K Number
K240029
Device Name
Zio AT® device (A100A1001)
Date Cleared
2024-10-21

(291 days)

Product Code
Regulation Number
870.1025
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP Authorized
Intended Use
The Zio AT device is intended to capture and transmit symptomatic and asymptomatic cardiac events and record continuous electrocardiogram (ECG) data for long-term monitoring. It is indicated for use on patients 18 years or older who may be asymptomatic or who may suffer from transient symptoms such as palpitations, shortness of breath, dizziness, light-headedness, pre-syncope, syncope, fatigue, or anxiety. It is not intended for use on critical care patients.
Device Description
The Zio AT® Electrocardiogram (ECG) Monitoring System is intended for continuous, long-term monitoring of a patient's ECG data with the ability to provide symptomatic and asymptomatic transmissions of potential arrhythmias during wear time. The Zio AT ECG Monitoring System enables ambulatory Mobile Cardiac Telemetry (MCT) services for non-critical care patients by providing the following devices for use. The Zio AT device consists of the Zio AT patch and Zio AT wireless gateway. The Zio AT patch is a single-use ECG monitor applied to the patient's chest, in-clinic or at home, and worn for up to 14 days without any required patient interaction for maintenance, such as replacing or charging a battery. The patch continuously records ECG data and transmits symptomatic and asymptomatic cardiac events through the Zio AT wireless gateway during the wear period. After the wear period concludes, the patient removes and returns the patch to the monitoring center, an Independent Diagnostic Testing Facility (IDTF), for analysis and end-of-wear reporting. The Zio AT wireless gateway securely receives ECG data from the Zio AT patch using Bluetooth technology. The gateway securely transmits ECG data through cellular technology for subsequent processing.
More Information

No
The summary describes a device for capturing and transmitting ECG data and cardiac events, but it does not mention any AI or ML components for analysis or interpretation. The analysis and reporting are performed at a monitoring center.

No
The device is described as an ECG monitoring system intended to capture and transmit cardiac events and record continuous ECG data for long-term monitoring, not to treat or alleviate a medical condition.

Yes
The device is intended to capture and transmit cardiac events and record continuous ECG data for long-term monitoring, and the patch is returned to a monitoring center for analysis and end-of-wear reporting. This indicates its purpose is to aid in the diagnosis of cardiac conditions.

No

The device description explicitly states that the Zio AT device consists of both a Zio AT patch (hardware) and a Zio AT wireless gateway (hardware), in addition to software components.

Based on the provided information, the Zio AT device is not an In Vitro Diagnostic (IVD).

Here's why:

  • IVDs are used to examine specimens derived from the human body. The Zio AT device directly monitors the patient's electrical activity (ECG) on their chest. It does not analyze blood, urine, tissue, or other bodily fluids or substances.
  • The intended use is for capturing and transmitting cardiac events and recording continuous ECG data. This is a physiological measurement, not an in vitro analysis of a specimen.
  • The device description focuses on the hardware (patch and gateway) and the process of recording and transmitting ECG data. There is no mention of reagents, assays, or laboratory procedures typically associated with IVDs.

The Zio AT device falls under the category of a medical device that performs physiological monitoring.

N/A

Intended Use / Indications for Use

The Zio AT device is intended to capture and transmit symptomatic and asymptomatic cardiac events and record continuous electrocardiogram (ECG) data for long-term monitoring. It is indicated for use on patients 18 years or older who may be asymptomatic or who may suffer from transient symptoms such as palpitations, shortness of breath, dizziness, light-headedness, pre-syncope, syncope, fatigue, or anxiety. It is not intended for use on critical care patients.

Product codes

QYX, DSH, DXH, DSI

Device Description

The Zio AT® Electrocardiogram (ECG) Monitoring System is intended for continuous, long-term monitoring of a patient's ECG data with the ability to provide symptomatic and asymptomatic transmissions of potential arrhythmias during wear time.

The Zio AT ECG Monitoring System enables ambulatory Mobile Cardiac Telemetry (MCT) services for non-critical care patients by providing the following devices for use.

  • The Zio AT device consists of the Zio AT patch and Zio AT wireless gateway:
    • Zio AT Patch
      The Zio AT patch is a single-use ECG monitor applied to the patient's chest, in-clinic or at home, and worn for up to 14 days without any required patient interaction for maintenance, such as replacing or charging a battery.
      The patch continuously records ECG data and transmits symptomatic and asymptomatic cardiac events through the Zio AT wireless gateway during the wear period.
      After the wear period concludes, the patient removes and returns the patch to the monitoring center, an Independent Diagnostic Testing Facility (IDTF), for analysis and end-of-wear reporting.
    • Zio AT Wireless Gateway
      The Zio AT wireless gateway securely receives ECG data from the Zio AT patch using Bluetooth technology. The gateway securely transmits ECG data through cellular technology for subsequent processing.

The Zio AT patch and wireless gateway underwent some device modifications since its last 510(k) clearance, K163512. The intent of this 510(k) submission is to describe these changes and demonstrate substantial equivalence with the last cleared device.

Mentions image processing

Not Found

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

Not Found

Anatomical Site

patient's chest

Indicated Patient Age Range

18 years or older

Intended User / Care Setting

In clinic; At home

Description of the training set, sample size, data source, and annotation protocol

Not Found

Description of the test set, sample size, data source, and annotation protocol

Not Found

Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)

Nonclinical testing included:

  • System performance testing
  • Biocompatibility testing
  • Firmware verification testing
  • Electrical safety and EMC testing

The scope of the nonclinical testing summarized in Table 2 demonstrates that the Zio AT device is in conformance with FDA recognized consensus standards and FDA guidance documents. No clinical testing was performed in support of this premarket notification. The results of the nonclinical testing performed demonstrate that the Zio AT device meets the requirements of established conformance standards and performance specifications necessary for its intended use, and does not raise new questions of safety or effectiveness as compared to the predicate device. The Zio AT device is substantially equivalent to the predicate device.

Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)

Not Found

Predicate Device(s)

K163512

Reference Device(s)

Not Found

Predetermined Change Control Plan (PCCP) - All Relevant Information

Not Found

§ 870.1025 Arrhythmia detector and alarm (including ST-segment measurement and alarm).

(a)
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.(b)
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.

0

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October 21, 2024

iRhythm Technologies, Inc. Vishal Kanani Manager, Regulatory Affairs 699 8th Street Suite 600 San Francisco, California 94103

Re: K240029

Trade/Device Name: Zio AT® device (A100A1001) Regulation Number: 21 CFR 870.1025 Regulation Name: Arrhythmia Detector And Alarm (Including ST-Segment Measurement And Alarm) Regulatory Class: Class II Product Code: QYX, DSH, DXH, DSI Dated: October 15, 2024 Received: October 15, 2024

Dear Vishal Kanani:

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 (the 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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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.

Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device"

1

(https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).

Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30. Design controls; 21 CFR 820.90. Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review. the OS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).

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); medical device reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.

All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rue"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-devices/device-advicecomprehensive-regulatory-assistance/unique-device-identification-system-udi-system.

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.

For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).

2

Sincerely,

Jennifer W. Shih -S

Jennifer Kozen Assistant Director Division of Cardiac Electrophysiology, Diagnostics, and Monitoring Devices Office of Cardiovascular Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health

Enclosure

3

Indications for Use

Submission Number (if known)

K240029

Device Name

Zio AT® device (A100A1001)

Indications for Use (Describe)

The Zio AT device is intended to capture and transmit symptomatic and asymptomatic cardiac events and record continuous electrocardiogram (ECG) data for long-term monitoring. It is indicated for use on patients 18 years or older who may be asymptomatic or who may suffer from transient symptoms such as palpitations, shortness of breath, dizziness, light-headedness, pre-syncope, syncope, fatigue, or anxiety. It is not intended for use on critical care patients.

Type of Use (Select one or both, as applicable)

Prescription Use (Part 21 CFR 801 Subpart D)

Over-The-Counter Use (21 CFR 801 Subpart C)

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iRhythm Technologies, Inc.

Traditional 510(k): 510(k) Summary

510(k) Notification K240029

l. General Information

Applicant:

iRhythm Technologies, Inc. 699 8" Street, Suite 600 San Francisco, CA 94103 USA Phone: 415-632-5700 Fax: 415-632-5701

Contact Person:

Vishal Kanani Sr. Manager, Regulatory Affairs Phone: 213-400-0963 Email: vishal.kanani@irhythmtech.com

Alternate Contact Person:

Qiuwei Feng Vice President, Regulatory Affairs Phone: 267-798-6382 Email: giuwei.feng@irhythmtech.com

Date Prepared: October 11, 2024

II. Device Information

Trade Name: Zio AT®

Generic/Common Name:

  • Outpatient Cardiac Telemetry

Classification Names:

  • Medical magnetic tape recorder [21CFR§870.2800]
  • Telephone electrocardiograph transmitter and receiver [21CFR§870.2920]
  • l Arrhythmia detector and alarm (including ST-segment measurement and alarm) [21CFR§870.1025]

Regulatory Class:

  • . Class II (Special Controls)

Product Codes:

  • QYX, Outpatient Cardiac Telemetry
  • . DSH, Recorder, Magnetic Tape, Medical
  • DXH, Transmitters and Receivers, Electrocardiograph, Telephone
  • DSI, Detector and Alarm, Arrhythmia

5

iRhythm Technologies, Inc.

Traditional 510(k): 510(k) Summary

III. Predicate Devices

The following predicate device has been selected:

  • . iRhythm Technologies, Inc. Zio® AT ECG Monitoring Device [K163512]

IV. Device Description

The Zio AT® Electrocardiogram (ECG) Monitoring System is intended for continuous, long-term monitoring of a patient's ECG data with the ability to provide symptomatic and asymptomatic transmissions of potential arrhythmias during wear time.

The Zio AT ECG Monitoring System enables ambulatory Mobile Cardiac Telemetry (MCT) services for non-critical care patients by providing the following devices for use.

  • . The Zio AT device consists of the Zio AT patch and Zio AT wireless gateway:
    • Zio AT Patch o

The Zio AT patch is a single-use ECG monitor applied to the patient's chest, in-clinic or at home, and worn for up to 14 days without any required patient interaction for maintenance, such as replacing or charging a battery.

The patch continuously records ECG data and transmits symptomatic and asymptomatic cardiac events through the Zio AT wireless gateway during the wear period.

After the wear period concludes, the patient removes and returns the patch to the monitoring center, an Independent Diagnostic Testing Facility (IDTF), for analysis and end-of-wear reporting.

  • Zio AT Wireless Gateway O
    The Zio AT wireless gateway securely receives ECG data from the Zio AT patch using Bluetooth technology. The gateway securely transmits ECG data through cellular technology for subsequent processing.

The Zio AT patch and wireless gateway underwent some device modifications since its last 510(k) clearance, K163512. The intent of this 510(k) submission is to describe these changes and demonstrate substantial equivalence with the last cleared device.

V. Indications for Use

The Indications for Use statement for the Zio AT device is as follows:

The Zio AT device is intended to capture and transmit symptomatic and asymptomatic cardiac events and record continuous electrocardiogram (ECG) data for long-term monitoring. It is indicated for use on patients 18 years or older who may be asymptomatic or who may suffer from transient symptoms such as palpitations, shortness of breath, dizziness, light-headedness, pre-syncope, syncope, fatigue, or anxiety. It is not intended for use on critical care patients.

6

  • VI. Comparison of Technological Characteristics with Predicate Devices (Substantial Equivalence) The subject and predicate device have the same intended use and similar indications for use statements. The difference in technological characteristics between the subject and predicate Zio AT device are minor and do not raise different questions of safety and effectiveness. Bench testing (non-clinical tests) performed on the subject Zio AT device using the same test methodologies as the predicate, did not identify any issues and further confirm that the device performs as intended.
    A comparison table outlining the differences and similarities between the subject device, the Zio AT device, and the predicate device is provided in Table 1.
Table 1: Substantial Equivalence Summary Table
FeatureSubject Device:Predicate Device:
Zio AT deviceZio AT ECG Monitoring System
(K163512)
General Characteristics
ClassificationClass IIClass II
Classification Regulations21CFR§870.2800;
21CFR§870.2920;
21CFR§870.102521CFR§870.2800;
21CFR§870.1425;
21CFR§870.2920;
21CFR§870.1025
Product CodeQYX, DSH, DXH, DSIQYX, DSH, DQK, DXH, DSI
Indications for UseThe Zio AT device is intended to
capture and transmit
symptomatic and asymptomatic
cardiac events and record
continuous electrocardiogram
(ECG) data for long-term
monitoring. It is indicated for
use on patients 18 years or
older who may be
asymptomatic or who may
suffer from transient symptoms
such as palpitations, shortness
of breath, dizziness, light-
headedness, pre-syncope,
syncope, fatigue, or anxiety. It is
not intended for use on critical
care patients.The Zio QX ECG Monitoring
System is intended to capture,
analyze and report symptomatic
and asymptomatic cardiac
events and continuous
electrocardiogram (ECG)
information for long-term
monitoring. While continuously
recording patient ECG, both
patient-triggered and
automatically detected
arrhythmia events are
transmitted to a monitoring
center for reporting. After wear,
a final report is generated based
on beat-to-beat information
from the entire ECG recording.

It is indicated for use on
patients 18 years or older who
may be asymptomatic or who
may suffer from transient
symptoms such as palpitations,
shortness of breath, dizziness,
light-headedness, pre-syncope,
syncope, fatigue, or anxiety. The |
| | | reports are provided for review
by the intended user to render
a diagnosis based on clinical
judgment and experience. It is
not intended for use on critical
care patients. |
| Patient Environment | In clinic; At home | Same |
| Patient Population | 18 years and older, non-critical
care, ambulatory patients | Same |
| Technological Characteristics | | |
| Key System Components | 1. Zio AT Patch
2. Zio AT Gateway | 1. Zio QX Patch
2. Zio QX Gateway
3. Zio ECG Analysis Service
(ZEUS) System |
| Event Trigger | • Patient-triggered (Button
press by the patient for
symptomatic events)
• Auto-trigger (Asymptomatic) | Same |
| System Communication
/Transmission | 1. Short range RF (between
patch and gateway)
2. Cellular RF, LTE (between
gateway and ZEUS System)
3. Manual/computer interface
(between patch and ZEUS
System) | 1. Short range RF (between
patch and gateway)
2. Cellular RF, 2G (between
Gateway and ZEUS System
3. Manual/computer interface
(between patch and ZEUS
System) |

Table 1: Substantial Equivalence Summary Table

7

VII. Performance Data

There are no required FDA performance standards for the Zio AT device. All necessary performance testing was conducted on the Zio AT device to ensure performance as intended per specifications and to support a determination of substantial equivalence to the predicate device.

Nonclinical testing included:

  • " System performance testing
  • . Biocompatibility testing
  • י Firmware verification testing
  • " Electrical safety and EMC testing

8

The scope of the nonclinical testing summarized in Table 2 demonstrates that the Zio AT device is in conformance with FDA recognized consensus standards and FDA guidance documents.

FDA#BodyNumber / VersionTitle
19-4IEC60601-1:2005/A1:2012General requirements for basic safety and
essential performance for Medical electrical
equipment
19-8IEC60601-1-2:2014General requirements for safety – Collateral
standard: Electromagnetic compatibility—
Requirements and tests
19-36IEC60601-1-2:2014+A1:2020General requirements for basic safety and
essential performance Collateral standard:
Electromagnetic compatibility Requirements and
tests
5-132IEC60601-1-6:2010/
A1:2013+A2:2020General requirements for safety - Collateral
standard: Usability
5-76IEC60601-1-8:2006/A1:2012General requirements for safety – Collateral
standard: General requirements, tests and
guidance for alarm systems in medical electrical
equipment
2-258ISO10993-1:2018Biological evaluation of medical devices –
Evaluation and testing
2-245ISO10993-5:2009Biological evaluation of medical devices-Part
5:Tests for in vitro cytotoxicity
5-134ISO15223-1:2021 (Fourth
Edition)Symbols to be used with medical device labels,
labeling and information to be supplied-Part 1
General Requirements
5-125ISO14971:2019Medical devices – Application of risk
management to medical devices
5-135ISO20417:2021Medical devices – Information to be supplied by
the Manufacturer
5-129IEC62366-1:2015/A1:2020Medical device - Application of usability
engineering to medical devices
13-79IEC62304:2006 Ed. 1.1 2015Medical device software – Software lifecycle
processes
3-155IEC60601-2-47:2012Medical electrical equipment -- Part 2-47:
Particular requirements for the basic safety and
essential performance of ambulatory
electrocardiographic systems
N/AFDAClass II Special Controls
Guidance Document for
Industry and FDA StaffArrhythmia Detector and Alarm (issued October
28, 2003)
N/AFDAGuidance for Industry and
FDA StaffThe 510(k) Program: Evaluating Substantial
Equivalence in Premarket Notifications [510(k)]
FDA#BodyNumber / VersionTitle
N/AFDAGuidance for Industry and
FDA StaffCybersecurity in Medical Devices: Quality System
Considerations and Content of Premarket
Submissions (issued September 27, 2023)
N/AFDAGuidance for Industry and
FDA StaffContent of Premarket Submissions for Device
Software Functions (issued June 14, 2023)

Table 2. FDA-Recognized Consensus Standards & Guidance Document Summary

9

VIII. Clinical Testing in Support of Substantial Equivalence Determination

No clinical testing was performed in support of this premarket notification.

IX. Conclusion

The results of the nonclinical testing performed demonstrate that the Zio AT device meets the requirements of established conformance standards and performance specifications necessary for its intended use, and does not raise new questions of safety or effectiveness as compared to the predicate device. The Zio AT device is substantially equivalent to the predicate device.