DIREXION AND DIREXION HI-FLO TORQUEABLE MICROCATHETERS
K132947 · Boston Scientific Corp · KRA · Oct 18, 2013 · Cardiovascular
Device Facts
Record ID
K132947
Device Name
DIREXION AND DIREXION HI-FLO TORQUEABLE MICROCATHETERS
Applicant
Boston Scientific Corp
Product Code
KRA · Cardiovascular
Decision Date
Oct 18, 2013
Decision
SESE
Submission Type
Special
Regulation
21 CFR 870.1210
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Direxion and Direxion HI-FLO Torqueable Microcatheters are intended for peripheral vascular use. The pre-loaded Fathom and Transend Guidewires can be used to selectively introduce and position the microcatheter in the peripheral vasculature. The microcatheter can be used for controlled and selective infusion of diagnostic, embolic, or therapeutic materials into the vessel.
Device Story
Direxion and Direxion HI-FLO Torqueable Microcatheters are peripheral vascular catheters designed for selective infusion of diagnostic, embolic, or therapeutic materials. Devices feature hydrophilic-coated distal shafts, radiopaque markers for fluoroscopic visualization, and steam-shapeable distal tips. Available in small (2.5F-2.7F) and large (2.9F-3F) lumen configurations to accommodate steerable guidewires (Fathom-16, Transend 14/18). Operated by physicians in clinical settings under fluoroscopic guidance. Pre-loaded guidewire configurations facilitate navigation through distal, tortuous vasculature. Output is the delivery of therapeutic or diagnostic agents to specific vessel sites. Benefits include improved pushability, steerability, and torqueability for accessing challenging anatomy.
Clinical Evidence
Bench testing only. No clinical data provided. Performance testing included microcatheter luer compatibility, ID/OD verification, coating integrity, particulate evaluation, tensile strength, corrosion resistance, kink resistance, distal tip flexibility, proximal shaft pushability, torsional strength, maximum infusion pressure, leakage testing, embolic/PVA compatibility, chemical compatibility, guide catheter/guidewire/accessory compatibility, shelf life, packaging, sterilization, and biocompatibility.
Technological Characteristics
Peripheral vascular microcatheters with hydrophilic coating and radiopaque distal markers. Available in small (2.5F-2.7F) and large (2.9F-3F) lumen sizes. Steam-shapeable distal tips. Proximal end features standard luer with rotating hemostatic valve or Y-adapter. Materials and sterilization methods are consistent with predicate. No software or electronic components.
Indications for Use
Indicated for peripheral vascular use in patients requiring selective infusion of diagnostic, embolic, or therapeutic materials. Used for navigation and positioning within the peripheral vasculature.
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.
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K132947 p. 1 of 3
## 510(k) Summary
Per 21 CFR §807.92
#### Submitter's Name and Address
Contact Name and Information
Boston Scientific Corporation One Scimed Place Maple Grove, MN 55311 USA
Maureen Sundeen Principal of Regulatory Affairs 763-494-2903 Phone: 763-494-2222 Fax: Email: sundeenm@bsci.com
Date Prepared
Common Name
Classification
Predicate Device
Proprietary Name
September 18, 2013
Single Product Configurations Direxion™ Torqueable Microcatheter
Direxion™ HI-FLO™ Torqueable Microcatheter
Preloaded Guidewire System Configurations Direxion™ Fathom™-16 System Pre-Loaded Torqueable Microcatheter
Direxion™ Transend™-14 System Pre-Loaded Torqueable Microcatheter
Direxion™ HI-FLO™ Fathom™-16 System Pre-Loaded Torqueable Microcatheter
Direxion™ HI-FLO™ Transend™-18 System Pre-Loaded Torqueable Microcatheter
Continuous Flush Catheters
Class II per 21 CFR 870.1210 Product Code: KRA Classification Panel: Cardiovascular
Boston Scientific Renegade HI-FLO Microcatheter (K100892, KRA, April 12, 2010)
OCT 1 8 2013
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K132947 p. 2 of 3
#### Intended Use / Indications for Use
The Direxion and Direxion HI-FLO Torqueable Microcatheters are intended for peripheral vascular use. The pre-loaded Fathom and Transend Guidewires can be used to selectively introduce and position the microcatheter in the peripheral vasculature. The microcatheter can be used for controlled and selective infusion of diagnostic, embolic, or therapeutic materials into the vessel.
#### Device Description
The Direxion Microcatheter is available in small and large lumens. The Direxion Torqueable Microcatheter (Direxion) is a small lumen microcatheter with a distal outside diameter of 2.5F (0.85 mm), and a maximum outside diameter of 2.7F (0.95 mm). It has an inside diameter of 0.021 in (0.5 mm) minimally in the proximal and distal regions. The microcatheter lumen is able to accommodate steerable guidewires with diameters ≤ 0.018 in (0.47 mm).
The Direxion HI-FLO Torqueable Microcatheter (Direxion HI-FLO) is a large lumen microcatheter with a distal outside diameter of 2.9F (1.00 mm), and a maximum outside diameter of 3F (1.05 mm). It has an inside diameter of 0.027 in (0.6 mm) minimally in the proximal and distal regions. The microcatheter lumen is able to accommodate steerable guidewires with diameters ≤ 0.021 in (0.53 mm).
The Direxion and Direxion HI-FLO Microcatheters are available in a variety of tip shapes (Straight, Bern, Swan Neck, and J Shape) to aid with accessing challenging anatomy. The distal outer surface of the microcatheter is coated with a hydrophilic coating. A radiopaque marker is located at the distal tip to facilitate fluoroscopic visualization. Some Direxion Microcatheters have a second marker 3 cm proximal to the first marker. The distal tip of the microcatheter is steam shapeable. The proximal end incorporates a standard luer with rotating hemostatic valve (RHV) or Y-adapter.
The Direxion and Direxion HI-FLO Microcatheters are available with the following preloaded guidewires:
#### Fathom-16 Steerable Guidewire (K111485)
- 0.016 in (0.41 mm) diameter; 140 or 180 cm lengths
#### Transend 14/18 Steerable Guidewires (K971254 / K964611)
- 0.014 in (0.37 mm) or 0.018 in (0.47 mm) diameters; 135, 165 or 190 cm lengths
The guidewires have a hydrophilic coating to provide lubricity, which aids in the navigation of distal, tortuous vasculature. The guidewires are radiopaque to allow for visualization under fluoroscopy and the tips are shapeable.
Accessories may include a RHV or Y-adapter, steam shaping mandrel, microcatheter introducer, quidewire introducer and torque device.
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K132947 p. 3 of 3
#### Comparison of Technological Characteristics
The Direxion and Direxion HI-FLO Torqueable Microcatheters are similar in fundamental design, function, device materials, packaging, sterilization, operating principle, intended use / indication for use and fundamental technology as the predicate device, Renegade HI-FLO Microcatheter. The modifications from the predicate device include changes to catheter design and materials for added pushability, steerability, and torqueability in accessing the treatment site. In addition the microcatheters are provided with preloaded guidewires for physician convenience. A minor change was made to the packaging design to accommodate the preloaded guidewires.
#### Performance Data
The following bench testing was conducted for design elements and performance characteristics deemed appropriate to demonstrate equivalence to the predicate device. The Direxion and Direxion HI-FLO Torqueable Microcatheters including packaging met the predetermined acceptance criteria ensuring substantial equivalence to the predicate device. No new safety or performance issues were raised during testing.
- Microcatheter Luer Compatibility �
- Microcatheter ID / OD Verification .
- Catheter Usable Length .
- . Microcatheter Coating Integrity
- Particulate Evaluation ●
- Tensile Strength .
- Corrosion Resistance .
- Kink Resistance o
- Distal Tip Flexibility ●
- Proximal Shaft Pushability .
- Torsional Strength .
- Maximum Infusion Pressure o
- . Freedom from Liquid Leakage
- Embolic Coil Compatibility .
- PVA Particle and Embolic Sphere o Compatibility
- Chemical Compatibility .
- . Guide Catheter Compatibility
- Guidewire Compatibility .
- Torque Device Compatibility .
- Y-Adapter / RHV Compatibility .
- Shelf Life .
- Packaging Testing .
- Sterilization .
- Biocompatibility .
#### Conclusion
Boston Scientific has demonstrated that the modification made for the Direxion and Direxion HI-FLO Torqueable Microcatheters are substantially equivalent in fundamental design, technology, function, device materials, packaging, sterilization, operating principle, and intended use / indication for use as the predicate device, Renegade HI-FLO Microcatheter.
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Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is an abstract symbol resembling an eagle or bird in flight, composed of three curved lines.
Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
October 18, 2013
Boston Scientific Corporation Ms. Maureen Sundeen Principal of Regulatory Affairs One Scimed Place Maple Grove, MN 55311
Re: K132947
Trade/Device Name: Direxion™ Torqueable Microcatheter and Direxion™ HI-FLO™
Torqueable Microcatheter
Regulation Number: 21 CFR 870.1210 Regulation Name: Continuous Flush Catheters Regulatory Class: II Product Code: KRA Dated: September 18, 2013 Received: September 19, 2013
Dear Ms. Sundeen:
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.
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
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Page 2 - Ms. Maureen Sundeen
forth in the quality systems (OS) 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 contact the Division of Small Manufacturers, International and Consumer Assistance at its tollfree number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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/ReportaProblem/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/ResourcesforYou/Industry/default.htm.
ﮧ ، ، ،
Sincerely vours.
# Bram D. Zockerman -S
Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
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Special 510(k) Premarket Notification Direxion Microcatheters
### Indications for Use
510(k) Number (if known):
#### Device Name:
Direxion™ Torqueable Microcatheter Direxion™ HI-FLO™ Torqueable Microcatheter Direxion ™ Fathom ™ - 16 System Pre-Loaded Torqueable Microcatheter Direxion™ Transend™-14 System Pre-Loaded Torqueable Microcatheter Direxion™ HI-FLO™ Fathom™-16 System Pre-Loaded Torqueable Microcatheter Direxion™ HI-FLO™ Transend™-18 System Pre-Loaded Torqueable Microcatheter
#### Indications for Use:
The Direxion and Direxion HI-FLO Torqueable Microcatheters are intended for peripheral vascular use. The pre-loaded Fathom and Transend Guidewires can be used to selectively introduce and position the microcatheter in the peripheral vasculature. The microcatheter can be used for controlled and selective infusion of diagnostic, or therapeutic materials into the vessel.
Prescription Use × (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of Center for Devices and Radiological Health (CDRH)
Bram D. Zucker 2013.10.18 14
Page 1 of 1
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.