Aqueduct 100 Plus Cervical Dilation Balloon Catheter
Applicant
Gtimd, LLC
Product Code
PON · Obstetrics/Gynecology
Decision Date
Nov 6, 2020
Decision
SESE
Submission Type
Special
Regulation
21 CFR 884.4260
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Aqueduct 100 Plus Cervical Dilation Balloon Catheter is intended to be used whenever cervical softening and dilation is desired. Some examples are: treatment of cervical stenosis, IUD placement and removal, Radium placement, drainage of uterine cavity, endometrial biopsy, uterine curettage, suction cannula aspiration, operative hysteroscopy.
Device Story
The Aqueduct 100 Plus is a balloon cervical dilation catheter used to mechanically dilate the cervical canal. The device consists of a 2-lumen polycarbonate shaft and a single cylindrical dilation balloon. In clinical use, a physician inserts the catheter through the vagina into the cervix, positioning the balloon at the internal and external cervical os. The balloon is inflated with 12.5 ml of saline to provide gradual mechanical dilation. An infusion lumen allows for saline injection to confirm dilation completion. The procedure typically achieves 8-9 mm dilation within 5 minutes, with total procedure time of 6-7 minutes. The device is intended for use in clinical settings by healthcare professionals. It benefits patients by providing a controlled, mechanical method for cervical dilation to facilitate various gynecological procedures.
Clinical Evidence
Bench testing only. No clinical data presented. Performance testing included biocompatibility (ISO 10993-5, -10), sterilization validation (ISO 11135, ISO 10993-7), and mechanical testing per ISO 10555-1 and ISO 10555-4. Accelerated aging studies confirmed 15-month shelf-life stability for dimensional verification, balloon burst pressure, fatigue, inflation/deflation time, bond strength, and pushability.
Technological Characteristics
2-lumen polycarbonate shaft; Pebax dilation balloon. Inflated diameter 10 mm; burst pressure > 8 atm. Sterilized via ethylene oxide (EO) per ANSI/AAMI/ISO 11135:2014. Complies with ISO 10555-1:2013 and ISO 10555-4:2013 for balloon dilation catheters. Biocompatibility per ISO 10993-1.
Indications for Use
Indicated for patients requiring cervical softening and dilation for procedures including cervical stenosis treatment, IUD placement/removal, Radium placement, uterine cavity drainage, endometrial biopsy, uterine curettage, suction cannula aspiration, and operative hysteroscopy.
Regulatory Classification
Identification
A hygroscopic Laminaria cervical dilator is a device designed to dilate (stretch open) the cervical os by cervical insertion of a conical and expansible material made from the root of a seaweed (Laminaria digitata or Laminaria japonica). The device is used to induce abortion.
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November 6, 2020
GTIMD LLC Eran Levit Official Correspondent 6 Columbia Drive Amherst, NH 03031
Re: K202427
> Trade/Device Name: Aqueduct 100 Plus Cervical Dilation Balloon Catheter Regulation Number: 21 CFR § 884.4260 Regulation Name: Hygroscopic Laminaria Cervical Dilator Regulatory Class: II Product Code: PON Dated: September 30, 2020 Received: October 9, 2020
Dear Eran Levit:
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.
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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 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatoryinformation/postmarketing-safety-reporting-combination-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 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 Monica D. Garcia, Ph.D. Assistant Director DHT3B: Division of Reproductive, Gynecology and Urology Devices OHT3: Office of GastroRenal, ObGyn, General Hospital and Urology 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) K202427
#### Device Name
Aqueduct 100 Plus Cervical Dilation Balloon Catheter
Indications for Use (Describe)
The Aqueduct 100 Plus Cervical Dilation Balloon Catheter is intended to be used whenever cervical softening and dilation is desired. Some examples are: treatment of cervical stenosis, IUD placement and removal, Radium placement, drainage of uterine cavity, endometrial biopsy, uterine curettage, suction cannula aspiration, operative hysteroscopy.
Type of Use (Select one or both, as applicable)
| <span></span> Prescription Use (Part 21 CFR 801 Subpart D) | <span></span> Over-The-Counter Use (21 CFR 801 Subpart C) |
|------------------------------------------------------------|-----------------------------------------------------------|
|------------------------------------------------------------|-----------------------------------------------------------|
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www.gtimd.com
K202427
# 510(K) SUMMARY - K202427
| I. | Submitter | |
|----|----------------------|-------------------------------------|
| | Submitter's Name: | GTIMD LLC |
| | Address: | 6 Columbia Drive, Amherst, NH 03031 |
| | Phone: | (603) 809-3089 |
| | Contact Person: | Eran Levit |
| | Contact Email: | elevit@gtimd.com |
| | Date of Preparation: | November 5, 2020 |
- II. Device
| Name of Device: | Aqueduct 100 Plus Cervical Dilation Balloon Catheter |
|--------------------|---------------------------------------------------------|
| Common Name: | Catheter, Balloon, Dilation of the Cervical Canal |
| Regulation Number: | 21 CFR 884.4260 |
| Regulation Name: | Hygroscopic Laminaria Cervical Dilator |
| Regulatory Class: | II |
| Product Code: | PON (Catheter, Balloon, Dilation of the Cervical Canal) |
- III. Predicate Devices
### Primary Predicate Device:
Aqueduct 100 Cervical Dilation Balloon Catheter (K160664) manufactured by GTIMD LLC
This predicate device has not been subject to a design-related recall.
- IV. Device Description
The Aqueduct 100 Plus Cervical Dilation Balloon Catheter is a balloon cervical dilation catheter which enables the simultaneous dilation of both sides of the cervical canal. The subject device is an updated version of the Aqueduct 100 Cervical Dilation Balloon Catheter cleared under K160664 that merges two separate dilation balloons into one balloon, removes the anchor balloon, replaces the four-way hub with a three-way hub, and removes the stylet from the shaft.
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The catheter consists of a 2-lumen shaft. One lumen inflates a cylindrical dilation balloon. A second lumen is for infusion of saline solution. In use, the catheter is inserted through the vagina and cervical canal and into the uterus. The catheter is positioned inside the cervix. The user aligns the cylindrical balloon at the internal cervical os and external cervical os. The balloon is inflated with 12.5 ml of saline, providing gradual mechanical dilation of the cervix.
After 3 minutes of dilation of the internal and external orifices of the uterus, a controlled injection of 1-2.5 ml of saline may be made through the catheter infusion lumen which exits on the distal end of the catheter. Evidence that cervical dilation is complete can be determined once droplets of the saline injection are observed exiting through the external opening of the cervix. Optimal dilation of 8-9 mm within the cervical canal is typically achieved following 5 minutes of balloon dilation. The entire procedure from catheter insertion to removal is completed in 6-7 minutes.
The deflation of the balloon is conducted by attaching a luer lock syringe to the swabable valve and removing saline from the balloon.
The subject device is packaged in a mylar/Tyvek pouch and ethylene oxide (EO) sterilized to a SAL 10-6. The packaged device has a shelf-life of 15 months.
- V. Indications For Use
The Aqueduct 100 Plus Cervical Dilation Balloon Catheter is intended to be used whenever cervical softening and dilation is desired. Some examples are: treatment of cervical stenosis, IUD placement and removal, Radium placement, drainage of uterine cavity, endometrial biopsy, uterine curettage, suction cannula aspiration, operative hysteroscopy.
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- VI. Comparison of Intended Use and Technological Characteristics with the Predicate Device
The table below provides a comparison of the intended use and technological characteristics of the subject and predicate device:
| | Subject Device | Predicate Device |
|---------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| | Aqueduct 100 Plus Cervical<br>Dilation Balloon Catheter<br>(K202427) | Aqueduct 100 Cervical<br>Dilation Balloon Catheter<br>(K160664) |
| Manufacturer | GTIMD LLC | GTIMD LLC |
| Indications for<br>Use | The Aqueduct 100 Plus<br>Cervical Dilation Balloon<br>Catheter is intended to be<br>used whenever cervical<br>softening and dilation is<br>desired. Some examples are:<br>treatment of cervical stenosis,<br>IUD placement and removal,<br>Radium placement, drainage<br>of uterine cavity, endometrial<br>biopsy, uterine curettage,<br>suction cannula aspiration,<br>operative hysteroscopy. | The Aqueduct 100 Cervical<br>Dilation Balloon Catheter is<br>intended to be used whenever<br>cervical softening and dilation<br>is desired. Some examples are:<br>treatment of cervical stenosis,<br>IUD placement and removal,<br>Radium placement, drainage<br>of uterine cavity, endometrial<br>biopsy, uterine curettage,<br>suction cannula aspiration,<br>operative hysteroscopy. |
| Balloon<br>volume(s) | Dilation Balloon: 12.5 mL | Anchor Balloon: 2.5 mL<br>Dilation Balloons: 7.5 mL<br>(combined) |
| Balloon burst<br>pressure | Dilation Balloon: > 8 atm | Anchor Balloon: > 2 atm<br>Dilation Balloon: > 2 atm |
| Usable Length | 25 cm | 25 cm |
| Outer diameter | 3.3 mm deflated and 10 mm<br>inflated | 3.3 mm deflated and 12 mm<br>inflated |
| Shaft type | 2-lumen polycarbonate shaft | 3 lumen Pebax shaft |
| Materials | Pebax balloons and<br>polycarbonate catheter | Pebax balloons and Pebax<br>catheter |
| Dilation<br>Mechanism | Fixed diameter balloons that<br>expand to 10 mm | Fixed diameter balloons that<br>expand to 12 mm |
| Stylet | No | Yes, unremovable |
| Shelf Life | 15 months | 2 years |
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Image /page/6/Picture/1 description: The image shows the logo for "GTIMD CATHETER SOLUTIONS". The text "GTIMD" is in a large, bold, sans-serif font and is colored in a light blue. Below "GTIMD" is the text "CATHETER SOLUTIONS" in a smaller, sans-serif font and is colored in gray.
The Indications for Use statement for the subject device is the same as the predicate device. Therefore, the intended use of the subject and predicate devices are the same.
The following technological differences exist between the subject and predicate devices:
- The balloon volume and burst pressure specifications are increased for the subject device compared to the predicate device.
- The subject device balloon dimensions are different than the predicate device. The inflated diameter of the dilation balloon is less than the predicate device.
- . The subject device includes one dilation balloon while the predicate device contains two separate dilation balloons and an anchor balloon.
- . The number of lumens and component materials are different between the subject and predicate device.
- . The subject device does not contain a stylet while the predicate device does.
These differences in technological characteristics do not raise different questions of safety and effectiveness as compared to the predicate device. Nonclinical performance data were used to address the differences related to design and materials to demonstrate substantial equivalence to the predicate device.
- VII. Performance Data
To support the modifications to the subject device, the following design verification and validation activities were performed:
# Biocompatibility Testing
Biocompatibility tests were conducted on the Aqueduct 100 Plus Cervical Dilation Balloon Catheter according to the 2020 FDA guidance document Use of International Standard ISO 10993-1, "Biological Evaluation of Medical Devices – Part 1: Evaluation and testing within a risk management process" as follows:
- Cytotoxicity (ISO 10993-5:2009)
- Sensitization (ISO 10993-10:2010) ●
- Irritation (ISO 10993-10:2010)
The results of this testing demonstrated that the subject device is noncytotoxic, non-irritating, and non-sensitizing.
# Sterilization Validation
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The subject device utilizes the same sterilization process as the predicate device and uses the same sterilization chamber and cycle. The ethylene oxide sterilization cycle was validated using the overkill method, in accordance with ANSI/AAMI/ISO 11135:2014 Sterilization of health care products - Ethylene oxide - Requirements for development, validation and routine control of a sterilization process for medical devices. Ethylene oxide residuals were evaluated according to ISO 10993-7:2008 Biological evaluation of medical devices - Part 7: Ethylene oxide sterilization residuals.
## Bench Performance Testing
Performance tests were performed on the Aqueduct 100 Plus Cervical Dilation Balloon Catheter according to the requirements of ISO 10555-1:2013 and ISO 10555-4:2013 Intravascular catheters — Sterile and single-use catheters — Part 1: General requirements and Part 4: Balloon dilation catheters, and ISO 11737-1:2018 Sterilization of health care products — Microbiological methods Part 1: Determination of a population of microorganisms on products.
Performance testing was also conducted on the Aqueduct 100 Plus Cervical Dilation Balloon Catheter following an accelerated aging study to simulate a 15 month shelf life, including:
- . Dimensional Verification
- Balloon Burst Pressure ●
- Balloon Fatigue ●
- Balloon Inflation/Deflation Time ●
- Catheter Bond Strength ●
- Catheter Pushability
#### VIII. Conclusion
The Aqueduct 100 Plus Cervical Dilation Balloon Catheter has the same intended use as the predicate device. The subject device has different technological characteristics than the predicate device, but these differences do not raise different questions of safety and effectiveness. Finally, the submitted performance testing demonstrates that the subject device is as safe and effective as the predicate device. Therefore, the Aqueduct 100 Plus Cervical Dilation Balloon Catheter is substantially equivalent to the cleared predicate device.
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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.
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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).
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.