The Aventus Introducer Sheath is indicated to be inserted in the vasculature to provide a conduit for the insertion of endovascular devices while minimizing blood loss associated with such insertions.
Device Story
Aventus Introducer Sheath is a single-use, catheter-based device for minimally invasive vascular access and hemostasis management. It consists of a sheath and a flexible, tapered-tip dilator. The sheath features a metallic (stainless steel) reinforced polymeric shaft, a lubricious inner liner, a hydrophilic outer coating, and a radiopaque distal tip for fluoroscopic visualization. It includes a user-actuatable hemostasis valve operated by a single button to manage blood loss during device insertion. The device is used by clinicians in a clinical setting to facilitate the introduction of endovascular devices over a standard 0.035" guidewire. By providing a stable conduit and controlling hemostasis, the device assists in the safe delivery of endovascular therapies, potentially reducing procedural blood loss and facilitating smooth catheter navigation through patient vasculature.
Clinical Evidence
No clinical data provided. Substantial equivalence is supported by bench testing, including biocompatibility (ISO 10993-1), sterilization validation (ISO 14937, SAL 10^-6), shelf-life/packaging integrity, and comprehensive mechanical design verification (critical dimensions, kink radius, torque, tensile strength, leakage, lubricity, and simulated use).
Technological Characteristics
Catheter introducer; stainless steel reinforced polymeric shaft; hydrophilic coating; radiopaque distal tip; user-actuatable hemostasis valve; compatible with 0.035" guidewires. Sterilized per ISO 14937. Biocompatibility per ISO 10993-1. No electronics or software.
Indications for Use
Indicated for patients requiring vascular access for endovascular device insertion; provides conduit while minimizing blood loss.
Regulatory Classification
Identification
A catheter introducer is a sheath used to facilitate placing a catheter through the skin into a vein or artery.
{0}
FDA U.S. FOOD & DRUG ADMINISTRATION
April 13, 2026
Inquis Medical
Zachary Woodson
VP of Regulatory Affairs & Quality Assurance
1530 O'Brien Dr.
Suite A
Menlo Park, California 94025
Re: K260091
Trade/Device Name: Aventus Introducer Sheath
Regulation Number: 21 CFR 870.1340
Regulation Name: Catheter Introducer
Regulatory Class: Class II
Product Code: DYB
Dated: January 12, 2026
Received: January 12, 2026
Dear Zachary Woodson:
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 (the 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 available 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.
U.S. Food & Drug Administration
10903 New Hampshire Avenue
Silver Spring, MD 20993
www.fda.gov
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Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
Your device is also subject to, among other requirements, the Quality Management System Regulation (QMSR) (21 CFR Part 820), which includes, but is not limited to, ISO 13485 clause 7.3 (Design controls), ISO 13485 clause 8.3 (Nonconforming product), ISO 13485 clause 8.5.2 (Corrective action), and ISO 13485 clause 8.5.3 (Preventative action). Please note that regardless of whether a change requires premarket review, the QMSR requires device manufacturers to review and approve changes to device design and production (ISO 13485 clause 7.3 and ISO 13485 clause 7.5) and document changes and approvals in the Medical Device File (ISO 13485 clause 4.2.3).
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 Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reporting-combination-products); good manufacturing practice requirements as set forth in the Quality Management System Regulation (QMSR) (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rule"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance/unique-device-identification-system-udi-system.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 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-devices/medical-device-safety/medical-device-reporting-mdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medical-devices/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-devices/device-advice-comprehensive-regulatory-
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K260091 - Zachary Woodson
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assistance/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,
MISTI L. MALONE -S
Misti Malone, PhD
Assistant Director
DHT2C: Division of Coronary
and Peripheral Intervention Devices
OHT2: Office of Cardiovascular Devices
Office of Product Evaluation and Quality
Center for Devices and Radiological Health
Enclosure
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FORM FDA 3881 (8/23)
Page 1 of 1
PSC Publishing Services (301) 443-6740
EF
| DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration Indications for Use | Form Approved: OMB No. 0910-0120 Expiration Date: 07/31/2026 See PRA Statement below. |
| --- | --- |
| 510(k) Number (if known) K260091 | |
| Device Name | |
| Aventus Introducer Sheath | |
| Indications for Use (Describe) | |
| The Aventus Introducer Sheath is indicated to be inserted in the vasculature to provide a conduit for the insertion of endovascular devices while minimizing blood loss associated with such insertions. | |
| 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) | |
| CONTINUE ON A SEPARATE PAGE IF NEEDED. | |
| This section applies only to requirements of the Paperwork Reduction Act of 1995. *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.* | |
| The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to: Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff@fda.hhs.gov | |
| "An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number." | |
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INQUIS
MEDICAL
K260091
Aventus Introducer Sheath
510k Pre-Market Notification
Page 1 of 3
# 510(k) Summary
## I. SUBMITTER
Inquis Medical
1530 O'Brien Drive, Ste. A
Menlo Park, CA 94025
Tel: 888-526-7738
E-mail: info@inquismedical.com
Contact Person: Zachary Woodson, VP of Regulatory Affairs & Quality Assurance
Date Prepared: 13 March 2026
## II. DEVICE
Name of Device: Aventus Introducer Sheath
Common or Usual Name: Introducer Sheath
Classification Name: Catheter Introducer
Regulatory Class: Class II
Product Code: DYB
Regulation Number: 21 CFR 870.1340
## III. PREDICATE DEVICES
Predicate Device: Gore DrySeal Flex Introducer Sheath (K160254)
## IV. DEVICE DESCRIPTION
The Aventus Introducer Sheath is a catheter-based device designed for minimally invasive catheter access and hemostasis management. The Aventus Introducer Sheath is comprised of the sheath and the dilator, is single use only, and is provided sterile to the end user.
The Aventus Introducer Sheath is compatible with standard with 0.035" guidewires and includes an atraumatic radiopaque Distal Soft Tip. The Introducer Sheath assists the clinician in insertion of catheters as it includes a User-Actuatable Valve that operates with the push of a single button. The Introducer Sheath shaft incorporates a metallic reinforcement layer made of stainless steel, an inner liner and polymeric outer jacket, and includes a hydrophilic coating applied to the outside of the catheter shaft.
The Aventus Introducer Sheath is provided with a Dilator containing a flexible tapered tip to allow for a smooth transition of the Introducer Sheath into the vasculature of the patient over a standard .035" guidewire. The Dilator extrusion is radiopaque for ease of visibility under fluoroscopic imaging.
## V. INDICATIONS FOR USE
The Aventus Introducer Sheath is indicated to be inserted in the vasculature to provide a conduit for the insertion of endovascular devices while minimizing blood loss associated with such insertions.
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INQUIS
MEDICAL
K260091
Aventus Introducer Sheath
510k Pre-Market Notification
Page 2 of 3
# VI. COMPARISON OF TECHNOLOGICAL CHARACTERISTICS WITH THE PREDICATE DEVICE
The subject device, Aventus Introducer Sheath, is substantially equivalent to the predicate device: Gore DrySeal Flex Introducer Sheath cleared under K160254. The intended use of the subject device is the same as the predicate, namely providing a conduit for the insertion of endovascular devices while minimizing blood loss associated through way of a user-actuatable hemostasis valve.
The subject and predicate devices share the same technological characteristics in that both devices are single patient use, large bore Introducer Sheath shafts which have a hemostasis valve which can be opened and closed by the user. From a manufacturing standpoint, both devices utilize shafts made with metallic (stainless steel) reinforced polymeric jackets and lubricious liners, radiopaque features at the distal tip for fluoroscopic visualization, the use of stopcocks to direct the flow of fluids from side ports, flexible dilators with a tapered distal tip for ease of insertion into patient vasculature, and hydrophilic coating on the outside of the introducer sheath shaft.
# VII. PERFORMANCE DATA
The following performance data were provided in support of the substantial equivalence determination.
| Performance Testing | Data provided |
| --- | --- |
| Biocompatibility Testing | Biocompatibility testing was successfully completed in accordance with ISO 10993-1:2018 and the FDA Guidance re: Use of ISO-10993. Testing included:
• Cytotoxicity
• Sensitization
• Intracutaneous Reactivity
• Acute Systemic Toxicity
• Material Mediated Pyrogenicity
• Hemocompatibility (Hemolysis, Complement Activation, Partial Thromboplastin Time, Platelet Leukocyte Count)
This testing demonstrated the materials of the Aventus Introducer Sheath do not pose a risk of negative interaction with patients. |
| Sterilization | Sterilization testing was successfully completed in accordance with ISO 14937:2009 - Sterilization of health care products — General requirements for characterization of a sterilizing agent and the development, validation and routine control of a sterilization process for medical devices and demonstrated an SAL of 10^{-6} and per AAMI TIR28:2016(R)2020.
Bacterial endotoxins test (BET), a.k.a. Limulus amebocyte lysate (LAL) testing was conducted per current test guidelines: USP <85> Bacterial Endotoxin Test and AAMI ST72 Bacterial endotoxins-test methodologies, routine monitoring and alternatives to batch testing and confirmed that the System meets established pyrogen limit specifications. |
| Distribution, Packaging and Shelf-Life Testing | Distribution and packaging testing successfully demonstrated the integrity of the sterile barrier and preservation of the System's properties.
Shelf-life testing has demonstrated preservation of the System's properties for the labeled shelf-life. |
| Software Testing | N/A – No software present in this device. |
| Electrical Safety / EMC Testing | N/A – No electronics present in this device. |
| Performance Testing – Bench | Design verification testing confirmed physical and functional requirements were met. Specifically, the following was tested: |
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INQUIS
MEDICAL
K260091
Aventus Introducer Sheath
510k Pre-Market Notification
Page 3 of 3
| Performance Testing | Data provided |
| --- | --- |
| | • Critical Dimensions – IDs, ODs, and Lengths
• Functional Testing - Compatibility with Devices and Guidewires
• Radiodetectability
• Simulated Use
• Kink Radius / Tortuosity Testing
• Torque Testing
• Peak Tensile Force – Critical Junctions
• Dilator Hub to Valve Housing Tensile Strength
• Dilator Removal Force
• Catheter Advancement Force and Retraction Force
• System Freedom from Leakage
• Lubricity and Particulate Testing
• Usability |
| Performance Testing – Non-Clinical | N/A – No Animal Testing conducted in support of this submission in equivalence with the predicate device. |
## VIII. CONCLUSIONS
In conclusion, the intended use, indications for use, and technological characteristics of the Aventus Introducer Sheath are the same or equivalent to the predicate devices. Performance testing has demonstrated that the Aventus Introducer Sheath is substantially equivalent to the predicate device.
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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.
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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.
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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.
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7. Product codes and the regulations tree
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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.