K143563 · Inari Medical, Inc. · QEW · Feb 3, 2015 · Cardiovascular
Device Facts
Record ID
K143563
Device Name
Infusion Aspiration Catheter System
Applicant
Inari Medical, Inc.
Product Code
QEW · Cardiovascular
Decision Date
Feb 3, 2015
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.5150
Device Class
Class 2
Attributes
Therapeutic, 3rd-Party Reviewed
Indications for Use
The Infusion Aspiration Catheter System consists of the Infusion Wire Catheter, Aspiration Guide Catheter, and Retraction Aspirator Device. The Infusion Aspiration Catheter System is indicated for: -The non-surgical removal of emboli and thrombi from blood vessels. -Injection, infusion, and/or aspiration of contrast media and other fluids into or from a blood vessel. The Infusion Aspiration Catheter System is intended for use in the peripheral vasculature.
Device Story
System comprises Infusion Wireform Catheter, Aspiration Guide Catheter, and hand-lever operated Retraction Aspirator Device. Used in peripheral vasculature to remove emboli/thrombi. Procedure: Guide catheter advanced over 0.035" guidewire to location proximal to obstruction; dilator replaced by Infusion Wireform Catheter; wireform disks deployed distal to obstruction by retracting delivery catheter. Retraction Aspirator Device facilitates simultaneous withdrawal of wireform catheter into guide catheter and aspiration of fluids via vacuum syringe. Device disrupts/removes obstructing material. Operated by clinicians. Output is physical removal of thrombus/emboli and fluid management. Benefits include restoration of blood flow via non-surgical intervention.
Clinical Evidence
No clinical data. Evidence includes bench testing (ISO 10555-1, ISO 594-1/2, ISO 11607-1/2) covering mechanical integrity, leakage, tensile strength, and biocompatibility (ISO 10993-1). Acute safety and performance evaluated in a bovine model.
Technological Characteristics
System includes Nitinol wireform disks and thermoplastic polymer catheter shafts. 20 Fr Guide Catheter. Sterilized via ethylene oxide. Shelf life 6 months. No software or electronic components.
Indications for Use
Indicated for non-surgical removal of emboli and thrombi from peripheral blood vessels and for injection, infusion, or aspiration of contrast media and other fluids in patients requiring such interventions.
Regulatory Classification
Identification
An embolectomy catheter is a balloon-tipped catheter that is used to remove thromboemboli, i.e., blood clots which have migrated in blood vessels from one site in the vascular tree to another.
Predicate Devices
Genesis Medical Interventional F.A.S.T. System (K040010)
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
February 3, 2015
Inari Medical, Inc. c/o Mark Job Regulatory Technical Services LLC 1394 25th Street NW Buffalo, MN 55313
Re: K143563
Trade/Device Name: Infusion Aspiration Catheter System Regulation Number: 21 CFR 870.5150 Regulation Name: Embolectomy Catheter Regulatory Class: Class II Product Code: DXE Dated: December 2, 2014 Received: December 16, 2014
Dear Mr. Job:
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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forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education 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. 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 Industry and Consumer Education 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.
Sincerely yours,
# Bram D. Zuckerman -S
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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## Indications for Use
510(k) Number (if known)
Device Name Infusion Aspiration Catheter System
Indications for Use (Describe)
The Infusion Aspiration Catheter System consists of the Infusion Wire Catheter, Aspiration Guide Catheter, and Retraction Aspirator Device. The Infusion Aspiration Catheter System is indicated for:
-The non-surgical removal of emboli and thrombi from blood vessels. -Injection, infusion, and/or aspiration of contrast media and other fluids into or from a blood vessel.
The Infusion Aspiration Catheter System is intended for use in the peripheral vasculature.
Type of Use (Select one or both, as applicable)
2 Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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Image /page/3/Picture/0 description: The image contains the logo for Inari Medical. The logo features a stylized purple circle with three curved orange lines emanating from the left side. To the right of the circle is the word "INARI" in large, bold, purple letters. Below "INARI" is the word "MEDICAL" in smaller, gray letters.
#### 5 510(K) SUMMARY
| Date prepared | November 30, 2014 |
|---------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Name | Inari Medical, Inc.<br>8 Argonaut, Suite 100<br>Aliso Viejo, CA 92656<br>949.598.0300 x114 |
| Contact person | Eben Gordon<br>Vice President, Regulatory Affairs & Quality Assurance |
| Trade name | Infusion Aspiration Catheter System |
| Common name | Embolectomy catheter |
| Regulation Name | Embolectomy catheter |
| Classification number | 21 CFR 870.5150 |
| Product code | DXE |
| Regulatory class | II |
| Predicate devices | Genesis Medical Interventional F.A.S.T. System (K040010)<br>Fogarty Thru-Lumen Embolectomy Catheter (K892410)<br>Fogarty Venous Embolectomy Catheter (510[k] unknown) |
| Description | The Infusion Wireform Catheter consists of a single lumen Delivery Catheter<br>containing a second internal catheter. The internal Wireform Catheter has a<br>hollow flexible shaft with self-expanding wireform disks attached to its distal end.<br>The wireform disks are available in 3 sizes for treatment of vessels with diameter<br>of 6-10 mm, 11-14 mm, or 15-18 mm. |
| | The Aspiration Guide Catheter is introduced over a previously placed 0.035"<br>exchange length guidewire. A dilator compatible with the 0.035" guidewire is<br>provided for the Guide Catheter to assist in its advancement. |
| | The Dilator/Guide Catheter assembly is advanced in the patient's vasculature to a<br>location proximal of the obstruction. The dilator is withdrawn and replaced with<br>the Infusion Wireform Catheter which is advanced distal to the obstruction. The<br>wireform disks are deployed by retracting Delivery Catheter. |
| | By aspiration and withdrawal of the Infusion Wireform Catheter into the Guide<br>Catheter, the obstructing material may be disrupted or removed. |
| | The Retraction Aspirator Device is available to facilitate the simultaneous<br>aspiration and withdrawal of the Infusion Wireform Catheter into the Guide<br>Catheter. The hand-lever operated Retraction Aspirator Device is fitted with a |
| | vacuum syringe and collection container. Operating the Retraction Aspirator<br>Device lever simultaneously retracts the Infusion Wireform Catheter into the<br>Guide Catheter and aspirates fluids. |
| Indications for use | The Infusion Aspiration Catheter System consists of the Infusion Wireform<br>Catheter, Aspiration Guide Catheter, and Retraction Aspirator Device. The<br>Infusion Aspiration Catheter System is indicated for: |
| | ● The non-surgical removal of emboli and thrombi from blood vessels. |
| | ● Injection, infusion, and/or aspiration of contrast media and other fluids<br>into or from a blood vessel. |
| | The Infusion Aspiration Catheter System is intended for use in the peripheral<br>vasculature. |
| Summary of<br>substantial equivalence | The Infusion Aspiration Catheter System and the predicate devices have the same<br>intended use: removal of obstructing material (including emboli and thrombi)<br>from blood vessels. The Indications for Use of the Infusion Aspiration Catheter<br>System is a subset of that of the F.A.S.T. System. The F.A.S.T. System has<br>additional uses in synthetic grafts and temporary blood vessel/graft occlusions.<br>The Fogarty Thru-Lumen Embolectomy Catheter ("FTLEC") is indicated for<br>vessels in the arterial system while the Fogarty Venous Embolectomy Catheter is<br>indicated for the venous system. The F.A.S.T., FTLEC, and Fogarty Venous<br>Thrombectomy Catheter are also indicated for temporary occlusion of blood<br>vessels. |
| | Lacking temporary use in vessel occlusions and synthetic grafts does not affect<br>the safety or effectiveness of the Infusion Aspiration Catheter System when used<br>as labeled. |
| | The principle of operation is the same for Inflation Aspiration Catheter and<br>F.A.S.T. Systems - expanding Nitinol braids are withdrawn through the vessel<br>obstruction to restore blood flow. While the FTLEC and Fogarty Venous<br>Thrombectomy Catheters are withdrawn through the vessel obstruction, they<br>differ in that it is an elastomeric balloon that is being withdrawn. In all cases, the<br>principle of operation is the same. |
| | The Infusion Aspiration Catheter and the F.A.S.T. Systems have similar materials<br>of construction. Both use Nitinol metal features to remove the obstruction and<br>have thermoplastic polymer catheter shafts. Again, they differ from the FTLEC<br>which has a latex balloon. The effect on the vessel caused by the Inflation<br>Aspiration Catheter System was demonstrated to be similar to that of the FTLEC<br>in the study entitled: A GLP Evaluation of the Inari Embolectomy Device in a<br>Bovine Model. The Infusion Aspiration Catheter and the F.A.S.T. Systems carry<br>the same hazard of a broken or protruding Nitinol wire causing vessel puncture.<br>To mitigate this possibility, the Wireform Catheter is 100% inspected for broken<br>and protruding Nitinol braids during manufacture. |
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The range of vessel diameter treated for the Infusion Aspiration Catheter System
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(6 mm - 18 mm) is within the combined ranges of the predicate devices (5 mm -19 mm).
The Infusion Aspiration Catheter System is provided with a 20 Fr Guide Catheter. The F.A.S.T. System, FTLEC, and Fogarty Venous Thrombectomy Catheters are used with commercially available guide catheters which can be smaller than 20 Fr. The larger Infusion Aspiration System's guide catheter limits the range of vessels it can be used in. The restriction of vessels sizes does not affect the effectiveness of the Infusion Aspiration Catheter System as demonstrated in the consistent removal of simulated thrombus from the simulated vessels in testing.
### Non-Clinical Testing
In alignment with the Design Failure Modes and Effects Analysis, verification and validation testing was identified to support the safety and effective of the Infusion Aspiration Catheter System.
This testing demonstrated compliance with relevant standards (e.g. ISO 10555-1, ISO 594-1/2, etc.) and product specifications. These tests included:
- . Package integrity and accelerated aging inspection
- Pouch bubble emission
- Pouch peel, seal strength
- Visual and dimensional inspections ●
- Guidewire compatibility
- Snap fit, Dilator Luer to Guide Catheter hemostasis valve
- System flexibility and torque
- . Retraction force of Wireform Catheter into Delivery Catheter
- . Deployment force of Wireform Catheter from Delivery Catheter
- Guide Catheter/Dilator kink radius
- Retraction force of Wireform Catheter into Guide Catheter
- Leakage testing, hemostasis valves with guidewire
- Guide Catheter/Infusion Wireform Catheter kink radius
- Liquid leakage under pressure (300 kPa)
- Leakage testing, devices with Guide Catheter hemostasis valve ●
- Test of conical fittings with 6% Luer taper
- Air leakage into hub assembly during aspiration
- Suction volume, RA device
- Retraction, RA device (15 cycles) ●
- . Tube set, leakage
- . Suction and exhaust check valve testing
- Power injection testing
- Determination of flow rate through catheter
- Tensile strength
- Corrosion resistance
- Particulate matter ●
- Burst Pressure
- Simulated Use Tracking
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Biocompatibility testing in accordance with ISO 10993-1:
- . MEM elution
- . Guinea pig maximization sensitization
- Intracutaneous toxicity ●
- Acute systemic toxicity
- Material mediated pyrogen ●
- Hemolysis, direct contact and extract method
- . Complement activation
- Thrombogenicity
- Mutagenicity
The shelf life of the Infusion Aspiration Catheter System is six (6) months from the date of manufacture based on accelerated aging studies. Verification testing was conducted on sterilized (ethylene oxide), accelerated-aged devices to support the 6 months shelf life.
Package integrity testing was conducted according to ISO 11607-1/2 guidelines. These tests included:
- Pouch bubble emission
- Pouch peel, seal strength
Acute evaluation of the safety and performance of the Inari Infusion Wireform Catheter, Aspiration Guide Catheter, and the Retraction Aspirator Device were successfully performed in a bovine model.
Clinical testing was not required for the determination of substantial equivalence.
### Conclusion
Test results demonstrated that all acceptance criteria were met, and, therefore, the device conforms to expected device performance and intended use.
Based upon the technology, materials, intended use, non-clinical testing, and animal study results, it is concluded that the Infusion Aspiration Catheter System is substantially equivalent to the F.A.S.T. System, Fogarty Thru-Lumen Embolectomy Catheter, and Fogarty Venous Thrombectomy Catheter. These results demonstrate that the Infusion Aspiration Catheter System is as safe, as effective, and performs as well as or better than the legally marketed predicate devices identified above.
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.