K142352 · Ross Medical Technology, Inc. · DSI · Mar 12, 2015 · Cardiovascular
Device Facts
Record ID
K142352
Device Name
CardiacLinx
Applicant
Ross Medical Technology, Inc.
Product Code
DSI · Cardiovascular
Decision Date
Mar 12, 2015
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.1025
Device Class
Class 2
Indications for Use
The CardiacLinx System is intended for outpatient use with remote clinician data analysis as well as for use within the physician office setting by the medical professional, or whenever it is required to assess a patient's ambulatory ECG data. This product allows a trained physician or healthcare professional to analyze continuous and intermittent measurements of heart rate and rhythm over several days. All asymptomatic events are transmitted to a central computer in the outpatient setting. This will enable the evaluation and documentation of arrhythmias, ischemic attacks, PQRST intervals, clinical and epidemiological research studies, and/or the evaluation of a patient's response after resuming occupational or recreational activities. The MCT, and resting 12-lead ECG modes are intended for use on adult patients only on the order of a physician or related licensed medical professional.
Device Story
CardiacLinx is a continuous real-time ECG monitor and arrhythmia detector for MCT, Holter, and resting 12-lead ECG modes. System inputs: heart signals captured via chest-worn sensors and an FDA-cleared ECG monitor. The monitor transmits data via Bluetooth to a Personal Mobile Device (PMD) running proprietary PMD software, which then relays data via cellular/Wi-Fi to a central MCT server. The server uses embedded ECG interpretation algorithms to process and store data. Clinicians use MCT client software at a central monitoring station to view real-time signals, automated interpretations, and generate reports. Used in physician offices, hospitals, rehabilitation facilities, or patient homes. Operated by medical professionals or under physician supervision. Enables remote assessment of heart rhythm, arrhythmia evaluation, and post-cardiac event monitoring; facilitates clinical decision-making through automated detection and remote data review.
Clinical Evidence
Bench testing only. Performance validated through software verification and validation (Moderate Level of Concern). Electrical safety and EMC testing performed per ANSI/AAMI EC11:1991, EN 60601-1, EN 60601-1-2, and EN 60601-2-25. Ambulatory and Home Environment Interference testing showed 100% agreement (1,000/1,000 samples) in clinical interpretation between two independent board-certified physicians. Data transmission reliability testing showed 97% of packets received within 0-5 seconds.
Technological Characteristics
System integrates an FDA-cleared patient-worn ECG monitor, a Bluetooth/cellular-enabled PMD, and a central server. Supports 12-lead ECG (8 channels). Connectivity via Bluetooth, 3G/4G/Wi-Fi. Software includes PMD, MCT server, and MCT client components. Employs embedded ECG interpretation algorithms. Complies with ANSI/AAMI EC11:1991, EN 60601-1, EN 60601-1-2, and EN 60601-2-25.
Indications for Use
Indicated for adult patients experiencing transient or non-transient symptoms suggesting cardiac arrhythmias (MCT mode) or palpitations, syncope, dizziness, arrhythmia, bradycardia, tachycardia, angina, ischemia, and paced ECG (Holter mode). Also indicated for acquiring/viewing/printing 12-lead ECG waveforms. Contraindicated for patients with potentially life-threatening arrhythmias requiring inpatient monitoring or those recommended for hospitalization.
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
Applied Cardiac Systems Cardiac Outpatient Real-time ECG (CORE) (K103706)
{0}------------------------------------------------
Image /page/0/Picture/13 description: The image shows the logo for the Department of Health & Human Services - USA. The logo is circular, with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. In the center of the circle is an abstract symbol that resembles a stylized human figure or head in profile.
Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
March 12, 2015
Ross Medical Technology, Inc. Alexander Chiu President 82 E. Allendale Road, Suite 8a Saddle River, New Jersey 07458
Re: K142352
> Trade/Device Name: CardiacLinx Regulation Number: 21 CFR 870.1025 Regulation Name: Arrhythmia Detector and Alarm (Including ST-Segment Measurement and Alarm) Regulatory Class: Class II
Product Code: DSI, DPS, DOK Dated: February 12, 2015 Received: February 13, 2015
Dear Alexander Chiu,
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
{1}------------------------------------------------
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); medical device reporting of medical devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (OS) 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 contact the Division of Industry and Consumer Education 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. 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
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 Industry and Consumer Education 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 vours.
Mitchell Stein
for Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
# Section 4: Indications for Use Statement
510(k) Number (if known): K142352
Device Name: CardiacLinx
#### Indications for Use:
The following Indications for Use are identified for the CardiacLinx device:
- 1. MCT Mode: For use on adult patients who experience transient or non-transient symptoms that may suggest cardiac arrhythmias. The arrhythmia detector and alarm device monitors an electrocardiogram and is designed to produce a visible notification when Ventricular Fibrillation/Flutter, Atrial Fibrillation/Flutter, Pause (Asystole), Bradycardia, or Tachycardia occurs.
- 2. Holter Mode: For use on adult patients experiencing palpitations, syncope, dizziness, arrhythmia, bradycardia, tachycardia, angina, ischemia and paced ECG.
- 3. Multi-Lead (Resting EKG) Mode: For use on adult patients for acquiring, storing and viewing/printing of up to twelve (12) leads of patient ECG waveforms through surface electrodes adhered to the patient's body.
- 4. The intended use locations for CardiacLinx are in a physician's office, hospital or rehabilitation facilities, patient's home, or similar use areas. It is intended to be used by or on the order of a physician or similarly qualified health care professional.
- 5. For general hospital or clinical use by medical professionals whenever an assessment of a patient's ambulatory ECG data is required. Allows for a trained physician or health care professional to download and analyze the data for review and to produce printed reports. This will enable the evaluation of arrhythmias, ischemic attacks, reporting of PQRST intervals, clinical and epidemiological research studies, evaluation of a patient response after resuming occupational or recreational activities (e.g., after myocardial infarction or cardiac surgery), and/or evaluation of patients with pacemakers. CardiacLinx is only available for use upon the order of a physician or other related licensed medical professional.
- 6. For use under the supervision of a qualified physician trained in ECG interpretation to record the electrical activity of the heart for the purpose of correlating resultant waveforms with the health of the heart muscle tissue structures.
{3}------------------------------------------------
#### Contraindications for Use:
CardiacLinx is not indicated for use by patients with potentially life-threatening arrhythmias who require inpatient monitoring and/or patients whom the attending physician recommends hospitalization.
Prescription Use ___X (Part 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)
For Concurrence of CDRH, Office of Device Evaluation (ODE)
{4}------------------------------------------------
Image /page/4/Picture/0 description: The image shows the logo for Ross Medical Technology. The logo has the word "ROSS" in gray and the word "MEDICAL" in light blue. Underneath the two words is a light blue line with a heartbeat symbol in the middle. Underneath the line is the word "TECHNOLOGY" in light blue.
# Section 5: 510(k) Summary
## Submitter
| Company: | Ross Medical Technology, Inc. |
|----------------|-------------------------------------------------------|
| Address: | 82 E. Allendale Road, Suite 8A Saddle River, NJ 07458 |
| Contact: | Dr. Alexander Chiu |
| Phone: | 973-874-9711 |
| Fax: | 510-629-6090 |
| E-mail: | chiu@rossmedco.com |
| Date Prepared: | August 20, 2014 |
### Device
| Trade Name: | CardiacLinx |
|-----------------|--------------------------------|
| Common Name: | Arrhythmia detector and alarm |
| Classification: | Detector and alarm, arrhythmia |
| Product Code: | DSI, DPS, DQK |
| Regulation: | 870.1025, 870.2340, 870.1425 |
| Class: | II, Special Controls |
## Predicate Devices
The following FDA cleared devices have been selected by Ross Medical Technology, Inc. ("RMT") as predicate devices of CardiacLinx in order to demonstrate substantial equivalence:
- 1. Applied Cardiac Systems Cardiac Outpatient Real-time ECG (CORE™) (herein, "The CORE"), cleared by the FDA under 510(k) number K103706; Product Classification Code DSI; Regulation 870.1025.
- 2. Pulse Biomedical, Inc. ("PBI") QRS Card™ S-T Segment Analysis Patient Monitoring System Modification (Device Trade Name "QRS Card BT"), cleared by the FDA under 510(k) number K100813; Product Classification Code DPS; Regulation 870.2340.
- 3. PBI Cardiology Suite 4.0TM Ambulatory ECG Analysis System (herein, "PBI Cardiology Suite"), cleared by the FDA under 510(k) number K042799; Product Classification Code DQK; Regulation 870.1425.
- 4. Cardiac Science Corporation Atria 3100/6100 (herein, "Atria 3100/6100"), cleared by the FDA under 510(k) number K060167; Product Classification Code DPS; Regulation 870.2340.
{5}------------------------------------------------
Image /page/5/Picture/0 description: The image shows the logo for Ross Medical Technology. The word "ROSS" is in a serif font and is in gray. To the right of the word "ROSS" is the word "MEDICAL" in a sans-serif font and in light blue. Underneath the words "ROSS MEDICAL" is the word "TECHNOLOGY" in a smaller sans-serif font and in gray.
#### Device Description
The CardiacLinx System is a continuous real-time ECG monitor and arrhythmia detector. It is a multipurpose device designed with the ability to collect ECG data from the patient in order to perform:
- 1. 2-lead Mobile Cardiac Outpatient Telemetry (MCT) for up to 30 days;
- 2. 24 hour or longer 3-lead Holter monitoring; or
- 3. Resting 12-lead ECG with interpretation.
The ambulatory device may be used on an outpatient basis with remote clinician data analysis whenever it is required to assess a patient's ambulatory ECG data (MCT and Holter modes), as well as for use within the physician office setting by the medical professional (resting 12-lead mode).
The product consists of monitoring equipment worn by the patient that transmits all asymptomatic and symptomatic events to a central computer monitoring center in the outpatient setting. The central computer monitoring center is equipped with personal computers running CardiacLinx System software intended for use only by qualified medical professionals and their staff.
CardiacLinx is comprised of three (3) main software components developed by Ross Medical Technology, consisting of:
- 1. The Ross Medical Technology PMD Software that can be run on a Personal Mobile Device ("PMD") with Bluetooth capabilities and a built-in cellular modem. The Personal Mobile Device is configured to process and transmit signals from an FDA cleared patient-worn ECG Monitor (also with Bluetooth capabilities);
- 2. The Ross Medical Technology MCT Server Software that can be run on a central server that receives, interprets (using embedded algorithms), and stores the ECG data from the PMD Software; and
- 3. The Ross Medical Technology MCT Client Software that can be run at a central computer monitoring center attended by trained medical professionals who can view the ECG data and interpretations.
{6}------------------------------------------------
Image /page/6/Picture/0 description: The image shows the logo for Ross Medical Technology. The word "ROSS" is in gray, and the word "MEDICAL" is in light blue. Underneath the words, there is a light blue line with a heartbeat symbol in the middle. Underneath the line, the word "TECHNOLOGY" is in light blue.
In addition to the three main software components manufactured by Ross Medical Technology. CardiacLinx includes third party components that are necessary to complete the functionality of the device. These third party components are:
- 1. An FDA cleared patient-worn ECG Monitor;
- 2. A Personal Mobile Device with Bluetooth capabilities and built-in cellular modem; and
- 3. Two embedded ECG Interpretation Algorithms found in other FDA cleared ECG analysis devices.
The CardiacLinx device integrates these third party components with RMT's proprietary software.
## Principles of Operation
The CardiacLinx System operates as follows:
- 1. Sensors attached to the patient's chest capture the heart signals of the patient.
- 2. The ECG Monitor connected to the sensors converts the heart signals to data and transmits it to the Bluetooth enabled Personal Mobile Device.
- 3. The PMD Software embedded on the Personal Mobile Device transmits the ECG data to the MCT Server Software via 3G, 4G, or Wi-Fi cellular networks.
- 4. The MCT Server Software interprets the ECG data using the embedded ECG Interpretation Algorithms and stores both the ECG data and interpretations in a database.
- 5. Technicians and/or physicians can monitor the heart signals of the patients in real-time using the MCT Client Software. The automatic interpretations can be viewed to assist in diagnosis and treatment plans.
- 6. The MCT Client Software is also used to manage Patients, Prescriptions, and Users of the System, as well as to produce Prescription Reports and MCT and Holter export records, if needed.
ECG data from all 12 leads are transmitted to the CardiacLinx MCT Server Software at all times while a prescription is active. Using this data, the MCT Client Software can produce three different final reports. These three reporting options can be chosen by the CardiacLinx MCT Client Software user, and represent the three different configurations below:
- 3 wire, ambulatory, grip electrode cable with signals from 1 or 2 leads, representing MCT Mode
- A 5 wire, ambulatory, grip electrode cable with signals from 3 leads, representing Holter Mode
- ് 10 wire, resting, grip electrode cable with signals from 12 leads, representing Resting Mode (8 channels; derived leads III, aVF, aVR, aVL)
{7}------------------------------------------------
There is no need to change the electrode wire configuration on the patient; all 10 wires will remain connected to the patient and all data will continuously transmit to the CardiacLinx MCT Server Software. The MCT Client Software user simply chooses which report to generate and has all data necessary to produce any report. For Resting Mode, although it is not clinically required for the Patient to be "resting", it is the nonetheless the User's (or medical provider's, or both) responsibility to determine if the patient is in the proper state to allow for a clinically acceptable ECG signal for a ten (10) second time frame.
### Intended Use
The CardiacLinx System is intended for outpatient use with remote clinician data analysis as well as for use within the physician office setting by the medical professional, or whenever it is required to assess a patient's ambulatory ECG data. This product allows a trained physician or healthcare professional to analyze continuous and intermittent measurements of heart rate and rhythm over several days. All asymptomatic events are transmitted to a central computer in the outpatient setting. This will enable the evaluation and documentation of arrhythmias, ischemic attacks, PQRST intervals, clinical and epidemiological research studies, and/or the evaluation of a patient's response after resuming occupational or recreational activities. The MCT, and resting 12-lead ECG modes are intended for use on adult patients only on the order of a physician or related licensed medical professional.
### Indications for Use
The following Indications for Use are identified for the CardiacLinx device:
- 1. MCT Mode: For use on adult patients who experience transient or non-transient symptoms that may suggest cardiac arrhythmias. The arrhythmia detector and alarm device monitors an electrocardiogram and is designed to produce a visible notification when Ventricular Fibrillation/Flutter, Atrial Fibrillation/Flutter, Pause (Asystole), Bradycardia, or Tachycardia occurs.
- 2. Holter Mode: For use on adult patients experiencing palpitations, syncope, dizziness, arrhythmia, bradycardia, tachycardia, angina, ischemia and paced ECG.
- 3. Multi-Lead (Resting EKG) Mode: For use on adult patients for acquiring, storing and viewing/printing of up to twelve (12) leads of patient ECG waveforms through surface electrodes adhered to the patient's body.
- 4. The intended use locations for CardiacLinx are in a physician's office, hospital or rehabilitation facilities, patient's home, or similar use areas. It is intended to be used by or on the order of a physician or similarly qualified health care professional.
{8}------------------------------------------------
Image /page/8/Picture/0 description: The image shows the logo for Ross Medical Technology. The word "ROSS" is in gray, and the word "MEDICAL" is in blue. Underneath the two words is a blue line that resembles an EKG. Underneath the line is the word "TECHNOLOGY" in a smaller, light gray font.
- 5. For general hospital or clinical use by medical professionals whenever an assessment of a patient's ambulatory ECG data is required. Allows for a trained physician or health care professional to download and analyze the data for review and to produce printed reports. This will enable the evaluation of arrhythmias, ischemic attacks, reporting of PORST intervals, clinical and epidemiological research studies, evaluation of a patient response after resuming occupational or recreational activities (e.g., after myocardial infarction or cardiac surgery), and/or evaluation of patients with pacemakers. CardiacLinx is only available for use upon the order of a physician or other related licensed medical professional.
- 6. For use under the supervision of a qualified physician trained in ECG interpretation to record the electrical activity of the heart for the purpose of correlating resultant waveforms with the health of the heart muscle tissue structures.
#### Contraindications for Use
CardiacLinx is not indicated for use by patients with potentially life-threatening arrhythmias who require inpatient monitoring and/or patients whom the attending physician recommends hospitalization.
#### Comparison of Technological Characteristics
A comparison of the technological characteristics between the CORE predicate device and the CardiacLinx device will be summarized here. Additional comparisons and further detail is provided in Section 12 of this 510(k) Premarket Notification.
In regards to the CORE, RMT makes the following observations and conclusions in comparing the technology and performance characteristics of the two devices.
- 1. The CORE offers multiple electrode configurations, whereas the CardiacLinx device is intended to have all 10 electrodes attached to the patient regardless of mode. This does not affect safety and effectiveness when compared to the CORE.
- 2. CardiacLinx does not have a manual trigger.
- 3. ECG Algorithms differ between two devices, with CardiacLinx appearing to offer a more robust library of ECG interpretations.
- 4. Physical differences between the two devices are inconsequential.
- 5. Both devices can operate within their Intended Use based on performance specifications.
RMT believes that the CardiacLinx device has essentially the same technology and performance characteristics as the CORE and is therefore substantially equivalent the CORE.
{9}------------------------------------------------
Image /page/9/Picture/0 description: The image shows the logo for Ross Medical Technology. The word "ROSS" is in a dark gray font, while "MEDICAL TECHNOLOGY" is in a light blue font. A blue line runs underneath the word "ROSS" and extends to the right, underneath the word "MEDICAL".
#### Performance Data
The following performance data are provided in support of the substantial equivalence determination made by Ross Medical Technology, Inc. for its CardiacLinx device.
#### Software Verification and Validation Testing
Software verification and validation testing were conducted and documentation is provided pursuant to FDA's Guidance for Industry and FDA Staff, "Guidance for the Content of Premarket Submissions for Software Contained in Medical Devices" (the "Software Guidance"). As discussed in Section 16 of the 510(k) Premarket Notification, the CardiacLinx System software was found to have a "Moderate" level of concern based on FDA's guidance document. A failure or latent flaw in the CardiacLinx System's software could directly result in a minor injury to the Patient. As a result, the software documentation provided in the 510(k) Premarket Notification will be commensurate with this Moderate Level of Concern classification as outlined in the Software Guidance.
#### Electrical Safety and Electromagnetic Compatibility
Ross Medical Technology, Inc. is citing the electrical safety and electromagnetic compatibility (EMC) testing already performed on the FDA cleared components of the CardiacLinx System. These components of the CardiacLinx System are in compliance with the following standards for electrical safety and electromagnetic compatibility:
- 1. ANSI/AAMI EC11:1991/(R) 2001, Diagnostic electrocardiograph devices.
- 2. EN 60601-1:2006; Medical electrical equipment Part 1: General requirements for basic safety and essential performance.
- 3. EN 60601-1-2:2007; Medical electrical equipment Part 1-2: General requirements for basic safety and essential performance - Collateral standard: Electromagnetic compatibility -Requirements and tests.
- 4. EN 60601-2-25:1995; Medical electrical equipment Part 2-25: Particular requirements for basic safety and essential performance of electrocardiographs.
Section 17 of the 510(k) Premarket Notification discusses electrical safety and EMC in more detail.
#### Additional Testing
To further demonstrate the effectiveness of the CardiacLinx System, RMT conducted additional tests that go beyond the testing discussed above. Table 5.1 below summarizes the additional tests that RMT performed on the CardiacLinx System.
Through the FDA's Pre-Submission process (Q130826), and documented in the approved meeting minutes (0130826/A001), it was determined that additional testing may be done for the expanded indication for use of the FDA cleared ECG Monitor to include the ambulatory and home environment. RMT conducted the Ambulatory and Home Environment Interference test (summarized below) to determine any clinically significant differences in ECG interpretation when
{10}------------------------------------------------
Image /page/10/Picture/0 description: The image shows the logo for Ross Medical Technology. The word "ROSS" is in gray, and the word "MEDICAL" is in light blue. Underneath the words is the word "TECHNOLOGY" in light blue.
the CardiacLinx system is used in the ambulatory and home environment. Special consideration in this test was given to test clinically significant artifacts from electronic sources and motion.
| Test Name | RMT Document Ref. | Purpose of Test | Results of Test | Comments |
|-------------------------------------------------------|-------------------|--------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------|
| Ambulatory<br>and Home<br>Environment<br>Interference | INTE-RMT-0201 | To test whether<br>ambulatory and home<br>environments would<br>produce a clinically<br>significant change in<br>ECG interpretation. | Device performed as intended.<br>100 out of 100 samples in each test<br>(1,000 out of 1,000 total samples)<br>showed identical clinical<br>interpretation from two<br>independent board certified<br>physicians. | Test Report<br>provided in<br>Section 18 |
| Data<br>Transmission | SWTP-RMT-0205 | Test reliability of data<br>transmission from PMD<br>to MCT Server Software. | 97.00% of data packets received by<br>the MCT Server Software between<br>0 and 5 seconds. | Test Report<br>provided in<br>Section 18 |
Table 5.1: Additional Testing Performed
## Substantial Equivalence Conclusion
The CardiacLinx device essentially has the same intended use, operating principles, and technical characteristics as the predicate devices. The FDA cleared components of the CardiacLinx System are unchanged. Standards testing cited by RMT is substantially equivalent to standards testing performed on the predicate devices, and in some cases identical.
Any differences in Intended Use, Indications for Use, technology, performance, or testing between the predicate devices and CardiacLinx are adequately explained and justified. These differences do not pose additional concerns related to the safety and effectiveness of the CardiacLinx device. Supplemental tests and information is provided in the 510/k) Premarket Notificiently justify this claim, with specific attention brought to Sections 16, 17, and 18 of this Premarket Notification. In Sections 17 and 18, concerns about using the ECG Monitor in the ambulatory and home environment are addressed and alleviated.
Based on the comparisons made to the predicate devices and the supplemental data provided, the CardiacLinx device is substantially equivalent to the predicate devices.
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
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.