropylene (PP) | Acrylonitrile<br>Butadiene Styrene (ABS) | Different<br>See comment #2 |
| Housing | Polypropylene (PP) | Polycarbonate (PC) and<br>Copolyester | Different |
| Parameter/<br>characteristic<br>compared | Predicate Device<br>BD PhaSeal® Closed System<br>Drug Transfer Device –<br>PhaSeal 1® Protector<br>(K123213) | Subject Device<br>Epic Medical ToxiSeal™<br>Vial Adaptor with External<br>Balloon<br>(K222929) | Discussion |
| | | | See comment #2 |
| Protective lid | Polyethylene<br>aka polythene (PE) | Polyvinylchloride (PVC) | Different<br>See comment #2 |
| Non-fluid<br>path materials in<br>general that are<br>not listed above | Polypropylene (PP),<br>Polyamide aka Nylon (PA) | Polypropylene (PP),<br>Acrylonitrile<br>Butadiene Styrene (ABS),<br>Polyvinylchloride (PVC) | Different<br>See comment #2 |
| Discussion of differences in technological characteristics | | | |
# Technological characteristics comparison
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### Technological characteristics comparison
### Comment #1
Isoprene Rubber (IR) and Copolyester of medical grade/ formulated for medical devices are widely used in medical devices as fluid path materials. IR is used in the Subject device in place of thermoplastic elastomer (TPE) in the Predicate. Both TPE and IR are nonallergenic, unlike natural rubber latex; and both TPE and IR offer easy sterilization and have great abrasion resistance, flexibility, and stability. Both Copolyester (Subject device) and polypropylene (Predicate device) are chemically resistant and are materials of choice in devices that contact drugs containing chemical solvents, surfactants, and/or fat emulsions.
In addition, biocompatibility studies and chemical analyses for added safety assurance are conducted for the materials and validated to be safe for the intended use (see section VII-B).
The Subject device underwent analytical and functional performance tests to assure safety and performance standards are met. The evaluations of the membrane and spike material differences confirmed these do not raise any new or different safety or performance effectiveness issues/ concerns (see section VII-A and VII-C).
### Comment #2
These specific material differences do not raise any new or different safety or performance issues/ concerns as they are not within the fluid-path. Moreover, their functional performances are tested and found to have met their respective safety and effectiveness acceptance criteria (see section VII-A and VII-C).
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### Performance Data Supporting Substantial Equivalence VII.
- A. Functional Performance
The sterile, single-use, vial adaptor with external balloon described in this Summary were tested and demonstrated to be in conformance with the following ISO and FDA recognized standards:
- ISO 22413: 2010, Transfer sets for pharmaceutical preparations Requirements and test ● methods
- ISO 8871-5: 2016, Elastomeric parts for parenterals and for devices for pharmaceutical . use Part 5: Functional requirements and testing
- ISO 8536-2:2010, Infusion equipment for medical use Part 2: Closures for infusion ● bottles
- ISO 8536-4: 2019, Infusion equipment for medical use Part 4: Infusion sets for single . use, gravity feed
Testing done:
- . Fragmentation study
- . Vial Adaptor penetration force testing
- Device leak integrity testing .
- Volume of pressure equalization study
- Testing to (draft) NIOSH CSTD Test Protocol
- Microbial ingress/ microbiological integrity testing
- B. Biocompatibility
In accordance with ISO 10993-1: 2018, the Vial Adaptor with External Balloon is classified as: Externally Communicating Device, Blood Path Indirect, Prolonged Contact (>24hr to 30d). The following testing were conducted, and found to have met their respective acceptance criteria:
- Cytotoxicity ●
- Skin sensitization ●
- Intracutaneous reactivity ●
- Acute systemic toxicity ●
- Pyrogenicity ●
- Subacute/subchronic systemic toxicity
- Hemocompatibility study
- Chemical characterization
- Toxicological risk management ●
Particulate matter testing was conducted in accordance with USP <788> Particulate Matter in Injections and found to have met the USP acceptance criteria.
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- C. Sterility, Shipping, and Shelf-Life
The Subject device complies with sterilization requirements of ISO 11135:2014, Sterilization of Health Care Products –Ethylene Oxide – Part 1: Requirements for Development, Validation and Routine Control of a Sterilization Process for Medical Devices.
- . Package Integrity Test
- Sterile Barrier Packaging Testing performed on the proposed device: .
- Seal strength ASTM F88 -
- Shelf-life of 3 years is validated using the FDA recognized standard, ASTM 1980-16, Standard Guide for Accelerated Aging of Sterile Barrier Systems for Medical Devices.
# VIII. Conclusions
The differences between the Predicate and the Subject device do not raise any new or different questions of safety or effectiveness. The ToxiSeal™ Vial Adaptor with External Balloon is substantially equivalent to the BD PhaSeal® Closed System Drug Transfer Device with respect to the indications for use, target populations, treatment method, and technological characteristics.
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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.