Primary clinical study: PPG waveform data from patients with a history of AF compared to contemporaneous Holter ECG reference data.
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Indications for Use
The Study Watch with Irregular Pulse Monitor is indicated for use by adult patients (22 years and older) who have been diagnosed with, or are susceptible to developing, atrial fibrillation enabling them to monitor and record their heart rhythms. Study Watch is also intended to record, store, transfer, and display single-channel electrocardiogram (ECG) rhythms. The Irregular Pulse Monitor is indicated for use in professional healthcare facility environments, while worn as a wrist watch.
Device Story
Wearable wrist-worn device; monitors heart rhythm via optical PPG sensor and single-channel ECG electrodes. PPG data analyzed for irregular pulse (AF); if detected, device notifies user to acquire 60-second ECG. Data transferred via Study Hub to cloud; HCP views time-stamped ECG waveforms via web portal. Intended for use in professional healthcare facilities. Enables HCPs to monitor patients with known/suspected AF; facilitates clinical decision-making by providing recorded rhythm data.
Clinical Evidence
Clinical study compared PPG-based irregular pulse monitor algorithm against contemporaneous Holter ECG ground truth in patients with history of AF. Results: per-interval sensitivity 0.85 (95% CI: 0.79-0.90) and specificity 0.96 (95% CI: 0.93-0.99).
Technological Characteristics
Wrist-worn wearable; PPG optical sensor; two dedicated sensing electrodes for single-channel ECG; electronic circuit board; battery-powered; GUI for navigation; cloud-based data transfer via Study Hub; web portal for HCP viewing.
Indications for Use
Indicated for adult patients (22+) diagnosed with or susceptible to atrial fibrillation (AF) to monitor/record heart rhythms and single-channel ECGs.
Regulatory Classification
Identification
A telephone electrocardiograph transmitter and receiver is a device used to condition an electrocardiograph signal so that it can be transmitted via a telephone line to another location. This device also includes a receiver that reconditions the received signal into its original format so that it can be displayed. The device includes devices used to transmit and receive pacemaker signals.
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Image /page/0/Picture/0 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo, with the letters "FDA" in a blue square. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.
January 17, 2020
Verily Life Sciences LLC Richard Stewart Head of Regulatory Affairs 269 E Grand Avenue South San Francisco, California 94080
Re: K192415
Trade/Device Name: Study Watch with Irregular Pulse Monitor Regulation Number: 21 CFR 870.2920 Regulation Name: Telephone Electrocardiograph Transmitter and Receiver Regulatory Class: Class II Product Code: DXH, DPS Dated: December 4, 2019 Received: December 6, 2019
Dear Richard Stewart:
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. 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
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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/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 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 https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-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,
Jennifer Shih Assistant Director (Acting) Division of Cardiac Electrophysiology, Diagnostics and Monitoring Devices Office of Cardiovascular 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) K192415
Device Name Study Watch with Irregular Pulse Monitor
#### Indications for Use (Describe)
The Study Watch with Irregular Pulse Monitor is indicated for use by adult patients (22 years and older) who have been diagnosed with, or are susceptible to developing, atrial fibrillation enabling them to monitor and record their heart rhythms. Study Watch is also intended to record, store, transfer, and display single-channel electrocardiogram (ECG) rhythms. The Irregular Pulse Monitor is indicated for use in professional healthcare facility environments, while worn as a wrist watch.
| 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) |
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# 510(k) Summary
This summary of 510(k) information is submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92.
| Date Prepared: | January 17, 2020 |
|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Submitter: | Verily Life Sciences LLC |
| Official Contact: | Richard M. Stewart, Ph.D.<br>Head of Regulatory Affairs<br>269 East Grand Ave<br>South San Francisco, CA 94080, USA<br>Telephone: (650) 379-5200<br>Fax: +1 650-618-1499<br>E-Mail: rmstewart@verily.com |
| Proprietary Name: | Study Watch with Irregular Pulse Monitor |
| Common Name: | Telephone Electrocardiograph Transmitter and Receiver |
| Classification: | Class II Medical Device<br>Regulation Number: 21 CFR 870.2920<br>Product Code: DXH, DPS |
| Predicate Device: | Primary: Study Watch (K182456)<br>Secondary: FibriCheck (K173872) |
| Reason For Submission: | New Device |
#### Indications for Use
The Study Watch with Irregular Pulse Monitor is indicated for use by adult patients (22 years and older) who have been diagnosed with, or are susceptible to developing, atrial fibrillation enabling them to monitor and record their heart rhythms. Study Watch is also intended to record, store, transfer, and display single-channel electrocardiogram (ECG) rhythms. The Study Watch with Irregular Pulse Monitor is indicated for use in professional healthcare facility environments, while worn as a wrist watch.
# Device Description
The Study Watch with Irregular Pulse Monitor is a miniaturized physiological data monitoring device that is intended to record, store, transfer and display single-channel electrocardiogram (ECG) rhythms. The Study Watch with Irregular Pulse Monitor is intended to notify the user in the event of irregular pulse, such as atrial fibrillation (AF), and recommend acquisition of an ECG. The device utilizes a band and proprietary watch that incorporates two dedicated sensing electrodes to obtain a single-channel ECG measurement. In practice, a healthcare professional (HCP) may prescribe the Study Watch with Irregular Pulse Monitor to a patient and recommend the capture and transmission of one or more ECG rhythms on a daily basis for analysis by the HCP. The patient uses prompts provided on the graphical user interface (GUI) of the watch to collect a realtime 60-second ECG measurement. The patient is able to capture an ECG rhythm on-demand by navigation to the ECG menu, in response to a daily ECG reminder, or upon receipt of an irregular pulse notification. While an animated ECG waveform is briefly displayed on the GUI of the watch, the patient will not have direct access to the collected wave form.
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Using the provided charging dock (Cradle) and Verily's Study Hub device, the ECG measurements are securely transferred to Verily's cloud server and are viewed by the HCP using a web portal. The web portal is solely intended for use by the HCP to view time-stamped ECG waveforms collected by the patient and does not include any analysis features. Collectively, the Study Watch consists of the wearable watch and band, the Study Hub (used to transfer data from the watch to the cloud), a Cradle, and the web portal.
#### Substantial Equivalence Discussion
Study Watch with Irregular Pulse Monitor is substantially equivalent to the selected primary predicate Study Watch (K182456) and secondary predicate FibriCheck (K173872) in terms of intended use, fundamental scientific technology and operating principle as it relates to K182456 and indication for use and the primary modes of data collection as it relates to K173872. Specifically, both the proposed and primary predicate are intended to record, store, transfer, and display single-channel ECG rhythms in adults with known or suspected heart conditions. Also, both the proposed and secondary predicate are specifically indicated to detect irregular pulse in adults with a diagnosis of, or are susceptible to, AF. Similar to the primary predicate device, the proposed device is classified as a Telephone Electrocardiograph Transmitter and Receiver in accordance with 21 CFR 870.2920. Product Code DXH, DPS. It is of importance to note that both the Study Watch with Irregular Pulse Notification and the primary predicate device use two (2) dedicated sensing electrodes to obtain a single-channel ECG measurement.
A comparative summary of the similarities and differences between the Study Watch with Irregular Pulse Monitor and the primary predicate Study Watch (K182456) and secondary predicate FibriCheck (K173872).
| Manufacturer | Verily Life Sciences, LLC | Verily Life Sciences, LLC | Qompium |
|----------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Model Name | Study Watch w/ Irregular<br>Pulse Monitor | Study Watch | FibriCheck |
| 510(k) Number | Proposed Device: Kxxxxxx | Primary Predicate: K182456 | Secondary Predicate:<br>K173872 |
| Intended<br>Use/Indications<br>for Use | The Study Watch with Irregular Pulse<br>Monitor is indicated for use by adult<br>patients (22 years and older) who have<br>been diagnosed with, or are susceptible to<br>developing, atrial fibrillation enabling<br>them to monitor and record their heart<br>rhythms. Study Watch is also intended to<br>record, store, transfer, and display single-<br>channel electrocardiogram (ECG) rhythms.<br>The Study Watch with Irregular Pulse<br>Monitor is indicated for use in professional<br>healthcare facility environments, while<br>worn as a wrist watch. | The Study Watch is intended to<br>record, store, transfer, and display<br>single-channel electrocardiogram<br>(ECG) rhythms. The Study Watch is<br>intended for use by healthcare<br>professionals, adult patients with<br>known or suspected heart conditions.<br>and health conscious individuals. | FibriCheck is indicated for self-<br>testing by patients who have been<br>diagnosed with, or are susceptible to<br>developing, atrial fibrillation and<br>who would like to monitor and<br>record their heart rhythms on an<br>intermittent basis. |
| Prescription<br>Device for<br>Home Use | No | Yes | Yes |
| Regulation<br>Number | 21 CFR 870.2920 | 21 CFR 870.2920 | 21 CFR 870.2920 |
| Device<br>Classification<br>Name | Telephone Electrocardiograph<br>Transmitter And Receiver | Telephone Electrocardiograph<br>Transmitter And Receiver | Telephone<br>Electrocardiograph<br>Transmitter And Receiver |
| Product Code | DXH, DPS | DXH, DPS | DXH |
| Manufacturer | Verily Life Sciences, LLC | Verily Life Sciences, LLC | Qompium |
| Model Name | Study Watch w/ Irregular<br>Pulse Monitor | Study Watch | FibriCheck |
| 510(k) Number | Proposed Device: Kxxxxxx | Primary Predicate: K182456 | Secondary Predicate:<br>K173872 |
| Target<br>Population | Adults diagnosed with, or are<br>susceptible to developing, atrial<br>fibrillation | Adults with known or<br>suspected heart conditions,<br>and health conscious<br>individuals. | Adults diagnosed with, or are<br>susceptible to developing,<br>atrial fibrillation |
| Anatomical<br>Site | Left hand fingers to right wrist<br>or vice versa (ECG); Wrist<br>(PPG) | Left hand fingers to right wrist<br>or vice versa (ECG); Wrist<br>(PPG) | Finger (PPG) |
| Where Used | Mobile/active users at rest<br>(ambulatory) | Mobile/active users at rest<br>(ambulatory) | Mobile/active users at rest<br>(ambulatory) |
| Device Design | Study Watch is a wearable<br>miniaturized physiological data<br>monitoring and data collection<br>device for continuous recording<br>of physiological and<br>environmental data. The<br>features single-lead ECG<br>capability and a PPG sensor<br>among other sensors. The<br>watch also includes an<br>electronic circuit board,<br>batteries, GUI that displays<br>watch features and enables<br>menu navigation. | Same as proposed device. | FibriCheck obtains<br>waveform via Mobile<br>Platform camera and<br>displays signal in real time<br>on the Mobile Platform<br>device with an arrhythmia<br>index. Text display (green,<br>amber, or blue) indicates<br>heart regularity or<br>irregularity. All tests are<br>stored. |
| Mechanism of<br>Action | PPG: The Study Watch<br>contains an optical sensor that<br>collects the PPG waveform<br>from blood flow and this PPG<br>raw data is utilized for non-<br>medical heart rate data as well<br>as irregular pulse notification.<br>ECG: User completes circuit<br>with skin contact and hardware<br>measures ECG waveform,<br>which is stored and securely<br>transferred to the cloud via the<br>proprietary Study Hub. | PPG: The Study Watch<br>contains an optical sensor that<br>collects the PPG waveform<br>from blood flow and this PPG<br>raw data is utilized for non-<br>medical heart rate data.<br>ECG: Same as proposed<br>device. | PPG: Uses optical camera<br>of a mobile device to collect<br>photoplethysmogram data<br>(PPG data). FibriCheck<br>receives data from the<br>Mobile Platform device,<br>from which the waveform is<br>directly created. The<br>irregularity is indicated with<br>a text indicator. |
| User Interface | Patient: Study Watch<br>HCP: Web Portal | Same as proposed device | Patient: Mobile Computing<br>Platform / Web application |
| Principles of<br>Operation | PPG data collection (to detect<br>irregular pulse)<br>ECG: acquisition (for rhythm) | PPG data collection (to<br>measure heart rate)<br>ECG: Same as proposed<br>device. | PPG data collection<br>(to detect irregular pulse) |
| Recording<br>length | 60 Seconds | Same as proposed device. | Same as proposed device. |
| Irregular Pulse<br>Performance | Sensitivity: 85%<br>Specificity: 96% | N/A | Sensitivity: 96%<br>Specificity: 97% |
Table 1. Predicate Device Comparison Table
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The differences in technological characteristics associated with the proposed device in comparison to the primary predicate (K182456) and secondary predicate (K173872) have been evaluated through performance testing for target population and there are no new questions of safety and effectiveness. Therefore, the proposed device is substantially equivalent to the predicate devices.
#### Non-Clinical Performance Data
#### Performance Testing Bench
Design validation and verification activities were performed for the Study Watch with Irregular Pulse Monitor as a result of the risk analysis assessment and product requirements. Hardware verification completed for the Study Watch with Irregular Pulse Monitor covers performance assessment for the PPG sensor, battery life and memory capacity.
The Firmware verification includes test cases for performance assessment associated with ECG feature per K182456 as well as performance associated with the Irregular Pulse Monitoring feature. Testing completed follows the same software verification approach for the FW as to what was provided in the predicate device Study Watch K182456.
Successfully completed bench performance testing demonstrates the Study Watch with Irregular Pulse Monitor is substantially equivalent to the predicate device for the specified intended use.
#### Performance Testing Human Factors
The 510(k)-cleared Study Watch per K182456 underwent a human factors assessment demonstrating that the Study Watch is substantially equivalent to the predicate device for the specified intended use (for the ECG feature). This previously completed human factors assessment per K182456 is still applicable as there are no changes to user interface or how the ECG waveform is displayed. Additional human factors assessments were conducted to assess that the system as it relates to the Study Watch with Irregular Pulse Monitor meets user needs and that the Instructions for Use (IFU) support the effective use of the system including specific risk management measures. Two formative studies assessed the instructions for two user groups: Study Watch users and Web Portal users (HCP) and demonstrate that IFU for the Study Watch with Irregular Pulse Monitor can be well comprehended by users, supporting the effective use of the irregular pulse notification feature.
#### Clinical Performance Data
Clinical performance testing was conducted to demonstrate that Study Watch with Irregular Pulse Monitor generates data that meet the clinical requirements for irregular pulse monitoring in target patients. Specifically, the primary clinical study collected Study Watch PPG waveform (Test) data in clinic from patients with a history of AF and applied the PPG-based Irregular Pulse Monitor algorithm, using contemporaneous Holter ECG (Reference) data as ground truth. The presented data include the primary endpoints [per-interval sensitivity 0.85 (0.79-0.90) and specificity 0.96 (0.93-0.99)] showing that the PPG-based Irregular Pulse Monitor algorithm exceeds the pre-specified per-interval performance thresholds for sensitivity and specificity for continuous monitoring. This study demonstrates that the Study Watch with Irregular Pulse Monitor is substantially equivalent to primary predicate Study Watch (K182456) and secondary predicate FibriCheck (K173872) and substantially equivalent to the predicate device for the specified intended use.
#### Conclusion
In Summary, the comprehensive performance testing demonstrates that the Study Watch with Irregular Pulse Monitor is substantially equivalent to the predicate device for the specified intended use. This testing in addition to the comprehensive comparison to the primary predicate Study Watch (K182456) and secondary predicate FibriCheck (K173872) demonstrate the Study Watch with Irregular Pulse Monitor is substantially equivalent to the named predicate devices for the specified intended use.
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.