The UD-1000 A/B Scanner is indicated for: Ultrasound imaging of the eye and orbit. Producing axial measurements of the eye. Imaging the intraocular anatomy and pathology of the eye. Imaging the anterior segment of the eye. Imaging the anterior angle for Glaucoma Management. Imaging of other structures of the anterior chamber.
Device Story
UD-1000 A/B Scanner is an ophthalmic diagnostic instrument performing A-mode and B-mode ultrasound. B-mode uses a 10 MHz probe with six concentric annular oscillators to acquire cross-sectional images of ocular structures; brightness corresponds to echo intensity. A-mode uses a 10 MHz non-focused probe for one-dimensional echo display to identify ocular abnormalities and measure axial length. Device operated by clinicians in clinical settings via touch panel, rotary encoder, and foot switch. Output provides visual images and distance measurements for clinical decision-making regarding ocular pathology and glaucoma management. Benefits include diagnostic visualization for patients with dense cataracts, retinal detachment, posterior staphyloma, or inability to maintain steady gaze.
Clinical Evidence
Bench testing only. No clinical data provided. Substantial equivalence is based on comparison of specifications and indications for use to legally marketed predicate devices.
Technological Characteristics
Ophthalmic ultrasound imaging system; 10 MHz A-scan and B-scan transducers; B-scan utilizes six concentric annular oscillators for beam focusing; A-mode uses non-focused beam. User interface includes touch panel, membrane switch, rotary encoder, and foot switch. Connectivity/software details not specified. Regulatory class II, product code IYO.
Indications for Use
Indicated for ophthalmic ultrasound imaging and axial measurements in patients requiring evaluation of ocular anatomy, pathology, anterior segment, anterior angle (glaucoma management), and other anterior chamber structures.
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.
Humphrey Instruments, Inc. Ophthalmic A/B Scan System Model 835 (K923348/A)
Paradigm Medical Industries, Inc. UBM Plus Model P45 (K003141)
Submission Summary (Full Text)
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K020151
Page 1 of 2
#### 510(K) SUMMARY UD-1000 A/B Scanner
This 510(K) summary of safety and effectiveness for the UD-1000 A/B Scanner is submitted in accordance Title JTQ(K) Suffinial For Sales) and Clows Office of Device Evaluation guidance concerning the organization and content of a 510(K) summary.
| Applicant: | Tomey Corporation USA |
|------------|-----------------------|
|------------|-----------------------|
300 Second Avenue Address: Waltham, MA 02451
Contact Person: Rick Mahoney Director of Business Development
781-890-1515 Telephone: 781-290-5885 (fax)
Preparation Date: January, 2002 (of the Summary)
Device Name: UD-1000 A/B Scanner
Common Name: Biometer
| Classification | System, Imaging, Pulsed Echo, Ultrasonic |
|----------------|-------------------------------------------------------|
| Name: | (see: 21 CFR 892.1560). Product Code: IYO. Panel: 90. |
Legally marketed
predicate
devices:
Biophysic Medical Ophthascan B (K844686), Nidek US-3000 (K882162), Humphrey Instruments, Inc. Ophthalmic A/B Scan System Model 835 (K923348/A), and Paradigm Medical Industries, Inc. UBM Plus Model P45 (K003141).
Description of the Device:
This instrument is designed as an ophthalmic diagnostic instrument that performs both Amode and B-mode ultrasound. In B-mode, the instrument acquires an ultrasonic crosssectional image of echoes from ocular structures. The brightness of the various dots in the two-dimensional image depends on the intensity of the echo sources. In A-mode, the instrument provides a one-dimensional display of returning echoes. Positive waves indicate the location of ocular structures; the distances between spikes can be measured.
The B-scan probe transmits focused ultrasonic waves into the eyeball. The transducer oscillates back and forth, resulting in a two-dimensional cross-sectional image view of the ocular structures. The image represents a "slice" through the portion of eye that is being examined. The ultrasonic beam focus range is controlled by six annular oscillators that are arranged concentrically. Multiple images can be saved and played back at the most appropriate resolution.
The B-scan probe is used to indirectly measure axial length based on a linear sampling of the image of the eye. Although this measurement is less accurate than axial length measurement by A-scan biometry, it provides a useful approximation in patients unable to maintain a steady primary gaze or in eyes with dense cataract, detached retina or posterior staphyloma.
{1}------------------------------------------------
KO20151
Page 2 of 2
The A-scan probe emits a non-focused ultrasound beam that results in a one-dimensional representation of echoes returned from ocular structures through which the beam passes. Ocular abnormalitites may be identified and evaluated by assessing the location and amplitude of the spikes produced by various ocular tissues.
The instrument control panel is a touch panel with membrane switch, rotary encoder and foot switch.
#### Indications for Use:
The UD-1000 A/B Scanner is indicated for:
- Ultrasound imaging of the eye and orbit ●
- Producing axial measurements of the eye .
- Imaging the intraocular anatomy and pathology of the eye .
- Imaging the anterior segment of the eye .
- Imaging the anterior angle for Glaucoma Management .
- Imaging of other structures of the anterior chamber .
| Comparison to<br>Claimed<br>Predicates: | The specifications of the UD-1000 A/B Scanner are the same or very similar to those of<br>the claimed predicates. |
|-----------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Performance<br>Data: | None. The specifications and indications for use of the UD-1000 A/B Scanner<br>are the same or very similar to those of the claimed predicate devices. The UD-1000 has<br>the same indications for use for which the claimed predicates have been cleared and has<br>no additional indications for use. |
| | Because of this, performance data were not required. |
| Conclusion: | Based on the foregoing, Tomey believes that the UD-1000 A/B Scanner is substantially<br>equivalent to legally marketed predicate devices. |
{2}------------------------------------------------
# DEPARTMENT OF HEALTH & HUMAN SERVICES
ood and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Tomey Corporation USA % Ms. Maureen O'Connell Regulatory Consultant 5 Timber Lane NORTH READING MA 01864
Re: K020151
Trade Name: UD-1000 Ultrasonic A/B Scanner Ophthalmic Biometer Regulation Number: 21 CFR 892.1560 Regulation Name: Ultrasonic pulsed echo imaging system Regulatory Class: II Product Code: 90 IYO Dated: January 11, 2002 Received: January 16, 2002
Dear Ms. O'Connell:
We have reviewed your Section 510(k) premarket 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.
This determination of substantial equivalence applies to the following transducers intended for use with the UD-1000 Ultrasonic A/B Scanner Ophthalmic Biometer, as described in your premarket notification:
#### Transducer Model Number
## B-Scan 10 MHz A-Scan 10 MHz
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), 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 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
{3}------------------------------------------------
### Page 2 - Ms. O'Connell
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
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. It 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, 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 Part 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or at (301) 443-6597 or at its Internet address "http://www.fda.gov/cdrh/dsmamain.html".
{4}------------------------------------------------
Page 3 - Ms. O'Connell
If you have any questions regarding the content of this letter, please contact Joseph Arnaudo at (301) 594-1212.
Sincerely yours,
David C. Seymour
for Nancy C. Brogdon
Director, Division of Reproductive, Abdominal and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure(s)
{5}------------------------------------------------
Image /page/5/Picture/0 description: The image shows a handwritten word that appears to be "system". The letters are written in a cursive style, with some connections between the letters. The writing is in black ink on a white background. The word is slightly tilted.
## Diagnostic Ultrasound Indications for Use Form
System:UD-1000
Transducer:
Intended Use: Diagnostic ultrasound imaging or fluid flow analysis of the human body as follows:
| Clinical<br>Application | Mode of Operation | | | | | | | | | |
|----------------------------------|-------------------|---|---|-----|-----|------------------|----------------------|------------------------------|----------|--------------------|
| | A | B | M | PWD | CWD | Color<br>Doppler | Amplitude<br>Doppler | Color<br>Velocity<br>Imaging | Combined | Other<br>(specify) |
| Ophthalmic | N | N | | | | | | | | |
| Fetal | | | | | | | | | | |
| Abdominal | | | | | | | | | | |
| Intraoperative | | | | | | | | | | |
| Intraoperative | | | | | | | | | | |
| Neurological | | | | | | | | | | |
| Pediatric | | | | | | | | | | |
| Small Organ | | | | | | | | | | |
| Neonatal | | | | | | | | | | |
| Cephalic | | | | | | | | | | |
| Adult Cephalic | | | | | | | | | | |
| Cardiac | | | | | | | | | | |
| Transesophageal | | | | | | | | | | |
| Transrectal | | | | | | | | | | |
| Transvaginal | | | | | | | | | | |
| Transurethral | | | | | | | | | | |
| Intravascular | | | | | | | | | | |
| Peripheral<br>Vascular | | | | | | | | | | |
| Laparoscopic | | | | | | | | | | |
| Musculo-skeletal<br>Conventional | | | | | | | | | | |
| Musculo-skeletal<br>Superficial | | | | | | | | | | |
| Other (specify) | | | | | | | | | | |
N=new indication; P=previously cleared by FDA; E=added under Appendix E
Additional Comments:
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use (Per 21 CFR 801.109)
Daniel R. Aydenm
Reproductive, Abdominal, cical Devices 510
{6}------------------------------------------------
## Diagnostic Ultrasound Indications for Use Form
System:
Transducer: B-Scan 10 MHz
Intended Use: Diagnostic ultrasound imaging or fluid flow analysis of the human body as follows
| Clinical | Mode of Operation | | | | | | | | Other<br>(specify) |
|----------------------------------|-------------------|---|---|-----|-----|------------------|----------------------|------------------------------|--------------------|
| Application | A | B | M | PWD | CWD | Color<br>Doppler | Amplitude<br>Doppler | Color<br>Velocity<br>Imaging | |
| Ophthalmic | | N | | | | | | | |
| Fetal | | | | | | | | | |
| Abdominal | | | | | | | | | |
| Intraoperative | | | | | | | | | |
| Intraoperative | | | | | | | | | |
| Neurological | | | | | | | | | |
| Pediatric | | | | | | | | | |
| Small Organ | | | | | | | | | |
| Neonatal | | | | | | | | | |
| Cephalic | | | | | | | | | |
| Adult Cephalic | | | | | | | | | |
| Cardiac | | | | | | | | | |
| Transesophageal | | | | | | | | | |
| Transrectal | | | | | | | | | |
| Transvaginal | | | | | | | | | |
| Transurethral | | | | | | | | | |
| Intravascular | | | | | | | | | |
| Peripheral | | | | | | | | | |
| Vascular | | | | | | | | | |
| Laparoscopic | | | | | | | | | |
| Musculo-skeletal<br>Conventional | | | | | | | | | |
| Musculo-skeletal<br>Superficial | | | | | | | | | |
| Other (specify) | | | | | | | | | |
Other (Specify)
N=new indication; P=previously cleared by FDA; E=added under Appendix E
Additional Comments:_
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
| Prescription Use (Per 21 CFR 801.109) |
|---------------------------------------|
|---------------------------------------|
(Division Sign-Off) ion of Reproductive, Abdominal, and Radiological Device 510(k) Number
{7}------------------------------------------------
#### Diagnostic Ultrasound Indications for Use Form
System:
Transducer: A-Scan 10 MHz
Intended Use: Diagnostic ultrasound imaging or fluid flow analysis of the human body as follows:
| Clinical<br>Application | Mode of Operation | | | | | | | | | |
|----------------------------------|-------------------|---|---|-----|-----|------------------|----------------------|------------------------------|----------|--------------------|
| | A | B | M | PWD | CWD | Color<br>Doppler | Amplitude<br>Doppler | Color<br>Velocity<br>Imaging | Combined | Other<br>(specify) |
| Ophthalmic | N | | | | | | | | | |
| Fetal | | | | | | | | | | |
| Abdominal | | | | | | | | | | |
| Intraoperative | | | | | | | | | | |
| Intraoperative | | | | | | | | | | |
| Neurological | | | | | | | | | | |
| Pediatric | | | | | | | | | | |
| Small Organ | | | | | | | | | | |
| Neonatal | | | | | | | | | | |
| Cephalic | | | | | | | | | | |
| Adult Cephalic | | | | | | | | | | |
| Cardiac | | | | | | | | | | |
| Transesophageal | | | | | | | | | | |
| Transrectal | | | | | | | | | | |
| Transvaginal | | | | | | | | | | |
| Transurethral | | | | | | | | | | |
| Intravascular | | | | | | | | | | |
| Peripheral<br>Vascular | | | | | | | | | | |
| Laparoscopic | | | | | | | | | | |
| Musculo-skeletal<br>Conventional | | | | | | | | | | |
| Musculo-skeletal<br>Superficial | | | | | | | | | | |
| Other (specify) | | | | | | | | | | |
N=new indication; P=previously cleared by FDA; E=added under Appendix E
Additional Comments:_
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use (Per)21 CFR 801.109)
David A. Lyon
(Division Sign-Off) Division of Reproductive, Abdominal and Radiological Devices 510(k) Number
00011
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Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.