The mask is intended to provide a patient interface for application of noninvasive ventilation. The mask is to be used as an accessory to ventilators which have adequate alarms and safety systems for ventilation failure, and which are intended to administer CPAP or positive pressure ventilation for treatment of respiratory failure or respiratory insufficiency. The mask is for single patient use in the hospital/institutional environment only. The mask is to be used on patients 7 years or older (>40lbs/20kg) who are appropriate candidates for noninvasive ventilation.
Device Story
VPAP Pediatric Face Mask serves as patient interface for noninvasive ventilation (CPAP/BiPAP); used in hospital/institutional settings. Device connects to ventilators via standard 22mm/15mm ports (ISO 5356-1:2015). Mask consists of polycarbonate frame, silicone cushion, and headgear (SBR, nylon, TPU). Designed for pediatric patients ≥7 years (>40lbs/20kg). Healthcare providers select appropriate size (L or XL) to ensure secure fit and seal. Device delivers pressurized air to patient airway; supports respiratory therapy by maintaining airway patency. Single-patient use design ensures hygiene. Performance verified through leakage, flow resistance, and dead space testing to ensure effective ventilation delivery and patient safety.
Clinical Evidence
Bench testing only. No clinical data. Testing included biocompatibility (ISO 10993-5, -10, -18), emissions (ISO 18562-2, -3), toxicological risk assessment (ISO 10993-17), leakage, resistance to flow, noise (ISO 17510), and dead space (ISO 9360-1). Results demonstrate performance comparable to predicate.
Technological Characteristics
Non-vented full face mask. Materials: PC frame, silicone cushion, SBR/nylon/TPU headgear. Interface: 22mm/15mm connector (ISO 5356-1:2015). Operating pressure: 5-20 cmH2O. Non-sterile, single-patient use. Biocompatibility per ISO 10993; emissions per ISO 18562.
Indications for Use
Indicated for pediatric patients 7 years or older (>40lbs/20kg) requiring noninvasive ventilation (CPAP or positive pressure) for respiratory failure or insufficiency in hospital/institutional settings.
Regulatory Classification
Identification
A continuous ventilator (respirator) is a device intended to mechanically control or assist patient breathing by delivering a predetermined percentage of oxygen in the breathing gas. Adult, pediatric, and neonatal ventilators are included in this generic type of device.
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FDA U.S. FOOD & DRUG ADMINISTRATION
March 12, 2023
Hsiner Co., Ltd.
% Yvonne Chen
Regulatory Affairs Consultant
Voler Biotech Consulting CO., Ltd
6F.-17, No. 14, Lane 609, Section 5, Chongxin Road, Sanchong District
New Taipei City, 241407
Taiwan
Re: K251888
Trade/Device Name: VPAP Pediatric Face Mask
Regulation Number: 21 CFR 868.5895
Regulation Name: Continuous Ventilator
Regulatory Class: Class II
Product Code: CBK
Dated: February 11, 2026
Received: February 11, 2026
Dear Yvonne Chen:
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.
U.S. Food & Drug Administration
10903 New Hampshire Avenue
Silver Spring, MD 20993
www.fda.gov
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K251888 - Yvonne Chen
Page 2
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" (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 Management System Regulation (QMSR) (21 CFR Part 820), which includes, but is not limited to, ISO 13485 clause 7.3 (Design controls), ISO 13485 clause 8.3 (Nonconforming product), and ISO 13485 clause 8.5 (Corrective and preventative action). Please note that regardless of whether a change requires premarket review, the QMSR requires device manufacturers to review and approve changes to device design and production (ISO 13485 clause 7.3 and 21 CFR 820.70) and document changes and approvals in the Medical Device File (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 (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-reporting-combination-products); good manufacturing practice requirements as set forth in the Quality Management System Regulation (QMSR) (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.
All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rule"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance/unique-device-identification-system-udi-system.
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-devices/medical-device-safety/medical-device-reporting-mdr-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/medical-devices/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-devices/device-advice-comprehensive-regulatory-
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K251888 - Yvonne Chen
Page 3
assistance/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,
Ethan L. Nyberg -S
Ethan Nyberg, Ph.D.
Assistant Director
DHT1C: Division of Anesthesia, Respiratory, and Sleep Devices
OHT1: Office of Ophthalmic, Anesthesia, Respiratory, ENT, and Dental Devices
Office of Product Evaluation and Quality
Center for Devices and Radiological Health
Enclosure
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FORM FDA 3881 (8/23)
Page 1 of 1
PSC Publishing Services (301) 443-6740
EF
| DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration Indications for Use | Form Approved: OMB No. 0910-0120 Expiration Date: 07/31/2026 See PRA Statement below. |
| --- | --- |
| 510(k) Number (if known) K251888 | |
| Device Name VPAP Pediatric Face Mask | |
| Indications for Use (Describe) The mask is intended to provide a patient interface for application of noninvasive ventilation. The mask is to be used as an accessory to ventilators which have adequate alarms and safety systems for ventilation failure, and which are intended to administer CPAP or positive pressure ventilation for treatment of respiratory failure or respiratory insufficiency. The mask is for single patient use in the hospital/institutional environment only. The mask is to be used on patients 7 years or older (>40lbs/20kg) who are appropriate candidates for noninvasive ventilation. | |
| Type of Use (Select one or both, as applicable) ☑ Prescription Use (Part 21 CFR 801 Subpart D) ☐ Over-The-Counter Use (21 CFR 801 Subpart C) | |
| CONTINUE ON A SEPARATE PAGE IF NEEDED. | |
| This section applies only to requirements of the Paperwork Reduction Act of 1995. *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.* | |
| The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to: Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff@fda.hhs.gov | |
| "An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number." | |
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510(k) Summary – K251888
# 510(k) SUMMARY
## 1. Submission Information
Submitter: HSINER CO., LTD
No.312, Jhongshan Rd., Shengang Dist., Taichung City 429,
Taiwan (R.O.C.)
Submitter contact: Sandy Chang
Tel: +886-4-25570500
E-mail: sandy@hsiner.com
Date of preparation: 2026/03/11
## 2. Device Name and Classification
Product Name: VPAP Pediatric Face Mask
Classification Name: Continuous ventilator
Common or Usual Name: Face mask
Regulation Number: 868.5895
Product Code: CBK
## 3. 1 Predicate Device(s)
Product Name: AF531 SE Full Face Mask
Common or Usual Name: Face mask
Regulation Number: 868.5895
Product Code: CBK
510(k) Number K101129
## 2 Reference Device(s)
Product Name: Hsiner NIPPV Masks
Common or Usual Name: Face mask
Regulation Number: 868.5895
Product Code: CBK
510(k) Number K102120
## 4. Device Description
The VPAP Pediatric Face Mask is designed for pediatric patients in hospital and institutional settings, serving as an interface for Continuous Positive Airway Pressure (CPAP) and bi-level positive airway pressure (BiPAP) therapy. Available in two sizes to accommodate varying facial dimensions of pediatric patients, these
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510(k) Summary - K251888
masks ensure a comfortable and secure fit. The VPAP Pediatric Face Mask is intended for single-patient, supporting consistent and reliable noninvasive ventilation.
# 5. Indications for Use
The mask is intended to provide a patient interface for application of noninvasive ventilation. The mask is to be used as an accessory to ventilators which have adequate alarms and safety systems for ventilation failure, and which are intended to administer CPAP or positive pressure ventilation for treatment of respiratory failure or respiratory insufficiency.
The mask is for single patient use in the hospital/institutional environment only.
The mask is to be used on patients 7 years or older $(>40\mathrm{lbs} / 20\mathrm{kg})$ who are appropriate candidates for noninvasive ventilation.
6. Comparison to the Predicate Device
| | Subject Device – VPAP Pediatric Face Mask | 1 Predicate Device (K101129) –AF531 SE Full Face Mask | Brief comparison |
| --- | --- | --- | --- |
| Class | II | II | Substantially equivalent |
| Regulation No | 21 CFR 868.5895 | 21 CFR 868.5895 | Substantially equivalent |
| Product Code | CBK | CBK | Substantially equivalent |
| Patient Population | Patients 7 years or older (>40 lbs/20 kg) | Patients 7 years or older (>40 lbs/20 kg) | Substantially equivalent |
| Indications for Use | The mask is intended to provide a patient interface for application of noninvasive ventilation. The mask is to be used as an accessory to ventilators which have adequate alarms and safety systems for ventilation failure, and which are intended to administer CPAP or positive pressure ventilation for treatment of respiratory | The small size AF531 SE Full Face Mask is intended to provide a patient interface for application of noninvasive ventilation. The mask is to be used as an accessory to ventilators which have adequate alarms and safety systems for ventilation failure, and which are intended to administer CPAP or positive pressure ventilation for | Substantially equivalent |
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510(k) Summary - K251888
| | failure of respiratory insufficiency.
The mask is for single patient use in the hospital/institutional environment only.
The mask is to be used on patients 7 years or older (>40lbs/20kg) who are appropriate candidates for noninvasive ventilation. | treatment of respiratory failure, respiratory insufficiency or obstructive sleep apnea. The mask is for single use in the hospital/institutional environment only. The mask is to be used on patients 7 years or older (>40lbs/20kg) who are appropriate candidates for noninvasive ventilation. | |
| --- | --- | --- | --- |
| Sterility | Non-sterile | Non-sterile | Substantially equivalent |
| Intended Environment for Use | Hospital/institutional environment | Hospital/institutional environment | Substantially equivalent |
| Duration of Use | Single patient | Single patient | Substantially equivalent |
| Mask Sizes | L-Model 11316
XL-Model 11317 | Small Model | Different |
| Operating Pressure Range | 5-20 cmH₂O | 4-20 cmH₂O | Different |
| Technical specification | | | |
| Interface Connections | 22mm/15mm
ISO 5356-1:2015 | 22mm/15mm
ISO 5356-1:2015 | Substantially equivalent |
| Dead Space (ml) | L : 116
XL : 148 | S : 278 | Different |
| Resistance to Flow (cmH₂O) | L : 0.7@50 l/min;
2.9@100 l/min
XL : 0.7@50 l/min;
2.9@100 l/min | 0.4@50 l/min;
1.2@100 l/min | Different |
| Material | Mask Frame: PC
Mask Cushion : Silicone Tubing: Silicone Headgear and ring: SBR, Nylon and TPU | Mask Frame: PC
Mask Cushion : Silicone Headgear and ring: SBR, Nylon and TPU | Similar |
| Patient Contact Material | Silicone, TPU, SBR, Nylon | Silicone, TPU, SBR, Nylon | Substantially equivalent |
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510(k) Summary - K251888
# Discussion of Differences in Technological Characteristics
The VPAP Pediatric Face Mask shares fundamental technological characteristics with the predicate device (K101129), including similar indications for use, patient population (pediatric patients ≥7 years and >40 lbs/20 kg), use environment (hospital/institutional), and regulatory classification (Class II, Product Code CBK). Both devices are non-vented full face masks designed as patient interfaces for noninvasive ventilation, with similar mask and headgear materials (e.g., polycarbonate and silicone for the mask components), connector types (22 mm ISO 5356-1:2015), and single-patient use designation.
However, minor differences exist in certain technological characteristics, as detailed in the comparison table above. These include:
- Operation Pressure Range: The subject device supports 5-20 cmH₂O, while the predicate supports 4-20 cmH₂O. This slight difference in minimum pressure does not affect SE, as performance testing (including leakage and resistance to flow per internal standards) demonstrated comparable airflow delivery and seal integrity across the overlapping range.
- Dead Space Volume: The subject device has volumes of 103 mL (L size) and 138 mL (XL size), compared to the predicate's 245 mL (S size). The reduced dead space in the subject device does not raise new questions of substantial equivalence, as CO₂ rebreathing testing (per ISO 9360-1) confirmed equivalent gas exchange performance.
- Resistance to Flow: The subject device exhibits 0.7 cmH₂O at 50 L/min and 2.9 cmH₂O at 100 L/min, versus the predicate's 0.4 cmH₂O at 50 L/min and 1.2 cmH₂O at 100 L/min. This difference is attributable to design variations in mask geometry but does not impact SE, as flow resistance testing (per internal protocols) showed both devices maintain adequate ventilation without excessive pressure drop.
- Size Configurations: The subject device offers two pediatric sizes (L and XL), while the predicate offers S, M, and L sizes. The subject device's focused pediatric sizing does not affect SE, as dimensional verification and fit testing confirmed equivalent compatibility with patient interfaces and ventilators.
- Materials (Headgear): The subject device's headgear includes SBR, nylon, thermoplastic polyurethane, and silicone corrugated tubing, compared to the predicate's nylon, Lycra polyester, polyurethane, and polyoxymethylene. These
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510(k) Summary – K251888
variations are minor and do not affect substantial equivalence per biocompatibility testing (per ISO 10993-1, -5, -10, and -18) and chemical characterization.
These technological differences have been evaluated through comprehensive non-clinical performance testing, including leakage (per internal standards), resistance to flow (per internal standards), noise (per ISO 17510), dead space (per ISO 9360-1), biocompatibility (per ISO 10993 series), and volatile organic compounds/particulate matter emissions with toxicological risk assessment (per ISO 18562 series). The results confirm that the subject device performs comparably to the predicate device across all tested parameters, without raising different questions of substantial equivalence. The reference device (K102120) was specifically used to support the color additives in the headgear materials, further validating material compatibility.
Therefore, the VPAP Pediatric Face Mask is substantially equivalent to the predicate device.
## 7. Performance Data
Non-clinical testing was conducted to demonstrate substantial equivalence to the predicate device, including biocompatibility evaluations per ISO 10993 standards and emissions testing per ISO 18562 standards, along with general device performance assessments. The results from these tests confirm that the subject device performs comparably to the predicate device.
Biocompatibility testing included:
- Cytotoxicity testing (XTT assay) per ISO 10993-5, demonstrating acceptable cell viability.
- Sensitization testing (maximization test) per ISO 10993-10, showing no sensitization response.
- Irritation testing (intracutaneous reactivity) per ISO 10993-10, indicating no irritation.
- Chemical characterization per ISO 10993-18, confirming leachables and extractables within acceptable limits.
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510(k) Summary – K251888
Emissions testing included:
- Particulate matter (PM) emissions per ISO 18562-2, with results below specified thresholds.
- Volatile organic compounds (VOC) emissions per ISO 18562-3, with results below specified thresholds.
- Toxicological risk assessment (TRA) based on the above emissions data per ISO 10993-17, yielding acceptable margins for potential exposure.
General performance testing included:
- Leakage testing per internal standards, which measures air leakage at specified pressures to verify seal integrity.
- Resistance to flow testing per internal standards, evaluating pressure drop across flow rates to ensure adequate airflow.
- Noise testing per internal standards, assessing sound levels during operation to confirm quiet performance.
- Dead space testing per ISO 9360-1, determining the volume of rebreathable gas to support ventilation efficiency, with results comparable to the predicate.
Transportation
The packaging ensures subject device integrity under ISTA 2A conditions, meeting FDA requirements for safe transportation. Minor carton deformations do not affect product safety or efficacy, supporting 510(k) compliance.
These non-clinical test results collectively support substantial equivalence to the predicate device.
8. Conclusion
The performance testing demonstrates that the subject device is as safe and effective as the predicate. Therefore, the subject device is substantially equivalent to the predicate device.
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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.