ASAHI Neurovasulature Guide Wire: ASAHI CHIKAI black 18 soft tip
Applicant
Asahi Intecc Co., Ltd.
Product Code
MOF · Cardiovascular
Decision Date
Jul 1, 2017
Decision
SESE
Submission Type
Special
Regulation
21 CFR 870.1330
Device Class
Class 2
Indications for Use
This guide wire is intended to be used in the neuro vasculature to facilitate the placement and exchange of therapeutic devices such as cerebral catheters during intravascular therapy. This guide wire is intended for use only in the neuro vasculature.
Device Story
Steerable neurovascular guide wire; 0.018-inch diameter; 200cm length. Constructed from stainless steel core wire with platinum-nickel and stainless steel coils; distal radiopaque tip; hydrophilic coating on distal portion. Used in neurovasculature to facilitate placement/exchange of therapeutic devices (e.g., cerebral catheters) during intravascular therapy. Operated by physicians in clinical settings. Provided with torque device, shaping device, and inserter. Device functions as mechanical guide for catheter navigation; provides radiopacity for visualization under fluoroscopy. Benefits patient by enabling precise delivery of therapeutic devices to target cerebral arteries.
Clinical Evidence
Bench testing only. Performance evaluated via tensile strength, torque strength, torqueability, tip flexibility, and simulated use testing in models. All test articles met established acceptance criteria based on predicate device specifications.
Technological Characteristics
Stainless steel core wire; platinum-nickel and stainless steel coils; hydrophilic coating on distal portion. 0.018-inch diameter; 200cm length. Sterilized via Ethylene Oxide to SAL 10^-6. Mechanical device; no software or energy source.
Indications for Use
Indicated for use in the neurovasculature to facilitate placement and exchange of therapeutic devices, such as cerebral catheters, during intravascular therapy.
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 is a seal for the Department of Health & Human Services - USA. The seal is circular, with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. In the center of the seal is a stylized image of three human profiles facing to the right, with a design that suggests flowing hair or fabric.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
July 1, 2017
ASAHI INTECC CO., LTD. % Candace Cederman CardioMed Device Consultants, LLC 5523 Research Park Drive. Suite 205 Baltimore, Maryland 21228
Re: K171613
Trade/Device Name: ASAHI Neurovascular Guide Wire: ASAHI CHIKAI black 18 soft tip Regulation Number: 21 CFR 870.1330 Regulation Name: Catheter Guide Wire Regulatory Class: Class II Product Code: MOF Dated: May 30, 2017 Received: June 2, 2017
Dear Ms. Candace 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 device
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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/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)
K171613
Device Name
ASAHI Neurovascular Guide Wire: ASAHI CHIKAI black 18 soft tip
#### Indications for Use (Describe)
This guide wire is intended to be used in the neuro vasculature to facilitate the placement and exchange of therapeutic devices such as cerebral catheters during intravascular therapy. This guide wire is intended for use only in the neuro vasculature.
| 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) SAHI 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 Neurovascular Guide Wire: ASAHI CHIKAI black 18 soft tip
| DATE PREPARED: | June 22, 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 Neurovascular Guide Wire:<br>ASAHI CHIKAI black 18 soft tip |
| DEVICE CLASSIFICATION: | Class 2 per 21 CFR §870.1330 |
| CLASSIFICATION NAME: | Wire, Guide, Catheter, Neurovasculature |
| PRODUCT CODE | MOF- Catheter Guide Wire |
| PREDICATE DEVICES: | ASAHI Neurovascular Guide Wire:<br>ASAHI CHIKAI black 18 (K141751) |
### 510(k) K171613
#### Indications for Use
This guide wire is intended to be used in the neuro vasculature to facilitate the placement and exchange of therapeutic devices such as cerebral catheters during intravascular therapy. This guide wire is intended for use only in the neuro vasculature.
### Device Description:
The ASAHI CHIKAI black 18 soft tip neurovascular guide wire is a steerable quide wire with a maximum diameter of 0.018 inches (0.45mm) and length of 200cm. The quide wire is constructed from a stainless steel core wire with platinum-nickel and stainless steel coils. The coil assembly consists of an inner coil and an outer coil, and the coil assembly is soldered to the core wire. The coil assembly construction is similar to that of the 510(k) cleared ASAHI CHIKAI black 18 neurovascular guide wire (K141751).
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The distal end of the quide wire has a radiopaque tip to achieve visibility. A hydrophilic coating is applied to the distal portion of the guidewire. Like the predicates, the ASAHI CHIKAI black 18 soft tip is packaged with accessories: a torque device, shaping device, and inserter.
This change introduces a soft tip version of the round curve tip configuration.
#### Comparison with Predicate Devices:
Comparisons of the ASAHI CHIKAI black 18 soft tip to its predicate device 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. There are only minor dimensional variations in the core wire taper and inner coil between the Subject and predicate device.
| Name of Device | ASAHI Neurovascular Guide<br>Wire (ASAHI CHIKAI black 18<br>soft tip) | ASAHI Neurovascular Guide<br>Wire (ASAHI CHIKAI black 18) |
|---------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------|
| 510(k) | Current Application | K141751 |
| Intended Use and<br>Indications | This guide wire is intended to be used in the neuro vasculature to<br>facilitate the placement and exchange of therapeutic devices such<br>as cerebral catheters during intravascular therapy. This guide wire<br>is intended for use only in the neuro vasculature. | |
| Sterilization | Provided sterile via Ethylene Oxide to SAL10-6 | |
| Shelf Life | 3 Years | |
| Target Body Location | Neuro Vascular | |
| Outer Coil Material | Stainless Steel<br>Platinum-Nickel | |
| Core Wire Material | Stainless Steel | |
| Inner Coil Material | Stainless Steel | |
| Distal Tip Shape | Round Curve | |
| Overall length | 200 cm | |
| Outer coil length | 34cm | |
| Outer Coil Outer Diameter | 0.45mm | |
| Distal Outer Coating | Hydrophilic | |
| Distal Outer Coil | Radiopaque Coil | |
### Non Clinical testing / Performance Data:
The substantial equivalence of the ASAHI CHIKAI black line extension was evaluated in performance testing that followed the recommendations in the FDA guidance document: Coronary and Cerebrovascular Guidewire Guidance. Only those tests impacted by the device modifications were repeated. The table below provides a summary of the performance test methods, results and conclusions. Acceptance criteria for each of the tests were determined by prior comparative testing with predicate devices, ASAHI's established quide wire specifications, and clinical experience.
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| Test | Test Method Summary | Results/Conclusions |
|--------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Tensile<br>Strength | To determine maximum allowable<br>tensile load between connections, guide<br>wire is fixed in the Tensile Testing<br>Machine and pulled until failure. | All test articles met established<br>acceptance criteria. Acceptance criteria<br>determined by evaluation of predicate<br>devices and ASAHI's established tensile<br>strength specifications. |
| Torque<br>Strength | To determine torque strength, distal end<br>is inserted & advanced through<br>simulated model. Distal tip is held<br>stationary while proximal end is rotated<br>until failure. | All test articles met established<br>acceptance criteria. Acceptance criteria<br>determined by evaluation of predicate<br>devices and ASAHI's established torque<br>strength specifications. |
| Torqueability | To determine torque response,<br>guidewire is inserted through catheter &<br>into Rotational Response model.<br>Proximal end is rotated and the torque<br>response at distal end is measured. | All test articles met the acceptance<br>criteria. Acceptance criteria determined<br>by evaluation of predicate devices and<br>ASAHI's established torqueability<br>specifications. |
| Tip Flexibility | To determine flexibility of the distal end,<br>the force to deflect the guide wire is<br>measured by a force analyzer attached<br>to a load cell. | All test articles met established Tip<br>Flexibility acceptance criteria.<br>Acceptance criteria determined by<br>evaluation of predicate devices and<br>ASAHI's established tip flexibility<br>specifications. |
| Simulated<br>Use Testing | To simulate clinical use, guidewire is<br>inserted through guide catheter placed<br>in simulated model and advanced to<br>target area. Microcatheter is inserted<br>over guidewire & advanced to target<br>cerebral artery multiple times. | Test results on all test articles confirmed<br>guide wire performance. Guidewire<br>reached target area and microcatheter<br>was successfully advanced over<br>guidewire to target site. Acceptance<br>criteria determined by evaluation of<br>predicate devices and ASAHI's<br>established simulated use<br>specifications. |
The in vitro performance tests demonstrated that the ASAHI CHIKAI black 18 soft tip met all acceptance criteria and performed similarly to the predicate device. Performance data demonstrate that the device functions as intended, and has a safety and effectiveness profile that is similar to the predicate device.
### Conclusion:
The ASAHI CHIKAI black 18 soft tip has identical intended use and indications, and the same or similar technological characteristics such as components, design, materials, sterilization method, shelf life and operating principles as the predicate devices. Performance data demonstrates that the device functions as intended. Therefore, the ASAHI CHIKAI black 18 soft tip is substantially equivalent to the predicate device.
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.