Fetal Assessment CAP@ 1.1 is intended to retrieve, analyze and store digital ultrasound images for computerized 3-dimensional image processing. Fetal Assessment CAP can import digital 2D or 3D image file formats for 3D display. The software can be used with ultrasound systems previously cleared for Bmode imaging in obstetrics, gynecology, small organ, abdominal, endocavity, neuriological, and intraoperative uses.
Device Story
Fetal Assessment CAP 1.1 is a software module for Windows NT 4.0 systems; imports digital 2D or 3D ultrasound B-mode images from TomTec acquisition stations or compatible ultrasound systems. Device performs 3D reconstruction and surface rendering of imported data; provides qualitative 3D visualization without measurement functionality. Used in clinical settings by healthcare professionals to assist in diagnostic imaging; output displayed as 3D structures to aid clinical assessment. Benefits include enhanced visualization of anatomical structures for diagnostic review.
Clinical Evidence
Bench testing only. Software validation performed at module and system levels according to internal protocols. Results confirmed device performance conforms to design intent and system specifications.
Technological Characteristics
Software-based 3D image processing module; runs on Microsoft Windows NT 4.0. Inputs: digital 2D/3D ultrasound B-mode image files. Processing: 3D reconstruction and surface rendering. Connectivity: imports data from ultrasound systems. No measurement functionality. Qualitative visualization only.
Indications for Use
Indicated for use with previously cleared B-mode ultrasound systems for 3D image processing in obstetrics, gynecology, small organ, abdominal, endocavity, neurological, and intraoperative clinical applications.
Regulatory Classification
Identification
An ultrasonic pulsed echo imaging system is a device intended to project a pulsed sound beam into body tissue to determine the depth or location of the tissue interfaces and to measure the duration of an acoustic pulse from the transmitter to the tissue interface and back to the receiver. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
Special Controls
*Classification.* Class II (special controls). A biopsy needle guide kit intended for use with an ultrasonic pulsed echo imaging system only is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.
{0}------------------------------------------------
OCT 1 8 1999
Image /page/0/Picture/3 description: The image shows the logo for TOMTEC IMAGING SYSTEMS. The logo is in black and white, with the word "TOMTEC" in large, bold letters. Below the word "TOMTEC" is the phrase "IMAGING SYSTEMS" in smaller letters. The logo is simple and modern, and it is likely used to represent a company that specializes in imaging technology.
K 992580 81072
July 23, 1999
# 510(k) Summary Fetal Assessment CAP
# Name and Address
Acuson Corporation 1220 Charleston Road Mountain View, CA 94043
## Contact Person
William E. Welch Manager, Regulatory Affairs Phone (650) 969-9112 FAX (650) 962-8018
## Common, Classification & Proprietary Names
| Common Name: | Digital Ultrasound Image Analysis System |
|----------------------|----------------------------------------------|
| Classification Name: | Ultrasonic Pulsed Echo Imaging System |
| Proprietary Name: | Fetal assessment CAP or 3D Surface Rendering |
## Predicate Device
TomTec Echo-View K934139
## Device Description
The Fetal Assessment CAP® 1.1 is a software module for high performance computer systems based on Microsoft Windows NT™ 4.0 operating system standards. Fetal Assessment CAP® 1.1 is proprietary software for the analysis, storage, retrieval and reconstruction of ultrasound B-mode images.
The data can be acquired by a TomTec acquisition station or B-mode (2D) acquisition capable Ultrasound systems. With the Fetal Assessment CAP a 3 dimensional display can be reconstructed.
{1}------------------------------------------------
Image /page/1/Picture/2 description: The image shows the logo for TOMTEC Imaging Systems. The logo is in black and white, with the word "TOMTEC" in large, bold letters. Below the word "TOMTEC" are the words "IMAGING SYSTEMS" in smaller letters. The logo is simple and modern, and it is likely used to represent the company's brand.
#### Intended Use
Fetal Assessment CAP@ 1.1 is intended to retrieve, analyze and store digital ultrasound images for computerized 3-dimensional image processing.
Fetal Assessment CAP can import digital 2D or 3D image file formats for 3D display.
The software can be used with ultrasound systems previously cleared for Bmode imaging in obstetrics, gynecology, small organ, abdominal, endocavity, neuriological, and intraoperative uses. I
## Technological Characteristics Comparison
The Fetal assessment Cap is mainly a clinical application oriented set of the Echo-View system. The Acquisition methods are comparable to the EchoScan Acquisition methods. While the EchoView system provides diverse measurement functions, the Fetal Assessment CAP is a simple to use, qualitative 3D ultrasound tool, which provides 3D structures without any measurement functionality.
#### Test Discussion
Testing was performed according to internal company procedures. Software testing and validation were done at the module and system level according to written test protocols established before testing was conducted. Test results were reviewed by designated technical professionals before software proceeded to release.
#### Test Conclusions
Test results support the conclusion that actual device performance satisfics the design intent. Actual device performance as tested internally conforms to the system performance specifications.
July 23, 1999 William E. Welch
{2}------------------------------------------------
Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo features a stylized eagle with three lines representing its wings. The eagle is encircled by the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA".
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
OCT 1 8 1999
William E. Welch Manager, Requlatory Affairs Acuson Corporation 1220 Charleston Road P.O. Box 7393 Mountain View, CA 94039-7393 Re: K992580
3D Surface Rendering and Fetal Assessment CAP (Clinical Application Package) Dated: July 27, 1999 Received: August 2, 1999 Requiatory Class: Il 21 CFR 892.1560/Procode: 90 IYO
Dear Mr. Welch:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we 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). 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.
If your device is classified (see above) into either class III (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any oblication you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in yitro diagnostic devices), please contact the Office of Compliance at (301) 594-4613. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification"(21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597, or at its internet address "http://www.fda.gov/cdrh/dsma/dsmamain.html".
Sincerely yours,
CAPT Daniel G. Schultz, M.D. Acting Director, Division of Reproductive, Abdominal, Ear, Nose and Throat, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{3}------------------------------------------------
# K 992580
# Diagnostic Ultrasound Indications for Use Form
#### Ultrasound System: See Comments Below
#### Transducer: See Comments Below
| Clinical<br>Applications | A | B | M | PWD | CWD | Color<br>Doppler | Power<br>(Ampl.)<br>Doppler | Color<br>Velocity<br>Imaging | Combined<br>(Specify) | Other<br>(Specify) | |
|---------------------------------------|---|---|---|-----|-----|-------------------------------------------------------------|-----------------------------|------------------------------|-----------------------|--------------------|--|
| Ophthalmic | | | | | | | | | | | |
| Fetal | | P | | | | | | | | | |
| Abdominal | | P | | | | | | | | | |
| Intra-operative<br>(Specify) | | P | | | | | | | | | |
| Intra-operative<br>Neurological | | P | | | | | | | | | |
| Pediatric | | P | | | | | | | | | |
| Small Organ<br>- Thyroid | | P | | | | | | | | | |
| - Breast<br>- Testicle | | P | | | | | | | | | |
| Neonatal<br>Cephalic | | | | | | | | | | | |
| Adult Cephalic | | | | | | | | | | | |
| Cardiac | | | | | | | | | | | |
| Trans-esophageal | | | | | | | | | | | |
| Trans-Rectal | | P | | | | | | | | | |
| Trans-Vaginal | | P | | | | | | | | | |
| Trans-Urethral | | | | | | | | | | | |
| Intra-Luminal | | | | | | | | | | | |
| Peripheral<br>Vascular | | | | | | | | | | | |
| Laparoscopic | | | | | | | | | | | |
| Musculo-Skeletal<br>Conventional | | | | | | | | | | | |
| Musculo-Skeletal<br>Superficial | | | | | | | | | | | |
| Other (Specify)<br>N = New Indication | | | | | | P = Previously cleared by FDA<br>E = Added under Appendix E | | | | | |
Additional Comments:_3D_Surface_Rendering_software can be used with any previously cleared ultrasound system and transducers capable of B-mode imaging and cleared for the above indications for use.
PI FASE DO NOT WRITE REI OW THIS I INF CONTINITIE ON ANOTHER PAGE
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use *Yes*
David A. Seymore
(Division Sign-Off)
Division of Reproductive, Abdominal, ENT, and Radiological Dey 510(k) Number
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.