The TERATECH Model 2000 is intended for abdominal, pelvic, cardiac, peripheral vascular, neurovascular, and fetal imaging. Diagnostic ultrasound imaging or fluid flow analysis of the human body as follows: [Table indicates B-Mode operation for Fetal, Abdominal, Pediatric, Neonatal Cephalic, Adult Cephalic, Cardiac, and Peripheral Vascular applications]. Intended for use in military field settings in addition to hospital/clinic settings.
Device Story
Portable ultrasound imaging system; consists of laptop computer and 3 MHz linear array ultrasonic probe. Inputs: ultrasonic echoes from patient tissue. Processing: B-Mode (grayscale) imaging; image processing includes gamma correction, dynamic range adjustment, and speckle noise reduction. Outputs: 2D grayscale images displayed on 14.1" LCD; S-VHS/VGA video output. Used in hospitals, clinics, and military field settings by trained clinicians. Output allows visualization of internal structures for diagnostic assessment; aids clinical decision-making by providing real-time anatomical imaging in portable environments.
Clinical Evidence
No clinical data provided. Bench testing only.
Technological Characteristics
Portable laptop-based ultrasound system; 3 MHz linear array transducer. Frequencies: 2-4 MHz. Frame rate: 15-30 fps. 128 lines per frame. 256 gray shades. Power: 115 VAC, <20 W consumption. Dimensions: 12.2" x 10" x 2". Weight: 12 lb. Connectivity: S-VHS and VGA output.
Indications for Use
Indicated for diagnostic ultrasound imaging (B-Mode) in fetal, abdominal, pediatric, neonatal cephalic, adult cephalic, cardiac, and peripheral vascular applications. Intended for use in hospital, clinic, and military field settings.
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.
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K992505
# 510(k) Summary for TERATECH Model 2000 Imaging System
#### 1. SPONSOR
Teratech Corporation 223 Middlesex Turnpike Burlington, MA 01803
| Contact Person: | Alice Chiang, President |
|-----------------|-------------------------|
| Telephone: | 781-270-4143 |
July 26, 1999 Date Prepared:
#### 2. DEVICE NAME
| Proprietary Name: | TERATECH Model 2000 Imaging System |
|----------------------|-----------------------------------------------------------------|
| Common/Usual Name: | Diagnostic Ultrasound Imaging System |
| Classification Name: | Ultrasonic Pulsed Echo Imaging System (21 CFR 892.1560, 90-IYO) |
| | Diagnostic Ultrasound Transducer (21 CFR 892.1570, 90-ITX) |
#### 3. PREDICATE DEVICES
ATL High-Definition Imaging UltraMark-9 (K903603) B&K 3535 (K914945) Tetrad 2300 E/U (K946277)
#### 4. INTENDED USE
The TERATECH Model 2000 is intended for abdominal, pelvic, cardiac, peripheral vascular, neurovascular, and fetal imaging.
#### ട്. DEVICE DESCRIPTION
The TERATECH Model 2000 is a portable ultrasound imaging system with grayscale or brightness (B-Mode) imaging. The Model 2000 consists of a laptop computer and a 3 MHz linear array ultrasonic probe. Technical specifications for the Model 2000 are as follows:
7/26/99
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| System frequencies: | 2-4 MHz |
|------------------------------------------|-------------------------------------------------------------|
| Frame rate: | 15-30 fps (imaging only) |
| Number of ultrasound lines<br>per frame: | 128 |
| Fields of view: | 2-27 cm |
| Mode of Operation: | 2D imaging |
| Image display: | Rectangular and trapezoidal |
| Video: | S-VHS Output, External VGA Monitor |
| LCD size: | 14.1" |
| Gray shades: | 256 |
| Image magnification: | 1X-4X, probe dependent |
| Image presentation: | black/white, left/right, up/down |
| Image processing: | gamma correction, dynamic range, speckle noise<br>reduction |
| Input power: | 115 VAC, A/C adapter rated @ 60 W |
| Power consumption: | <20 W |
| Leakage current: | 50 μA max |
| Primary breakdown voltage: | 2500 V AC min |
| Size: | Width: 12.2"<br>Height: 10"<br>Depth: 2" |
| Weight: | 12 lb (laptop and probe) |
#### 6. BASIS FOR SUBSTANTIAL EQUIVALENCE
The TERATECH Model 2000 is substantially equivalent to other diagnostic ultrasound devices currently in commercial distribution in the United States. Examples of these devices are the ATL High-Definition Imaging UltraMark-9 (K903603), the B & K 3535 (K914945), and the Tetrad 2300 E/U (K946277). The Model 2000 has the same intended uses as each of these predicates and offers similar operating features. The main differences between the Model 2000 and the predicate devices are the compact size and low power consumption of the Model 2000.
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Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" around the perimeter. Inside the circle is a stylized image of three human profiles facing right, with flowing lines representing hair or movement.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
NOV 1 0 1898
Teratech Corporation Sheila Hemeon-Heyer Senior Staff Consultant c/o Medical Device Consultants, Inc. 49 North Plain Street North Attleboro, MA 02740
K992505 Re: Teratech Model 2000 Imaging System Dated: September 29, 1999 Received: September 30, 1999 Requlatory Class: II 21 CFR 892.1560/Procode: 90 IYO
Dear Ms. Hemeon-Heyer:
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 to 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. You may, therefore, market the device, subject to the general controls provisions Act (Act). The general controls provisions of the Act include requirements for registration, listing of devices, qood manufacturing practices, labeling, and prohibitions against misbranding and adulteration.
This determination of substantial equivalence applies to the following transducers intended for use with the Teratech Model 2000 Imaging System, as described in your premarket notification:
### Transducer Model Number
L3 (3 MHz Linear Array)
If your device is classified (see above) into either class II (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 Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (QS) for Medical Devices: General (GMP) regulation (21 CFR Part 820) and that, through periodic QS inspections, the FDA will verify such Failure to comply with the GMP regulation may result in assumptions. In addition, the Food and Drug Administration (FDA) may regulatory action. publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification does not affect any obligation you may have under sections 531 and 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
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## Page 2 - Sheila Hemeon-Heyer
This determination of substantial equivalence is granted on the condition that prior to shipping the first device, you submit a postclearance special report. This report should contain complete information, including acoustic output measurements based on production line devices, requested in Appendix G,
(enclosed) of the Center's September 30, 1997 "Information for Manufacturers Seeking Marketing Clearance of Diagnostic Ultrasound Systems and Transducers." If the special report is incomplete or contains unacceptable values (e.g., acoustic output greater than approved levels), then the 510(k) clearance may not apply to the production units which as a result may be considered adulterated or misbranded.
The special report should reference the manufacturer's 510(k) number. Tt should be clearly and prominently marked "ADD-TO-FILE" and should be submitted in duplicate to:
> Food and Drug Administration Center for Devices and Radiological Health Document Mail Center (HFZ-401) 9200 Corporate Boulevard Rockville, Maryland 20850
This letter will allow you to begin marketing your device as described in your 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 market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4591. 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 Other general information on your responsibilities under the Act may 807.97) . . be obtained from the Division of Small Manufacturers Assistance at its tollfree number (800) 638-2041 or at (301) 443-6597 or at its internat address "http://www.fda.gov/cdrh/dsmamain.html" .
If you have any questions regarding the content of this letter, please contact Rodrigo C. Perez at (301) 594-1212.
and
Sincerely yours,
APT 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
Enclosures
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# Dlagnostic Ultrasound Indications for Use Form Teratech Model 2000 Imaging System
Intended Use: Diagnostic ultrasound imaging or fluid flow analysis of the human body as follows:
| | Mode of Operation | | | | | | | | | | |
|----------------------------------|-------------------|---|---|-----|-----|------------------|----------------------|------------------------------|-----------------------|--------------------|--|
| Clinical Application | A | B | M | PWD | CWD | Color<br>Doppler | Amplitude<br>Doppler | Color<br>Velocity<br>Imaging | Combined<br>(Specify) | Other<br>(Specify) | |
| Ophthalmic | | | | | | | | | | | |
| Fetal | | N | | | | | | | | | |
| Abdominal | | N | | | | | | | | | |
| Intraoperative (Specify) | | | | | | | | | | | |
| Intraoperative<br>Neurological | | | | | | | | | | | |
| Pediatric | | N | | | | | | | | | |
| Small Organ(Specify) | | | | | | | | | | | |
| Neonatal Cephalic | | N | | | | | | | | | |
| Adult Cephalic | | N | | | | | | | | | |
| Cardiac | | N | | | | | | | | | |
| Transesophageal | | | | | | | | | | | |
| Transrectal | | | | | | | | | | | |
| Transvaginal | | | | | | | | | | | |
| Transurethral | | | | | | | | | | | |
| Intravascular | | | | | | | | | | | |
| Peripheral Vascular | | N | | | | | | | | | |
| Laparoscopic | | | | | | | | | | | |
| Musculo-skeletal<br>Conventional | | | | | | | | | | | |
| Musculo-skeletal<br>Conventional | | | | | | | | | | | |
| Musculo-skeletal<br>Superficial | | | | | | | | | | | |
| Other (Specify) | | | | | | | | | | | |
N = new Indication; P = previously cleared by FDA; E=added under Appendix E
For use with 3 MHz Model L3 Transducer. Additional Comments: Intended for use in military field settings in addition to hospital/clinic settings.
> (PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of CDRH, Office of Device Evaluation
Prescription Use (Per CFR 801.108)
..
Emil A. Severson
(Division Sign-Off) Division of Reproductive, Abdominal, ENT, and Radiological D 510(k) Number
a comments paparticipal
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. . . . . .
## Diagnostic Ultrasound Indications for Use Form 3 MHz Model L3 Transducer for Teratech Model 2000 Imaging System
Intended Use: Diagnostic ultrasound imaging or fluid flow analysis of the human body as follows:
| | Mode of Operation | | | | | | | | | |
|----------------------------------|-------------------|---|---|-----|-----|------------------|----------------------|------------------------------|-----------------------|--------------------|
| Clinical Application | A | B | M | PWD | CWD | Color<br>Doppler | Amplitude<br>Doppler | Color<br>Velocity<br>Imaging | Combined<br>(Specify) | Other<br>(Specify) |
| Ophthalmic | | | | | | | | | | |
| Fetal | | N | | | | | | | | |
| Abdominal | | N | | | | | | | | |
| Intraoperative (Specify) | | | | | | | | | | |
| Intraoperative<br>Neurological | | | | | | | | | | |
| Pediatric | | N | | | | | | | | |
| Small Organ(Specify) | | | | | | | | | | |
| Neonatal Cephalic | | N | | | | | | | | |
| Adult Cephalic | | N | | | | | | | | |
| Cardiac | | N | | | | | | | | |
| Transesophageal | | | | | | | | | | |
| Transrectal | | | | | | | | | | |
| Transvaginal | | | | | | | | | | |
| Transurethral | | | | | | | | | | |
| Intravascular | | | | | | | | | | |
| Peripheral Vascular | | N | | | | | | | | |
| Laparoscopic | | | | | | | | | | |
| Musculo-skeletal<br>Conventional | | | | | | | | | | |
| Musculo-skeletal<br>Superficial | | | | | | | | | | |
| Other (Specify) | | | | | | | | | | |
N = now indication; P = previously cleared by FDA; E=added under Appendix E
Intended for use in military field settings in addition to hospital/clinic Additional Comments: settings.
> (PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PADE IF NEEDED) Concurrence of CDRH, Office of Device Evaluation
Prescription Use (Per CFR 801.108)
David A. Kyman
(Division Sign-Off)
Division of Reproductive, Abdominal, ENT, and Radiological Devices 510(k) Number
: 上
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.