ASAHI PTCA Guide Wires are intended to facilitate the placement of balloon dilatation catheters during percutaneous transluminal coronary angioplasty (PTCA) and percutaneous transluminal angioplasty (PTA), including use in crossing or assisting in crossing de novo coronary chronic total occlusions (CTO). The ASAHI PTCA Guide Wires are not to be used in the neurovasculature.
Device Story
Steerable guide wire (0.014 inch diameter, 190cm length) used to facilitate balloon dilatation catheter placement during PTCA/PTA procedures; specifically designed for crossing coronary chronic total occlusions (CTO). Constructed from stainless-steel core wire with platinum-nickel and stainless-steel coil assembly; distal portion features hydrophilic coating for lubricity and radiopaque coils for fluoroscopic visibility. Operated by interventional cardiologists in catheterization labs. Physician manually steers wire through vasculature to target lesion; provides track for subsequent balloon catheter delivery. Benefits include improved navigation through complex coronary anatomy and CTOs.
Clinical Evidence
Bench testing only. Performance evaluated per FDA guidance 'Coronary, Peripheral, and Neurovascular Guidewires - Performance Tests and Recommended Labeling' (2018). Tests included tensile strength, torque strength, torqueability, tip flexibility, coating adhesion/integrity, catheter compatibility, corrosion resistance, kink resistance, radio-detectability, and dimensional verification. Biocompatibility and hemocompatibility (hemolysis, complement activation, UPTT, thrombogenicity) were verified. Results demonstrated the device met all acceptance criteria and performed similarly to predicate devices.
Technological Characteristics
Stainless-steel core wire; platinum-nickel and stainless-steel coil assembly (7-wire woven outer coil); hydrophilic coating on distal portion. 0.014 inch diameter; 190cm length. Sterilized via Ethylene Oxide to SAL 10^-6. Mechanical steerable guide wire; no electronic components or software.
Indications for Use
Indicated for patients undergoing PTCA or PTA procedures requiring balloon dilatation catheter placement, including crossing or assisting in crossing de novo coronary chronic total occlusions (CTO). Contraindicated for use in the neurovasculature.
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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January 2, 2020
Asahi Intecc Co., Ltd. % Cynthia Valenzuela Director, Regulatory Affairs Asahi Intecc USA, Inc. 3002 Dow Ave, Suite 212 Tustin, California 92780
Re: K192599
Trade/Device Name: ASAHI PTCA Guide Wire ASAHI Gaia Next Regulation Number: 21 CFR 870.1330 Regulation Name: Catheter Guide Wire Regulatory Class: Class II Product Code: DQX Dated: November 27, 2019 Received: December 3, 2019
Dear Cynthia Valenzuela:
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
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requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 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/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (OS) 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 https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device (https://www.fda.gov/medical-devices/ device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-andcontinuing-education/cdrh-learn). 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 (https://www.fda.gov/medical-device-advice-comprehensive-regulatory-assistance/contact-usdivision-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Lydia Glaw, Ph.D. Assistant Director DHT2C: Division of Coronary and Peripheral Interventional Devices OHT2: Office of Cardiovascular Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K192599
Device Name ASAHI PTCA Guidewire ASAHI Gaia Next
#### Indications for Use (Describe)
ASAHI PTCA Guide Wires are intended to facilitate the placement of balloon dilatation catheters during percutaneous transluminal coronary angioplasty (PTCA) and percutaneous transluminal angioplasty (PTA), including use in crossing or assisting in crossing de novo coronary chronic total occlusions (CTO). The ASAHI PTCA Guide Wires are not to be used in the neurovasculature.
| Type of Use (Select one or both, as applicable) | |
|---------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------|
| <span style="font-size:10pt"> Prescription Use (Part 21 CFR 801 Subpart D)</span> | <span style="font-size:10pt"> Over-The-Counter Use (21 CFR 801 Subpart C)</span> |
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## 510(K) Summary [as required by 21CFR § 807.92(c)]
## ASAHI PTCA Guide Wire ASAHI Gaia Next
| DATE PREPARED: | 18 NOV 2019 |
|------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| APPLICANT: | ASAHI INTECC CO., LTD<br>3-100 Akatsuki-cho, Seto<br>Aichi 489-0071, Japan |
| PRIMARY CONTACT: | Mrs. Cynthia Valenzuela<br>Director, Regulatory Affairs<br>ASAHI INTECC USA, INC.<br>3002 Dow Avenue, Suite 212<br>Tustin, California 92780<br>Phone: (714) 442 0575<br>Fax: (949) 377 3255<br>Email: cynthiav@asahi-intecc-us.com |
| TRADE NAME: | ASAHI PTCA Guide Wire ASAHI Gaia Next |
| DEVICE CLASSIFICATION: | Class II, 21CFR § 870.1330 |
| CLASSIFICATION NAME: | Catheter Guide Wire |
| PRODUCT CODE: | DQX - Wire, Guide, Catheter |
| PREDICATE DEVICE(S): | ASAHI PTCA Guide Wire ASAHI Gaia (K171933) |
| REFERENCE DEVICE(S): | ASAHI PTCA Guide Wire CONFIANZA PRO 12 (K052339)<br>ASAHI PTCA Guide Wire ASAHI SION blue (K122468)<br>ASAHI PTCA Guide Wire ASAHI Gaia (K138653)<br>ASAHI Neurovascular Guide Wire ASAHI CHIKAI black (K141751)<br>ASAHI PTCA Guide Wire ASAHI Fielder XT-A (K153106)<br>ASAHI PTCA Guide Wire ASAHI SUOH 03 (K162842)<br>ASAHI PTCA Guide Wire ASAHI Gladius Mongo (K180784) |
## 510(K) K192599
### Intended Use/Indications for Use
ASAHI PTCA Guide Wires are intended to facilitate the placement of balloon dilatation catheters during percutaneous transluminal coronary angioplasty (PTCA) and percutaneous transluminal angioplasty (PTA), including use in crossing or assisting in crossing de novo coronary chronic total occlusions (CTO). The ASAHI PTCA Guide Wires are not to be used in the neurovasculature.
### Description:
The ASAHI PTCA Guide Wire ASAHI Gaia Next (hereafter "ASAHI Gaia Next") is a steerable guide wire with a maximum diameter of 0.014 inches (0.36mm) and available in 190cm length. The extension wire may be connected to the end of the guide wire outside the body. The guide wire is constructed from a stainless-steel core wire with a 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 distal end of the quide wire has a radiopaque outer coil and inner coil to achieve visibility and can be made to bend easily with the vessel curve. A hydrophilic
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coating is applied to the distal portion of the guide wire. The coil assembly construction is similar to predicate device.
## Comparison with Predicate Device(s):
Predicate Device: ASAHI PTCA Guide Wire ASAHI Gaia (K171933)
Comparisons of the ASAHI Gaia Next and predicate devices show that the technological characteristics of the ASAHI Gaia Next such as components, design, materials, sterilization Method:, shelf life and operating principle are identical or similar to the currently marketed predicate device. A tabular comparison of the specific technological characteristics between the predicate device and subject device is provided below.
The main changes from the predicate ASAHI Gaia are as follows:
- Outer Coil Material ●
- . Outer Coil Wire
- Inner Coil Material .
| Name of Device | ASAHI PTCA Guide Wire<br>ASAHI Gaia Next | ASAHI PTCA Guide Wire<br>ASAHI Gaia |
|-------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 510(K) | K192599 | K171933 |
| Intended Use and Indications | ASAHI PTCA Guide Wires are intended to facilitate the placement of balloo<br>dilatation catheters during percutaneous transluminal coronary angioplasty<br>(PTCA) and percutaneous transluminal angioplasty (PTA), including use in<br>crossing or assisting in crossing de novo coronary chronic total occlusions<br>(CTO).<br>The ASAHI PTCA Guide Wires are not to be used in the neurovasculature. | |
| Sterilization | Ethylene Oxide to SAL 10-6 | |
| Shelf Life | 2 Years | 3 Years |
| Target Body Location | Coronary, Peripheral | |
| Outer Coil Material | Stainless Steel<br>Platinum Nickel | Platinum Nickel |
| Outer Coil Wire | 7-wire woven coil | Single wire coil |
| Core Wire Material | Stainless Steel | Stainless Steel |
| Inner Coil Material | Stainless Steel<br>Platinum Nickel | Stainless Steel |
| Distal Tip Shape | Pre-shape | Straight, Pre-shape |
| Overall Length | 190cm | 190cm, 300cm |
| Distal Section Coating length | 40cm | 40cm |
| Outside Diameter of Wire | ASAHI Gaia Next 1<br>Distal 0.27mm/Proximal 0.36mm<br>ASAHI Gaia Next 2<br>Distal 0.30mm/Proximal 0.36mm<br>ASAHI Gaia Next 3<br>Distal 0.30mm/Proximal 0.36mm | ASAHI Gaia First<br>Distal 0.26mm/Proximal 0.36mm<br>ASAHI Gaia Second<br>Distal 0.28mm/Proximal 0.36mm<br>ASAHI Gaia Third<br>Distal 0.30mm/Proximal 0.36mm |
### Non Clinical Testing / Performance Data:
The substantial equivalence of the ASAHI Gaia Next line extension was evaluated in bench testing that followed the recommendations in the FDA draft guidance document; Coronary,
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Peripheral, and Neurovascular Guidewires - Performance Tests and Recommended Labeling, 15JUN2018.
- . Tensile Strength
- . Torque Strength
- Torqueability .
- Tip Flexibility
- Coating Adhesion / Integrity .
- Catheter Compatibility ●
- . Visual Inspection
- . Corrosion Resistance
- Kink Resistance
- . Radio - detectability
- Dimensional Verification ●
- Coating Integrity/Particulate ●
The in vitro bench tests demonstrated that the ASAHI Gaia Next 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 device.
# BIOCOMPATIBILITY:
The ASAHI Gaia Next was compared to the predicate devices. Based on similarities of the materials used in the subject device to its predicates / reference devices, the biocompatibility of the ASAHI Gaja Next was verified to be the same as those of the predicates / reference devices. Additional Hemocompatibility testing was conducted due to the change in the coil:
- Hemolysis ●
- SC5b-9 Complement Activation
- Unactivated Partial Thromboplastin Time ●
- Thrombogenicity ●
## CONCLUSION:
The ASAHI Gaia Next has identical intended use and the same or similar technological characteristics such as components, design, materials, sterilization Method:, shelf life and operating principles as the predicate and reference device. Performance data demonstrates that the device functions as intended.
Therefore, the ASAHI Gaia Next is substantially equivalent to the predicate device,
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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.
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You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
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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.
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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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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.
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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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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.
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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.
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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.