The IntraSight system is used for the qualitative and quantitative evaluation of vascular morphology in the coronary arteries and vessels of the peripheral vasculature. It is also indicated as an adjunct to conventional angiographic procedures to provide an image of vessel lumen and wall structures. ChromaFlo is indicated for qualitative blood flow information from peripheral and coronary vasculature; flow information can be an adjunct to other methods of estimating blood flow and blood perfusion. The pressure feature is intended for use in all blood vessels, including coronary and peripheral arteries, to measure intravascular blood pressure during diagnostic angiography and/or interventional procedures. Rotational 45MHz feature is intended for the qualitative and quantitative evaluation of vascular morphology in the coronary arteries and vasculature. As an adjunct to conventional angiographic procedures to provide an image of the vessel lumen and wall structures. The pullback feature of the Spinvision (PIMr) withdraws the imaging core within the protective sheath for a maximum of 15 cm. The FFR Modality is indicated in all blood vessels, including coronary and peripheral arteries, to measure intravascular blood pressure during diagnostic angiography and/or interventional procedures. The iFR Modality is intended to be used in conjunction with currently marketed Volcano pressure wires. In the coronary anatomy, the iFR modality has a diagnostic cut- point of 0.89 which represents an ischemic threshold and can reliably guide revascularization decisions during diagnostic catheterization procedure. When used as for a pullback assessment, the iFR modality is intended as a visual aid in decision making by indicating the relative location and severity of the stenoses such as, multiple lesions or diffuse disease.
Device Story
IntraSight Mobile is a cart-based system for intravascular ultrasound (IVUS) imaging and pressure measurement in coronary/peripheral vasculature. System interfaces with Volcano IVUS catheters and pressure wires via Patient Interface Module (PIM). IVUS mode: transducer emits/receives high-frequency sound waves; system processes signals to generate 360° cross-sectional tomographic images. Pressure mode: acquires intraluminal pressure data from guide wires and aortic pressure from cath lab equipment. Used in cath labs by physicians/technicians. Mobile cart design includes touch screen panel PC and ruggedized secondary controller housing. Output provides visual assessment of vessel lumen/wall structures, blood flow, and pressure metrics to guide clinical decision-making during interventions.
Clinical Evidence
Bench testing only. Performance data included EMC and electrical safety testing, environmental testing, design verification, software verification and validation, packaging validation, simulated use/usability validation, and image validation. All acceptance criteria were met.
Technological Characteristics
Ultrasonic pulsed echo imaging system; 45MHz rotational imaging capability. Interfaces with IVUS catheters and pressure wires via PIM. Mobile cart form factor with touch screen panel PC and ruggedized controller housing. Software-based signal processing for image reconstruction and pressure analysis. Complies with electrical and physical safety standards.
Indications for Use
Indicated for patients undergoing diagnostic angiography or interventional procedures in coronary and peripheral vasculature. Used for qualitative/quantitative evaluation of vascular morphology, blood flow/perfusion assessment (ChromaFlo), and intravascular blood pressure measurement (FFR/iFR modalities). iFR modality indicated for coronary anatomy to guide revascularization decisions at 0.89 ischemic threshold.
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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Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: a symbol on the left and the text on the right. The symbol on the left is a stylized image of a bird or eagle, with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" surrounding it. To the right of the symbol is the text "FDA U.S. FOOD & DRUG ADMINISTRATION" in blue.
January 19, 2021
Volcano Corporation Linda Schulz Sr. Regulatory Affairs Specialist 3721 Valley Centre Dr Ste 500 San Diego, California 92130
Re: K203719
Trade/Device Name: IntraSight Mobile Regulation Number: 21 CFR 892.1560 Regulation Name: Ultrasonic Pulsed Echo Imaging System Regulatory Class: Class II Product Code: IYO, DSK, DSA Dated: December 18, 2020 Received: December 21, 2020
Dear Linda Schulz:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal
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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); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Mark Fellman Assistant Director Division of Cardiac Electrophysiology, Diagnostics and Monitoring Devices Office of Cardiovascular Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known)
## K203719
Device Name
IntraSight Mobile
#### Indications for Use (Describe)
The IntraSight System is used for the qualitative evaluation of vascular morphology in the coronary arteries and vessels of the peripheral vasculature. It is also indicated as an adjunct to conventional angiographic procedures to provide an image of vessel lumen and wall structures.
ChromaFlo® is indicated for qualitative blood flow information from peripheral and coronary vasculature; flow information can be an adjunct to other methods of estimating blood flow and blood perfusion.
The pressure feature is intended for use in all blood vessels, including coronary and peripheral arteries, to measure intravascular blood pressure during diagnostic angiography and/or interventional procedures.
Rotational 45MHz feature is intended for the qualitative and quantitative evaluation of vascular morphology in the coronary arteries and vasculature as an adjunct to conventional angiographic procedures to provide an image of the vessel lumen and the wall structures. The Pullback feature of the imaging core within the protective sheath for a maximum of 15 cm.
The FFR Modality is indicated in all blood vessels, including coronary and peripheral arteries, to measure intravascular blood pressure during diagnostic angiography and/or interventional procedures.
The iFR Modality is intended to be used in conjunction with currently marketed Volcano pressure wires. In the coronary anatomy, the iFR modality has a diagnostic cut-point of 0.89 which represents an ischemic threshold and can reliably guide revascularization decisions during diagnostic catheterization procedure. When used as for a pullback assessment, the iFR modality is intended as a visual aid in decision the relative location and severity of the stenoses such as, multiple lesions or diffuse disease.
Type of Use (Select one or both, as applicable)
| Prescription Use (Part 21 CFR 801 Subpart D) | <div> </div> |
|----------------------------------------------|--------------|
| Over-The-Counter Use (21 CFR 801 Subpart C) | <div> </div> |
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Image /page/3/Picture/1 description: The image shows the logo for Volcano Corporation. The logo consists of a gray square with a white mountain inside, followed by the word "VOLCANO" in large, blue letters. Below the word "VOLCANO" is the phrase "PRECISION GUIDED THERAPY" in smaller, black letters.
# 510(k) SUMMARY December 18, 2020
| SPONSOR: | Volcano Corporation<br>3721 Valley Centre Drive, Suite<br>500 San Diego, CA 92130 |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| CONTACT/SUBMITTER: | Linda Schulz<br>Sr. Regulatory Affairs Specialist<br>Volcano Corporation<br>3721 Valley Centre Drive, Suite<br>500 San Diego, CA 92130<br>Tel: (858) 720-4113 |
| DATE PREPARED: | December 18, 2020 |
| DEVICE: | IntraSight Mobile |
| TRADE NAME: | IntraSight Mobile |
| COMMON NAME: | System, Imaging, Pulsed Echo, Ultrasonic |
| CLASSIFICATION: | 21 CFR Part 892.1560<br>IYO: Ultrasonic Pulsed Echo Imaging System<br>21 CFR Part 870.2900<br>DSA: Patient Transducer and Electrical Cable<br>21 CFR Part 870.1110<br>DSK: 870.1110 Blood Pressure Computer |
| PREDICATE DEVICE: | IntraSight K190078 |
### DEVICE DESCRIPTION:
The IntraSight Mobile System provides qualitative and quantitative evaluation of vascular morphology in the coronary arteries and peripheral vasculature. It is also indicated as an adjunct to conventional angiographic procedures to provide an image of vessel lumen and wall structures. The IntraSight Mobile System interfaces with Volcano Intravascular Ultrasound (IVUS) Imaging Catheters and pressure wires.
When operating in the IVUS mode, the IVUS catheter uses a transducer near the distal tip to emit and receive high frequency sound waves. The system is then able to analyze the signal that is received by the transducer to differentiate between vessel structures and produce a
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Image /page/4/Picture/1 description: The image shows the logo for Volcano Corporation. The logo consists of a gray square with a white mountain inside, followed by the word "VOLCANO" in blue, block letters. Below the word "VOLCANO" is the phrase "PRECISION GUIDED THERAPY" in smaller, black letters.
360° cross-sectional, tomographic image. When operating in the pressure mode, the system acquires intraluminal data from pressure guide wire while simultaneously taking aortic pressure data from the established catheterization lab equipment. Catheters and guide wires are connected to the system via the Patient Interface Module (PIM).
## INTENDED USE:
The IntraSight system is used for the qualitative and quantitative evaluation of vascular morphology in the coronary arteries and vessels of the peripheral vasculature. It is also indicated as an adjunct to conventional angiographic procedures to provide an image of vessel lumen and wall structures.
ChromaFlo is indicated for qualitative blood flow information from peripheral and coronary vasculature; flow information can be an adjunct to other methods of estimating blood flow and blood perfusion.
The pressure feature is intended for use in all blood vessels, including coronary and peripheral arteries, to measure intravascular blood pressure during diagnostic angiography and/or interventional procedures.
Rotational 45MHz feature is intended for the qualitative and quantitative evaluation of vascular morphology in the coronary arteries and vasculature. As an adjunct to conventional angiographic procedures to provide an image of the vessel lumen and wall structures. The pullback feature of the Spinvision (PIMr) withdraws the imaging core within the protective sheath for a maximum of 15 cm.
The FFR Modality is indicated in all blood vessels, including coronary and peripheral arteries, to measure intravascular blood pressure during diagnostic angiography and/or interventional procedures.
The iFR Modality is intended to be used in conjunction with currently marketed Volcano pressure wires. In the coronary anatomy, the iFR modality has a diagnostic cut- point of 0.89 which represents an ischemic threshold and can reliably guide revascularization decisions during diagnostic catheterization procedure. When used as for a pullback assessment, the iFR modality is intended as a visual aid in decision making by indicating the relative location and severity of the stenoses such as, multiple lesions or diffuse disease.
### SUBSTANTIAL EQUIVALENCE:
The IntraSight Mobile System is a modification to the currently marketed IntraSight System cleared under K190078. The purpose of the modification is to provide the cath lab integrated system functionality on a light-weight mobile cart. The functionality of the system remains the same and is now available in a mobile version with a touch screen on the panel PC. For additional protection of the secondary controller, a rugged housing has been added that can be attached to the cart or to the bedside.
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Image /page/5/Picture/1 description: The image shows the logo for Volcano Corporation. The logo consists of a gray square with a blue triangle inside, followed by the word "VOLCANO" in blue, and the words "PRECISION GUIDED THERAPY" in black below. The logo is simple and modern, and the colors are clean and professional.
None of the modifications effect or alter the fundamental scientific technologies of the currently marketed device.
The proposed IntraSight Mobile System has the following similarities to the currently marketed IntraSight System:
- same intended use and operating principle ●
- have the same Indications for Use ●
- incorporates the same basic design for image acquisition, measurements, and archiving
- incorporates the same basic materials ●
- uses the same Patient Interface Modules, and the same compatible catheters and pressure wires
- uses the same software platform and user interface
- is designed and manufactured to the same electrical and physical safety standards
### PERFORMANCE DATA:
Performance testing completed for a determination of substantial equivalence included the following:
- EMC and Electrical Safety Testing ●
- Environmental Testing
- Design Verification
- Software Verification and Validation
- Packaging Validation ●
- Simulated Use / Usability Validation ●
- Image Validation
### CONCLUSION:
All device acceptance criteria were met. Results of testing show that the proposed IntraSight Mobile System meets its intended use. The differences between the subject device and predicate device do not raise new questions of safety and/or effectiveness. Therefore, the proposed IntraSight Mobile System is substantially equivalent to the predicate IntraSight System.
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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.