The TOTAL across™ crossing support catheter is intended to guide and support a guidewire during the access of peripheral arteries, allow for wire exchanges, and provide a conduit for the infusion of saline solutions or diagnostic contrast agents.
Device Story
The TOTAL across is an over-the-wire, single-lumen crossing support catheter designed for use in peripheral artery access. It features a spiral hypotube construction, a proximal female hub, and a distal flexible section with an atraumatic tapered tip. The distal end includes a lubricious, hydrophilic coating and two radiopaque markers for visualization. The device is compatible with 0.014" guidewires and 4F introducer sheaths, with working lengths of 100cm and 150cm. Operated by clinicians in a clinical setting, the catheter is tracked over a guidewire to navigate peripheral vasculature. It serves as a conduit for wire exchanges or the delivery of saline or contrast media. By providing support and a stable pathway, it assists the physician in navigating complex arterial anatomy, potentially improving procedural success during peripheral interventions.
Clinical Evidence
Bench testing only. No clinical data. Testing included surface inspection, dimensions, trackability, flexibility, kink resistance, guidewire/sheath compatibility, bond strength, torque strength, radiopacity, coating integrity, particulate evaluation, burst pressure, flow rates, and luer fitting compliance. Biocompatibility testing followed ISO 10993-1, including cytotoxicity, sensitization, intracutaneous reactivity, systemic toxicity, pyrogenicity, mutagenicity, hemolysis, complement activation, and in-vivo thromboresistance.
Technological Characteristics
Single-lumen over-the-wire catheter; spiral hypotube construction; hydrophilic coating; two radiopaque markers; 0.014" guidewire compatibility; 4F introducer sheath compatibility; 100cm/150cm lengths. Materials evaluated per ISO 10993-1. Mechanical testing per ISO 594-1/2 for luer fittings.
Indications for Use
Indicated for guiding and supporting a guidewire during access of peripheral arteries, facilitating wire exchanges, and providing a conduit for saline or diagnostic contrast infusion. For prescription use only.
Regulatory Classification
Identification
A percutaneous catheter is a device that is introduced into a vein or artery through the skin using a dilator and a sheath (introducer) or guide wire.
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#### 3.0 510(k) Summary
This 510(k) Summary is submitted in accordance with the requirements of 21 CFR Part 807, Section 807.92(c).
| Applicant/Submitter: | Medtronic Vascular<br>3576 Unocal Place<br>Santa Rosa, CA 95403<br>Tel: 707-525-0111<br>Fax: 707-566-1245<br>Contact person: Diana Johnson, Regulatory Affairs Director |
|--------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Official Contact Person: | Maddalena Pinsi, Sr. Regulatory Affairs Specialist<br>INVATEC, S.p.A.<br>7, Via Martiri della Libertà<br>Roncadelle, ITALY 25030.<br>Tel: 707-591-2656<br>Fax: 707-566-1245<br>Email: maddalena.pinsi@medtronic.com |
| Alternate Contact: | Diana Johnson, Regulatory Affairs Director<br>Medtronic Vascular<br>3576 Unocal Place<br>Santa Rosa, CA 95403<br>Tel: 707-591-2656<br>Fax: 707-566-1245<br>Email: diana.j.johnson@medtronic.com |
| Date Prepared: | November 15, 2013 |
| Device Information: | |
| Trade Name: | TOTAL acrossTM |
| Common Name: | Crossing Support Catheter |
| Regulation Name: | Percutaneous Catheter |
| Classification: | Class II |
| Classification Panel: | Cardiovascular |
| Regulation Number: | 21 CFR 870.1250 |
| Product Code: | DQY |
Medtronic Vascular
TOTAL across™
K____ Traditional 510(k)
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#### Predicate Devices
- Quick Cross Extreme Support Catheter (K082561 SE- December 1010, 2008 and K092396 . SE- September 4th, 2009)
- Seeker™ Crossing Support Catheter (K103367 SE- December 8th, 2010) .
### Device Description
The TOTAL across is an over the wire (OTW) single lumen catheter composed of a spiral hypotube which provides a smooth transition from proximal to distal part, a proximal female hub and a distal flexible part with an atraumatic tapered tip.
The distal end of the catheter features a lubricious, hydrophilic coating and 2 radiopaque markers. The TOTAL across is 0.014" (0.36mm) guidewire compatible, and features working lengths of 100cm and 150cm.
### Indications for Use
The TOTAL across™ crossing support catheter is intended to guide and support a guidewire during the access of peripheral arteries, allow for wire exchanges, and provide a conduit for the infusion of saline solutions or diagnostic contrast agents.
The indications for use for the TOTAL across are equivalent and covered by the currently cleared predicate devices, Quick Cross® Extreme Support Catheter (hereinafter referred to as "Quick Cross Extreme") and Seeker"14 Crossing Support Catheter referred to as "Seeker").
### Technological Characteristics
The overall design and the fundamental scientific technology (operating principle and mechanism of action) of the TOTAL across device (hereinafter referred to also as "subject device") are substantially equivalent to the currently cleared predicate devices, Quick Cross Extreme and Seeker.
The subject device has a guidewire compatibility of 0.014", as the Quick Cross Extreme and the Seeker predicate devices (which also have additional platforms having 0.018" and 0.035" guidewire compatibilities).
The TOTAL across has an introducer sheath compatibility of 4F, which is the same as the Quick Cross Extreme and Seeker predicate devices introducer sheath compatibility for the 0.014" platform.
The TOTAL across usable lengths (100cm and 150cm) are within the Quick Cross Extreme and Seeker predicate devices' range (from 65cm to 150cm).
The distal end of the subject device features a lubricious, hydrophilic coating as are the predicate devices Ouick Cross Extreme and Seeker.
The subject device features two radiopaque markers per device, while the Quick Cross Extreme predicate device features three radiopaque markers per device. The visibility of the subject device markerbands has been considered satisfactory and comparable to the predicate device's visibility.
Refer to Section 9.4 and to Section 10.0 for a detailed description of the subject device and for its comparison to the predicate devices.
- Medtronic Vascular TOTAL across TM K ... Traditional 510(k)
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Comparative testing was also conducted with the subject device and the predicate devices. The bench test results demonstrated that the subject device met the acceptance criteria and that the predicate devices and the subject device are comparable with respect to the performance characteristics.
# Summary of Bench Testing
The TOTAL across was thoroughly tested on the bench to evaluate and verify that it meets the required performance specifications. The bench testing plan was developed with the consideration of the recommendations outlined in the applicable FDA guidance documents and ISO standards. Testing performed on the TOTAL across device included the following:
- Surface Inspection and Device Dimensions .
- . Device Preparation, Trackability, Flexibility and Kink test
- . Introducer Sheath and Guidewire Compatibility
- . Catheter Bond Strength
- Tip Pull ●
- . Torque Strength
- . Radiopacity
- . Coating Evaluation
- . Particulate evaluation
- . Catheter Body Burst Pressure
- Contrast Media and Saline Solution Flow Rate .
- . Hub Test according to ISO 594-1:1986 - Conical fittings with 6 % (Luer) taper for syringes, needles and certain other medical equipment - Part 1: General requirements and to ISO 594-2:1998 - Conical fittings with 6 % (Luer) taper for syringes, needles and certain other medical equipment – Part 2: Lock fittings
- . Crossability
All of the pre-determined acceptance criteria were met and the testing passed.
### Summarv of Biocompatibility Testing
The TOTAL across is an externally communicating device, which contacts circulating blood for the limited contact duration (<24hours).
Biocompatibility testing was conducted on the finished TOTAL across in accordance with the principles of the ANSI/AAMI/ISO 10993-1:2009 Biological evaluation of medical devices --Part 1: Evaluation and testing within a risk management process as specified in the FDA Blue Book Memorandum #G95-1 Use of International Standard ISO-10993, 'Biological Evaluation of Medical Devices Part 1: Evaluation and Testing' and in accordance with FDA 21 CFR Part 58: Good Laboratory Practice for Non clinical Laboratory Studies, and FDA guidance: Class II Special Controls Guidance Document for Certain Percutaneous Transluminal Coronary Angioplasty (PTCA) Catheters (Sept 2010).
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The biocompatibility testing performed for the TOTAL across device included the following:
- Cytotoxicity Study using the ISO MEM Elution Method .
- . ISO Guinea Pig Maximization Sensitization Test
- . ISO Intracutaneous Study in Rabbits
- ISO Systemic Toxicity Study in Mice .
- . USP Pyrogen study - Material mediated
- Bacteria Reverse Mutation Study .
- . ASTM Hemolysis Study
- . C3a Complement Activation Assay
- . SC5b-9 Complement Activation Assay
- In-vivo Thromboresistance Study in the Dog, Jugular Vein .
- . ASTM Partial Thromboplastin time
All of the pre-determined acceptance criteria were met and the testing passed.
### Assessment of non-clinical performance data for equivalence
Comparative and biocompatibility testing of the TOTAL across were performed in accordance with the relevant FDA guidance, ISO and ASTM standards. Results from these non-clinical testing demonstrates that the TOTAL across met the pre-determined acceptance criteria and results from the comparative testing also demonstrate that the subject device performs comparably to the predicate devices. No new type of safety or effectiveness issues were observed during the testing.
### Conclusion
Results from the non-clinical performance testing demonstrate that the TOTAL across is substantially equivalent to the predicate devices in terms of safety, effectiveness and performance.
In conclusion, based on the considerations above, Medtronic believes that the TOTAL across is substantially equivalent to the predicate devices Quick Cross Extreme and Seeker in terms of indications for use, overall design, fundamental scientific technology (operating principle and mechanism of action) and performance characteristics, and that it does not raise new type of questions of safety and effectiveness. Therefore it is suitable for the Traditional 510(k) process.
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Image /page/4/Picture/1 description: The image shows the logo for the Department of Health & Human Services USA. The logo consists of a circular border with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" written around it. Inside the circle is an emblem featuring three stylized human figures.
Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
March 26, 2014
Medtronic Vascular Ms. Diana Johnson Regulatory Affairs Director 3576 Unocal Place Santa Rosa, CA 95403
Re: K133539
> Trade/Device Name: TOTAL across Regulation Number: 21 CFR 870.1250 Regulation Name: Percutaneous Catheter Regulatory Class: Class II Product Code: DOY Dated: February 21, 2014 Received: February 24, 2014
Dear Ms. Johnson,
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 that + DAT has I 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 devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in
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Page 2 - Ms. Diana Johnson
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" (21 CFR 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/Resourcesfor You/Industry/default.htm.
Sincerely yours,
# Kenneth J. Cavanaugh -S
for 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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#### CONFIDENTIAL
May not be reproduced without written permission from Medtronic, Inc.
| DEPARTMENT OF HEALTH AND HUMAN SERVICES<br>Food and Drug Administration | Form Approved: OMB No. 0910-012<br>Expiration Date: December 31, 2012<br>See PRA Statement on last page. |
|-------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------|
| Indications for Use | |
| 510(k) Number (if known) | K133539 |
| Device Name | |
TOTAL across™
Indications for Use (Describe)
The TOTAL across™ crossing support cather: is intended to guide and support a guide wire during the access of peripheral arents.
| Type of Use (Select one or both, as applicable) | <div> <span> <input checked="true" type="checkbox"/> Prescription Use (Part 21 CFR 801 Subpart D) </span> <span> <input type="checkbox"/> Over-The-Counter Use (21 CFR 801 Subpart C) </span> </div> |
|-------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|-------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON A SEPARATE PAGE IF NEEDED.
FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
Kenneth J. Cavanaugh -S
| FORM FDA 3881 (9/13) | Page 1 of 2 |
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Medtronic, Inc. TOTAL across K133539, Traditional 510(k)
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.