The E-Z scan AB 5500+ ultrasound system is a multi-purpose computer-based ultrasonic diagnostic system ophthalmic applications, intended to both visualize the interior of the eye by means of ultrasound and to mak measurements inside the eye, including the measurement of axial length for determination of IOL power.
Device Story
The E-Z Scan AB5500+ is a portable, computer-controlled ophthalmic ultrasound system. It utilizes two separate 10 MHz transducers: a motor-driven transducer with an angle encoder for B-scan imaging of the eye and orbit, and a contact transducer for A-scan biometry. The system is operated by clinicians in a clinical setting. Inputs consist of ultrasonic echoes from ocular structures; these are processed by an internal microprocessor to generate visual images and biometric measurements displayed on a video touch screen. The touch screen serves as the primary interface for system control. By providing real-time visualization and precise axial length measurements, the device assists physicians in diagnosing ophthalmic disorders and calculating IOL power for surgical planning, ultimately supporting improved patient outcomes in cataract and ocular surgery.
Clinical Evidence
No clinical data required. Substantial equivalence is supported by non-clinical bench testing, including ultrasonic emissions tests and accuracy/validation tests.
Technological Characteristics
Portable ophthalmic ultrasound system; 10 MHz transducers (A-mode and B-mode); motor-driven B-scan transducer with angle encoder; internal microprocessor control; video touch screen interface; standalone device; non-ionizing ultrasonic energy.
Indications for Use
Indicated for ophthalmic applications including visualization of the eye and orbit, localization of ophthalmic disorders, and measurement of ocular distances (including axial length for IOL power determination).
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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APR 1 3 2004
Sonomed Inc. Special 510(k) E-Z Scan AB5500*
510(k) Summary February 25, 2004
(1) Submitter Information
Name: Sonomed Inc..
Address: 3000 Marcus Avenue Lake Success, NY 11042
Telephone Number: 516-354-0900
Contact Person: Dr. George Myers Medsys Inc. 377 Rt. 17 S Hasbrouck Heights, NJ 07604 201-727-1703
Date Prepared: February 25, 2004
(2) Name of Device;
Trade Name: Sonome F-Z Scan AB5500+ Common Name: Portable ophthalmic A and B scan system Classification Name: System, Imaging, Ultrasonic, Ophthalmic, 9801YO
(3) Equivalent legally-marketed devices:
1. Sonomed Ophthalmic B-scan B-3000. K844031
- 2. Sonomed A-scan A-2000, K843696
(4) Description
The E-Z Scan AB5500* combines a contact B-scanner used for the visualization by ultrasound of the eye and orbit and an A-scan used for intraocular measurements. The intended use of this system includes the localization and visualization of ophthalmic disorders and measurement of the eye and orbit.
(5) Intended Use
. The intended use of this system includes the localization and visualization of ophthalmic disorders and measurement of ocular distances.
(6) Technological characteristics
K040668
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Koy 0668
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The E-Z Scan AB5500+ is a conventional ophthalmic B-scan system using a motordriven transducer and angle sensor for scanning and a conventional contact A-scan system. The transducer frequency is 10 MHz. It uses a motor-driven 10 MHz transducer with an attached angle encoder. The display is on a video touch screen, also used for controlling the system. The entire device is computer-controlled by an internal microprocessor. The A-scan uses a separate 10 MIIz transducer and its own pulserreceiver.
(b) Performance data
(1) Non-clinical tests
Both ultrasonic emissions tests and accuracy and validation tests have been done.
(2) Clinical tests
Not required
- (3) Conclusions
The Sonomed E-Z scan AB5500+ is equivalent in safety and efficacy to the legally marketed predicate device.
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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 words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is a stylized symbol of an eagle with three wavy lines representing the agency's mission to protect the health of all Americans and provide essential human services.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
APR 1 3 2004
Mr. Barry Durante Executive Vice President SONOMED, Inc. 3000 Marcus Avenue LAKE SUCCESS NY 11042
Re: K040668
Trade Name: Sonomed E-Z Scan AB 5500+ Regulation Number: 21 CFR 892.1560 Regulation Name: Ultrasonic pulsed echo imaging system Regulation Number: 21 CFR 892.1570 Regulation Name: Diagnostic ultrasonic transducer Regulatory Class: Class II Product Code: 90 IYO and ITX Dated: March 1, 2004 Received: March 17, 2004
Dear Mr. Durante:
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 Sonomed E-Z Scan AB 5500+, as described in your premarket notification:
Transducer Model Number
## A-Mode, 10 MHz B-Mode, 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
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can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's 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".
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If you have any questions regarding the content of this letter, please contact Rodrigo C. Perez at (301) 594-1212.
Sincerely yours,
Daniel Webster Lyman
ar Nancy C. Brogdon Director, Division of Reproductive, Abdominal and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Sonomod E-7. Scan
Page 9 Diagnostic Ultrasound Indications for Use Form
Page 1 of 1
510(k) Number (if known): K040668
Device Name: E-Z Scan AB 5500+
### Intended Use:
The E-Z scan AB 5500+ ultrasound system is a multi-purpose computer-based ultrasonic diagnostic system ophthalmic applications, intended to both visualize the interior of the eye by means of ultrasound and to mak measurements inside the eye, including the measurement of axial length for determination of IOL power. Mode of Operation
| CLINICAL<br>APPLICATION | A | B | M | PWD | CWD | COLOR<br>DOPPLER | POWER<br>(AMPLITUDE)<br>DOPPLER | COLOR<br>VELOCITY<br>IMAGING | COMBINED<br>(SPECIFY) | OTHER<br>(SPECIFY) |
|------------------------------|---|---|---|-----|-----|------------------|---------------------------------|------------------------------|-----------------------|--------------------|
| Ophthalmic | P | P | | | | | | | | |
| Fetal | | | | | | | | | | |
| Abdominal | | | | | | | | | | |
| Intra-operative<br>(specify) | | | | | | | | | | |
| Intra-operative | | | | | | | | | | |
| Neurological | | | | | | | | | | |
| Pediatric | | | | | | | | | | |
| Small Organ<br>(Specify) | | | | | | | | | | |
| Neonatal Cephalic | | | | | | | | | | |
| Adult Cephalic | | | | | | | | | | |
| Cardiac | | | | | | | | | | |
| Trans-esophageal | | | | | | | | | | |
| Trans-rectal | | | | | | | | | | |
| Trans-vaginal | | | | | | | | | | |
| Trans-urethral | | | | | | | | | | |
| Intra-luminal | | | | | | | | | | |
| Peripheral | | | | | | | | | | |
| Vascular | | | | | | | | | | |
| Laparoscopic | | | | | | | | | | |
| Musculo-Skeletal | | | | | | | | | | |
| 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 CDRII, Office of Device Evaluation (ODE)
| Prescription Use (Per 21 CFR 810.109) | |
|---------------------------------------|--|
|---------------------------------------|--|
OR
| Over-the-Counter Use | |
|----------------------|--------------------------|
| | (Optional Format 1-2-96) |
(Division Sign-Off)
Division of Reproductive, Abdominal, and Radiological Devices
| 510(k) Number | K040608 |
|---------------|---------|
|---------------|---------|
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## Diagnostic Ultrasound Indications for Use Form
Page _________________________________________________________________________________________________________________________________________________________________________ 510(k) Number (if known):
Device Name: A-Mode Probe E-Z Scan AB 5500+
### Intended Use:
The Intended Use of the A_Mode probe for the E-Z scan AB 5500+ ultrasound system is to make measurements inside the eye, including the measurement of axial length for determination of IOL power, and to visualize the eye by means of A-scans .
| CLINICAL<br>APPLICATION | A | B | M | PWD | CWD | COLOR<br>DOPPLER | POWER<br>(AMPLITUDE)<br>DOPPLER | COLOR<br>VELOCITY<br>IMAGING | COMBINED<br>(SPECIFY) | OTHER<br>(SPECIFY) |
|------------------------------|---|---|---|-----|-----|------------------|---------------------------------|------------------------------|-----------------------|--------------------|
| Ophthalmic | P | | | | | | | | | |
| Fetal | | | | | | | | | | |
| Abdominal | | | | | | | | | | |
| Intra-operative<br>(specify) | | | | | | | | | | |
| Intra-operative | | | | | | | | | | |
| Neurological | | | | | | | | | | |
| Pediatric | | | | | | | | | | |
| Small Organ<br>(Specify) | | | | | | | | | | |
| Neonatal Cephalic | | | | | | | | | | |
| Adult Cephalic | | | | | | | | | | |
| Cardiac | | | | | | | | | | |
| Trans-esophageal | | | | | | | | | | |
| Trans-rectal | | | | | | | | | | |
| Trans-vaginal | | | | | | | | | | |
| Trans-urethral | | | | | | | | | | |
| Intra-luminal | | | | | | | | | | |
| Peripheral | | | | | | | | | | |
| Vascular | | | | | | | | | | |
| Laparoscopic | | | | | | | | | | |
| Musculo-Skeletal | | | | | | | | | | |
| Other (Specify) | | | | | | | | | | |
Mode of Operation
N= new indication; P= previously cleared by FDA; L= added under Appendix D 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 810.109) | |
|---------------------------------------|--|
|---------------------------------------|--|
OR
| Over-the-Counter Use (Optional Format 1-2-96) | |
|-----------------------------------------------|--|
|-----------------------------------------------|--|
| (Division Sign-Off) Division of Reproductive, Abdominal, and Radiological Devices | |
|-----------------------------------------------------------------------------------|---------|
| 510(k) Number | K040668 |
nter Use
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## Diagnostic Ultrasound Indications for Use Form
Page _________________________________________________________________________________________________________________________________________________________________________ 510(k) Number (if known):
Device Name: B-Mode Probe, E-Z Scan AB 5500+
#### Intended Use:
The intended use of the B-Mode for the E-Z scan AB 5500 is to visualize the interior of the eye by means of ultrasound and to make measurements inside the eye by B-scan ultrasound.
CLINICAL PWD COLOR POWER B M CWD COLOR 人 COMBINED OTHER APPLICATION DOPPLER (AMPLITUDE) VELOCITY (SPECIFY) (SPECIFY) DOPPLER IMAGING Ophthalmic P Fetal Abdominal Intra-operative (specify) Intra-operative Neurological Pediatric Small Organ (Specify) Neonatal Cephalic Adult Cephalic Cardiac Trans-esophageal Trans-rectal Trans-vaginal Trans-urethral Intra-luminal Peripheral Vascular Laparoscopic Musculo-SkcIctal 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 810.109) | <div></div> |
|---------------------------------------|-------------|
|---------------------------------------|-------------|
OR
| Over-the-Counter Use (Optional Format 1-2-96) | <div></div> |
|-----------------------------------------------|-------------|
|-----------------------------------------------|-------------|
| (Division Sign-Off)<br>Division of Reproductive, Abdominal,<br>and Radiological Devices | <div></div> |
|-----------------------------------------------------------------------------------------|-------------|
| 510(k) Number | K640668 |
Mode of Operation
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.