K141408 · Merit Medical Systems, Inc. · FGE · Nov 26, 2014 · Gastroenterology, Urology
Device Facts
Record ID
K141408
Device Name
RESOLVE BILIARY LOCKING DRAINAGE CATHETER
Applicant
Merit Medical Systems, Inc.
Product Code
FGE · Gastroenterology, Urology
Decision Date
Nov 26, 2014
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 876.5010
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The ReSolve® Biliary Drainage Catheter with locking pigtail and hydrophilic coating is used for drainage of bile within the biliary system.
Device Story
ReSolve Biliary Locking Drainage Catheter is a single-lumen polyurethane catheter used for biliary drainage. Device features a locking pigtail mechanism, hydrophilic coating to reduce friction, and radiopaque marker band for placement. Includes accessories: metal/flexible stiffening cannulas, pigtail straightener, repositioning tool, and dead-end cap. Used by clinicians in clinical settings for percutaneous biliary drainage via over-the-wire technique. Catheter position established; pigtail formed by retracting internal suture; hub locks suture to maintain shape. Repositioning tool allows unlocking for adjustment or replacement. Printed shaft markings assist depth assessment. Device facilitates bile flow, relieving biliary obstruction. Supplied sterile, single-use.
Clinical Evidence
Bench testing only. No clinical data provided. Performance testing included cyclic fatigue, tensile testing, flow testing, kink testing, tip penetration, hub leak/ingress, guide wire passage, and hydrophilic coating adherence. Biocompatibility testing included cytotoxicity, sensitization, irritation, acute systemic toxicity, pyrogenicity, genotoxicity, and implantation per USP standards.
Technological Characteristics
Single-lumen polyurethane catheter; 8.5F-14F sizes; 40cm length. Features hydrophilic coating, locking pigtail mechanism, and radiopaque marker band. Includes metal/flexible stiffening cannulas, pigtail straightener, and repositioning tool. Sterilized, single-use. Complies with USP <151> (pyrogen) and USP <661> (plastics).
Indications for Use
Indicated for patients requiring biliary drainage within the biliary system.
Regulatory Classification
Identification
A biliary catheter and accessories is a tubular flexible device used for temporary or prolonged drainage of the biliary tract, for splinting of the bile duct during healing, or for preventing stricture of the bile duct. This generic type of device may include a bile collecting bag that is attached to the biliary catheter by a connector and fastened to the patient with a strap.
Special Controls
*Classification.* Class II (special controls). The device, when it is a bile collecting bag or a surgical biliary catheter that does not include a balloon component, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 876.9.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
November 26, 2014
Merit Medical Systems, Inc. Glenn Norton Vice President, Regulatory Affairs 1600 West Merit Parkway South Jordan, UT 84095
Re: K141408
> Trade/Device Name: ReSolve® Biliary Locking Drainage Catheter Regulation Number: 21 CFR 876.5010 Regulation Name: Gastroenterology and Urology Regulatory Class: Class II Product Code: FGE Dated: October 27, 2014 Received: May 28, 2014
Dear Clea Feight:
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
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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 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,
# Herbert P. Lerner -S
for
Benjamin R. Fisher, Ph.D. Director Division of Reproductive, Gastro-Renal, and Urological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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### Indications for Use
510(k) Number (if known)
K141408
Device Name ReSolve Biliary Locking Drainage Catheter
Indications for Use (Describe)
The ReSolve Biliary Drainage Catheter with locking pigtail and hydrophilic coating is used for drainage of bile within the biliary system.
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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## 5.0 510(k) Summary
| General Provisions | Submitter Name: | Merit Medical Systems, Inc. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------|
| | Address: | 1600 West Merit Parkway<br>South Jordan, UT 84095 |
| | Telephone Number: | (801) 826-4019 |
| | Fax Number: | (801) 316-4853 |
| | Contact Person: | Clea Feight |
| | Date of Preparation: | May 27, 2014 |
| | Registration Number: | 1721504 |
| Subject Device | Trade Name: | ReSolve® Biliary Locking Drainage<br>Catheter |
| | Common/Usual Name: | Biliary Drainage Catheter |
| | Classification Name: | Catheter, Biliary, Diagnostic |
| Predicate Device | Trade Name: | ReSolve® Biliary Locking Drainage<br>Catheter |
| | Classification Name: | Catheter, Biliary, Diagnostic |
| | Premarket Notification: | K121832 |
| | Manufacturer: | Merit Medical Systems, Inc. |
| Classification | Class II<br>21 CFR § 876.5010<br>FDA Product Code: FGE<br>Review Panel: Gastroenterology and Urology | |
| Intended Use | The ReSolve® Biliary Drainage Catheter with locking pigtail and<br>hydrophilic coating is used for drainage of bile within the biliary<br>system. | |
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The ReSolve® Biliary Locking Drainage Catheter consists of single lumen tubing with 17 to 18 drainage holes (depending on the French size of the catheter) and a single dedicated suture hole. One of the drainage holes doubles as a suture hole. The tubing is made from a polyurethane material. A hydrophilic coating reduces entry site/catheter friction during placement. The catheter is offered in two drainage hole configurations. The RBC (long) configuration has a lesion gap (distance between the proximal pigtail and the distal shaft drainage hole) of 5 cm. The RBDC (standard) has a lesion gap of 2 cm. The components of the catheter allow initial placement using an over-the-wire technique. These include a metal stiffening cannula, flexible stiffening cannula, pigtail straightener and repositioning tool. The hubs of the flexible and metal stiffening cannula are color coded for catheter French size identification. The pigtail straightener is provided to assist in feeding the guide wire through the catheter. A dead end cap is included to prevent fluid from exiting the catheter after placement. Once the catheter position is established in the area to be drained, the Device Description pigtail is formed by retracting a suture which is looped from the hub to catheter tip then back to the hub. The hub incorporates a suture locking mechanism to retain the distal pigtail shape. It may be unlocked using the repositioning tool to allow repositioning or replacement of the catheter. A single radiopaque marker band is located proximal to the most proximal drainage hole to assist in accurate placement of the drainage holes in the biliary duct. In addition, the shaft of the catheter is printed with markings for the clinician to determine how deep the catheter is in the patient. The catheter is available in the same sizes 8.5F, 10F, 12F, and 14F with the same useable length, 40 cm, as the predicate device. The ReSolve® Biliary Locking Drainage Catheter is a single use device that is supplied sterile and non-pyrogenic. The device is marketed with the following components, depending on the product configuration: StayFIX® or Revolution™ catheter securement device.
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| | The technological characteristics of the subject ReSolve® Biliary<br>Locking Drainage Catheter are substantially equivalent to those<br>of the predicate device. The subject device has the same basic<br>design as the predicate device in that it consists of single lumen<br>tubing with drainage holes, hub, and suture locking mechanism<br>and is provided with a metal stiffening cannula, flexible stiffening<br>cannula, pigtail straightener, repositioning tool and dead end<br>cap. The ReSolve® Biliary Locking Drainage Catheter is similar<br>in clinical use and function to the predicate ReSolve® Biliary<br>Locking Drainage Catheter. |
|-----------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Comparison to<br>Predicate Device | The main difference is in the catheter shaft material and that the<br>subject device is coated with a different hydrophilic coating on<br>the outer surface of the catheter tubing. In addition, printed<br>depth markings have been added to the catheter shaft and the<br>location of the drainage holes has been modified to standardize<br>the gap between the pigtail and the shaft holes (RBC versus<br>RBDC) across all French sizes with adjustment of the marker<br>band location to account for this change. The geometry of the<br>tip has been modified slightly to have a longer taper. |
| | Minor changes have also been made to the colorant formulation<br>(color additives) used in molding three of the accessory<br>components of the device due to discontinuation notices from<br>suppliers. |
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- United States Pharmacopeia Section <151>, USP 36 . Pyrogen Testing, 2013-12-01
- o United States Pharmacopeia Section <661>, USP 36 Physiochemical Tests for Plastics
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| Safety &<br>Performance Tests<br>cont.<br>Performance Testing-Bench Cyclic Fatigue Testing Material Improvement Chemical Testing Optical Density/Radio-detectability Curve Shape Visual Product Dimensions – Useable Length Product Dimensions – Marker Band to Pigtail Distance Product Dimensions – Distal Shaft Hole to Pigtail Distance Marker Band/Proximal Hole Location Punched Holes Orientation and Number of Holes Hydrophilic Coating Coverage/Adherence and Length Guide Wire Passage Test Flow Testing Pigtail Pull Test Tip Penetration Test Cannula and Stiffener Insertion Test Tip Geometry Drainage Hole Tensile Test Catheter Collapse Tubing Kink Testing Hub Leak/Liquid Ingress Test Hub Tensile Test Marker Band Transition Ink Adherence 14F Metal and Plastic Stiffening Cannula Hub Tensile Test and Visual Inspection Pigtail Straightener Test<br>Biocompatibility Cytotoxicity Sensitization Irritation Acute Systemic Toxicity Pyrogenicity Genotoxicity Implantation Chemical Characterization | Summary of<br>Substantial<br>Equivalence<br>Based on the indications for use, design, safety and<br>performance testing, the subject ReSolve® Biliary Locking<br>Drainage Catheter meets the requirements that are considered<br>essential for its intended use and is substantially equivalent to<br>the predicate device, the ReSolve® Biliary Locking Drainage<br>Catheter, K131832. |
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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.