ASAHI PTCA Guide Wires: ASAHI PTCA Guide Wires are intended to facilitate the placement of balloon dilation catheters during percutaneous transluminal coronary angioplasty (PTCA) and percutaneous transluminal angioplasty (PTA). The ASAHI PTCA Guide Wires are not to be used in the neurovasculature. ASAHI Peripheral Guide Wires: ASAHI Peripheral Guide Wires are intended to facilitate the placement and exchange of diagnostic and therapeutic devices during intravascular procedures. This device is intended for peripheral vascular use only. ASAHI Guide Wire Extension: The ASAHI Guide Wire Extension accessory is intended for extension of the working length of an already introduced guide wire when exchanging over-the-wire interventional devices during an angioplasty procedure.
Device Story
Steerable guide wires; core wire with coil assembly; radiopaque distal tip for visibility. Used in PTCA, PTA, and peripheral vascular procedures to facilitate placement/exchange of catheters and interventional devices. Operated by physicians in clinical settings. Modification involves alternate PTFE coating manufactured without PFOA. Device functions as a mechanical guide; no electronic or software components. Benefits include maintained clinical performance and safety profile while eliminating PFOA in manufacturing.
Clinical Evidence
Bench testing only. Evaluated coating adherence, coating integrity, and particulate generation using simulated clinical use models. Biocompatibility testing performed per ISO 10993 (cytotoxicity, irritation, sensitization, systemic toxicity, pyrogenicity, hemocompatibility). Results confirmed the modified coating maintains integrity, generates no excessive particulates, and is biocompatible, performing similarly to predicate devices.
Technological Characteristics
Steerable guide wire with core wire and coil assembly. Radiopaque distal tip. Proximal portion coated with PTFE (alternate material without PFOA). Sterilization method unchanged. Mechanical device; no energy source or software.
Indications for Use
Indicated for patients undergoing percutaneous transluminal coronary angioplasty (PTCA) or percutaneous transluminal angioplasty (PTA) (PTCA wires); or patients undergoing intravascular procedures requiring placement/exchange of diagnostic/therapeutic devices (Peripheral wires). Contraindicated for neurovasculature use (PTCA wires).
Regulatory Classification
Identification
A catheter guide wire is a coiled wire that is designed to fit inside a percutaneous catheter for the purpose of directing the catheter through a blood vessel.
Special Controls
*Classification.* Class II (special controls). The device, when it is a torque device that is manually operated, non-patient contacting, and intended to manipulate non-cerebral vascular guide wires, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 870.9.
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is a stylized image of three human profiles facing to the right, with flowing lines beneath them.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
April 3, 2017
ASAHI INTECC CO., LTD. % Candace Cederman CardioMed Device Consultants, LLC 5523 Research Park Drive, Suite 205 Baltimore, Maryland 21228
Re: K163426
Trade/Device Name: ASAHI PTCA Guide Wires, ASAHI Peripheral Guide Wires, ASAHI Guide Wire Extension Regulation Number: 21 CFR 870.1330 Regulation Name: Catheter Guide Wire Regulatory Class: Class II Product Code: DQX Dated: March 1, 2017 Received: March 3, 2017
Dear Ms. Cederman:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration. listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you; however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in
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the quality systems (OS) 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,
Carlos L. Pena-S
Carlos L. Peña, PhD, MS Director Division of Neurological and Physical Medicine Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K163426
Device Name
ASAHI PTCA Guide Wires, ASAHI Peripheral Guide Wires, ASAHI Guide Wire Extension
# Indications for Use (Describe)
ASAHI PTCA Guide Wires:
ASAHI PTCA Guide Wires are intended to facilitate the placement of balloon dilation catheters during percutaneous transluminal coronary angioplasty (PTCA) and percutaneous transluminal angioplasty (PTA). The ASAHI PTCA Guide Wires are not to be used in the neurovasculature.
ASAHI Peripheral Guide Wires:
ASAHI Peripheral Guide Wires are intended to facilitate the placement and exchange of diagnostic and therapeutic devices during intravascular procedures. This device is intended for peripheral vascular use only.
ASAHI Guide Wire Extension:
The ASAHI Guide Wire Extension accessory is intended for extension of the working length of an already introduced guide wire when exchanging over-the-wire interventional devices during an angioplasty procedure.
Type of Use (Select one or both, as applicable)
X Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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510(k) Summary
(as required by 21 CFR 807.92)
# ΛՏΛΗΙ INTECC CO.,LTD.
1703 Wakita-cho, Moriyama-ku, Nagoya, Aichi 463-0024 Japan Tel. +81-52-768-1211 Fax. +81-52-768-1221 Branch offices: Tokyo, Nagoya, Osaka, Hong Kong, Amsterdam, Singapore, Beijing Research Facilities and Factories: Osaka, Seto, Thailand, Hanoi
# ASAHI PTCA Guide Wires ASAHI Peripheral Guide Wires ASAHI Guide Wire Extension
# 510(k) K163426
| DATE PREPARED: | March 29, 2017 |
|------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| APPLICANT | ASAHI INTECC CO., LTD.<br>1703 Wakita-cho, Moriyama-ku<br>Nagoya, Aichi 463-0024, Japan |
| CONTACT | Yoshinori Terai, President and CEO<br>ASAHI Intecc USA, Inc.<br>2500 Red Hill Avenue, Suite 210<br>Santa Ana, CA 92705<br>Tel: (949) 756-8252, FAX: (949) 756-8165<br>e-mail: asahi.ra-fda@asahi-intecc.com |
| TRADE NAME: | ASAHI PTCA Guide Wires<br>ASAHI Peripheral Guide Wires<br>ASAHI Guide Wire Extension |
| DEVICE CLASSIFICATION: | Class 2 per 21 CFR §870.1330 |
| CLASSIFICATION NAME: | Catheter Guide Wire |
| PRODUCT CODE | DQX - Wire, Guide, Catheter |
| PREDICATE DEVICES: | • ASAHI PTCA Guide Wires (K022762, K031277, K032615, K041531,<br>K043422, K052022, K052339, K062186. K063819, K072431,<br>K072705, K083904, K100578, K101986, K122468, K122469,<br>K133865, K153106)<br>• ASAHI Peripheral Guide Wires (K061984, K071721, K083146,<br>K103057, K110553, K150445, K153443)<br>• ASAHI Guide Wire Extension (K083145, K101985) |
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# INTENDED USE/INDICATIONS FOR USE
The intended use of these wires are unchanged:
ASAHI PTCA Guide Wires:
ASAHI PTCA Guide Wires are intended to facilitate the placement of balloon dilation catheters during percutaneous translyminal coronary angioplasty (PTCA) and percutaneous transluminal angioplasty (PTA). The ASAHI PTCA Guide Wires are not to be used in the neurovasculature.
# ASAHI Peripheral Guide Wires:
ASAHI Peripheral Guide Wires are intended to facilitate the placement and exchange of diagnostic and therapeutic devices during intravascular procedures. This device is intended for peripheral vascular use only.
# ASAHI Guide Wire Extension
The ASAHI Guide Wire Extension accessory is intended for extension of the working length of an already introduced guide wire when exchanging over-the-wire interventional devices during an angioplasty procedure.
# DEVICE DESCRIPTION:
This modification details a change relating to the removal of perfluorooctanoic acid (PFOA) used by suppliers in the manufacture of PTFE (polytetrafluoroethylene) coating used on the ASAHI family of guidewires including ASAHI PTCA guide wires and ASAHI peripheral guidewires. All of these wires are steerable guide wires, constructed with a core wire with coil assembly. The distal ends of the guide wires have a radiopaque tip to achieve visibility. Various coatings are applied to the distal and proximal portions of the guidewires.
This submission covers the addition of an alternate type of PTFE coating material. The designs and performance of the guidewires are unchanged.
#### COMPARISON WITH PREDICATE DEVICES:
The technological characteristics of the subject guide wires are substantially equivalent to those of the predicate guidewires. The differences between the devices relates to the guide wire proximal coating. The guide wire design and indications remain unchanged.
Comparisons of the revised ASAHI guide wires to the predicate devices show that the technological characteristics of the Subject device such as the product performance, intended use/indications, components, materials, sterilization method, shelf life, manufacturing process, and operating principle are identical to the currently marketed predicate devices. The only difference is in the PTFE coating applied to the proximal portion of the device. The new PTFE is manufactured by a supplier without the use of PFOA.
| Name of Device | | |
|------------------------------|------------------------------------------------------------------------------------|------------------------------------------------------------------------------------|
| 510(k) | ASAHI PTCA Guide wire<br>ASAHI Peripheral Guide wire<br>ASAHI Guide wire Extension | ASAHI PTCA Guide wire<br>ASAHI Peripheral Guide wire<br>ASAHI Guide wire Extension |
| | Current Application | Multiple |
| Intended Use and Indications | Unchanged | |
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| Name of Device | ASAHI PTCA Guide wire<br>ASAHI Peripheral Guide wire<br>ASAHI Guide wire Extension | ASAHI PTCA Guide wire<br>ASAHI Peripheral Guide wire<br>ASAHI Guide wire Extension |
|---------------------------|----------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------|
| Sterilization | Unchanged | |
| Shelf Life | Unchanged | |
| Target Body Location | Unchanged | |
| Outer Coil Material | Unchanged | |
| Core Wire Material | Unchanged | |
| Inner Coil Material | Unchanged | |
| Distal Tip Shape | Unchanged | |
| Overall length | Unchanged | |
| Outer coil length | Unchanged | |
| Outer Coil Outer Diameter | Unchanged | |
| Distal Outer Coating | Unchanged | |
| Proximal Coating | PTFE<br>(with or without PFOA used in<br>processing)<br>Alternate PTFE<br>(without PFOA used in<br>processing) | PTFE<br>(with or without PFOA used in<br>processing) |
# NON CLINICAL TESTING / PERFORMANCE DATA:
Confirmatory non clinical laboratory testing was performed to determine substantial equivalence.
The following testing/assessments were performed:
| Test | Test Method Summary | Results/Conclusions |
|-----------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Coating<br>Adherence | Integrity of the coated core wire is<br>determined before and after pretreatment<br>and manipulation in excess of that<br>expected in clinical use. | Test results confirmed that the coating<br>adhesion was maintained during<br>simulated clinical use in all test articles. |
| Coating<br>Integrity &<br>Particulate<br>Characterization | Coating integrity and particulate<br>generation were evaluated. The test<br>samples were advanced through a<br>clinically relevant simulated use model to<br>the target location, retracted and the<br>coating inspected under magnification.<br>All particulate matter generated during<br>insertion/retraction of the guidewire was<br>characterized. | This testing characterized the coating<br>integrity and particulate generation<br>during simulated use. The test results<br>confirmed that the coating integrity was<br>maintained during simulated clinical use<br>of the test articles. |
The in vitro bench tests demonstrated that the devices with the modified coating met all acceptance criteria and performed similarly to the predicate devices. Performance data demonstrate that the device functions as intended, and has a safety and effectiveness profile that is similar to the predicate devices.
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# BIOCOMPATIBILITY:
| Test | Test Method Summary | Results/Conclusions |
|---------------------------------------------------------------|-----------------------------------------------------------------|----------------------------------------------------------------------------------------------|
| Cytotoxicity | Testing was conducted in accordance with ISO 10993-5 | Passed. No evidence of causing cell lysis or toxicity. |
| Intracutaneous Irritation | Testing was conducted in accordance with ISO 10993-10 | Passed. Difference between test article and control less than 1.0. |
| Sensitization | Testing was conducted in accordance with ISO 10993-10 | Passed. No evidence of causing delayed dermal contact sensitization |
| Systemic Toxicity | Testing was conducted in accordance with ISO 10993-11 | Passed. No mortality or evidence of systemic toxicity |
| Material Mediated<br>Pyrogenicity | Testing was conducted in accordance with ISO 10993-11, USP<151> | Passed. Test article judged as non-pyrogenic. |
| Hemocompatibility -<br>Hemolysis | Testing was conducted in accordance with ISO 10993-4, ASTM F756 | Passed. Hemolytic index was 0.0%. |
| Hemocompatibility -<br>Complement Activation<br>(SC5b-9, C3a) | Testing was conducted in accordance with ISO 10993-4 | Passed. Test article is not considered to be a potential activator of the complement system. |
| Hemocompatibility -<br>PTT | Testing was conducted in accordance with ASTM F2382 | Passed. Test article is considered activator. |
| Hemocompatibility – in<br>vivo Thromboresistance | Testing was conducted in accordance with ISO 10993-4 | Passed. Test article is considered thromboresistant. |
Testing was performed to assess biocompatibility of the modified coating material.
# CONCLUSION:
The ASAHI guidewires with the alternate coating have the identical intended use and the same technological characteristics such as components, design, sterilization method, shelf life and operating principles as the predicate devices. Data demonstrate that the device performance is unchanged.
Therefore, the ASAHI guidewires are substantially equivalent to the predicate devices.
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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.
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Reading rule for every project: how many summaries do you read in full?
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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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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.
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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.