The CuattroDR, when used with a cleared digital image capture device, provides for the capture of digital images in place of conventional film radiographic examinations. The device is intended to be available for retrofit on existing or planned x-ray machines with a cleared digital image capture device. The device is intended for use by trained and qualified personnel in the acquisition and review of radiographic images. The product is not intended for mammography or fluoroscopy applications.
Device Story
CuattroDR is a software application for Windows-based workstations that acquires, processes, and displays digital X-ray images; replaces conventional film radiography. Input: X-ray signals from cleared digital flat panel detectors. Operation: Software interfaces with X-ray generators (via RS-232) and detectors to capture images; processes images using Sharp View Image Enhancement System; presents images on touch screen monitors within 12 seconds. Output: Digital radiographic images for review, archival, and transmission to PACS/DICOM systems. Used in clinical settings by trained personnel (radiographers/radiologists). Benefits: Enables digital image acquisition on existing X-ray hardware; enhances image detail for clinical review; facilitates efficient workflow via DICOM connectivity and generator control.
Clinical Evidence
Bench testing only. Verification and validation testing performed per design control processes and FDA software guidance. Testing included basic functionality, communication, exposure feedback, and generator control (kVp, mAs, mA, time, focal spot) using a Sedecal SHFR generator and five different cleared digital detectors with anatomical phantoms. No clinical data presented.
Technological Characteristics
Software-based workstation application; Windows Embedded 8.1 Industry Pro OS. Connectivity: Ethernet, DICOM 3.0 compliant. Image processing: Sharp View Image Enhancement System. Generator control: RS-232 interface. Hardware: Compatible with fixed/portable, wired/wireless digital flat panel detectors. Form factor: Standalone software on PC workstation.
Indications for Use
Indicated for trained and qualified personnel for the acquisition and review of radiographic images using a cleared digital image capture device as a retrofit for existing or planned x-ray machines. Not for mammography or fluoroscopy.
Regulatory Classification
Identification
A stationary x-ray system is a permanently installed diagnostic system intended to generate and control x-rays for examination of various anatomical regions. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
Special Controls
*Classification.* Class II (special controls). A radiographic contrast tray or radiology diagnostic kit intended for use with a stationary x-ray system only is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is an abstract symbol that resembles a stylized caduceus or a series of interconnected human profiles.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
October 6, 2016
Cuattro, LLC % Mr. Matthew Taylor Director, Quality Assurance/Regulatory 3760 Rocky Mountain Avenue LOVELAND CO 80538
Re: K161937
Trade/Device Name: CuattroDR Regulation Number: 21 CFR 892.1680 Regulation Name: Stationary x-ray system Regulatory Class: II Product Code: KPR, LLZ Dated: September 14, 2016 Received: September 15, 2016
Dear Mr. Taylor:
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 (reporting of medical device-related 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.
{1}------------------------------------------------
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education 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. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for 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 Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours.
Robert Ochs
Robert Ochs, Ph.D. Director Division of Radiological Health Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health
Enclosure
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## 4. Indications for Use (Form 3881)
DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
#### Indications for Use
510(k) Number (if known) K161937
Device Name
CuattroDR
Indications for Use (Describe)
The CuattroDR, when used with a cleared digital image capture device, provides for the capture of digital images in place of conventional film radiographic examinations.
The device is intended to be available for retrofit on existing or planned x-ray machines with a cleared digital image capture device.
The device is intended for use by trained and qualified personnel in the acquisition and review of radiographic images. The product is not intended for mammography or fluoroscopy applications.
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."
FORM FDA 3881 (8/14)
Form Approved: OMB No. 0910-0120 Expiration Date: January 31, 2017 See PRA Statement below.
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Image /page/3/Picture/0 description: The image shows the word "cuattro" in a lowercase sans-serif font, with a green four-leaf clover above it. The clover is stylized, with rounded leaves and a single stem extending downwards. The word "cuattro" is in a muted blue-green color, contrasting with the brighter green of the clover. The overall design is simple and clean, suggesting a modern and possibly eco-friendly brand.
# 510(k) summary
## 510(k) Owner
| Cuattro, LLC | |
|----------------------------|-----------------|
| 3760 Rocky Mountain Avenue | |
| Loveland, CO 80538 | |
| Phone: | 970-775-2247 |
| Facsimile: | 970-775-2247 |
| Registration Number: | 3008364043 |
| Date Prepared: | August 30, 2016 |
## 510(k) Submitter
| Cuattro, LLC | |
|----------------------------|----------------|
| 3760 Rocky Mountain Avenue | |
| Loveland, CO 80538 | |
| Phone: | 970-775-2247 |
| Facsimile: | 970-775-2247 |
| Contact: | Matthew Taylor |
| Device Trade Name: | CuattroDR |
|----------------------|-------------------------|
| Common Name: | Stationary X-Ray System |
| Classification Name: | Stationary X-Ray system |
| Regulation Number: | 21 CFR 892.1680 |
| Product Code: | KPR. LLZ |
Substantial equivalence is claimed to the following Legally Marketed Devices: Primary predicate K150725:
| Manufacturer: | VISARIS |
|----------------------|-------------------------|
| Device | Visaris Avanse |
| 510(k) Number: | K150725 |
| Classification Name: | Stationary X-Ray system |
| Regulation Number: | 21 CFR 892.1680 |
| Product Code: | KPR, LLZ |
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Secondary predicate K093480:
| Manufacturer: | Cuattro |
|----------------------|---------------------------------------------|
| Device | UnoMD (CloudDR) |
| 510(k) Number: | K093480 |
| Classification Name: | Picture Archiving and Communications System |
| Regulation Number: | 21 CFR 892.2050 |
| Product Code: | LLZ |
#### Device Description
The CuattroDR device is a software application capable of acquiring x-ray images from commonly commercialized digital flat panels on a Windows based computer workstation. The software can use traditional mouse and keyboard inputs as well as touch screen monitors as an alternative. The use of the CuattroDR software enables the user to use a traditional x-ray generator and capture x-rav images without film. The images are processed and then presented to the user on a touch screen computer monitor, within 12 seconds after the x-ray exposure. The software also has capabilities to send images to hospital medical PACS systems and digital media for archival. In addition to this functionality, the CuattroDR software provides a user interface for generator control in the process of acquiring digital images.
### Indications for Use
The CuattroDR, when used with a cleared digital image capture device, provides for the capture of digital images in place of conventional film radiographic examinations. The device is intended to be available for retrofit on existing or planned x-rav machines with a cleared digital image capture device. The device is intended for use by trained and qualified personnel in the acquisition and review of radiographic images. The product is not intended for mammography or fluoroscopy applications.
### Technological Characteristics
The technological characteristics are essentially the same as the legally marketed predicate devices:
- All three of the devices (the subject device as well as the predicate devices) provide for features used by personnel in the acquisition and review of radiographic images.
- . All three of the devices (the subject device as well as the predicate devices) utilize software on a workstation computer with Ethernet capability, and provide DICOM 3.0 compliant connectivity.
- All three of the devices (the subject device as well as the predicate devices) are a ● software solution intended for use with already cleared digital image capture devices, utilizing fixed or portable digital image capture devices and wired or wireless digital image capture devices
- All three of the devices (the subject device as well as the predicate devices) provide for ● image processing of acquired images to enhance images to help clinicians see more detail in the digital X-Ray image
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- All three of the devices (the subject device as well as the predicate devices) are stand-. alone software products.
- All three of the devices (the subject device as well as the predicate devices) have . essentially the same workstation requirements.
- The new CuattroDR device as well as the Visaris Avance® device, in addition to the . image acquisition, processing and viewing, provides a user interface for generator control in the acquisition of images. The Cuattro UnoMD (CloudDR) device does not provide an interface for generator control
| Technical<br>Characteristic | CuattroDR<br>(this submission) | Cuattro UnoMD - (Name was<br>changed to CloudDR on FDA<br>registration page 6/30/11) | Visaris<br>Visaris Avanse® | Equivalence /<br>Rationale |
|--------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| FDA 510(k) # | K161937 | K093480 | K150725 | |
| Indications for<br>Use | The CuattroDR, when used with a<br>cleared digital image capture device,<br>provides for the capture of digital<br>images in place of conventional film<br>radiographic examinations.<br>The device is intended to be available<br>for retrofit on existing or planned x-ray<br>machines with a cleared digital image<br>capture device.<br>The device is intended for use by<br>trained and qualified personnel in the<br>acquisition and review of radiographic<br>images. The product is not intended<br>for mammography or fluoroscopy<br>applications. | The Cuattro UnoMD, when used with<br>a cleared digital image capture<br>device, provides for the capture of<br>digital images in place of conventional<br>film radiographic examinations.<br>The device is intended to be available<br>for retrofit on existing or planned x-ray<br>machines with a cleared digital image<br>capture device.<br>The device is intended for use by<br>trained and qualified personnel in the<br>acquisition and review of radiographic<br>images. The product is not intended<br>for mammography or fluoroscopy<br>applications. | The purpose of Visaris Avanse® is to<br>acquire, store, communicate, display<br>and process medical X-ray images. It<br>offers features (e.g. window leveling,<br>zoom, measurements, annotations<br>etc.) routinely used by medical<br>professionals, such as radiologists and<br>radiographers. Visaris Avanse<br>supports printing to DICOM compatible<br>printers. Within a network environment<br>Visaris Avanse may provide other<br>modalities with a DICOM worklist and<br>a DICOM worklist service. Images and<br>worklists can be sent and received<br>using the DICOM protocol. Visaris<br>Avanse has a modular system<br>architecture. It consists of the basic<br>application for image acquisition,<br>processing and viewing as well as a<br>number of other modules for image<br>and worklist management, archiving,<br>search and display. Beside the basic<br>functionality Visaris Avanse also<br>provides a user interface for generator<br>control and image acquisition of<br>medical images DR detectors. | Equivalent -<br>Both devices<br>are intended to<br>be used to<br>provide for the<br>acquisition of<br>digital X-ray<br>images in<br>place of<br>conventional<br>film for<br>radiographic<br>examinations. |
| Image<br>acquisition | Cleared digital image capture device<br>(DR), utilizing fixed or portable digital<br>image capture devices and wired or<br>wireless digital image capture devices. | Cleared digital image capture device<br>(DR), utilizing fixed or portable digital<br>image capture devices and wired or<br>wireless digital image capture<br>devices. | Cleared digital image capture device<br>(DR), utilizing fixed or portable digital<br>image capture devices and wired or<br>wireless digital image capture devices. | Equivalent |
| Features for<br>use by<br>personnel in<br>the acquisition<br>and review of<br>images | Window leveling<br>Zoom<br>Measurements<br>Annotations / Markers<br>Image Stitching<br>Image flip<br>Image rotate<br>Image crop<br>Image shutter<br>Receptor selection<br>Invert (reverses gray scale)<br>Image reject, with reason selection<br>Add/Delete procedure to study<br>Radiology report<br>Patient search and entry | Window leveling<br>Zoom<br>Measurements<br>Annotations / Markers<br>Image Stitching<br>Image flip<br>Image rotate<br>Image crop<br>Image shutter<br>Receptor selection<br>Invert (reverses gray scale)<br>Image reject, with reason selection<br>Add/Delete procedure to study<br>Radiology report<br>Patient search and entry | Window leveling<br>Zoom<br>Measurements<br>Annotations<br>Image Stitching<br>Patient search and entry<br>Etc. | Equivalent |
| Technical<br>Characteristic | CuattroDR<br>(this submission) | Cuattro UnoMD - (Name was<br>changed to CloudDR on FDA<br>registration page 6/30/11) | Visaris<br>Visaris Avanse® | Equivalence /<br>Rationale |
| Image<br>Processing | Incorporates Sharp View Image<br>Enhancement System manufactured<br>by Context Vision, AB (K024028)<br>Context Vision is used to enhance<br>images after X-Ray acquisition to help<br>clinicians see more detail in the digital<br>X-Ray image. | Incorporates Sharp View Image<br>Enhancement System manufactured<br>by Context Vision, AB (K024028)<br>Context Vision is used to enhance<br>images after X-Ray acquisition to help<br>clinicians see more detail in the digital<br>X-Ray image. | Advanced anatomy driven image<br>processing (From marketing literature) | Equivalent -<br>Both devices<br>use proprietary<br>image<br>processing |
| Generator<br>Control | The CuattroDR device does provide,<br>through an RS-232 interface, the ability<br>to provide control for select X-Ray<br>generators, including AEC - Validated<br>with Sedecal Generators | NONE | Control compatibility with select X-Ray<br>generators - Validated with Sedecal<br>and other generators | Equivalent |
| CPU<br>Workstation<br>Requirements | Microsoft Windows Embedded 8.1<br>Industry Pro Operating system that<br>meets minimum system requirements. | Microsoft Windows XP/7/8.1/8<br>Embedded Operating system that<br>meets minimum system<br>requirements. | MS Windows XP/7/8 operating system<br>on any hardware platform meeting the<br>minimum system requirements | Equivalent - All<br>devices run on<br>a Windows<br>platform |
| Integration | HIS/RIS - import of Modality Worklist<br>information from the institution HIS/RIS | HIS/RIS - import of Modality Worklist<br>information from the institution<br>HIS/RIS | Images and worklists can be sent and<br>received using the DICOM protocol. | Equivalent |
| External<br>Connectivity | DICOM 3.0 Compatible - Export to<br>external PACS, View Stations, CD,<br>DICOM Print | DICOM 3.0 Compatible - Export to<br>external PACS, View Stations, CD,<br>DICOM Print | Images and worklists can be sent and<br>received using the DICOM protocol. | Equivalent |
{6}------------------------------------------------
### Determination of Substantial Equivalence
The determination of substantial equivalence is based upon non-clinical performance data. Bench testing has been performed on the device following Cuattro's design control processes, as well as the applicable FDA guidance documents, in particular the guidance on Content of Premarket Submissions for Software Contained in Medical Devices.
Bench testing has been performed by a member of the team not directly responsible for software development undertook verification testing of the device. The verification test was in accordance with the following documents:
Cuattro Design Output Document, "Design_Output_SWR_00069_MD" Cuattro Design Verification Document, "Design_Verification_SWR_00069_MD" Cuattro Design Validation Document, "Design Validation SWR 00069 MD"
Validation testing for the new device included a focus on the difference between the Cuattro UnoMD (CloudDR) device and the new CuattroDR device. This testing, utilizing a Sedecal SHFR generator, five different cleared wired digital image detectors from two manufacturers, and appropriate anatomical phantoms, included:
### Basic Functionality,
Establishing/Maintaining Communications, Exposure Feedback kVp Control mAs Control Focal Spot Control mA and Time Controls Unintentional Exposure Prevention Generator Technique Validation Feature
{7}------------------------------------------------
Advanced Functionality, AEC Control Workstation Assignment Patient Size Adjustment
The results of this bench testing have demonstrated that the device is substantially equivalent to the referenced predicate device. The details of this testing and test results are in this submission in section 18, Performance Testing – Bench
#### Conclusion
Based upon the analysis of the Indications for Use, Technological Characteristics, and the results of the Bench Testing performed on the device, we have determined that the CuattroDR is safe and effective, and 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.