The AddiPak® Unit Dose Vial may be used in conjunction with a non-ventilator nebulizer for lavage therapy, or for tracheal irrigation. These products are single-use, disposable, and intended for inhalation only.
Device Story
AddiPak® Unit Dose Vials are pre-filled, single-use, disposable containers holding sterile water or 0.45% sodium chloride solution. Used in home, hospital, and sub-acute facilities, these vials are intended for use with non-ventilator nebulizers for lavage therapy or tracheal irrigation. The clinician twists the perforated, break-away cap to open the vial, which features inverted graduations for volume measurement. The device provides a sterile liquid medium for inhalation therapy. It benefits patients by facilitating airway hydration or irrigation as part of respiratory care.
Clinical Evidence
No clinical testing was performed. Substantial equivalence is supported by bench testing, including biocompatibility (cytotoxicity, sensitization, intracutaneous reactivity, material-mediated pyrogenicity), chemical characterization with toxicological risk assessment, and compliance with USP 661 and USP 788 standards. Stability and sterility testing were also conducted.
Technological Characteristics
Vials are constructed of Low-Density Polyethylene (LDPE). They are manufactured via an aseptic Blow-Fill-Seal process. Available in 3mL and 5mL sizes. The device is a sterile, single-use, non-electronic, passive container. It conforms to USP monographs for Sterile Water for Inhalation and Sterile Sodium Chloride for Inhalation.
Indications for Use
Indicated for patients (infants ≥ 10kg, children, adolescents, adults) requiring lavage therapy or tracheal irrigation.
Regulatory Classification
Identification
A nebulizer is a device intended to spray liquids in aerosol form into gases that are delivered directly to the patient for breathing. Heated, ultrasonic, gas, venturi, and refillable nebulizers are included in this generic type of device.
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Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food & Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.
January 4, 2024
Medline Industries, LP Phyllis Kondor Regulatory Affairs Specialist Three Lakes Drive Northfield, Illinois 60093
Re: K231058
Trade/Device Name: Hudson RCI® AddiPak® Unit Dose Vial Regulation Number: 21 CFR 868.5630 Regulation Name: Nebulizer Regulatory Class: Class II Product Code: CAF Dated: December 5, 2023 Received: December 6, 2023
Dear Phyllis Kondor:
We have reviewed your section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (the Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device"
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(https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30. Design controls; 21 CFR 820.90. Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review. the OS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about 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.
# Ethan L. Nyberg -S
Ethan Nyberg, Ph.D. Assistant Director DHT1C: Division of Sleep Disordered Breathing, Respiratory and Anesthesia Devices
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OHT1: Office of Ophthalmic, Anesthesia, Respiratory, ENT and Dental Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K231058
Device Name AddiPak® Unit Dose Vial
#### Indications for Use (Describe)
The AddiPak® Unit Dose Vial may be used in conjunction with a non-ventilator nebulizer for lavage therapy, or for tracheal irrigation.
These products are single-use, disposable, and intended for inhalation only.
| Type of Use (Select one or both, as applicable) | |
|-----------------------------------------------------------------------------------------------------------------|--|
| <span> <span style="font-size: 16px;">☑</span> Prescription Use (Part 21 CFR 801 Subpart D) </span> | |
| <span> <span style="font-size: 16px;">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) </span> | |
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Traditional 510(k) Premarket Notification Hudson RCI® AddiPak® Unit Dose Vials All information on this page is confidential.
# 510(k) Summary
# Submitter / 510(k) Sponsor
Medline Industries, LP Three Lakes Drive Northfield, IL 60093
Registration Number: 1417592
# Submission Correspondent
Phyllis Kondor Regulatory Affairs Specialist pkondor@medline.com 1-800-633-5463
Summary Preparation Date January 3, 2024
#### Type of 510(k) Submission Traditional
#### Device Name / Classification
Trade Name: AddiPak® Unit Dose Vials Classification Name: Nebulizer (Direct Patient Interface) Product Code: CAF Classification Panel: Anesthesiology (Respiratory) Regulatory Class: Class II Regulation Number: 21 CFR 868.5630
# Predicate Device
Hudson RCI® AddiPak® Unit Dose Vials K142153
#### Reference Devices
Holopack K972466 – Sodium Chloride Inhalation Solution K972467 - Sterile Water for Inhalation
#### Device Description
AddiPak® unit dose solutions are pre-filled vials of bland liquids for inhalation therapy.
Contents of these products may be sterile water or a 0.45% sodium chloride solution (half-normal saline). Vials are factory-sealed, made of translucent, color-coded polyethylene, and are available in two sizes (3mL and 5mL). These products are single-use, and intended for inhalation only. Color-coded vials identify contents as sterile
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Traditional 510(k) Premarket Notification Hudson RCI® AddiPak® Unit Dose Vials All information on this page is confidential.
water (blue) and half-normal 0.45% saline (green).
The pre-filled vials have a perforated, break-away twist cap for dispensing solution. When twisted by the user, cap breaks away and open a small hole for solution to pass through. Vials are designed with inverted graduations to allow the clinician to read volume while dispensing solution. Addipak unit dose vials conforms to the specifications of United States Pharmacopeia – National Formulary, Sterile Water for Inhalation and Sterile Sodium Chloride for Inhalation monograph.
## Indications for Use
The AddiPak® Unit Dose Vial may be used in conjunction with a non-ventilator nebulizer for lavage therapy, or for tracheal irrigation.
These products are single-use, disposable, and intended for inhalation only.
# Principle of Operation
These products are used with a nebulizer for lavage and tracheal lavage.
## Environment of Use
The AddiPak® Unit Dose Vials are intended for use in home, hospital, and sub-acute facilities.
## Patient Population
The AddiPak® Unit Dose Vials are intents requiring lavage therapy or tracheal irrigation. This includes infants (weighing ≥ 10kg), children, adolescents, and adults.
#### Summary of Technological Characteristics
| Device<br>Characteristic | Proposed Device<br>Addipak® | Primary Predicate<br>Device Addipak®<br>K142153 | References<br>Holopack<br>K972466<br>K972467 | Comparison<br>Analysis |
|--------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------|
| Manufacturer | Medline Industries (formerly<br>Teleflex) | Teleflex | Holopack | |
| Product Code | CAF | CAF | CAF | Same |
| Indications for<br>Use | The AddiPak® Unit Dose Vial<br>may be used in conjunction<br>with a non-ventilator<br>nebulizer for lavage therapy,<br>or for tracheal irrigation. | The Hudson RCI®<br>AddiPak® Unit Dose<br>Vial, 0.9% Full Normal<br>saline Solution may be<br>used in conjunction with a<br>non-ventilator nebulizer<br>for lavage therapy, or for<br>tracheal irrigation. | The intended use of<br>these<br>sterile single use<br>devices is as<br>accessories to<br>medicinal<br>nonventilatory<br>nebulizers in<br>respiratory therapy<br>or for<br>tracheal irrigation or<br>lavage. | Same |
| Regulation<br>Number | 21 CFR 868.5630 | 21 CFR 868.5630 | 21 CFR 868.5630 | Same |
# TABLE 9-1: COMPARISON OF PROPOSED AND PREDICATE DEVICES
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Traditional 510(k) Premarket Notification Hudson RCI® AddiPak® Unit Dose Vials All information on this page is
| Solutions | Sterile water<br>0.45% Half Normal Saline | --<br>0.9% Full Normal Saline | Sterile water<br>(K972467)<br>0.45% Half Normal<br>Saline (K972466) | Same as<br>references |
|-------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------|----------------------------|
| Packaging Size | 3 mL, 5 mL | 3 mL, 5 mL, 15 mL | 3 mL, 5 mL | Same size as<br>references |
| Shelf Life | 2 years from date of<br>manufacture | 2 years from date of<br>manufacture | Not specified | Same |
| Materials in fluid<br>contact | Vial LDPE | Vial LDPE | Vial LDPE | Same |
| Prescription vs.<br>OTC | Prescription | Prescription | Prescription | Same |
| Contraindications | No known contraindications | No known<br>contraindications | No known<br>contraindications | Same |
| Sterile vs. Non-<br>Sterile | Sterile – Reverse Osmosis per<br>USP <71> | Sterile – Reverse Osmosis<br>per USP <71> | Sterile – Reverse<br>Osmosis per USP<br><71> | Same |
| Vial Design | Pinched seam between vial<br>and cap for opening<br>Nozzle opening design to keep | Pinched seam between<br>vial and cap for opening<br>Nozzle opening design to<br>keep contents within | Pinched seam between<br>vial and cap for<br>opening<br>Nozzle opening<br>design to keep | Same |
| | contents within when inverted<br>Raised inverted graduations | when inverted<br>Raised inverted<br>graduations | contents within when<br>inverted<br>Raised inverted<br>graduations | |
| Single Use vs.<br>Reusable | Single Use | Single Use | Single Use | Same |
| Biocompatibility | • Cytotoxicity<br>• Sensitization<br>• Intracutaneous<br>Reactivity<br>• Material Mediated<br>Pyrogenicity<br>• Chemical<br>Characterization with<br>Toxicological Risk<br>Assessment<br>• USP 661<br>• USP 788 | • Cytotoxicity<br>• Sensitization<br>• Intracutaneous<br>Reactivity<br>• Material Mediated<br>Pyrogenicity<br>• Chemical<br>Characterization<br>with Toxicological<br>Risk Assessment<br>• USP 661<br>• USP 788 | • Not specified | Same |
| Patient<br>Population | Any patients requiring lavage<br>therapy or tracheal irrigation. | Any patients requiring<br>lavage therapy or tracheal<br>irrigation. | Any patients requiring<br>lavage therapy or<br>tracheal irrigation. | Same |
| Used with<br>Nebulizers | Yes | Yes | Yes | Same |
| Environment of | Home, hospital, and sub-acute | Home, hospital, and sub-acute | Not specified | Similar |
| Use | facilities | acute facilities | | |
| Inhalation Only | Yes | Yes | Yes | Same |
| Manufacturing<br>Process | Per USP Monograph<br>Blow-Fill-Seal aseptic process | Per USP Monograph<br>Blow-Fill-Seal aseptic<br>process | Per USP Monograph<br>Blow-Fill-Seal aseptic<br>process | Same |
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Traditional 510(k) Premarket Notification Hudson RCI® AddiPak® Unit Dose Vials All information on this page is confidential.
## Summary of Non-Clinical Testing
## Biocompatibility Testing
- Cytotoxicity
- Sensitization
- Intracutaneous Reactivity ●
- Material Mediated Pyrogenicity ●
- Chemical Characterization with Toxicological Risk Assessment ●
- USP 661
- USP 788 ●
## Performance Testing (Bench)
- Stability .
- . Sterility
# Performance Testing (Animal)
This section does not apply. No animal testing was performed.
# Performance Testing (Clinical)
This section does not apply. No clinical testing was performed.
#### Summary of Clinical Testing
Not applicable.
#### Conclusion
The proposed AddiPak® Unit Dose Vial, Sterile Water and 0.45% Half Normal Saline Solution is substantially equivalent in
- Intended use for adding sterile water or saline solution with a nebulizer for tracheal irrigation or lavage ●
- . Design - used with a nebulizer and disposable prefilled container
- . Principles of operation and solutions similar to the predicate and the same as the references
The differences between the AddiPak® Unit Dose Vial. Sterile Water and 0.45% Half Normal Saline Solution and the predicate devices are:
- . Solution type – sterile water and 0.45% saline
- Size of the packaged solution
- Provided nebulizer - the proposed device does not include a nebulizer
- . Predicate can provide supplemental oxygen during aerosol therapy
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Traditional 510(k) Premarket Notification Hudson RCI® AddiPak® Unit Dose Vials All information on this page is confidential.
The reference devices address each difference of the predicate namely, the indications for use, solutions, technological characteristics, and principle of operation to support substantial equivalence.
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.