# K241179: Rhythm Express Remote Cardiac Monitoring System (RX-1 mini)

- Pathway: 510(k) (Traditional)
- Applicant: VivaQuant, Inc.
- Decided: Jul 11, 2025 after 438 days
- Product code: QYX (Outpatient Cardiac Telemetry)
- Device class: 2
- Regulation: 21 CFR 870.1025
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 9 generations back to K882803 (1988). 31 ancestors in all.
No later device cites it as a predicate yet.
0 of 32 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K200833: RX-1 Rhythm Express Remote Cardiac Monitoring System, VivaQuant, Inc. (2020) Summary page 5.

## Indications for use
The Rhythm Express remote cardiac monitoring system is intended for use by patients greater than 10 kg who either have or are at risk of having cardiac disease and those that demonstrate intermittent symptoms indicative of cardiac disease and require cardiac monitoring on a continuing basis. The device continuously records ECG data and upon detection by an ECG analysis algorithm or manually initiated by the patient, automatically delivers the recorded cardiac activity to the server where it is presented for review by a medical professional. The data received from the Rhythm Express device can be used by another compatible device for arrhythmia analysis, reporting and signal measurements. The Rhythm Express device is not intended to be used as part of an alarm system or for active patient monitoring. The device does not deliver any therapy, administer any drugs, provide interpretive or diagnostic statements or provide for any life support. The Rhythm Express system communicates events from the patient to the monitoring center within one to seven minutes (assuming cell service is available) and hence is not suitable for use as a real-time arrhythmia event monitor. This device is not intended for patients in whom quantification of triplets/couplets is needed.

Source page: https://510kreport.com/device/K241179
Methodology: https://510kreport.com/methodology