The INOmax® DS delivery system delivers INOMAX® (nitric oxide for inhalation) therapy gas into the inspiratory limb of the patient breathing circuit in a way that provides a constant concentration of nitric oxide (NO), as set by the user, to the patient throughout the inspired breath. It uses a specially designed injector module, which enables tracking of the ventilator waveforms and the delivery of a synchronized and proportional dose of NO. It may be used with most ventilators. The INOmax® DS provides continuous integrated monitoring of inspired O2, NO2, and NO, and a comprehensive alarm system. The INOmax® DS incorporates a battery that provides up to 6 hours of uninterrupted NO delivery in the absence of an external power source. The INOmax® DS includes a backup NO delivery capability that provides a fixed flow of 250 mL/min of NO which along with user supplied 10 L/min of oxygen provides 20 ppm in the gas flow to a patients breathing circuit. It may also use the INOblender® for backup. The target patient population is controlled by the drug labeling for INOmax® and is currently neonates. The primary targeted clinical setting is the Neonatal Intensive Care Unit (NICU) and secondary targeted clinical setting is the transport of neonates.
Device Story
INOmax DSIR delivers nitric oxide (NO) gas to neonatal patients via ventilator breathing circuits. Dual-channel architecture: delivery channel (CPU, flow controller, injector module) and monitoring channel (monitor CPU, gas sensors for NO, NO2, O2). Injector module tracks ventilator waveforms to provide synchronized, proportional NO dosing. System includes battery backup (6 hours) and manual backup delivery mode (fixed 20 ppm NO). Used in NICU and transport by clinicians. Monitoring channel provides continuous gas concentration data and alarm management; can trigger delivery shutdown if NO levels exceed 100 ppm or other fault conditions occur. Software v2.1 updates alarm thresholds and adds compatibility with specific respiratory care devices. Benefits include precise, synchronized NO delivery and integrated safety monitoring to prevent over-delivery.
Clinical Evidence
No clinical data. Substantial equivalence supported by bench testing, including electrical safety (IEC 60601-1), electromagnetic compatibility (IEC 60601-1-2), and software verification. Performance testing confirmed compatibility with new respiratory care devices across various settings (0-80 ppm) and ventilation modes, validating O2 dilution, delivery accuracy, and NO2 generation.
Technological Characteristics
Dual-channel delivery/monitoring system. Components: Delivery unit, blender, stand, NO gas tanks. Software v2.1. Connectivity: RS-232 port for data collection. Standards: IEC 60601-1, IEC 60601-1-2, IEC 60601-1-4, IEC 60601-1-8. Battery-powered (6-hour runtime).
Indications for Use
Indicated for neonates requiring nitric oxide inhalation therapy. Used in NICU and transport settings. Contraindications governed by INOmax drug labeling.
Regulatory Classification
Identification
The nitric oxide administration apparatus is a device used to add nitric oxide to gases that are to be breathed by a patient. The nitric oxide administration apparatus is to be used in conjunction with a ventilator or other breathing gas administration system.
Special Controls
The special control for this device is FDA's “Guidance Document for Premarket Notification Submissions for Nitric Oxide Administration Apparatus, Nitric Oxide Analyzer, and Nitrogen Dioxide Analyzer.”
The special control developed by the agency is a guidance document, entitled Guidance Document for Premarket Notification Submissions for Nitric Oxide Delivery Apparatus, Nitric Oxide Analyzer and Nitrogen Dioxide Analyzer. This guidance document identifies the risks associated with these types of devices and contains information that will help manufacturers address those risks. This document is available on FDA's website at http://www.fda.gov/cdrh/ode/1157.pdf.
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INO Therapeutics/Ikaria Premarket Notification
K 121021
# 510(k) Summary
SEP 2 4 2012 In accordance with 21 CFR 807.92 the following updated summary of information is provided with the additional non-clinical analysis performed as a result of a request for additional information by FDA:
#### Date: September 18, 2012
Submitter: INO Therapeutics, doing business as Ikaria 2902 Dairy Drive Madison, Wisconsin 53718
Primary Contact David Trueblood Director, Regulatory Affairs Person: INO Therapeutics/Ikaria T: 608-395-3910 F: 608-226-3402
Secondary Contact Person:
Birgit Pump Assistant Director, Regulatory Affairs INO Therapeutics/Ikaria T: 908-238-6328
Device Trade Name:
INOmax DSIR® (Delivery System)
MRN (Primary), MRO, MRP
Common/Usual Name:
Nitric Oxide Administration Apparatus (primary) Nitric Oxide Administration Apparatus, Back-up System Nitric Oxide Analyzer Nitrogen Dioxide Analyzer
Classification Names:
Product Code:
Predicate Device(s):
Device Description:
Apparatus, Nitric Oxide Delivery, or Apparatus, Nitric Oxide Backup Delivery, Class II - 21 CFR 868.5165
K061901, K070867, K071516, K080484, K081691, K090958, K092545, K093922, K110344, K110635, K113272
The INOmax DSIR® uses a "dual-channel" design to ensure the safe delivery of INOmax®. The first channel has the delivery CPU, the flow controller and the injector module to ensure the accurate delivery of NO. The second channel is the monitoring system, which includes a separate monitor CPU, the gas cells (NO, NO2, and O2 cells) and the user interface including the display and alarms. The dual-channel approach to delivery and monitoring permits INOmax® delivery independent of monitoring but also allows the monitoring system to shutdown INOmax delivery if it detects a fault in the delivery system such that the NO concentration could become greater than 100 ppm. The delivery system
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can also shut down delivery if it detects certain serious problems with the monitoring system.
Intended Use:
The INOmax® DS delivery system delivers INOMAX® (nitric oxide for inhalation) therapy gas into the inspiratory limb of the patient breathing circuit in a way that provides a constant concentration of nitric oxide (NO), as set by the user, to the patient throughout the inspired breath. It uses a specially designed injector module, which enables tracking of the ventilator waveforms and the delivery of a synchronized and proportional dose of NO. It may be used with most ventilators.
The INOmax® DS provides continuous integrated monitoring of inspired O2, NO2, and NO, and a comprehensive alarm system.
The INOmax® DS incorporates a battery that provides up to 6 hours of uninterrupted NO delivery in the absence of an external power source.
The INOmax® DS includes a backup NO delivery capability that provides a fixed flow of 250 mL/min of NO which along with user supplied 10 L/min of oxygen provides 20 ppm in the gas flow to a patients breathing circuit. It may also use the INOblender® for backup.
The target patient population is controlled by the drug labeling for INOmax® and is currently neonates. The primary targeted clinical setting is the Neonatal Intensive Care Unit (NICU) and secondary targeted clinical setting is the transport of neonates.
Technology:
All revisions of INOmax DSR® utilize component technology to deliver Nitric Oxide gas to the patient. The components consist of the Delivery System unit, the blender, a stand/cart and the NO gas tanks: In this revision of the INOmax DSIR®, the software and labeling have been updated.
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#### Determination of Comparison to Predicate Device:
Substantial Equivalence: The INOmax DSR® with modified software and labeling has the same intended use as the cleared INOmax DSIR®. All features are identical except those described in the table below. . .
| Feature /<br>Specification | INOmax DSIR-<br>K113272 | INOmax DSIR with modified software and additional<br>respiratory care devices. |
|----------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Alarms/Alerts | Low Battery | The Smart Battery within the INOmax DSIR reports the time remaining to the Monitoring Processor. The Low Battery alarm threshold limit was changed from 30 minutes to 60 minutes in the software to provide additional margin to the system electronics. From the user perspective the alarm limit is still 30 minutes. Shutdown of the device when operating on battery is not dependent on the Low Battery alarm, therefore the length of runtime when operating on battery remains unchanged. |
| | Delivery Failure<br>for NO >100 ppm | The NO > 100 ppm condition must be present for 12 continuous seconds at monitored NO > 100 ppm before alarm and delivery shutdown. The 12 second timer will be reset when a sampling blackout occurs. The change in time to 12 seconds, from zero seconds was made to prevent loss of delivery conditions during transient monitored NO values briefly exceeding 100 ppm. |
| | Delivery Failure<br>for NO >2x set<br>point | To prevent loss of delivery during transient conditions, the overdelivery condition of NO > 2x setpoint must be present for 12 continuous seconds (versus 0 seconds in the prior software version) at monitored NO > 2x setpoint before alarm and delivery shutdown. |
| | Delivery Failure<br>for Under Delivery | Under Delivery Alarm added.<br><br>To prevent loss of delivery during transient conditions, the under delivery condition must be present for 12 consecutive seconds to trigger the under delivery alarm. In the previous version, the system would immediately shut-down as soon as the under delivery condition was detected. |
| | Delivery Failure | Three system voltage conditions during which this alarm was triggered have been eliminated. |
| | RS-232 Port<br>Configuration | Not applicable. |
| Labeling for<br>compatibility<br>with<br>respiratory<br>care devices | A variety of<br>transport, neonatal,<br>adult/ped, high<br>frequency and<br>anesthesia<br>ventilators, nasal<br>CPAP and nasal high<br>flow cannulas. | Additional respiratory care devices include:<br><br>Fisher & Paykal Infant Circuit Nasal Cannula (K020332)<br><br>Fisher and Paykal Optiflow Breathing Circuit (K983112)<br><br>A-Plus Medical Babi Plus Bubble CPAP (K110471) |
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### INOmax DSig with v2.1 Software
## Summary of Non-Clinical Tests:
The following quality assurance measures were applied to the modification of the system:
- Risk Analysis .
- Requirements Reviews . �
- Design Reviews �
- Testing on unit level (Module verification) .
- . Integration testing (System verification)
- Performance testing (Verification)
- Safety testing (Verification)
Support for the substantial equivalence of the INOmax DSIR® was provided as a result of risk management and testing which included electrical safety, performance and software tests. This testing includes conformity to the FDA recognized consensus standards and voluntary standards as follows:
- IEC 60601-1:1988 + A1:1991 + A2:1995: Medical electrical . equipment - Part 1: General requirements for basic safetv and essential performance
- IEC 60601-1-2: 2001 (2nd Edition, Am 1 ) General . requirements for safety - Collateral standard: Electromagnetic compatibility - Requirements and tests
- IEC 60601-1-4:2000-04 General Requirements for Safety-. Collateral Standard: Programmable Electrical Medical Systems
- IEC 60601-1-8:2006 General requirements for basic safety . and essential performance - Collateral Standard: General requirements, tests and guidance for alarm systems in medical electrical equipment and medical electrical systems.
Software verification confirmed the INOmax DSR® is compliant with its system level requirements, that the new/modified alarms function as specified and that data can be correctly communicated to third part data collection devices via the existing RS-232 port.
To confirm compatibility with the three new respiratory care devices. these devices were set up and calibrated according to the manufacturer's recommendations, and tested using the settings established for each device. The INOmax DSIR was set up and calibrated according to the manufacturer's recommendations.
Five INOmax DSIR® settings were used [0 (baseline), 5, 20, 40, and 80 ppm] for each setting and mode of ventilation.
The measured values on the INOmax DSIR® were also recorded along
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with any anomalies found.
The testing concluded four requirements necessary for the operation of the INOmax DSJR® and the three respiratory care devices to be compatible:
- O2 dilution
- Effect on respiratory care device
- INOmax DSIR® delivery accuracy
- NO2 generation
Testing with the Fisher & Paykel circuits additionally concluded proper function during backup delivery.
While the delivery control mechanism was not changed in the modifications for the version 2.1 software, an analysis was conducted to characterize the performance of the closed-loop control system and to compare the version 2.1 control system to that of the predicate device. This analysis incorporated the following elements:
- . INOmax DSIR® control system theory of operation
- . ldentification of the control system input/output relationships
- . Frequency response of the control system in normal device operation
- . Stability/sensitivity analysis demonstrating the response of the control system using worst-case flow inputs and the handling of disturbances and component failures
- Graphical presentation showing time-domain responses of . overshoot and undershoot across various ventilator flow rates and flow profiles
- Demonstration of control system safety information in the . device labeling
## Summary of Clinical Tests:
The subject of this premarket submission, INOmax DSjR®, with revised software and interfaced to each of the selected respiratory care devices. did not require clinical studies to support substantial equivalence.
## Conclusion:
INO Therapeutics/Ikaria considers the INOmax DSig to be as safe and as effective as the predicate device, with performance substantially equivalent to the predicate device.
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# DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/5/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo features a stylized eagle with three tail feathers, representing the department's commitment to health, human services, and well-being. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" are arranged in a circular pattern around the eagle.
### Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
SEP
24 2012
INO Therapeutics Mr. David Trueblood Director, Regulatory Affairs 2902 Dairy Drive Madison, Wisconsin 53718
Re: K121021
Trade/Device Name: INOmax DSIR® (Delivery System). Regulation Number: 21 CFR 868.5165 Regulation Name: Nitric Oxide Administration Apparatus Regulatory Class: II Product Code: MRN, MRQ, MRP Dated: August 13, 2012 Received: August 14, 2012
Dear Mr. Trueblood:
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. .
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# Page 2- Mr. Trueblood
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 (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to
http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
Wh for
Anthony D. Watson, B.S., M.S., M.B.A. Director
Division of Anesthesiology, General Hospital, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and
Radiological Health
Enclosure
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INO Therapeutics/Ikaria Premarket Notification
## 510(k) Number (if known):
INOmax® DS Device Name:
Indications for Use:
The INOmax® DS delivery system delivers INOmax® (nitric oxide for inhalation) therapy gas into the inspiratory limb of the patient breathing circuit in a way that provides a constant concentration of nitric oxide (NO), as set by the user, to the patient throughout the inspired breath. It uses a specially designed injector module, which enables tracking of the ventilator waveforms and the delivery of a synchronized and proportional dose of NO. It may be used with most ventilators.
The INOmax® DS provides continuous integrated monitoring of inspired O2, NO2, and NO, and a comprehensive alarm system.
The INOmax® DS incorporates a battery that provides up to 6 hours of uninterrupted NO delivery in the absence of an external power source.
The INOmax® DS includes a backup NO delivery capability that provides a fixed flow of 250 mL/min of NO which along with user supplied 10 L/min of oxygen provides 20 ppm in the gas flow to a patients breathing circuit. It may also use the INOblender® for backup.
The target patient population is controlled by the drug labeling for INOmax® and is currently neonates. The primary targeted clinical setting is the Neonatal Intensive Care Unit (NICU) and secondary targeted clinical setting is the transport of neonates.
Prescription Use X (Part 21 CFR 801 Subpart D)
# AND/OR
Over-The-Counter Use . (Part 21 CFR 801 Subpart C)
# (PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
L. Schull
(Division Sign-Off) Division of Anesthesiology, General Hospital Infection Control, Dental Devices
**510(k) Number:** K121021
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.