K042338 · Lake Region Mfg., Inc. · DQX · Sep 16, 2004 · Cardiovascular
Device Facts
Record ID
K042338
Device Name
CORONARY PERIPHERAL AND RENAL STEERABLE GUIDEWIRE
Applicant
Lake Region Mfg., Inc.
Product Code
DQX · Cardiovascular
Decision Date
Sep 16, 2004
Decision
SESE
Submission Type
Special
Regulation
21 CFR 870.1330
Device Class
Class 2
Indications for Use
Lake Region's steerable guidewires are intended for use in angiographic procedures to introduce and position catheters and interventional devices within the coronary and peripheral vasculature, including the renal vasculature. The steerability feature allows the guidewire to be torqued to facilitate navigation through the vasculature.
Device Story
The device is a steerable guidewire consisting of a PTFE-coated stainless steel core ground at the distal end for flexibility. It features a distal tip coil soldered to the core and additional radiopaque marker coils. The device is used by physicians in clinical settings to navigate coronary, peripheral, and renal vasculature. The guidewire is torqued by the operator to facilitate navigation, allowing for the introduction and positioning of catheters and interventional devices. It is offered in various lengths (130cm-300cm), diameters (.014"-.018"), and tip configurations (straight or shaped). The device is provided to OEM manufacturers, kit assemblers, and distributors, and may be supplied sterile or bulk.
Clinical Evidence
No clinical data. Equivalence was established through bench testing, including visual, tactile, dimensional, and mechanical attribute inspections. Biocompatibility was established based on the use of materials identical to the predicate device and a history of proven biocompatibility.
Indicated for use in angiographic procedures to introduce and position catheters and interventional devices within the coronary, peripheral, and renal vasculature in patients requiring vascular navigation.
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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K042338
## SEP 1 6 2004
## SECTION 2.0 – SUMMARY OF SAFETY AND EFFECTIVENESS
### August 25, 2004
This summary is being included in the Premarket Notification submission in lieu of a statement of availability.
| Company Name, Address, and Telephone Number: |
|----------------------------------------------------------------------------------------------------------------------------------------|
| Lake Region Manufacturing, Inc. (LRM)<br>340 Lake Hazeltine Drive<br>Chaska, MN 55318<br>Telephone: (952) 448-5111 Fax: (952) 448-3441 |
| Contact Name: Karen Mortensen<br>Senior Regulatory Compliance Specialist |
Establishment Registration Number: 2126666
## Device Trade Name/Proprietary Name:
LRM produces guidewires on an OEM basis for other manufacturers, kit assemblers, and distributors. Consequently there are a large number of trade and proprietary names not including or associated with LRM. LRM has no proprietary names of its own to be included with this submission.
## Device Common Names/Usual Names and Classification Names:
These devices are commonly known as guides, guidewires, or spring The current classification names, and product codes are quidewires. Angiographic Guidewire (74HAP), Catheter Guidewire (74DQX), and Radiological Catheter Guidewire (74JAJ).
Classification of Devices:
Olassification of Donoos listed above were originally classified as Class II devices by the Neurology (84HAD), Cardiovascular (74DQX), and Radiology (90JAJ) Review Panels, respectively.
### Applicability of Performance Standards:
LRM has determined that no mandatory performance standards have been established for these devices under Section 514 of the Medical Amendments to Federal Food, Drug, and Cosmetic Act or by any subsequent regulatory action. LRM has also determined that there are no applicable voluntary standards.
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## Labels, Labeling and Advertising:
LRM produces cardiovascular and vascular guidewires on an OEM basis for ether manufacturers kit assemblers and distributors. There is no direct other manafacturer int ages to the customer controlled labels labeling or diotion by Erinals are at their discretion including the resolution of any promotion regulatory obligations. A fraction of the total production bears LRM controlled labels and labeling.
### Device Description:
This device is a guidewire with a PTFE coated stainless steel core that has been ground at the distal end to provide the appropriate tip flexibility. boon ground for the coils are joined to the core at the ground end and a distal tip coil is soldered to the core. The proximal PTFE coated portion of the core has two sections of the PTFE removed to aid in estimating guidewire positioning.
The product is offered with a shapeable straight tip or in a preshaped configuration. The guidewires are optionally coated with MDX (silicone). The guidewires are bound by the following parameters:
| Outside Diameter: | .014" - .018" |
|-------------------|---------------------------------------------------|
| Lengths: | 130cm - 300cm |
| Tips: | Straight or shaped with various tip flexibilities |
## Engineering Specifications:
The design specifications are the same for the proposed device as they are for the LRM predicate device [reference 510(k)s K022813 and K011968] with the exception of the smaller outer diameter and the additional radiopaque marker coils soldered to the core proximal to the existing radiopaque coil. The finished device must meet the same basic design criteria as the predicate device.
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# SECTION 2.0 – SUMMARY OF SAFETY AND EFFECTIVENESS (continued)
## Substantial Equivalence Data:
Lake Region believes this device is substantially equivalent to the predicate device. Eake Region belioved this active to between the predicate device and the proposed below lists the differences bettre the changes to the device met the device. predetermined acceptance criteria.
| Item | Proposed Device Differences from LRM Predicate<br>cleared under 510(k) K022813 |
|-----------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------|
| Raw Materials | Core:<br>No change to raw material<br><br>Coils:<br>No change to raw material |
| Assembly Process | No change to assembly processes with the exception<br>of the additional solder step to join the additional<br>radiopaque marker coils to the core. |
| Physical<br>Characteristics | No change except to offer a .014" along with the<br>.018" diameter. |
| Labeling/IFU | No change to the labeling/IFU except to change the<br>description to add the smaller diameter. |
| Intended Use | No change to intended use |
| Anatomical Sites | No change |
| Target Population | No change |
| Performance | No change |
| Testing | No change |
| Safety<br>Characteristics | No change |
| Biocompatibility | No change |
| Risk Analysis | No change |
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## SECTION 2.0 - SUMMARY OF SAFETY AND EFFECTIVENESS (continued)
## Quality System Controls:
Design Control:
Design oonformance with the design control procedure requirements as ERM 10 11 0011 CFR 820.30. Risk analysis was completed by means of a Specifically 21 OFF ecolor sis (FMEA) and all verification and validation rativities resulted in the ability to demonstrate that the predetermined acceptance criteria were met.
### Material/Product/Process Controls:
Matchain Todoon Tooob Donline in place to assure that each product manufactured remains equivalent to the predicate products, and that the mandidotarou Tomans o adverse affect on the safe and effective use of the The quality systems include Engineering Change Order Review, product. product. - The Qualification, Product Qualification, and Process Qualification. These controls are applied to each product size/group.
### Qualification Testing:
Non-Clinical Tests:
In order to demonstrate equivalence of the proposed device, LRM performed testing to established requirements. Test pieces were tested and inspected tooling to established specific inspection criteria requirements for visual/tactile, dimensional and mechanical attributes. The results of these viouslikability, umonitionality and performance characteristics of these guidewires are comparable to the currently marketed devices.
### Biocompatibility Testing:
There are no new materials used in the modification of this device. Biocompatibility testing has been performed on the predicate product and has been found to be applicable to the modified device. This testing, along with a market history of proven biocompatibility, establishes acceptable biocompatibility for this device.
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## SECTION 2.0 - SUMMARY OF SAFETY AND EFFECTIVENESS (continued)
## Packaging and Sterilization Information:
LRM produces guidewires on an OEM basis for other manufacturers, kit assemblers, and distributors. There is no direct distribution by LRM. A portion of the production is private label, sterile packaged to customer specifications, some of that product is provided sterile to the customer.
The single packaged guidewire is placed in a dispenser and then into a Tyvek®/poly pouch. The packaged product may be packaged as five or ten pouches in a shelf carton, which are typical packaging configurations.
There will be no changes to the sterilization process for the portion of packaged product shipped sterile to the customer. For the product that is shipped bulk, the packaging design and sterilization process parameters are the customer's responsibility. LRM will not recommend that its customers modify their packaging or sterilization procedures as a result of this submission.
### Intended Use Statement:
Lake Region's steerable guidewires are intended for use in angiographic procedures to introduce and position catheters and interventional devices within the coronary and peripheral vasculature, including the renal vasculature. The steerability feature allows the guidewire to be torqued to facilitate navigation through the vasculature.
NOTE: The modification of this device does not alter its intended use.
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Image /page/5/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized eagle with three lines forming its body and wings. The eagle is positioned within a circle that contains the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" in a circular arrangement around the eagle.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
SEP 1 6 2004
Lake Region Manufacturing, Inc. c/o Ms. Karen Mortensen Senior Regulatory Compliance Specialist 340 Lake Hazeltine Drive Chaska, MN 55318
Re: K042338
K042530
Trade/Device Name: Coronary, Peripheral and Renal Steerable Hydrophilic Guidewire Regulation Number: 21 CFR 870.1330 Regulation Name: Catheter guidewire Regulatory Class: Class II Product Code: DQX Dated: August 27, 2004 Received: August 30, 2004
Dear Ms. Mortensen:
We have reviewed your Section 510(k) premarket notification of intent to market the device we nave reviewed your becaused 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 conninered pror to May 20, 1978, in accordance with the provisions of the Federal Food, Drug, de vices that have been require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The r ou may, therefore, mains of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such 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 i lease of a recommation 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); good manufacturing practice requirements as set
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Page 2 – Ms. Karen Mortensen
forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic (21 CFR 1000-1050 forth in the quality systems (QD) regulation (Sections 531-542 of the Act); 21 CFR 1000-1050.
product radiation control provisions (Sections 531-542 of the Action Section S product radiation control provisions (Sections 35 described in your Section 510(k)
This letter will allow you to begin marketing your device of your device to a legal This letter will allow you to begin manxemily of substantial equivalence of your device to a legally premarket notification. The FDA iniding of substantial equive and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please
s and the may be and 1648 - the same of the same and the requires an the re If you desire specific advice for your de rice of east. Also, please note the regulation entitled, contact the Office of Comphalled at (301) 377-77-77 (21CFR Part 807.97). You may obtain " Misoranding by reference to premance notificals as the Act from the Division of Small other general information on your responsible.com and and the mumber (800) 638-2041 or (301) 443-6597 or at its Internet address
(301)445-0597 of at its internetadios
http://www.fda.gov/cdrh/dsma/dsmamain.html
Sincerely yours,
Dvina R. Vochner
A Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices
Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known): Ko42338
Device Name:___Coronary Periperal and Renal Steerable Hydrophilic Guidewire
Indications For Use:
Lake Region's steerable guidewires are intended for use in angiographic Lake Negron's Stocrable galability catheters and interventional devices procedures to introduce and peripheral vasculature, including the renal within the obronary and facilitate navigation through the vasculature.
Prescription Use X ___________________________________________________________________________________________________________________________________________________________
AND/OR
Over-The-Counter Use
(Part 21 CFR 801 Subpart D)
(21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Muna D. Salmer
(Division Sian-Off) Division of Cardiovascular Devices
510(k) Number K042338
Page 1 of
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.