The Q Distal Access Catheter is indicated for use with compatible guide catheters in facilitating the insertion and guidance of microcatheters into a selected blood vessel in the peripheral, coronary and neuro vascular systems.
Device Story
Single-lumen, variable stiffness catheter; stainless-steel control wire proximal; coiled/braided shaft distal; hydrophilic coating. Used endovascularly to insert/guide microcatheters under fluoroscopy during diagnostic/therapeutic procedures for arterial disease/damage. Operated by physicians in clinical settings. Introduced via 8F guide catheter/6F guide sheath over guidewire/microcatheter; pin vise used for advancement; syringe/flush tool provided for flushing. Radiopaque markers at distal/proximal ends allow visualization. Facilitates access to target vessels, aiding clinical decision-making by enabling delivery of therapeutic/diagnostic devices.
Clinical Evidence
Bench testing only. No clinical data provided. Testing included design verification (label integrity, bubble leak, seal strength, coating particulate, dimensional verification, tip inspection, surface integrity, heat shrink inspection, coating uniformity, simulated use, coating adhesion, push/track, kink resistance, liquid leak, static burst, tensile strength) and biocompatibility (cytotoxicity, hemolysis).
Technological Characteristics
Single-lumen, variable stiffness catheter; stainless-steel proximal control wire; coiled/braided distal shaft; hydrophilic coating. Radiopaque markers. Sizes 3F-6F. Sterilized via Ethylene Oxide (ISO 11135:2014). Biocompatibility per ISO 10993-7, USP 24 Chapter 85, and ASTM F756. No software or electronic components.
Indications for Use
Indicated for use with compatible guide catheters to facilitate insertion and guidance of microcatheters into selected blood vessels in peripheral, coronary, and neurovascular systems.
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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September 19, 2023
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MIVI Neuroscience, Inc. Srija Reddy Bandari Regulatory Affairs Specialist 6545 City West Parkway Eden Prairie, Minnesota 55344
Re: K222948
Trade/Device Name: Q Distal Access Catheter Regulation Number: 21 CFR 870.1250 Regulation Name: Percutaneous Catheter Regulatory Class: Class II Product Code: QJP, DQY Dated: August 18, 2023 Received: August 21, 2023
Dear Srija Reddy Bandari:
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 statutes and regulations administered by other Federal agencies. You must comply with all the Act's
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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 (OS) 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 mediation-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,
# Naira Muradyan -S
Naira Muradyan, Ph.D. Assistant Director DHT5A: Division of Neurosurgical, Neurointerventional and Neurodiagnostic Devices OHT5: Office of Neurological and Physical Medicine 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) K222948
Device Name Q Distal Access Catheter
Indications for Use (Describe)
The Q Distal Access Catheter is indicated for use with compatible guide catheters in facilitating the insertion and guidance of microcatheters into a selected blood vessel in the peripheral, coronary and neuro vascular systems.
Type of Use (Select one or both, as applicable)
> Prescription Use (Part 21 CFR 801 Subpart D)
| Over-The-Counter Use (21 CFR 801 Subpart C)
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# 510(k) SUMMARY K222948
#### Date Prepared: 09-18-2023
| Table 1. General Information | |
|-----------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------|
| 510(k) Submitter | Contact |
| MIVI Neuroscience, Inc.<br>6545 City West Parkway<br>Eden Prairie, MN 55344 | Srija Reddy Bandari<br>Regulatory Affairs Specialist<br>Email: sbandari@mivineuro.com<br>Phone: (612) 447-2897<br>Fax: (952)-944-3488 |
| Trade Name | Q Distal Access Catheter |
| Common Name | Q Distal Access Catheter |
| Classification Information | Percutaneous catheter; 21 CFR 870.1250 (Class II)<br>ProCode: QJP, DQY<br>Panel: Cardiovascular |
| Predicate Device | MIVI Q Distal Access Catheter (K192558) |
#### Device Description
The Q Distal Access Catheter is a single-lumen, variable stiffness catheter with radiopaque markers on the distal and proximal end of the catheter portion for angiographic visualization. The proximal portion of the device is a stainless-steel control wire. The distal portion of the device is a coiled/braided catheter shaft with hydrophilic coating along the entire length to reduce friction during use. The Q Distal Access Catheter may be introduced via an 8F guide catheter/6F guide sheath and over a guidewire/microcatheter into the arterial vasculature until the desired vessel is reached. The pin vise may be used to advance the catheter. The syringe and flush tool components may aid in the flushing of the Q Distal Access Catheter.
#### Intended Use / Indications for Use
The O Distal Access Catheter is indicated for use with compatible guide catheters in facilitating the insertion and guidance of microcatheters into a selected blood vessel in the peripheral, coronary and neuro vascular systems.
#### Substantial Equivalence Comparison
Table 2 compares the intended use and technological characteristics of the subject and predicate devices.
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| Table 2: Comparison with Currently Marketed Predicate | | | |
|-----------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|
| Feature | Subject Device<br>Q Distal Access Catheter | Currently Marketed Predicate<br>Device<br>MIVI Q Distal Access Catheter | |
| 510(k) Holder &<br>Manufacturer | MIVI Neuroscience, Inc. | MIVI Neuroscience, Inc. | |
| 510(k)# | K222948 | K192558 | |
| Classification<br>Information | Percutaneous catheter<br>21 CFR 870.1250 (Class II)<br>ProCode: QJP, DQY; Panel: Cardiovascular | | |
| Indications / Intended Use / Principle of Operation | | | |
| Indications /<br>Intended Use | Indicated for use with compatible guide catheters in facilitating the<br>insertion and guidance of microcatheters into a selected blood vessel in<br>the peripheral, coronary and neuro vascular systems. | | |
| Principle of<br>Operation | Used to endovascularly insert and guide microcatheters under<br>fluoroscopy during diagnostic and/ or therapeutic procedures for patients<br>with arterial disease or damage. | | |
| Design Information | | | |
| Configuration | Distal | Single-lumen, variable stiffness, braided (5F, 6F) / coiled (3F, 4F) | |
| | Proximal | Control (push) wire through a guide catheter luer fitting | |
| | Tip | Straight | |
| | Radiopaque<br>Markers | Two (2)- Distal and Proximal | |
| | Catheter<br>Coating | Hydrophilic | |
| | Catheter Sizes | 3F, 4F, 5F, 6F | |
| Catheter<br>Lengths | 3F | 148 cm | 148 cm |
| | 4F | 135 cm and 145 cm | 135 cm |
| | 5F | 130 cm and 140 cm | 130 cm |
| Table 2: Comparison with Currently Marketed Predicate | | | |
| Feature | Subject Device<br>Q Distal Access Catheter | Currently Marketed Predicate Device<br>MIVI Q Distal Access Catheter | |
| | 6F<br>130 cm and 135 cm | 130 cm | |
| Guidewire<br>Compatibility<br>(cm) | 3F<br>0.018" | | |
| | 4F | | |
| | 5F<br>0.035" | | |
| | 6F | | |
| Guide Catheter /<br>Sheath<br>Compatibility (ID) | 0.088"- 0.091" | 0.088"- 0.090" | |
| Guide Catheter/<br>Sheath Length<br>Range (cm) | 90-100 | 90-95 | |
| Catheter<br>Biomaterials | Patient contacting materials are identical between the subject and currently marketed predicate. | | |
| Accessories / Packaging / Sterilization / Shelf Life / Labeling | | | |
| Provided<br>Accessories | Syringe (5 mL)<br>Flush tool (4F/5F) | None | |
| Required<br>Accessories (not<br>provided) | Compatible Y adapter with<br>rotating hemostasis valve (lengths<br>between 6-8 cm) | Same | |
| Package<br>Configuration | Catheter inserted in a plastic tube,<br>placed in PETG tray with lid, and<br>sealed in new Tyvek pouch with<br>improved chevron. Sealed pouch<br>packaged in labeled carton with<br>Instructions for Use. | Catheter inserted in a plastic tube,<br>mounted on an insert card, and<br>sealed in a pouch. Sealed pouch<br>packaged in carton box along with<br>Instructions for Use. | |
| Sterile & Non-<br>pyrogenic? | | Yes | |
| Sterilization<br>Method | Ethylene Oxide (sustainable) | Ethylene Oxide | |
| Shelf Life | | 3 years | |
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## Non-Clinical Performance Testing
# Bench Testing
The modified Q Distal Access Catheter has been evaluated through design verification testing, which confirmed the device met the design specifications as summarized in Table 3 below.
| Table 3: Design Verification Testing | | | |
|--------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------|--|
| Test | Test Method Summary | Results | |
| Label Integrity | Device labels were evaluated to ensure labels are intact and<br>legible after environmental conditioning, distribution simulation<br>and aging. | Pass | |
| Bubble Leak | Device packaging was evaluated to detect gross leaks in<br>packaging. | Pass | |
| Pouch Seal<br>Strength | Pouch was evaluated for the mechanical strength of the seal. | Pass | |
| Coating<br>Particulate | The number and size of particles generated during simulated use<br>were measured. | Pass | |
| Dimensional<br>Verification | Dimensional specifications were verified to ensure device meets<br>all the requirements. | Pass | |
| Tip Inspection | Catheter tip was evaluated to ensure the complete retrieval of tip<br>during its removal. | Pass | |
| Surface Integrity | Device visually inspected to ensure surface is free of defects<br>that can cause tissue trauma. | Pass | |
| Heat shrink<br>Inspection | To ensure heat shrink identifier remains intact and legible after<br>environmental conditioning, distribution simulation and aging. | Pass | |
| Coating<br>Uniformity | To evaluate the devices for uniform coating. | Pass | |
| Simulate Use/<br>Compatibility | The catheter performance was evaluated when used in<br>conjunction with other devices used in standard procedures<br>without sustaining damage or kinks and without causing<br>damage to the other devices. | Pass | |
| Coating<br>Adhesion | To visually categorize the integrity of coating on the device. | Pass | |
| Push/Track | To ensure device is able to be tracked without kink under normal conditions in tortuous anatomy. | Pass | |
| Kink Resistance | The distal shaft of the device was evaluated for kink resistance when subjected to a bend radius of 1.0 cm. | Pass | |
| Liquid Leak Under Pressure | To ensure device does not exhibit leakage of liquid under a minimum pressure of 44 psi for a minimum of 30 seconds. | Pass | |
| Static Burst | To ensure device withstands a minimum pressure of 100 psi prior to burst. | Pass | |
| Tensile Strength - Push Wire | To ensure device meets the required tensile strength between the push wire and catheter body: 15 N pull force minimum. | Pass | |
| Tensile Strength - Distal Section | To ensure device meets the required tensile strength of the distal section of the shaft: 5N pull force minimum. | Pass | |
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## Biocompatibility
The Q Distal Access Catheter patient contacting materials are the same materials used in the currently marketed predicate MIVI Q Distal Access Catheter K192558 with the same patient contact classification. A summary of the additional biocompatibility testing conducted to support the device modifications is included in Table 4 below.
| Table 4: Summary of Biocompatibility Testing | | | |
|----------------------------------------------|-------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|
| Test | Test Method | Conclusion | Result |
| Cytotoxicity | Extracted with MEM with<br>10% FBS at 37°C<br>for 24 hours and<br>administered on mouse<br>fibroblast L929 cells. | Biological reactivity Grade 0 on the<br>test article after 48 hrs. incubation<br>with mouse fibroblast. The response<br>on the positive and negative control<br>article extracts confirmed the<br>suitability of the tests. The test article<br>(TA) is considered non-cytotoxic. | Pass |
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| Hemolysis<br>(Direct and Indirect) | ASTM F756, Standard<br>Practice for Assessment of<br>Hemolytic Properties of<br>Materials. | The test article in direct contact with<br>blood had a hemolytic index of 0.3%,<br>and the test article extract had a<br>hemolytic index of 0.2%. Both the test<br>article in direct contact with blood and<br>the test article extract were non-<br>hemolytic. | Pass |
|------------------------------------|--------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------|
|------------------------------------|--------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------|
### Sterilization
The modified O Distal Access Catheter in the new packaging is sterilized using Sustainable Ethylene Oxide (EO) sterilization process. Sterilization was performed in accordance with ISO 11135:2014 to qualify the reduced EO sterilization process developed by Steris AST which is an optimized cycle using less EO sterilant while still achieving the 10 ° sterility assurance level (SAL) as an acceptable means of sterilization.
The EO residual, limulus amoebocyte lysate (LAL), and bioburden testing were performed in accordance with standards listed below:
- ISO 10993-7 Biological Evaluation of Medical Devices Part 7: Ethylene Oxide ● Sterilization Residuals.
- The USP 24 chapter 85 "Bacterial Endotoxins Test" and FDA guidance, "Pyrogen and ● Endotoxins Testing: Questions and Answers, " June 2012.
### Shelf-life
The modified O Distal Access Catheter will be labelled with an expiration date of 3 years from the date of sterilization, which is same as for the predicate device K192558.
### Conclusions
The modified Q Distal Access Catheter has the same indications for use, principle of operation, and design concept as the currently marketed MIVI Q Distal Access Catheter predicate device. The technological differences between the subject device and the currently marketed predicate device include the catheter dimensions, increased compatibility range with the guide catheter/sheath, addition of the syringe and flush tool accessory components to the packaging configuration, packaging, sterilization, and product labeling updates. The subject device has been evaluated through risk analysis and testing. The differences do not raise new questions of safety or effectiveness. The testing verified the device met the design specifications. Based on the predicate comparison, risk assessment, and device testing information provided in this 510(k) submission, the subject device has been shown to be appropriate for its intended use and is therefore considered substantially equivalent to the predicate device.
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.