K973645 · Boston Scientific Corp · KRA · Nov 19, 1997 · Cardiovascular
Device Facts
Record ID
K973645
Device Name
RENEGADE FIBER BRAIDED MICROCATHETER
Applicant
Boston Scientific Corp
Product Code
KRA · Cardiovascular
Decision Date
Nov 19, 1997
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.1210
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Renegade Fiber Braided Microcatheter is intended for general intravascular use, including neuro, peripheral, and coronary vasculature. The catheter can be coaxially tracked over a steerable quidewire in order to access distal, tortuous vasculature. Once the subselective region has been accessed, the catheter can be used for the controlled and selective infusion of diagnostic, embolic, or therapeutic materials into vessels. Diagnostic, embolic, or therapeutic agents to be used in accordance with specifications outlined by the manufacturer.
Device Story
Renegade Fiber Braided Microcatheter is a single-lumen intravascular catheter; used for accessing distal, tortuous vasculature in neuro, peripheral, and coronary systems. Device is tracked coaxially over a steerable guidewire. Once positioned, it enables controlled, selective infusion of diagnostic (e.g., contrast media), embolic, or therapeutic agents. Operated by clinicians in clinical settings. Benefits include improved access to difficult-to-reach vessels for targeted delivery of therapeutic or diagnostic materials.
Clinical Evidence
No clinical data; substantial equivalence supported by mechanical, biocompatibility, and animal testing.
Technological Characteristics
3.0F/2.5F single-lumen catheter; progressively softer shaft from proximal to distal ends; hydrophilic coating on outer surface; available in 130 cm and 150 cm lengths with 10 cm, 20 cm, and 30 cm distal segments; ethylene oxide sterilization.
Indications for Use
Indicated for patients requiring access to distal, tortuous neuro, peripheral, and coronary vasculature for the infusion of diagnostic, embolic, or therapeutic agents.
Regulatory Classification
Identification
A continuous flush catheter is an attachment to a catheter-transducer system that permits continuous intravascular flushing at a slow infusion rate for the purpose of eliminating clotting, back-leakage, and waveform damping.
Predicate Devices
Evolution Microcatheter
Eddy Infusion
TurboTracker Infusion Catheter
Venture II™ Intravascular Infusion catheters
Submission Summary (Full Text)
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# NOV 19 1997
### SUMMARY OF SAFETY AND EFFECTIVENESS K973645
Pursuant to §513(i)(3)(A) of the Food, Drug, and cosmetic Act, Boston Scientific Corporation submits this summary of safety and effectiveness.
#### A. GENERAL INFORMATION
| Owner Operator Submitting | Boston Scientific Corporation |
|------------------------------|--------------------------------------------|
| this Premarket Notification: | One Boston Scientific Place |
| | Natick, MA 01757 |
| | (508) 650.8174 |
| Contact Person: | Wanda M. Carpinella |
| | Regulatory Affairs Department |
| Device Generic Name: | Intravascular Infusion Catheter |
| Device Classification: | 74 DQO Catheter, Intravascular, Diagnostic |
#### B. INDICATIONS FOR USE
The Renegade Fiber Braided Microcatheter is intended for general intravascular use, including neuro, peripheral, and coronary vasculature. The catheter can be coaxially tracked over a steerable quidewire in order to access distal, tortuous vasculature. Once the subselective region has been accessed, the catheter can be used for the controlled and selective infusion of diagnostic, embolic, or therapeutic materials into vessels. Diagnostic, embolic, or therapeutic agents to be used in accordance with specifications outlined by the manufacturer.
#### C. DESCRIPTIVE CHARACTERISTICS
The device is a 3.0F/2.5F, single lumen catheter constructed with progressively softer shaft characteristics from its proximal to its distal ends. The device is tracked coaxially over a selectively placed guide wire. To facilitate catheter introduction, the device incorporates a hydrophilic coating applied to the outer sufface of the shaft. Once the subselective region has been accessed, the lumen of the catheter can be used for infusion of diagnostic agents, such as contrast medium, and therapeutic materials. The device is available in useable lengths of 130 cm and 150 cm and in distal segment lengths of 10cm, 20cm, and 30cm.
#### D. SUBSTANTIAL EQUIVALENCE
The proposed microcatheter is substantially equivalent to the Evolution Microcatheter, and the Eddy Infusion, TurboTracker Infusion Catheter and Venture II™ Intravascular Infusion catheters. Where dimensional and material differences exist between the proposed device and the predicate devices, mechanical, biocompatibility and animal testing demonstrated that these differences do not adversely affect safety and effectiveness.
#### E. PACKAGING, STERILIZATION, AND PYROGENICITY
The proposed catheter is packaged in a heat-sealed Tyvek/mylar pouch. The product is sterilized using ethylene oxide gas.
#### F. CONCLUSION
Based on the information presented, Boston Scientific Corporation believes that the proposed infusion catheter meets the minimum requirements that are considered acceptable for its intended use and is substantially equivalent to other currently marketed intravscular infusion catheters.
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Image /page/1/Picture/2 description: The image shows the seal of the Department of Health & Human Services (HHS) of the United States. The seal features a stylized caduceus, a symbol often associated with medicine and healthcare, with a double helix-like design intertwined around a staff. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the caduceus, indicating the department's name and national affiliation.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
NOV 1 9 1997
Ms. Wanda M. Carpinella Boston Scientific Corporation One Boston Scientific Place Natick, Massachusetts 01760-1537
K973645 Re: Fiber-braided Microcatheter Requlatory Class: II (two) Product Code: 74 KRA Dated: September 22, 1997 Received: September 24, 1997
Dear Ms. Carpinella:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (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.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major requlations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such Failure to comply with the GMP regulation may result in assumptions. requlatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
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Page 2 - Ms. Wanda M. Carpinella
This letter will allow you to begin marketing your device as described in your 510(k) 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 the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4648. 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 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html".
Sincerely yours,
Thomas J. Callahan
Director Division of Cardiovascular, Respiratory, and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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510(k) Number (if known): K973645
Renegade™ Fiber Braided Microcatheter with Device Name: Hydropass™ Ccating
The Renegade Fiber Braided Microcatheter is Indications for Use: intended for general intravascular use, including neuro, peripheral, and coronary vasculature. The catheter can be coaxially tracked over a steerable guidewire in order to access distal, tortuous vasculature. Once the subselective region has been accessed, the catheter can be used for the controlled and selective infusion of diagnostic, embolic, or therapeutic materials into vessels. Diagnostic, embolic, or therapeutic agents to be used in accordance with specifications outlined by the manufacturer.
## (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED.)
Concurrence of CDRH, Office of Device Evaluaiton (ODE)
(Division Sign-Off) Division of Cardiovascular, Respiratory, nd Neurological Device : Number
Prescription Use (Per 21 CRF 801.109)
OR
Over-The-Counter Use
(Optional Format 1-2-96)
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.