The ECG Check is intended for self-testing by patients at home. This 1-lead cardiac monitor allows remote patients to display and transmit their ECG data to medical professionals via a communication device to a remote server. Specifically, the ECG Check is indicated for patients who are concerned about their heart rhythm and have experienced the following symptoms that are suggestive of abnormal heart rhythms: - Skipped Beats - Pounding Heart (Palpitations) - Heart Racing or Irregular Pulse - Lightheadedness or Faintness - History of Arrhythmias
Device Story
ECG Check (Model ECG01-4S) is a 1-lead personal ECG event monitor; records 30-second ECG segments. Device interfaces with iPhone via secure Bluetooth; transmits data to ECG Check web center. Intended for home use by patients to manage heart rate/rhythms. Web-based engine performs standard ECG analysis; provides objective assessment (Green/Yellow/Red stoplight output). With physician prescription, users view waveforms on iPhone app, trend results, and generate reports for caregivers. Without prescription, users cannot view waveforms. Facilitates remote monitoring of symptoms (palpitations, skipped beats, etc.) by medical professionals. Benefits include long-term rhythm management and improved communication between patients and caregivers/technicians.
Clinical Evidence
Bench testing only. Device demonstrated safety and essential performance per IEC 60601-1 and IEC 60601-2-47. Biocompatibility testing performed per ISO 10993-5 (cytotoxicity) and ISO 10993-10 (maximization and intracutaneous reactivity). No clinical data provided.
Technological Characteristics
1-lead cardiac monitor; Bluetooth connectivity to iPhone; web-based analysis engine. Complies with IEC 60601-1, IEC 60601-2-47, ISO 10993-5, and ISO 10993-10. Class II device (21 CFR 870.2920).
Indications for Use
Indicated for patients at home concerned about heart rhythm experiencing symptoms including skipped beats, palpitations, racing/irregular pulse, lightheadedness, faintness, or history of arrhythmias.
Regulatory Classification
Identification
A telephone electrocardiograph transmitter and receiver is a device used to condition an electrocardiograph signal so that it can be transmitted via a telephone line to another location. This device also includes a receiver that reconditions the received signal into its original format so that it can be displayed. The device includes devices used to transmit and receive pacemaker signals.
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## SECTION 5: 510(k) SUMMARY
# FEB 1 4 2013
| | 510(k) Summary |
|------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------|
| Date Prepared: | January 13, 2013 |
| Submitter: | Cardiac Designs, LLC<br>3293 Niblick Drive<br>Park City, UT 84098<br>Phone: 1 (512) 582-2453<br>Facsimile: 1 (713) 589-7964 |
| Contact: | Karim Marrouche, Managing Director<br>1 (512) 582-2453 |
| Trade/Proprietary<br>Name of Device: | ECG CHECK |
| Common Name<br>of Device: | Transmitters And Receivers, Electrocardiograph, Telephone |
| Classification: | Class II per 21 CFR 870.2920, Telephone<br>electrocardiograph transmitter and receiver, Product Code<br>DXH |
| Legally Marketed<br>Predicate<br>Device: | PMP4 SelfCheck™ ECG (K042254), manufactured by Card<br>Guard Scientific Survival, Ltd. |
## Description of New ECG CHECK Device:
rill
The ECG Check model ECG01-4S is a personal 1 lead ECG Event Monitor specifically designed to operate with an iPhone 4S handset and allows transmissions to the ECG Check web center. Future iterations will be designed for other handsets, but will not change the fundamental features and capabilities described herein. It will record a preselected amount of user ECG activity, as directed by the user. Typical configuration is to record 30 seconds of ECG per event.
The ECG Check is indicated for monitoring symptoms that may suggest irregular or abnormal heart rhythms. The ECG Check, when used in conjunction with the ECG Check web center, uses standard analysis of ECG by the web-based engine for objective assessment of the user in terms similar to a stoplight (Green, Yellow, Red). With a physician prescription, the user will be provided access to be able to trend their results and generate reports to provide to their physician or other caregivers. The symptoms may include: skipped beats, palpitations, racing
C.2.1
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heart, fainting, lightheadedness, irregular rate, or history of other related heart abnormalities.
While performing the recording, the results are continuously sent to the iPhone by secure Bluetooth connection technology and, with a physician prescription, displayed for quality and observation purposes on the iPhone ECG Check application. Users without a physician prescription will not be able to view the waveform. The data can then be stored locally and/or transmitted to the ECG Check web center for analysis and assessment by qualified professionals. The ECG Check web center provides privacy and protection for user medical information and the ability to interact with Cardiac Designs, LLC technicians and engineers, as well as with their own caregivers.
The ECG Check Model ECG01-4S is intended for users that seek to manage their heart rate and rhythms over long periods of time. Additional features will be added to involve health care professionals in the service, with the intent to ensure that the device remains consumer focused and non-diagnostic.
### Indications for Use of the New Device:
The ECG CHECK is intended for self-testing by patients at home. This 1-lead cardiac monitor allows remote patients to display and transmit their FCG data to medical professionals via a communication device to a remote server.
Specifically, the ECG CHECK is indicated for patients who are concerned about their heart rhythm and have experienced the following symptoms that are suggestive of abnormal heart rhythms:
- Skipped Beats .
માં આવેલું એ તાલુકામાં આવેલું એક ગામનાં મુખ્યત્વે આવેલું એક ગામનાં લોકોનો મુખ્ય વ્યવસાય ખેતી, ખેતમજૂરી તેમ જ પશુપાલન છે. આ ગામનાં મુખ્યત્વે આવેલું એક ગામનાં લોકોનો મુખ્ય વ
- Pounding Heart (Palpatations)
- Heart Racing or Irregular Pulse
- Lightheadedness or Faintness
- History of Arrhythmias .
### Comparison of the Technological Features of the New (Modified) Device and Predicate Device:
The new ECG CHECK indications for use are equivalent to the predicate PMP4 SelfCheck™ ECG device. The new ECG CHECK and the predicate PMP4 SelfCheck™ ECG device have identical patient populations and places of use. In addition, the parameters that are measured by the new ECG CHECK device are identical to those measured by the predicate PMP4 SelfCheck™ ECG device.
There are few differences between the new ECG CHECK device and the predicate PMP4 SelfCheck™ ECG device. The main difference is as follows:
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#### Leads:
The new ECG CHECK device operates with 1 lead. The predicate PMP4 SelfCheck™ ECG device can operate with 1 lead or with 12 leads. Cardiac Designs, LLC seeks substantial equivalence only to the 1 lead functionality of the predicate PMP4 SelfCheck™ ECG device. Comparisons, testing, and conclusions will be drawn based only on the 1 lead configuration.
#### Testing:
The ECG CHECK device successfully passed safety and essential performance testing as required by:
IEC 60601-1
IEC 60601-2-47 - Particular requirements for the safety, including essential performance, of ambulatory electrocardiographic systems. ISO 10993-5:2009 Cytotoxicity - MEM Elution Test
ISO 10993-10:2010 Maximization Test for Delayed Hypersensitivity
ISO 10993-10:2010 Intracutaneous (Intradermal) Reactivity Test
#### Conclusion:
The conclusions drawn from the specifications and performance testing of the new ECG CHECK device demonstrate that the new ECG CHECK device is at least as safe and as effective and performs as well as or better than the Card Guard Scientific Survival, Ltd. predicate PMP4 SelfCheck™ ECG (K012254). For these reasons, we believe the new ECG CHECK device is substantially equivalent to the predicate device.
Signed,
Karin. Marranaka . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Karim Marrouche Managing Director
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#### DEPARTMENT OF HEALTH & HUMAN SERVICES
#### Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
### February 14, 2013
Cardiac Designs, LLC c/o Mr. Karim Marrouche Managing Director 3293 Niblick Drive Park City, UT 80498
Re: K122184
> Trade/Device Name: ECG Check Regulatory Number: 21 CFR 870.2920 Regulation Name: Telephone Electrocardiograph Transmitters and Receivers Regulatory Class: II (two) Product Code: 74 DXH Dated: January 18, 2013 Received: January 22, 2013
Dear Mr. Marrouche:
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
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Page 2 - Mr. Karim Marrouche
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-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 go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 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 Small Manufacturers; International and Consumer Assistance 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 yours,
Owen P. Faris -S
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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## SECTION 4: INDICATIONS FOR USE
K122184 510(k) Number (if known): _
Device Name: ECG CHECK
#### Indications for Use:
The ECG Check is intended for self-testing by patients at home. This 1-lead cardiac monitor allows remote patients to display and transmit their ECG data to medical professionals via a communication device to a remote server.
Specifically, the ECG Check is indicated for patients who are concerned about their heart rhythm and have experienced the following symptoms that are suggestive of abnormal heart rhythms:
- . Skipped Beats
- . Pounding Heart (Palpitations)
- . Heart Racing or Irregular Pulse
- Lightheadedness or Faintness .
- . History of Arrhythmias
Prescription Use X (21 CFR 801 Subpart D)
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)
Page 1 of 1
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.