The Pronto catheter is indicated for the removal of fresh, soft emboli and thrombi from vessels in the coronary and peripheral vasculature.
Device Story
Pronto V4 is a dual-lumen rapid exchange extraction catheter; used for removing fresh, soft emboli and thrombi from coronary and peripheral vessels. Device features stiff proximal region, flexible distal region, rounded distal tip with sloped extraction opening, and radiopaque marker band. Distal 18 cm has hydrophilic coating for deliverability. Operated by physicians in clinical settings; utilizes 30 mL syringes attached via extension line and stopcock to create aspiration for thrombus removal. Includes filter basket for collecting thrombus for lab analysis. Guidewire compatible (≤0.014 inches).
Clinical Evidence
Bench testing only. Verification testing included simulated anatomy/concomitant device use, hydrophilic coating integrity, thrombus aspiration, kink resistance, air aspiration, tensile, torque, and dimensional verifications. Biocompatibility and hemocompatibility assessments included cytotoxicity, sensitization, irritation, acute systemic toxicity, material-mediated pyrogens, hemolysis, coagulation, prothrombin time, hematological parameters, complement activation, and thrombogenicity. All results met acceptance criteria.
Technological Characteristics
Dual-lumen rapid exchange catheter; thermoplastics construction; hydrophilic coating; radiopaque marker band; ISO 594-1/594-2 compliant luer fittings; ethylene oxide sterilization. Available in 5.5F, 7F, and 8F sizes.
Indications for Use
Indicated for removal of fresh, soft emboli and thrombi from coronary and peripheral vasculature.
Regulatory Classification
Identification
An embolectomy catheter is a balloon-tipped catheter that is used to remove thromboemboli, i.e., blood clots which have migrated in blood vessels from one site in the vascular tree to another.
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Image /page/0/Picture/0 description: The image contains the logos of the Department of Health & Human Services and the U.S. Food & Drug Administration (FDA). The Department of Health & Human Services logo is on the left, and the FDA logo is on the right. The FDA logo includes the letters "FDA" in a blue square, followed by the words "U.S. FOOD & DRUG ADMINISTRATION" in blue text.
May 20, 2021
Vascular Solutions, Inc. Matt Nienstedt Regulatory Affairs Associate 6464 Sycamore Court North Minneapolis, Minnesota 55369
Re: K103405
Trade/Device Name: Pronto V4 extraction catheter Regulation Number: 21 CFR 870.5150 Regulation Name: Embolectomy catheter Regulatory Class: Class II Product Code: OEZ
Dear Matt Nienstedt:
The Food and Drug Administration (FDA) is sending this letter to notify you of an administrative change related to your previous substantial equivalence (SE) determination letter dated December 22, 2010. Specifically, FDA is updating this SE Letter because FDA has created a new product code to better categorize your device technology.
Please note that the 510(k) submission was not re-reviewed. For questions this letter please contact Gregory O'Connell, OHT2: Office of Cardiovascular Devices, (301) 796-6075, Gregory. Oconnell(@FDA.HHS.gov.
Sincerely,
Digitally signed by Gregory W. Gregory W. O'connell -S O'connell -S 09:47:10-04'00'
Gregory O'Connell Assistant Director DHT2C: Division of Coronary and Peripheral Intervention Devices OHT2: Office of Cardiovascular Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
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Image /page/1/Picture/1 description: The image shows the logo for the Department of Health & Human Services USA. The logo consists of a stylized eagle with three stripes representing the three branches of government. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" are arranged in a circle around the eagle.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
Vascular Solutions, Inc. c/o Mr. Matt Nienstedt 6464 Sycamore Court Minneapolis, MN 55369 DEC 2 2 2010
Re: K103405
Trade/Device Name: Pronto® V4 Extraction Catheter Common Name: Catheter, Embolectomy Regulation Number: 21 CFR 870.5150 Regulatory Class: II Product Code: DXE Dated: December 14, 2010 Received: December 15, 2010
Dear Mr. Nienstedt:
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. 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.
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Page 2 - Mr. Matt Nienstedt
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); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); 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.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRHOffices/ucm115809.htm1 for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportalProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## DEC 2 2 2010
# Indications for Use
# 510(k) Number (if known): K103405
Device Name: Pronto V4 extraction catheter
## Indications for Use:
The Pronto catheter is indicated for the removal of fresh, soft emboli and thrombi from vessels in the coronary and peripheral vasculature.
Prescription Use __ X (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use _________________________________________________________________________________________________________________________________________________________ (21 CFR 801 Subpart C)
The Brand Company of Child Call And Concessions and Charles Commenders and Market Children
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
| Concurrence of CDRH, Office of Device Evaluation (ODE) |
|--------------------------------------------------------|
| |
| |
| <img alt="signature" src="signature.png"/> |
| (Division Sign-Off) |
|------------------------------------|
| Division of Cardiovascular Devices |
510(k) Number_________________________________________________________________________________________________________________________________________________________________
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## 2 510(k) Summary
[As required by 21 CFR 807.92] 510(k) Number: K103405
## Date Prepared: December 20, 2010
## Submitter's Information / Contact Person
Manufacturer
Vascular Solutions, Inc. 6464 Sycamore Court Minneapolis, MN 55369 USA Establishment Registration # 2134812
#### Contact Person
Matt Nienstedt Regulatory Affairs Associate Tel: 763.656.4317 (direct) Fax: 763.656.4253 Email: mnienstedt@vascularsolutions.com Alternate Contact Person Stacy Ouellette Senior Regulatory Affairs Operations Associate Tel: 763.656.4217 (direct) Fax: 763.656.4253 Email: souellette@vascularsolutions.com
#### General Information
| Trade Name | Pronto® V4 extraction catheter |
|---------------------|--------------------------------------------------------------------|
| Common / Usual Name | Extraction catheter |
| Classification Name | 21 CFR 870.5150, Embolectomy Catheter |
| Predicate Device | Pronto V3 extraction catheter (K083784 - Vascular Solutions, Inc.) |
#### Device Description
The Pronto V4 extraction catheter (Pronto) is a dual lumen rapid exchange catheter that has a working length of approximately 138 cm and is packaged with related accessories. The smaller wire lumen of the catheter is able to accommodate guidewires ≤0.014 inches in diameter. The larger extraction lumen allows for the removal of thrombus by use of the included 30 mL syringes through the extension line and stopcock. The catheter has a stiff proximal region and a flexible distal region. The catheter has a rounded distal tip with a protected, sloped opening of the extraction lumen to facilitate advancement of the catheter into the blood vessel and maximize extraction of thrombus
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through the extraction lumen. The catheter contains a radiopaque marker band located approximately 2 mm from the distal tip. The distal 18 cm of the catheter has a hydrophilic coating to enhance deliverability to the target vasculature. The device has positioning marks located at 95 cm and 105 cm from the distal tip, respectively. The proximal end of the catheter incorporates a standard luer adapter to facilitate the attachment of catheter to the included extension line, stopcock, and 30 mL syringes. A filter basket is included for assistance in filtering the blood removed during the procedure for laboratory analysis of any thrombus.
## Intended Use / Indications
The Pronto catheter is indicated for the removal of fresh, soft emboli and thrombi from vessels in the coronary and peripheral vasculature.
## Technological Characteristics
The Pronto V4 and predicate Pronto V3 devices have the following characteristics in common:
- . Compatibility with 0.014 inch guidewires
- . Shaft construction - several thermoplastics reflowed together.
- Silva tip with radiopaque marker band .
- . Positioning marks
- . Hydrophilic coating
- Hub configuration Both the predicate and subject device have hubs that are compatible . with ISO 594-1 and ISO 594-2 compliant luer fittings
- Sterilized by ethylene oxide .
- Provided with identical accessories .
- Packaged in identical sterile pouch and retail box .
The Pronto V4 and predicate Pronto V3 devices differ in the following:
- Hub and shaft materials and construction .
- The Pronto V4 extraction catheter is offered in additional sizes (5.5F, 7F, and 8F) .
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## Substantial Equivalence and Summary of Studies
The Pronto V4 extraction catheters are substantially equivalent to the specified predicate device based on comparisons of the device functionality, technological characteristics, and indications for use. The device design was qualified through the following tests:
- . Simulated anatomy/concomitant device use
- . Hydrophilic coating integrity and particulates
- Thrombus aspiration .
- Kink resistance .
- . Air aspiration
- . Tensile
- Torque .
.
- Dimensional verifications .
- Radiopacity .
- Biocompatibility
- o Cytotoxicity
- Sensitization o
- Irritation/intracutaneous reactivity o
- Acute systemic toxicity o
- o Material mediated pyrogens
- Hemocompatibility o
- . Hemolysis
- 트 Coagulation
- 페 Prothrombin time
- Hemotological parameters n
- T Complement activation
- 트 Thrombogenicity
Results of the verification testing and biomaterial assessments met the specified acceptance criteria and did not raise new safety or performance questions.
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.