FLASH Ostial System OTW-6.0mm x 12mm x 80cm, FLASH Ostial System OTW-6.0mm x 12mm x 135cm, FLASH Ostial System OTW-7.0mm x 12mm x 80cm, FLASH Ostial System OTW-7.0mm x 12mm x 135cm
FLASH Ostial System OTW-6.0mm x 12mm x 80cm, FLASH Ostial System OTW-6.0mm x 12mm x 135cm, FLASH Ostial System OTW-7.0mm x 12mm x 80cm, FLASH Ostial System OTW-7.0mm x 12mm x 135cm
Applicant
Ostial Corporation
Product Code
LIT · Cardiovascular
Decision Date
May 8, 2015
Decision
SESE
Submission Type
Special
Regulation
21 CFR 870.1250
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Flash Ostial System OTW is indicated for Percutaneous Transluminal Angioplasty in the peripheral vasculature at aorto-ostial locations, including iliac, renal and carotid arteries. This device is also indicated for post-dilatation of balloon expandable stents in the peripheral vasculature.
Device Story
The FLASH Ostial System OTW is an over-the-wire (OTW) angioplasty balloon catheter designed for use in peripheral vasculature. It features a dual-balloon design: a compliant proximal balloon that anchors the device to prevent distal migration during angioplasty, and a semi-compliant distal balloon for dilating de novo lesions and expanding stents. The device is compatible with 0.035" guidewires and 6F guiding sheaths. It is operated by a physician in a clinical setting. By providing stable positioning at ostial locations, the device allows for precise angioplasty or stent post-dilatation, potentially improving procedural outcomes and reducing the risk of balloon slippage.
Clinical Evidence
Bench testing only. No clinical data provided. Testing included biocompatibility (ISO 10993-1, MEM Elution, Hemolysis, Complement Activation, Thromboresistance, Pyrogenicity, Sensitization, Acute Systemic Injection, Intracutaneous Reactivity) and performance bench testing (crossing profile, burst pressure, compliance, inflation/deflation time, fatigue, bond/pull/torque strength, simulated use, flexibility, kink resistance, and radiopacity).
Technological Characteristics
Over-the-wire (OTW) angioplasty balloon catheter; 0.035" guidewire compatible; 6F guiding sheath compatible; dual-balloon design (compliant proximal, semi-compliant distal); materials evaluated per ISO 10993-1; radiopaque marker bands; lengths 80cm or 135cm.
Indications for Use
Indicated for patients requiring percutaneous transluminal angioplasty in peripheral vasculature at aorto-ostial locations (iliac, renal, carotid arteries) or post-dilatation of balloon-expandable stents.
Regulatory Classification
Identification
A percutaneous catheter is a device that is introduced into a vein or artery through the skin using a dilator and a sheath (introducer) or guide wire.
{0}------------------------------------------------
Image /page/0/Picture/1 description: The image shows the seal of the U.S. Department of Health & Human Services. The seal features a stylized caduceus, a symbol often associated with medicine and healthcare, with three intertwined snakes around a staff. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the caduceus. The seal is black and white.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
May 8, 2015
Ostial Corporation Mr. Jake Wolenberg Ouality Assurance and Regulatory Affairs Manager 1221 Innsbruck Drive Sunnyvale, California 94089
#### Re: K150946
Trade/Device Name: Flash Ostial System OTW - 6.0mm x 12mm x 80cm, Flash Ostial System OTW - 6.0mm x 12mm x 135cm, Flash Ostial System OTW - 7.0mm x 12mm x 80cm, Flash Ostial System OTW - 7.0mm x 12mm x 135cm Regulation Number: 21 CFR 870.1250 Regulation Name: Percutaneous Catheter Regulatory Class: Class II Product Code: LIT Dated: April 7, 2015 Received: April 8, 2015
Dear Mr. Wolenberg:
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
{1}------------------------------------------------
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 devicerelated 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/ResourcesforYou/Industry/default.htm. 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 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,
Kenneth J. Cavanaugh -S
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) K150946
Device Name FLASH Ostial System OTW
#### Indications for Use (Describe)
The FLASH Ostial System OTW is indicated for Percutaneous Transluminal Angioplasty in the peripheral vasculature at aorto-ostial locations, including iliac, renal and carotid arteries. This device is also indicated for post-dilatation of balloon expandable stents in the peripheral vasculature.
| Type of Use (Select one or both, as applicable) | |
|-------------------------------------------------------------------------------------|----------------------------------------------------------------------------------|
| <div> <span> × Prescription Use (Part 21 CFR 801 Subpart D) </span> </div> | <div> <span> Over-The-Counter Use (21 CFR 801 Subpart C) </span> </div> |
#### 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}------------------------------------------------
Image /page/3/Picture/0 description: The image contains the logo for Ostial Corporation. The logo consists of a stylized, circular graphic to the left of the company name. The graphic is made up of interwoven lines in light blue and gray. The text "Ostial" is in a dark gray sans-serif font, with "corporation" in a smaller, light blue font underneath, underlined with a light blue line.
Ostial Corporation 510(k) Notification: FLASH Ostial System OTW
# 510(k) Summary FLASH Ostial System OTW - Product Line Extension
## A. Submitter Information
Submitter's Name: Address:
Telephone: Fax: Email: Contact Person: Date of Preparation:
#### B. Subject Device
Proprietary Name: Common/Usual Name: Classification Name: Product Code:
#### C. Predicate Device Name
Proprietary Name: 510(k) #'s: Common/Usual Name: Classification Name: Product Code:
Ostial Corporation 1221 Innsbruck Drive Sunnyvale, CA 94089 408-541-1006 408-541-1007 jwolenberg@ostialcorp.com Jake Wolenberg April 7, 2015
FLASH Ostial System OTW Balloon Catheter Catheter, Angioplasty, Peripheral, Transluminal LIT per 21 C.F.R. 870.1250
FLASH Ostial System OTW K133861 Balloon Catheter Catheter, Angioplasty, Peripheral, Transluminal LIT per 21 C.F.R. 870.1250
#### D. Device Description:
The Flash Ostial System OTW is designed for the dilatation of stenotic ostial lesions in the peripheral vasculature. The FLASH Ostial System OTW is a 0.035" guidewire-compatible, over the wire (OTW) angioplasty balloon catheter with proximal anchoring and a working length of either 80cm or 135cm. All device sizes in the Flash Ostial System OTW product family are designed to be compatible with 6F guiding sheaths. The FLASH Ostial System OTW uses a dual balloon design that features a compliant proximal balloon, which prevents distal migration of the balloon during angioplasty. The second semi-compliant higher-pressure distal balloon allows for luminal dilatation of de novo lesions and post deployment stent expansion.
#### E. Intended Use:
The Flash Ostial System OTW is indicated for Percutaneous Transluminal Angioplasty in the peripheral vasculature at aorto-ostial locations, including iliac, renal and carotid arteries. This device is also indicated for post-dilatation of balloon expandable stents in the peripheral vasculature.
{4}------------------------------------------------
Image /page/4/Picture/1 description: The image contains the logo for "Ostial corporation". The logo consists of a stylized, geometric shape resembling a flower or star with rounded petals, rendered in light blue and gray. To the right of the geometric shape, the word "Ostial" is written in a gray, sans-serif font. Below "Ostial", the word "corporation" is written in a smaller, light blue font, underlined with a thin, light blue line.
## F. Summary of Similarities and Differences in Technological Characteristics, Performance and Intended Use:
The FLASH Ostial System OTW device sizes that are the subject of this Special 510(k) are a line extension of the FLASH Ostial System OTW product line, previously cleared under 510(k) # K133861. The proposed line extension device sizes and previously cleared device sizes are indicated for reference in the table below with a format of Balloon Diameter x Balloon Length x Catheter Length.
| | Table 8-1: Previously Cleared and Proposed Line Extension Device Sizes | |
|------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|
| | | |
| Flash OTW Line Cleared | Flash OTW Line Extension | |
| The Children Children | WA CHANGE CHANGE AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND AND A A CHANGE AND A A CHANGE AND A A | |
| Flash OTW Line Cleared<br>Device Sizes | Flash OTW Line Extension<br>Device Sizes |
|---------------------------------------------|--------------------------------------------------------------------------------------------|
| 7.0mm x 17mm x 80cm<br>7.0mm x 17mm x 135cm | 6.0mm x 12mm x 80cm<br>6.0mm x 12mm x 135cm<br>7.0mm x 12mm x 80cm<br>7.0mm x 12mm x 135cm |
The device sizes included in the line extension all share the exact same catheter design as the currently cleared sizes of the Flash Ostial System OTW. The only differences are the diameter and length of the balloons and the marker band spacing which indicates the length of the balloons. Additionally, the Indications for Use for both versions of the device are exactly the same.
{5}------------------------------------------------
Image /page/5/Picture/0 description: The image contains the logo for "Ostial corporation". The logo consists of a circular design on the left, resembling an interconnected chain or ring, with alternating light blue and gray segments. To the right of the circular design is the word "Ostial" in a dark gray, sans-serif font. Below "Ostial" is the word "corporation" in a light blue, sans-serif font, underlined with a light blue line.
## Ostial Corporation 510(k) Notification: FLASH Ostial System OTW
## G. Performance Data:
Biocompatibility testing has previously been completed on product equivalent to the FLASH Ostial System OTW. Requirements for biological evaluation of the proposed device were based on the Blue Book Memorandum issued on May 1, 1995, Use of International Standard ISO-10993, "Biological Evaluation of Medical Devices, Part 1: Evaluation and Testing," and the current FDA recognized standard ISO 10993-1: Biological Evaluation of Medical Devices – Part 1: Evaluation and Testing Within a Risk Management Process. The biocompatibility test results show that the materials used in the design and manufacture of the components of the proposed device are non-toxic and non-sensitizing to biological tissues consistent with its intended use. The following biocompatibility tests were completed:
- ISO MEM Elution Assay
- ASTM Hemolysis Assay
- . Complement Activation C3a and SC5b-9 Assay
- Thromboresistance Evaluation
- Materials Mediated Rabbit Pyrogen ●
- ISO Guinea Pig Maximization Sensitization
- ISO Acute Systemic Injection Test ●
- ISO Intracutaneous Reactivity Test ●
- Pyrogen (LAL) Chromogenic
The FLASH Ostial System OTW line extension device sizes or product equivalent were evaluated using the following in-vitro and performance bench testing to confirm the performance characteristics as compared to the product performance requirements:
- Balloon Crossing Profile .
- Catheter Shaft Diameter ●
- Catheter Working Length ●
- Catheter Inner Diameter ●
- Angioplasty Balloon Rated Burst Pressure
- . Proximal Balloon Burst Volume
- Angioplasty Balloon Compliance
- . Balloon Inflation Time
- Balloon Deflation Time ●
- Angioplasty Balloon Rated Burst Pressure (in 0 Stent)
- Proximal Balloon Burst Volume (in Stent) .
- Angioplasty Balloon Fatigue ●
- Proximal Balloon Fatigue ●
- Catheter Bond Strength ●
- Catheter Tip Pull Strength
- Catheter Torque Strength ●
- Simulated Use ●
- Flexibility and Kink Resistance ●
- Radiopacity
- Angioplasty Balloon Fatigue (in Stent)
- Proximal Balloon Fatigue (in Stent)
All test results demonstrate that the FLASH Ostial System OTW line extension device sizes meet the established product specifications.
#### H. Conclusions:
All test results demonstrated that the FLASH Ostial System OTW line extension device sizes meet all predetermined design verification and validation acceptance criteria necessary to verify safe and consistent performance of the devices for their Indications for Use in "Percutaneous Transluminal Angioplasty in the peripheral vasculature at aorto-ostial locations, including iliac, renal and carotid arteries" and "post-dilatation of balloon expandable stents in the peripheral vasculature." As such, Ostial Corporation is requesting clearance for the FLASH Ostial System OTW line extension device sizes to the FLASH Ostial System OTW product family, which was most recently cleared via Premarket Notification 510(k) # K133861 on July 2, 2014.
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.