K212385 · Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. · DQA · Aug 16, 2022 · Cardiovascular
Device Facts
Record ID
K212385
Device Name
YUWELL Finger Pulse Oximeter
Applicant
Jiangsu Yuyue Medical Equipment & Supply Co., Ltd.
Product Code
DQA · Cardiovascular
Decision Date
Aug 16, 2022
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.2700
Device Class
Class 2
Attributes
Pediatric
Indications for Use
The YUWELL® Finger Pulse Oximeter is a non-invasive, non-sterile, reusable, spot checking device which can measure and display SpO2 and pulse rate through finger. It is intended for adults and children (weight > 30kg) and is expected for home and hospital inspection. The device is not for continuous monitoring, use during motion or for patients with low perfusion.
Device Story
Device is a portable, non-invasive fingertip pulse oximeter; measures SpO2 and pulse rate via photoelectric sensor. User inserts finger into clamp; device uses red and infrared light absorption (Lambert-Beer law) to detect hemoglobin oxygenation. Electronic circuits and microprocessor process signals; results displayed on OLED/LED screen. Used in home and hospital settings by patients or clinicians for spot-checking. No alarms; powered by two AAA batteries. Provides immediate physiological data to assist in health status assessment; benefits patient by enabling convenient, non-invasive oxygen saturation monitoring.
Clinical Evidence
Clinical study conducted on 12 healthy adult volunteers (ages 18-50, varying pigmentation) under steady-state, non-motion conditions. Induced hypoxia used to achieve saturation levels between 70-100%. Accuracy compared against arterial blood CO-Oximetry. Results demonstrated an Arms (root-mean-square error) of less than 3% over the 70-100% range.
Technological Characteristics
Photoelectric Oxyhemoglobin Inspection Technology using red (660nm) and infrared (905-940nm) light. Components: LED/OLED display, photosensitive element, microprocessor, ABS housing, medical silicone gel cushion. Powered by 2x AAA batteries. Standards: ISO 80601-2-61, IEC 60601-1, IEC 60601-1-11, IEC 60601-1-2. Biocompatibility per ISO 10993-1.
Indications for Use
Indicated for adults and children (weight >30 kg) for non-invasive, non-sterile, spot-checking of SpO2 and pulse rate in home and hospital settings. Not indicated for continuous monitoring, use during motion, or patients with low perfusion.
Regulatory Classification
Identification
An oximeter is a device used to transmit radiation at a known wavelength(s) through blood and to measure the blood oxygen saturation based on the amount of reflected or scattered radiation. It may be used alone or in conjunction with a fiberoptic oximeter catheter.
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August 16, 2022
Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. Yuzhuo Wang Medical Device Registered Engineer Yunyang Industrial Park Danyang, Jiangsu 212300 China
Re: K212385
Trade/Device Name: YUWELL Finger Pulse Oximeter Regulation Number: 21 CFR 870.2700 Regulation Name: Oximeter Regulatory Class: Class II Product Code: DQA Dated: July 12, 2022 Received: July 18, 2022
Dear Yuzhuo Wang:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's
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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 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE(@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
for Todd Courtney Assistant Director DHT1C: Division of Sleep Disordered Breathing, Respiratory and Anesthesia Devices 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
Form Approved: OMB No. 0910-0120 Expiration Date: 06/30/2023 See PRA Statement below.
510(k) Number (if known) K212385
Device Name
YUWELL® Finger Pulse Oximeter: YX102, YX103, YX301, YX306
Indications for Use (Describe)
The YUWELL® Finger Pulse Oximeter is a non-invasive, non-sterile, spot checking device which can measure and display SpO2 and pulse rate through finger. It is intended for adults and children (weight >30 kg) and is expected for home and hospital inspection. The device is not for continuous monitoring,use during motion or for patients with low perfusion.
Type of Use (Select one or both, as applicable)
> Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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### 510(K) SUMMARY
#### 1. OWNER/SUBMITTER'S INFORMATION
| Company Name: | JIANGSU YUYUE MEDICAL EQUIPMENT & SUPPLY<br>CO.,LTD. |
|------------------|------------------------------------------------------------------------------|
| Company Address: | Yunyang Industrial Park 212300 Danyang Jiangsu PEOPLE'S<br>REPUBLIC OF CHINA |
| Contact: | Wang, Yuzhuo |
| Phone: | 0511-86900827 |
| Fax: | 0511-86900991 |
| Email: | wang.yz@yuyue.com.cn |
| Date prepared: | July 12, 2022 |
#### 2. TRADE NAME, COMMON NAME, CLASSIFICATION
| Trade Name: | YUWELL® Finger Pulse Oximeter |
|------------------------|-------------------------------|
| Common Name: | Finger Pulse Oximeter |
| Model: | YX102, YX103, YX301, YX306 |
| Product Code : | DQA |
| Regulation Number: | 21 CFR 870.2700 |
| Classification Name: | Oximeter |
| Device Classification: | Class II |
| FDA 510 (k) #: | K212385 |
#### 3. DENTIFICATION OF PREDICATE DEVICE(S)
The identification of predicates within this submission is as follow:
| Manufacturer: | Beijing Choice Electronic Technology Co., Ltd. |
|------------------------|------------------------------------------------|
| Trade Name: | Fingertip Pulse Oximeter |
| Common Name: | Pulse Oximeter |
| Product Code: | DQA |
| Regulation Number: | 21 CFR 870.2700 |
| Classification Name: | Oximeter |
| Device Classification: | Class II |
| FDA 510 (k) #: | K101577 |
#### 4、DESCRIPTION OF THE DEVICE
The YUWELL® Finger Pulse Oximeter is a non-invasive, non-sterile, spot checking device which can measure and display SpO2 and pulse rate through finger. It is intended for adults and children (weight >30 kg) and is expected for home and hospital inspection. The device is not for continuous monitoring, use during motion or for patients with low perfusion.
The YUWELL® Finger Pulse Oximeter features in small volume, low power consumption, convenient operation and portable. It is only necessary for patient to put one of his fingers into a fingertip photoelectric sensor for measurement, and then the screen will display the measured
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value of Pulse Oxygen Saturation (SpO2) and pulse rate(PR) . The device consists of electronic circuits, plastic housing. OLED/LED display(differentiated by models) and button
(YX301,YX306 equipped, YX102,YX103 not equipped) which powered by two alkaline AAA batteries. The device does not include alarms.
#### 5、INTENDED USE
The YUWELL® Finger Pulse Oximeter is a non-invasive, non-sterile, reusable, spot checking device which can measure and display SpO2 and pulse rate through finger. It is intended for adults and children (weight > 30kg) and is expected for home and hospital inspection. The device is not for continuous monitoring, use during motion or for patients with low perfusion.
#### 6、TECHNOLOGICAL CHARACTERISTIC
Principle of the Oximeter is as follows: An experience formula of data process is established taking use of Lambert Beer law according to Spectrum Absorption Characteristics of deoxyhaemoglobin (HHb) and Oxyhemoglobin (O2Hb ) in glow and near-infrared zones. Operation principle of the instrument is Photoelectric Oxyhemoglobin Inspection Technology is adopted in accordance with Capacity Pulse Scanning and Recording Technology, so that two beams of different wavelength of light (red light and infrared light) can be focused onto human nail tip through perspective clamp finger-type sensor. Then measured signal can be obtained by a photosensitive element, information acquired through which will be shown display through process in electronic circuits and microprocessor.
| Description | Subject Device<br>(K212385) | Predicate Device<br>(K101577) | Remark |
|---------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------|
| Manufacturer | JIANGSU YUYUE MEDICAL<br>EQUIPMENT & SUPPLY<br>CO.,LTD. | Beijing Choice Electronic<br>Technology Co., Ltd. | - |
| Product Name | Finger Pulse Oximeter | Fingertip Pulse Oximeter | - |
| Model | YX102,YX103,YX301,YX306 | MD300C63 | - |
| Intended Use | The YUWELL® Finger Pulse<br>Oximeter is a non-invasive, non-<br>sterile, reusable, spot checking<br>device which can measure and<br>display SpO2 and pulse rate<br>through finger. It is intended for<br>adults and children (weight ><br>30kg) and is expected for home<br>and hospital inspection. The<br>device is not for continuous<br>monitoring, use during motion or<br>for patients with low perfusion. | Fingertip pulse oximeter is a<br>portable, non-invasive devices<br>intended for spot- checking of<br>arterial hemoglobin oxygen<br>saturation (SpO2) and pulse<br>rate of adult and pediatric<br>patient at home, and hospital<br>(including clinical use in<br>internist/surgery, Anesthesia,<br>and intensive care units). Not<br>for continuous monitoring. | Note 1 |
| | | | |
| Patient populations | adults and children (weight >30<br>kg) | adult and pediatric patient | Note 1 |
| Measuring<br>characteristics | Spot-checking<br>Not for continuous monitoring,<br>use during motion or for patients<br>with low perfusion. | Spot-checking<br>Not for continuous<br>monitoring, using during<br>motion or using with low<br>perfusion. | Same |
| Application sites | Finger | Finger | Same |
| Components | Power supply module, detector<br>and emitter LED, signal collection<br>and processor module, display<br>module. | Detector and emitter LED,<br>signal amplify unit, CPU, data<br>display unit and power unit. | Same |
| Product principle | An experience formula of data<br>process is established taking use<br>of Lambert Beer law according to<br>Spectrum Absorption<br>Characteristics of<br>deoxyhaemoglobin(HHb) and<br>Oxyhemoglobin(O2Hb) in glow<br>and near-infrared zones. Operation<br>principle of the instrument is<br>Photoelectric Oxyhemoglobin<br>Inspection Technology is adopted<br>in accordance with Capacity Pulse<br>Scanning and Recording<br>Technology, so that two beams of<br>different wavelength of light (red<br>light and infrared light) can be<br>focused onto human nail tip<br>through perspective clamp finger-<br>type sensor. Then measured signal<br>can be obtained by a<br>photosensitive element,<br>information acquired through<br>which will be shown display<br>through process in electronic<br>circuits and microprocessor. | An mathematical formula is<br>established making use of<br>Lambert Beer Law according<br>to Spectrum Absorption<br>Characteristics of Reductive<br>hemoglobin (RHb) and<br>Oxyhemoglobin (HbO2 ) in<br>glow and near-infrared zones.<br>Operation principle of the<br>instrument: Photoelectric<br>Oxyhemoglobin Inspection<br>Technology is adopted in<br>accordance with Capacity<br>Pulse Scanning and Recording<br>Technology, so that two beams<br>of different wavelength of<br>light (660nm glow and 940nm<br>near infrared light) can be<br>focused onto a human nail tip<br>through a clamping finger-<br>type sensor. A measured signal<br>obtained by a photosensitive<br>element, will be shown on the<br>oximerer's display through<br>process in electronic circuits<br>and microprocessor. | Same |
| Measurement<br>wavelength Red | YX102, YX103, YX306:<br>660 ±8nm | 660± 2nm | Note 2 |
| light | YX301: 660 ± 20nm | | |
| Measurement<br>wavelength-Infrared<br>light | YX102, YX103, YX306: 905 ± 25nm | 940± 10nm | |
| | YX301: 940 ± 25nm | | |
| Display Type | YX102, YX103: LED | | Note 3 |
| | YX301, YX306: OLED | OLED | Same |
| Power Supply | 2*AAA alkaline batteries | 2*AAA alkaline batteries | Same |
| Battery Working<br>Time | YX102, YX103, YX306: Two AAA batteries can be operated continuously for 17 hours | Two AAA alkaline batteries can be operated continuously for 30 hours. | Note 4 |
| | YX301: Two AAA batteries can be operated continuously for 45 hours | | |
| Display Content | YX102, YX103: SpO2, PR, Pulse bar, Low battery | SpO2, PR, Power low indicator, Pulse bar graph, Waveform | Note 5 |
| | YX301, YX306: SpO2, PR, Pulse volume wave, Pulse bar, Battery level, Symbol of gravity sensing mode | | |
| User Interface | YX102, YX103: 1 display direction | 4 display directions | Note 6 |
| | YX301, YX306: 4 display directions | | Same |
| SpO2 Display Range | 0%~100% | 0~100% | |
| SpO2 Measurement<br>Range | 70%~100% | 70%~100% | Same |
| SpO2<br>Accuracy | 70%~80%, 80%~90%,<br>90%~100%, ± 2%;<br>< 70%, no definition | 70%~100%, ± 2%;<br>0~69% no definition | Same |
| SpO2 Resolution | 1% | 1% | Same |
| PR Display Range | 25bpm~250bpm | 0bpm~254bpm | |
| PR Measurement<br>Range | 25bpm~250bpm | 30bpm~235bpm | Note 7 |
| PR Accuracy | ±1% or ±1 bpm(larger) | 30bpm~99bpm, ± 2bpm;<br>100bpm~235bpm, ± 2% | |
| PR Resolution | 1bpm | 1bpm | Same |
| Sterile | No | No | Same |
| Operation<br>environment | Ambient temperature:<br>5°C~40°C;<br>Relative humidity: ≤80% ;<br>Atmospheric pressure:<br>860hPa~1060hPa. | Operation Temperature:<br>5°C ~40°C<br>Ambient Humidity: ≤80% no<br>condensation in operation;<br>Atmospheric pressure: Not<br>mentioned | Note 8 |
| Storage & Transport<br>environment | Ambient temperature:<br>-20°C~+55°C;<br>Relative humidity: ≤93%, no<br>condensation ;<br>Atmospheric pressure:<br>500hPa~1060hPa. | Storage Temperature:-20°C~<br>+55°C:<br>Ambient Humidity: ≤93% no<br>condensation in storage;<br>Atmospheric pressure: Not<br>mentioned | |
| Contacting<br>material | Enclosure: ABS | Enclosure: ABS | Same |
| | Fingertip Cushion: Medical<br>Silicone Gel | Fingertip Cushion and<br>Button : Medical Silicone Gel | Same |
| | YX301 Button: PC | | Note 9 |
| | YX102, YX103 Button: None<br>YX306 Button: ABS | | |
| | | | |
| Performance | ISO 80601-2-61 | ISO 9919…
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.