K172165 · ArthroCare Corporation · MBI · Aug 17, 2017 · Orthopedic
Device Facts
Record ID
K172165
Device Name
Q-Fix Suture Anchor
Applicant
ArthroCare Corporation
Product Code
MBI · Orthopedic
Decision Date
Aug 17, 2017
Decision
SESE
Submission Type
Special
Regulation
21 CFR 888.3040
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Q-Fix Suture Anchor is intended to be used for soft tissue to bone fixation for: Shoulder: Bankart lesion repair; SLAP lesion repair; acromio-clavicular repair; capsular shift/capsulolabral reconstruction; deltoid repair; rotator cuff tear repair; biceps tenodesis Foot & Ankle: Medial/Lateral repair and reconstruction; midfoot and forefoot repair; Hallux valgus reconstruction; Metatarsal ligament/tendon repair or reconstruction; Achilles tendon repair Elbow: Ulnar or radial collateral ligament reconstruction; lateral epicondylitis repair; biceps tendon reattachment Knee: Extra-capsular repair: medial collateral ligament (MCL), lateral collateral ligament (LCL) and posterior oblique ligament; Iliotibial band tenodesis (IBT); patellar tendon repair; vastus medialis obliquus advancement (VMO); joint capsule closure Hand & Wrist: Collateral ligament repair; Scapholunate ligament reconstruction; Tendon transfers in phalanx; Volar plate reconstruction Hip: Acetabular labral repair
Device Story
Q-Fix Suture Anchor is a bone anchor system for arthroscopic/orthopedic soft tissue-to-bone fixation. Device comprises a bone anchor preloaded on a disposable inserter handle. Operation involves drilling a hole in bone, inserting the anchor, and deploying via expandable compression fit; suture is manually tied to secure tissue. Used in OR by orthopedic surgeons. Output is mechanical fixation of soft tissue to bone, facilitating healing and structural repair. System includes accessory instruments (drills, guides, obturators, suture passers). Proposed device adds a 1.8mm MINI size to existing 1.8mm and 2.8mm line. Single-use, sterile (EtO).
Clinical Evidence
No clinical or animal data included. Bench testing only: static and cyclic fatigue testing performed in simulated human bone substrate per FDA Guidance Document, Testing Bone Anchor Devices (April 1996).
Technological Characteristics
Materials: UHMWPE suture, braided polyester anchor, medical-grade plastics and surgical-grade stainless steel inserter handles. Principle: Expandable compression fit bone locking mechanism; manual suture knot locking. Form factor: 1.8mm, 2.8mm, and 1.8mm MINI sizes. Sterilization: Ethylene oxide (EtO). Connectivity: None.
Indications for Use
Indicated for soft tissue to bone fixation in shoulder, foot, ankle, elbow, knee, hand, wrist, and hip procedures. Applicable to patients requiring ligament, tendon, or labral repair/reconstruction.
Regulatory Classification
Identification
A smooth or threaded metallic bone fixation fastener is a device intended to be implanted that consists of a stiff wire segment or rod made of alloys, such as cobalt-chromium-molybdenum and stainless steel, and that may be smooth on the outside, fully or partially threaded, straight or U-shaped; and may be either blunt pointed, sharp pointed, or have a formed, slotted head on the end. It may be used for fixation of bone fractures, for bone reconstructions, as a guide pin for insertion of other implants, or it may be implanted through the skin so that a pulling force (traction) may be applied to the skeletal system.
{0}------------------------------------------------
Image /page/0/Picture/2 description: The image shows a logo for the U.S. Department of Health and Human Services. The logo features a stylized caduceus symbol, which is often associated with healthcare and medicine. The caduceus is depicted with three intertwined figures, representing the department's mission to protect the health of all Americans and provide essential human services. The text "DEPARTMENT OF" is partially visible on the left side of the logo.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
August 17, 2017
ArthroCare Corporation Ms. Laura Kasperowicz Principal RA Specialist 15285 Alton Parkway Suite 200 Irvine, California 92618
Re: K172165
Trade/Device Name: Q-Fix Suture Anchor Regulation Number: 21 CFR 888.3040 Regulation Name: Smooth or threaded metallic bone fixation fastener Regulatory Class: Class II Product Code: MBI Dated: July 17, 2017 Received: July 18, 2017
Dear Ms. Kasperowicz:
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
{1}------------------------------------------------
Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical devicerelated 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.
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/ResourcesforYou/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.
## Mark N. Melkerson -S
Mark N. Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
| DEPARTMENT OF HEALTH AND HUMAN SERVICES<br>Food and Drug Administration | Page 1 of 1<br>Form Approved: OMB No. 0910-0120<br>Expiration Date: January 31, 2017<br>See PRA Statement below. |
|-------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------|
|-------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------|
**Indications for Use**
| 510(k) Number (if known) | K172165 |
|--------------------------------|--------------------------------------------------------------------------------------|
| Device Name | Q-Fix Suture Anchor |
| Indications for Use (Describe) | The Q-Fix Suture Anchor is intended to be used for soft tissue to bone fixation for: |
Shoulder: Bankart lesion repair; SLAP lesion repair; acromio-clavicular repair; capsular shift/capsulolabral
reconstruction; deltoid repair; rotator cuff tear repair; biceps tenodesis
Foot & Ankle: Medial/Lateral repair and reconstruction; midfoot and forefoot repair; Hallux valgus reconstruction;
Metatarsal ligament/tendon repair or reconstruction; Achilles tendon repair
Elbow: Ulnar or radial collateral ligament reconstruction; lateral epicondylitis repair; biceps tendon reattachment
Knee: Extra-capsular repair: medial collateral ligament (MCL), lateral collateral ligament (LCL) and posterior oblique
ligament; Iliotibial band tenodesis (IBT); patellar tendon repair; vastus medialis obliquus advancement (VMO); joint
capsule closure
Hand & Wrist: Collateral ligament repair; Scapholunate ligament reconstruction; Tendon transfers in phalanx; Volar plate
reconstruction
Hip: Acetabular labral repair
| Type of Use (Select one or both, as applicable) | |
|-------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| | <label><input checked="checked" type="checkbox"/> Prescription Use (Part 21 CFR 801 Subpart D)</label><br><label><input type="checkbox"/> Over-The-Counter Use (21 CFR 801 Subpart C)</label> |
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."
{3}------------------------------------------------
Image /page/3/Picture/0 description: The image shows the logo for ArthroCare. The logo consists of a circular design on the left and the word "ArthroCare" on the right. The circular design is made up of several curved lines in a maroon color. The word "ArthroCare" is written in a dark gray color.
# 510(k) Summary
ArthroCare® Corporation
Q-Fix® Suture Anchor
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92.
#### General Information
| Submitter Name: | ArthroCare Corporation, a Smith & Nephew Company |
|-----------------|----------------------------------------------------------------------------------------------------------|
| Address | 15285 Alton Parkway, Suite 200<br>Irvine, CA. 92618 |
| Contact Person: | Laura Kasperowicz<br>Principle Regulatory Affairs Specialist<br>Phone: 949-585-2406<br>Fax: 949-585-2401 |
| Date Prepared: | July 17, 2017 |
#### Device Name
| Proprietary Name: | Q-Fix® Suture Anchor |
|----------------------|----------------------------------------------------|
| Common Name: | Bone Anchor |
| Classification Name: | Smooth or threaded metallic bone fixation fastener |
| Device Class: | Class II |
| Product Code: | MBI |
| CFR Section: | 21 CFR 888.3040 |
#### Predicate Device
ArthroCare Q-Fix® Suture Anchor: K133727 (cleared January 16, 2014)
#### Description
The purpose of this submission is to seek clearance for a line extension and additions to the accessory instrumentation used with the previously cleared Q-Fix Suture Anchor (K133727). There are no changes to the previously cleared indications for use, materials, design, technology, method of anchor insertion and or tissue attachment.
The Q-Fix Suture Anchor (Q-Fix) is a bone anchor with inserter handle designed for use in arthroscopic and orthopedic procedures. This family of suture anchors previously was available in two sizes, 1.8mm and 2.8mm. This submission proposes an additional size of Q-Fix Suture Anchor, the 1.8mm Q-Fix MINI Suture Anchor.
{4}------------------------------------------------
Image /page/4/Picture/0 description: The image shows the logo for ArthroCare. The logo consists of a stylized, circular graphic on the left and the word "ArthroCare" on the right. The graphic is made up of several curved lines in a maroon color, arranged to create a sense of movement or flow. The text "ArthroCare" is written in a dark gray, sans-serif font, with a small registered trademark symbol next to the word "Care".
The O-Fix consists of two primary parts: a bone anchor inserter, which is preloaded with the anchor. The anchor inserter is a disposable tool.
The entire product is packaged in a tray with a Tyvek® lid, and the finished product is sterilized by ethylene oxide. Both the anchor and inserter are designed for single use only.
The Q-Fix Suture Anchor consists of the bone anchor and associated instruments for implanting the bone anchor. In accordance with the ArthroCare Product Development Process, testing was performed to demonstrate the proposed device is substantially equivalent to the predicate device. Mechanical testing was performed in accordance with the requirements of the FDA Guidance Document, Testing Bone Anchor Devices, April 1996.
#### Intended Use/Indications For Use
The Q-Fix Suture Anchor is intended to be used for soft tissue to bone fixation for:
| Shoulder: | Bankart lesion repair; SLAP lesion repair; acromio-clavicular repair; capsular<br>shift/capsulolabral reconstruction; deltoid repair; rotator cuff tear repair; biceps<br>tenodesis |
|---------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Foot & Ankle: | Medial/Lateral repair and reconstruction; midfoot and forefoot repair; Hallux<br>valgus reconstruction; Metatarsal ligament/tendon repair or reconstruction;<br>Achilles tendon repair |
| Elbow: | Ulnar or radial collateral ligament reconstruction; lateral epicondylitis repair;<br>biceps tendon reattachment |
| Knee: | Extra-capsular repair medial collateral ligament (MCL), lateral collateral ligament<br>(LCL) and posterior oblique ligament; Iliotibial band tenodesis (IBT); patellar<br>tendon repair; vastus medialis obliquus advancement (VMO); joint capsule closure |
| Hand & Wrist: | Collateral ligament repair; Scapholunate ligament reconstruction; Tendon transfers<br>in phalanx; Volar plate reconstruction |
| Hip: | Acetabular labral repair |
#### Non-Clinical Data
Bench testing was performed on both the proposed and predicate devices in accordance with the FDA Guidance Document, Testing Bone Anchors, April 1996. This in vitro testing involved insertion of the anchors into a simulated human bone substrate followed by both static and cyclic fatigue testing.
The test results demonstrate that the Q-Fix meets its design, performance, and safety specifications. Based on the test results, the proposed device performs as intended and mechanical properties are substantially equivalent to the predicate devices when used in accordance with labeling.
#### Clinical Data
No clinical or animal data are included in this submission.
{5}------------------------------------------------
Image /page/5/Picture/0 description: The image shows the ArthroCare logo. The logo consists of a circular design on the left, made up of several curved red lines. To the right of the design is the company name, "ArthroCare," in a dark gray sans-serif font. A registered trademark symbol is located to the upper right of the word "Care."
### Summary
All testing demonstrates that the Q-Fix performs as intended and has acceptable mechanical properties when used in accordance with its labeling.
The minor differences between the Q-Fix system and predicate device system do not raise any new questions of safety or effectiveness.
| Comparison of Technological Characteristics | | | | |
|---------------------------------------------|----------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------|--|--|
| Characteristics | Predicate Devices & System<br>1.8mm Q-Fix & 2.8mm Q-Fix<br>(K133727) | Proposed Devices & System<br>1.8mm Q-Fix, 2.8mm Q-Fix & 1.8mm Q-Fix<br>MINI | | |
| Intended Use | Fixation of soft tissue to bone | Same | | |
| Delivery Method | Arthroscopic and Limited Access | Same | | |
| How Supplied | Packaged in thermoform tray with Tyvek lid,<br>Sterile (EtO), Single Use | Same | | |
| Suture Material | No. 2 UHMWPE Suture | Same | | |
| Anchor Material | Braided Polyester | Same | | |
| Inserter Handle Materials | Medical Grade Plastics and<br>Surgical Grade Stainless Steels | Same | | |
| Method of Anchor Insertion | Inserted into a predrilled hole | Same | | |
| Bone Locking Mechanism | Expandable Compression Fit | Same | | |
| Suture Locking Mechanism | Manually tied suture knot | Same | | |
| # of Suture Legs | Two (1.8mm) & Four (2.8mm) | Same | | |
| Sizes Offered | 1.8mm & 2.8mm | 1.8mm, 2.8mm & 1.8mm MINI | | |
| Deployed Length | 15mm for 1.8mm Q-Fix Anchor<br>20mm for 2.8mm Q-Fix Anchor | 15mm for 1.8mm Q-Fix Anchor<br>20mm for 2.8mm Q-Fix Anchor<br>10mm for 1.8mm Q-Fix MINI Anchor | | |
| Bone hole OD | 2.1mm (0.083") for 1.8mm Q-Fix Anchor<br>3.1mm (0.121") for 2.8mm Q-Fix Anchor | Same | | |
| Bone hole depth | 22.3mm for 1.8mm Q-Fix Anchor<br>26.8mm for 2.8mm Q-Fix Anchor | 22.3mm for 1.8mm Q-Fix Anchor<br>26.8mm for 2.8mm Q-Fix Anchor<br>17.1mm for 1.8mm Q-Fix MINI Anchor | | |
| Accessory Instruments | Nonsterile, Reusable Drill, Drill Guide,<br>Obturator and Sterile, Disposable Drill, Drill<br>Guide, Obturator | Same | | |
| | Bone Punch, Knot Pusher | Same | | |
| | 1.8mm & 2.8mm PathFinder® | Same | | |
| | FirstPass® Suture Passer | FirstPass® Suture Passer<br>FirstPass® ST Suture Passer<br>Accu-Pass® Direct Suture Passer<br>SpeedStitch® Suture Passer | | |
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
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.