The EWC: ECG Cable and Leadwire Systems are reusable electrode cable systems used to transmit signals from patient electrodes (not supplied by EWC) to various electrocardiograph recorders/monitors (not supplied by EWC) for both diagnostic and monitoring purposes. The EWC: ECG Cable and Leadwire Systems are limited by the indications for use of the connected monitoring or diagnostic equipment. Such equipment is commonly located in hospitals, doctor's offices, emergency vehicles, as well as in home use.
Device Story
Reusable electrode cable and leadwire system; transmits electrical signals from patient-applied electrodes to external ECG recorders/monitors. Configurations include 3, 5, 7, and 10-lead versions with various connectors (snaps, grippers, pins). Used in hospitals, clinics, emergency vehicles, and home settings. Operated by healthcare professionals or patients (depending on host monitor). Device acts as passive conduit for physiological signals; does not process data. Benefits include enabling signal acquisition for cardiac monitoring/diagnosis.
Clinical Evidence
Bench testing only. Device tested for compliance with 21 CFR 898 performance standards for electrode lead wires and patient cables. Comparative simulated use testing performed against predicate device; no significant performance differences observed.
Technological Characteristics
Reusable ECG cable and leadwire system. Configurations: 3, 5, 7, 10-lead. Connectors: snaps, grippers, pins. Passive signal transmission. Complies with 21 CFR 898. Partial evaluation against ANSI/AAMI EC53-1995.
Indications for Use
Indicated for patients requiring ECG diagnostic or monitoring procedures. Use is limited by the indications of the connected ECG recording or monitoring equipment in clinical, emergency, or home settings.
Regulatory Classification
Identification
A patient transducer and electrode cable (including connector) is an electrical conductor used to transmit signals from, or power or excitation signals to, patient-connected electrodes or transducers.
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Image /page/0/Picture/0 description: The image shows the date SEP 23 1998 at the top. Below the date is the logo for EWC, which is in a bold, sans-serif font. To the right of the letters is a symbol that consists of five horizontal lines stacked on top of each other. The logo and date are in black and white.
K982817-
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## Summary and Certification 510(k) Summary Date: August 6, 1998
## 1. Establishment Information:
| Submitter: | EWC (Electri-Wire Corporation)<br>N26 W23315 Paul Road<br>Pewaukee, WI 53072-4061 |
|------------------|-----------------------------------------------------------------------------------|
| Registration #: | 9921058 (Owner/Operator) |
| Contact Name: | Timothy Davis |
| Contact Phone #: | (414) 548-3700 or 800-786-3707 |
| Manufacturing: | EWC (Electri-Wire Corporation)<br>208 West Street<br>Waupun, WI 53963 |
| Registration #: | 2183764 |
2. General Device Information:
| Common Name: | ECG Cable and Leadwire Systems |
|------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade Name: | EWC: ECG Cable and Leadwire Systems |
| Classification Name: | Patient transducer and electrode cable (including connector) |
| Device Classification: | Class II (21 CFR: part 870.2900) |
| Performance Std.: | 21 CFR Part 898: Performance Standard for Electrode Lead<br>wire and Patient Cables. This Standard is effective on May<br>11, 1998 and was published in the Friday, May 9, 1997<br>Federal Register. |
3. Substantial Equivalence: The EWC: ECG Cable and Leadwire Systems is substantially equivalent to the Tronomed Patient Cable and Lead Wire Systems which were marketed under 510(k) numbers; K771645, K771027 and K770884.
4. Device Description: The EWC: ECG Cable and Leadwire Systems are reuseable electrode cables designed to transmit signals from the patient electrode (not supplied by EWC) to various electrocardiograph recorders/monitors (not supplied by EWC) for both diagnostic and monitoring purposes. This device is common to both the industry and to most medical establishments. The EWC Cable and Leadwire Systems is offered in various configurations of cable types (3, 5, 7 and 10 lead versions), various lead styles (length, color, etc.) and various electrode connector configurations (snaps, grippers and pins).
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5. Intended Use: The EWC: ECG Cable and Leadwire Systems are reusable electrode cable systems used to transmit signals from patient electrodes (not supplied by EWC) to various electrocardiograph recorders/monitors (not supplied by EWC) for both diagnostic and monitoring purposes. The EWC: ECG Cable and Leadwire Systems are limited by the indications for use of the connected monitoring or diagnostic equipment. Such equipment is commonly located in hospitals, doctor's offices, emergency vehicles, as well as in home use.
6. Technological comparison to legally marketed predicate device: The EWC: ECG Cable and Leadwire Systems technological characteristics are similar in comparison to the Tronomed Patient Cable and Lead Wire Systems as identified in our response to 3 above.
7. Test Summary and Conclusion: The EWC: ECG Cable and Leadwire Systems was tested to the requirements of 21 CFR 898 and shown to comply with the performance standard. Although the EWC: ECG Cable and Leadwire System was not designed to comply, in total, with the ANSI/AAMI EC53-1995, voluntary standard covering ECG Cables and Leadwires, a number of the test identified in the standard were performed, as necessary to evaluate the overall cable design and utility. Simulated use testing was also completed on both the predicate device cable and leadwire system and compared against the same tests conducted on the EWC: ECG Cable and Leadwire Systems and no significant difference in performance could be observed. Based on the results of the engineering/design testing, along with the simulated use performance testing (comparison testing), it is felt that the EWC: Cable and Leadwire Systems performs as expected and compares well, in terms of overall performance to the selected Tronomed device (predicate device).
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Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo is circular and contains the words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" around the perimeter. In the center of the circle is an abstract symbol that resembles an eagle or bird in flight, composed of three stylized human profiles.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
SEP 2 3 1998
Mr. Timothy M. Davis Corporate Director RA/QA EWC Corporate Center N26 W23315 Paul Road Pewaukee, WI 53072-4061
K982817 Re: ECG Cable and Leadwire Systems Regulatory Class: II (two) Product Code: DSA Dated: August 6, 1998 Received: August 11, 1998
Dear Mr. Davis:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we 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). 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 reqistration, 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 (Premarket Approval), 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 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements. concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any
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obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device 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 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4648. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the requlation entitled, 2Misbranding by reference to premarket notification? (21CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.qov/cdrh/dsma/dsmamain.html".
Sincerely yours,
Thomas J. Callahan
Thomas J. Callahan, Ph.D. Director Division of Cardiovascular, Respiratory, and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## "Indication for Use Statement"
## INDICATION FOR USE PAGE
510(k) Number (if known): Unknown
Device Name: EWC: ECG Cable and Leadwire Systems
Indication for Use: The EWC: ECG Cable and Leadwire Systems are reusable electrode cable systems used to transmit signals from patient electrodes (not supplied by EWC) to various electrocardiograph recorders/monitors (not supplied by EWC) for both diagnostic and monitoring purposes. The EWC: ECG Cable and Leadwire Systems are limited by the indications for use of the connected monitoring or diagnostic equipment. Such equipment is commonly located in hospitals, doctor's offices, emergency vehicles, as well as in home use.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF REQUIRED)
Prescription Use:
(Per 21 CFR 801.109) or Over-
Concurrence of CDRH, Office of Device Evaluation (ODE)
Over-The-Counter Use
Dalk T. Wh
Division of Cardiovascular, Respiratory, and Neurological Devices 510(k) Number.
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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.