RAIN Sheath Transradial is indicated to facilitate placing a catheter through the skin into a radial artery.
Device Story
RAIN Sheath Transradial is a vascular catheter introducer system used in hospital or catheterization laboratory settings by healthcare professionals. The system includes a sheath introducer, vessel dilator, guidewire (bare or hydrophilic), and access needle (bare or IV cannula). The sheath features a lubricious hydrophilic coating and a tapered dilator tip to facilitate atraumatic insertion into the radial artery. The hub includes a locking mechanism to secure the dilator to the sheath cannula during insertion. The device is single-use and sterile. By providing a low-profile, lubricious access point, the device enables clinicians to introduce catheters into the radial artery, minimizing tissue trauma and facilitating cardiovascular procedures.
Clinical Evidence
No clinical studies were performed. Substantial equivalence was supported by non-clinical bench testing, including biocompatibility (cytotoxicity, sensitization, irritation, systemic toxicity, pyrogenicity, hemocompatibility), sterilization validation (ISO 11135), and mechanical performance testing (ISO 11070, ISO 10555, ISO 11607).
{0}------------------------------------------------
Image /page/0/Picture/0 description: The image contains two logos. The logo on the left is the Department of Health & Human Services - USA logo. The logo on the right is the FDA logo, which stands for U.S. Food & Drug Administration. The FDA logo is in blue and white.
Cordis Corporation Ankita Phophalia Regulatory Affairs Project Manager 1820 McCarthy Boulevard Milpitas, California 95035
Re: K181592
Trade/Device Name: RAIN Sheath Transradial Regulation Number: 21 CFR 870.1340 Regulation Name: Catheter Introducer Regulatory Class: Class II Product Code: DYB Dated: June 15, 2018 Received: June 18, 2018
# Dear Ms. Ankita Phophalia:
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 requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part
{1}------------------------------------------------
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/CombinationProducts/GuidanceRegulatoryInformation/ucm597488.htm); good manufacturing practice requirements as set forth in the quality systems (QS) 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 http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice
(https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). 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 (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Finn E.
Donaldson -S
Digitally signed by Finn E. Donaldson -S
DN: c=US, o=U.S. Government, ou=HHS,
ou=FDA, ou=People,
0.9.2342.19200300.100.1.1=2000979673,
cn=Finn E. Donaldson -S
Date: 2018.08.15 07:26:59 -04'00'
for
Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
# Indications for Use
510(k) Number (if known) K181592
Device Name RAIN Sheath Transradial
Indications for Use (Describe)
RAIN Sheath Transradial is indicated to facilitate placing a catheter through the skin into a radial artery.
Type of Use (Select one or both, as applicable)
| <label><input checked="" type="checkbox"/> Prescription Use (Part 21 CFR 801 Subpart D)</label> |
|-------------------------------------------------------------------------------------------------|
| <label><input type="checkbox"/> Over-The-Counter Use (21 CFR 801 Subpart C)</label> |
## 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."
{3}------------------------------------------------
## 510(k) Summary
## I. SUBMITTER
Applicant: Cordis Corporation 14201 North West 60th Avenue Miami Lakes, Florida 33014 USA Establishment Reqistration: 1016427
Contact: Ankita Phophalia Cordis Corporation 1820 McCarthy Boulevard Milpitas, CA 95035 USA Tel: (408) 273-3228 Fax: (408) 955-0704
Date Prepared: June 15, 2018
II. DEVICE
Name of Device: RAIN Sheath™ Transradial Common Name: Vascular Catheter Introducer Classification Name: Introducer, Catheter (21 CFR 870.1340), Class II Product Code: DYB
## III. PREDICATE DEVICE
Terumo Glidesheath Slender® cleared on 11/21/2014 under K142183
Predicate device cited above has not been the subject of a recall.
## IV. DEVICE DESCRIPTION
RAIN Sheath™ Transradial is indicated to facilitate placing a catheter through the skin into a radial artery.
Each RAIN Sheath™ device consists of a sheath introducer, a vessel dilator (0.021" quidewire compatible), an IV cannula needle and/or a bare access needle, and a 45 cm 0.021" guidewire (either bare or hydrophilic). The device configurations with the hydrophilic guidewire contain only the IV cannula needle whereas device configurations with the bare wire contain only the bare needle.
The sheath introducer has a lubricious hydrophilic coating, a smooth shoulder transition to the dilator and low-profile outer diameters (OD). To provide an atraumatic transition between the dilator tip and the 0.021" mini guide wire, the RAIN Sheath™ dilator is tapered at the distal end and the inner diameter (ID) of the dilator has been optimized. The hub is overmolded to the dilator and includes a locking mechanism between the hub of the vessel dilator and the hub of the sheath cannula to facilitate insertion of the product while preventing the vessel
{4}------------------------------------------------
dilator from backing out of the cannula. RAIN Sheath™ device is available in sixteen (16) product configurations which differ based on French size and length, and the specific wire and needle included in the system, as indicated in the table below. It is offered in French sizes of 4F, 5F, 6F and 7F, with lengths of 10 cm and 16 cm. RAIN Sheath™ device is a single-use sterile device, sterilized by ethylene oxide.
RAIN Sheath™ device is for professional use in a hospital, catheterization laboratory, or other suitable healthcare facility only.
| Catalog Code | 0.021" Mini<br>Guidewire | Needle | French Size and<br>Length |
|--------------|--------------------------|-------------|---------------------------|
| 506410S | Bare | Bare needle | 4 F, 10 cm |
| 506416S | | | 4 F, 16 cm |
| 506510S | | | 5 F, 10 cm |
| 506516S | | | 5 F, 16 cm |
| 506610S | | | 6 F, 10 cm |
| 506616S | | | 6 F, 16 cm |
| 506710S | | | 7 F, 10 cm |
| 506716S | | | 7 F, 16 cm |
| 506410H | Hydrophilic | IV cannula | 4 F, 10 cm |
| 506416H | | | 4 F, 16 cm |
| 506510H | | | 5 F, 10 cm |
| 506516H | | | 5 F, 16 cm |
| 506610H | | | 6 F, 10 cm |
| 506616H | | | 6 F, 16 cm |
| 506710H | | | 7 F, 10 cm |
| 506716H | | | 7 F, 16 cm |
The materials of construction of the RAIN Sheath™ device components are as follows:
| RAIN Sheath™ Transradial Materials of Construction | | |
|----------------------------------------------------|-------------------------------------------------------------------------------------------------------|--------------------|
| Component | Materials | Patient<br>Contact |
| Sheath<br>Introducer | Nylon, Pebax, Barium Sulfate, color concentrate,<br>hydrophilic coating, PTFE, Polyethylene, Silicone | Direct<br>(≤ 24hr) |
| Dilator | Nylon, HDPE, Barium sulfate, color concentrate | Direct<br>(≤ 24hr) |
| Bare Wire | Stainless steel | Direct<br>(≤ 24hr) |
| Hydrophilic<br>Wire | Nitinol, Tungsten, hydrophilic coating | Direct<br>(≤ 24hr) |
| Bare Needle | Stainless steel, Polyethylene | Direct<br>(≤ 24hr) |
| IV Cannula<br>Needle | Stainless steel, MABS, Polypropylene, FEP | Direct<br>(≤ 24hr) |
{5}------------------------------------------------
## V. INDICATIONS FOR USE
RAIN Sheath™ Transradial is indicated to facilitate placing a catheter through the skin into a radial artery.
The Indications for Use statement for RAIN Sheath™ is identical to that of the predicate device.
# VI. COMPARISON OF TECHNOLOGICAL CHARACTERISTICS WITH THE PREDICATE DEVICE
RAIN Sheath™ device and the predicate device facilitate low profile access into the radial artery using the same fundamental mechanism of action. Both devices have introducer sheaths with hydrophilic coating which imparts lubricity and facilitates ease of insertion of the device. The dilator component of each device supports the sheath in which it is inserted and dilates the vessel during radial insertion. The introducer sheath with hydrophilic coating and the tapered dilator which provides a smooth transition between the guidewire and the introducer sheath facilitates atraumatic entry into the radial artery over a guide wire and minimizes tissue damaqe.
RAIN Sheath™ has the following similarities to the predicate device:
- Same intended use ●
- Same principle of operation ●
- Same mechanism of action ●
- Same method of sterilization and sterility assurance level ●
- Same biocompatibility classification ●
- Biocompatible for intended use ●
- Labeled non-pyrogenic
- Similar materials ●
- . Similar components
- Similar device dimensions ●
- Similar packaging configuration
- Similar compatibility with other devices used in radial access procedures ●
Based on a thorough analysis of technological characteristics, including design, materials, dimensions, mechanism of action, and clinical use, the RAIN Sheath device is substantially equivalent to the predicate device.
## VII. PERFORMANCE DATA
The performance data described below were provided in support of the substantial equivalence determination.
{6}------------------------------------------------
# Biocompatibility Testing
RAIN Sheath™, like the predicate, is an externally communicating device with limited contact duration (≤ 24 hours) with circulating blood. Biocompatibility testing was performed for RAIN Sheath™ in accordance with FDA Guidance, Use of International Standard ISO 10993-1, Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process (June 2016) and ISO 10993-1:2009/Cor 1:2010, Biological evaluation of medical devices – Part 1: Evaluation and testing within a risk management process. On the basis of the testing listed below, RAIN Sheath™ is biocompatible for its intended use:
- Cytotoxicity .
- Sensitization .
- Irritation .
- Systemic toxicity ●
- Pyrogenicity ●
- Hemocompatibility .
# Sterilization
The sterilization cycle used to sterilize RAIN Sheath™ was validated per ISO 11135:2014 Sterilization of health-care products - Ethylene oxide -Requirements for the development, validation and routine control of a sterilization process for medical devices to provide a sterility assurance level (SAL) of 10-6.
Ethylene oxide and ethylene chlorohydrin residuals meet requirements for limited exposure devices (contact < 24 hours) in accordance with ISO 10993-7:2008, Biological evaluation of medical devices – Part 7: Ethylene oxide sterilization residuals. The levels of residuals will not exceed 4 mg EO /device or 9 mg ECH/device.
# Bench Testing
The substantial equivalence of the RAIN Sheath™ Transradial to the predicate device has been demonstrated through data collected during non-clinical design verification and validation testing. The following testing was successfully performed or leveraged for the RAIN Sheath™ device per applicable sections of the indicated standards and/or validated internal test methods:
- Sheath Introducer ISO 11070:2014, USP 788 and internal test methods ●
- Dilators ISO 11070:2014 and internal test methods .
- IV Cannula Needle ISO 10555-1:2013 and ISO 10555-5:2013 .
- Stainless Steel Needle ISO 11070:2014 .
- Hydrophilic Coated Wire - ISO 11070:2014
- Stainless Steel Wire ISO 11070:2014 ●
- Packaging integrity ISO 11607-1:2009/A1:2014 and ISO 11607-2:2006 .
{7}------------------------------------------------
The passing results for the testing provide reasonable assurance that the subject device has been designed to meet its intended use.
## Clinical Studies
No clinical studies were deemed necessary to support substantial equivalence. Appropriate verification and validation of the device requirements were achieved based on the similarities of the subject device to the predicate and from the results of bench testing.
## VIII. CONCLUSIONS
The information presented in this Premarket Notification demonstrates the following for the RAIN Sheath™ Transradial:
- RAIN Sheath™ has a legally-marketed predicate ●
- RAIN Sheath™ has the same Intended Use as the predicate .
- RAIN Sheath™ incorporates the same fundamental technology as the ● predicate
- Accepted scientific methods and international standards were used to . evaluate substantial equivalence of the RAIN Sheath™ device relative to the predicate
- . Performance characteristics of the RAIN Sheath™ device are equivalent to the predicate device
On the basis of the intended use, design, performance characteristics and nonclinical performance testing, and of detailed comparisons to the legally marketed predicate device, it is concluded that the RAIN Sheath™ Transradial is appropriate for its intended use and is substantially equivalent to Glidesheath Slender®.
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
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.