CG-5108 ACT-3L CONTINUOUS ECG MONITOR AND ARRHYTHMIA DETECTOR
Applicant
Card Guard Scientific Survival , Ltd.
Product Code
DSI · Cardiovascular
Decision Date
Apr 6, 2011
Decision
SESE
Submission Type
Special
Regulation
21 CFR 870.1025
Device Class
Class 2
Indications for Use
The CG-6108 ACT-3L Continuous ECG Monitor and Arrhythmia Detector is intended for use by patients who experience transient symptoms that may suggest cardiac arrhythmia. The device continuously monitors patient ECG, automatically generates an alarm triggered by an arrhythmia detection algorithm, or generates an alarm manually triggered by the patient, and transmits the recorded data transtelephonically to a monitoring center. The monitoring center provides the ECG data to the medical practitioner for evaluation.
Device Story
The CG-6108 ACT-3L is a chest-worn ECG monitor for home use. It acquires ECG signals via a 4-electrode harness and transmits them via Bluetooth to a mobile computing device (e.g., cell phone). A proprietary application on the mobile device processes the signal using an arrhythmia detection algorithm. Upon detection of an event (Atrial Fibrillation, Tachycardia, Bradycardia, or Pause) or manual patient trigger, the device transmits data via cellular link or landline to a remote Monitoring Center. Medical professionals at the center analyze the data to inform clinical decision-making. The device allows for monitoring of patients with Implanted Cardioverter Defibrillators (ICD) under specific precautions. The system benefits patients by providing continuous cardiac surveillance and rapid transmission of symptomatic events for physician review.
Clinical Evidence
No clinical data. Bench testing only. Testing included ACT-3L High Voltage Pulse Test (ENTR-0112) and ACT-3L EMC Dipole Antenna Test (ENTR-0113) to support labeling changes regarding ICD compatibility.
Technological Characteristics
Chest-worn sensor with 4 electrodes, 3.6V AA battery, Bluetooth transceiver, and buzzer. Mobile device interface. Conforms to ANSI/AAMI EC57:1998, ANSI/AAMI EC38:1998, ISO 14971:2007, IEC 60601-1 (2nd ed), IEC 60601-1-2, IEC 60601-1-4, IEC 62304:2006, and ISO 15223:2000.
Indications for Use
Indicated for patients experiencing transient symptoms suggestive of cardiac arrhythmia. Used for continuous ECG monitoring, automated arrhythmia detection, and manual alarm triggering with transtelephonic data transmission to a monitoring center for professional evaluation.
Regulatory Classification
Identification
The arrhythmia detector and alarm device monitors an electrocardiogram and is designed to produce a visible or audible signal or alarm when atrial or ventricular arrhythmia, such as premature contraction or ventricular fibrillation, occurs.
Special Controls
*Classification.* Class II (special controls). The guidance document entitled “Class II Special Controls Guidance Document: Arrhythmia Detector and Alarm” will serve as the special control. See § 870.1 for the availability of this guidance document.
Predicate Devices
Unmodified version of CG-6108 ACT-3L Continuous ECG Monitor and Arrhythmia Detector (K101703)
Submission Summary (Full Text)
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Image /page/0/Picture/0 description: The image shows the logo for Card Guard Scientific Survival LLC. The words "CARD GUARD" are in bold, uppercase letters, with a line underneath. Below that, in smaller letters, it says "Scientific Survival LLC". To the right of the text is a graphic that looks like an EKG readout.
APR - 6 2911
# 510(k) Summary: Modified CG-6108 ACT-3L Continuous ECG Monitor and Arrhythmia Detector
Introduction
This document contains the 510(k) summary for the modified CG-6108 ACT-3L Continuous ECG Monitor and Arrhythmia Detector. The content of this summary is based on the requirements of 21 CFR Section 807.92(c).
| Submitter | Card Guard Scientific Survival Ltd., | |
|-----------------------------------------|------------------------------------------------------------------------------------------------------------------------------|--------------------|
| Establishment<br>Registration<br>Number | 9681879 | |
| Address | 2 Pekeris St., P.O.B. 527, Rehovot, 76100, Israel | |
| Contact person: | Asher Kassel, Director of RA & QA, Card Guard Scientific Survival Ltd. | |
| Phone: | 972-8-9484010<br>(direct) | Fax: 972-8-9484044 |
| E-mail: | asherk@cardguard.com | |
| Date Prepared: | February 18, 2011 | |
| Predicate device | Unmodified version of CG-6108 ACT-3L Continuous ECG Monitor and<br>Arrhythmia Detector, cleared in K101703 on July 13, 2010. | |
| Trade Name: | CG-6108 ACT-3L Continuous ECG Monitor and Arrhythmia Detector | |
| Classification: | Detector and alarm, arrhythmia /Transmitters and receivers,<br>electrocardiograph, telephone | |
| Product Code: | DSI, DXH | |
| Regulation No: | 870.1025, 870.2920 | |
| Class: | II | |
# Device Description
The CG-6108 ACT-3L Continuous ECG Monitor and Arrhythmia Detector is designed for selftesting by patients at home and for analysis by medical professionals at a remote Monitoring Center.
The chest-worn sensor is used for the acquisition, recording, and transmission of the ECG signal. The device is equipped with 4 electrodes on a harness and it houses a 3.6V AA battery, a Bluetooth transceiver and a buzzer.
The ECG signals are transmitted via Bluetooth to a handheld device with a proprietary interactive application, configured to process and transmit the ECG recordings. The handheld device is a mobile computing device with a display and a touch input such as a cell phone. It has sufficient memory and processing capability to run the proprietary application.
When an arrhythmia event is detected, the handheld device transmits the recorded ECG information automatically via cellular link, to the Monitoring Center for professional analysis. When cellular service is unavailable the patient has an option to transmit via a landline telephone.
The Patient and Physician manuals are being modified to change a warning to allow the use of the ACT-3L on patients with an Implanted Cardioverter Defibrillator (ICD) if specific precautions are observed.
# Indications for Use
The CG-6108 ACT-3L Continuous ECG Monitor and Arrhythmia Detector is intended for use by patients who experience transient symptoms that may suggest cardiac arrhythmia. The device continuously monitors patient ECG, automatically generates an alarm triggered by an arrhythmia detection algorithm, or generates an alarm manually triggered by the patient, and transmits the
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Image /page/1/Picture/1 description: The image shows the words "CARD GUARD" in bold, black letters. Underneath the words is a thin, black line. Below the line are the words "Scientific Survival LTD" in a smaller font. To the right of the words is a line graph with a sharp peak.
Special 510(k) for CG-6108 ACT-3L Continuous ECG monitor and Arrhythmia Detector Section 7: 510(k) Summary
recorded data transtelephonically to a monitoring center. The monitoring center provides the ECG data to the medical practitioner for evaluation.
### Summary of the Technological Characteristics / Principles of Operation
The technological characteristics and principles of operation of the modified device are the same as the predicate device. The chest-worn ECG sensor transmits signals via Bluetooth to the handheld device equipped with the Medical Application, which incorporates an algorithm for detection of cardiac events: Atrial Fibrillation, Tachycardia, Bradycardia and Pause. A detected artifact triggers transmission of the signal to the Monitoring Center for analysis.
### Non-clinical performance data for the CG-6108 ACT-3L
In order to support the labeling change the following testing has been performed:
- ACT-3L High Voltage Pulse Test, Card Guard document # ENTR-0112 .
- ACT-3L EMC Dipole Antenna Test, Card Guard document # ENTR-0113 .
#### Performance Standards:
This 510(k) submission was written in accordance with the FDA Guidance document "Class II Special Controls Guidance Document: Arrhythmia Detector and Alarm, October 28, 2003' and the device conforms to the applicable performance requirements contained in and referenced in this document. In addition, this submission was prepared in accordance with "Guidance for the Content of Premarket Submissions for Software Contained in Medical Devices, May 11 2005". The design of the CG-6108 ACT-3L conforms to the following voluntary standards:
- ANSI/AAMI EC57:1998 (R) 2008: Testing and reporting performance results of cardiac rhythm . and ST segment measurement algorithms (Cardiovascular)
- ANSI/AAMI EC38:1998 Medical electrical equipment Part 2-47: Particular requirements . for the safety, including essential performance, of ambulatory electrocardiographic systems (Cardiovascular)
- . ISO 14971:2007: Medical devices - application of risk management to medical devices (General)
- IEC 60601-1:1988, 2nd edition, Part 1, plus A1:1991 and A2:1995: Medical electrical . equipment; Part 1: General requirements for safety
- IEC 60601-1-2: 2001, plus A1:2004, Part 1: Medical electrical equipment, Part 1-2: General . requirements for safety - Collateral standard: Electromagnetic compatibility - Requirements and tests
- . IEC 60601-1-4:2000, Medical electrical equipment - Part 1:General requirements for safety; Part 1-4: Collateral standard: Programmable electrical medical systems
- IEC 62304:2006: Medical device software Software life cycle processes .
- . ISO 15223:2000: Medical devices - Symbols to be used with medical device labels, labeling and information to be supplied - Part 1: General requirements
#### Substantial Equivalence:
The modified CG-6108 ACT-3L device is substantially equivalent with respect to the indications for use, technological characteristics and performance characteristics to the identified legally marketed predicate device.
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Image /page/2/Picture/1 description: The image shows the logo for the Department of Health & Human Services USA. The logo is a circular seal with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" arranged around the perimeter. Inside the circle is an emblem of an eagle with its wings spread, symbolizing the department's mission to protect the health of all Americans.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
Card Guard Scientific Survival Ltd c/o Mr. Asher Kassel Vice President of Operations 2 Pekeris St. Rehovot, 76100 Israel
APR - 6 2011
Re: K110499
Trade/Device Name: CG-6108-3L Continuous ECG Monitor and Arrhythmia Detector Regulation Number: 21 CFR 870.1025
Regulation Name: Arrhythmia detection or alarms (including ST-segment measurement and alarm)
Regulatory Class: Class II Product Code: DSI and DXH Dated: February 18, 2011 Received: February 22, 2011
Dear Mr. Kassel:
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.
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.
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Page 2 – Mr. Asher Kassel
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); 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. This letter will allow you to begin marketing your device as described in your Section 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), please contact the Office of Compliance at 240-276-0120. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours,
for
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): _ K 1/0499
Device Name: CG-6108 ACT-3L Continuous ECG Monitor and Arrhythmia Detector
# Indications for Use:
The CG-6108 ACT-3L Continuous ECG Monitor and Arrhythmia Detector is intended for use by patients who experience transient symptoms that may suggest cardiac arrhythmia. The device continuously monitors patient ECG, automatically generates an alarm triggered by an arrhythmia detection algorithm, or generates an alarm manually triggered by the patient, and transmits the recorded data transtelephonically to a monitoring center. The monitoring center provides the ECG data to the medical practitioner for evaluation.
Prescription Use _____________________________________________________________________________________________________________________________________________________________ (Part 21 CFR 801 Subpart D)
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AND/OR
Over-The-Counter Use _________________________________________________________________________________________________________________________________________________________ (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
| (Division Sign-Off) |
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| Division of Cardiovascular Devices |
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| 510(k) Number | k110499 |
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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.