FDA record research

Outpatient Cardiac Telemetry (QYX) — FDA decisions, comparisons and evidence

The 2021–2025 analysis contains 4 selected substantially-equivalent FDA decisions under primary product code QYX. Use it to compare documented submissions and evidence with your product. A separate 2026 update contains 1 decisions through 2026-09-27. The latest selected decision across the acquired endpoint is dated 2026-04-21. Neither set establishes a suitable predicate or the route for your device. The complete-year window has 4 decisions; the separate all-observed-date count is 21. These denominators describe different date ranges.

Evidence retrieved 2026-10-07. Source versions and topic-specific limits are listed below.

Recorded scope and its declared regulatory reference

An exact FDA-record regulation_number match to one acquired Title 21 section. Records with the same normalized scope definition, class, regulation and recorded submission/GMP flags are grouped. Sparse definitions and generic exemption boilerplate do not qualify. No text-similarity equivalence or legal applicability is inferred.

What scope does the FDA record describe?

Devices are intended to continuously record and analyze electrocardiograms for automatic detection and recording of cardiac electrical activity in an outpatient setting. Detected, notifiable events are transmitted to the prescribing clinician during the monitoring period by a 24/7 attended analysis center after review by a qualified individual. Devices may allow remote access and display of electrocardiograms acquired. Not for use for detection or notification of hemodynamically unstable or life-threatening arrhythmias or cardiac events requiring urgent medical response. Not intended for patients at elevated risk of serious cardiovascular events that would require prompt intervention. It is not intended for monitoring patients during cardiac rehabilitation outside of healthcare facilities. Devices are intended for prescription use only.

Compare the proposed indication, user, anatomy, technology and operating principle with this actual scope; record differences and unresolved facts.

Cited source

Which current section does the record cite?

§ 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. [68 FR 61344, Oct. 28, 2003]

Read the identification, classification, conditions and referenced limitations in the cited section. A numeric reference match is not a buyer classification or exemption determination.

Cited source

Historical FDA comparison

2021–2025: five complete calendar years

Primary code QYX

All statistics in this section use decisions dated 2021-01-01 to 2025-12-31. The partial 2026 update below is excluded from these distributions.

4Selected decisions in these five years
WithheldMedian receipt-to-decision calendar days
4Valid date pairs in the distribution

There are 4 valid recent date pairs. Distribution summaries require at least 20; older records are not substituted for a current benchmark.

20210
20220
20230
20243
20251

Statistical source: FDA openFDA 510(k) decision dataset. Partition 1 Download the identified records and dates (CSV).

Filters, exclusions and reproducible calculation

Deduplicate by official submission ID across the complete current manifest partitions. Select exact primary product code, K-number format and the stated SE decision codes with valid dates. Recent distributions use the five complete calendar years preceding the latest valid endpoint decision year. Partial-year counts compare equal January-to-cutoff periods. Quartiles use linear interpolation at (n-1)*p and are withheld below 20 valid date pairs. The analysis n describes only its declared complete-year window; selected_se_n separately counts all selected recorded dates through the cutoff.

21 selected records across all observed dates; 0 other/invalid identifier or decision-date records excluded. 0 missing or invalid date pairs in the five-year window.

Date fields: date_received → decision_date. Quantiles: Hyndman–Fan type 7: linear interpolation at (n − 1) × p; displayed to one decimal; n ≥ 20 valid pairs.

Receipt-to-decision calendar elapsed time includes time outside active FDA review; it is not FDA review time, a promised project timeline or an estimate of future clearance. This selected recorded cohort does not include all applications or establish a success probability, predicate suitability, market size, current market availability or legal authorization for another product.

Calculation fda-buyer-research-3 · database cutoff 2026-09-27. CSV rows identify each official K-number, cohort, date pair, exclusion reason and source version.

Separate partial-year update

2026 decisions through 2026-09-27

1 selected decisions from 2026-01-01 to 2026-09-27. The equivalent previous-year period contains 1 decisions through 2025-09-27. These counts describe the records; they are not market growth or submission success rates.

Named records to investigate

Latest decisions across the database

These dated records may come from 2026 or earlier years. They are a separate investigation list, not the five-year statistical cohort. Compare the actual indications and technology before considering a record as a comparator.

Official record / deviceRecorded applicantDecisionRecorded typeCalendar days
K250793 ↗RhythmStar System (SL)RhythMedix, LLC2026-04-21Traditional403
K241179 ↗Rhythm Express Remote Cardiac Monitoring System (RX-1 mini)VivaQuant, Inc.2025-07-11Traditional438
K240653 ↗SmartCardia 7L Platform (MCT)Smartcardia SA2024-10-31Traditional238
K240029 ↗Zio AT® device (A100A1001)iRhythm Technologies, Inc.2024-10-21Traditional291
K233584 ↗RhythmStar SystemRhythMedix, LLC2024-07-08Traditional244
K162956 ↗NOWCARDIO SYSTEMContex International Technologies (Canada), Inc.2017-09-22Abbreviated333
K170565 ↗LifeWatch Mobile Cardiac Telemetry 3 Lead LifeWatch MCT 3LLifewatch Services, Inc.2017-08-01Traditional155
K163512 ↗Zio AT ECG Monitoring SystemiRhythm Technologies, Inc.2017-06-02Traditional169

Supporting documents actually acquired

Go beyond the database row

Read the source context, then compare the evidence with your design. Topic locations below are text matches, including possible limitations or negative statements; they are not a mandatory test list.

The documents are a bounded sample of acquired summaries, not complete evidence coverage of the cohort.

Recorded classification context

Known context: US. Match the intended use and design with the recorded category before treating it as applicable.

Source factRecorded value
FDA product codeQYX [1]
Generic device categoryOutpatient Cardiac Telemetry [1]
Recorded scopeDevices are intended to continuously record and analyze electrocardiograms for automatic detection and recording of cardiac electrical activity in an outpatient setting. Detected, notifiable events are transmitted to the prescribing clinician during the monitoring period by a 24/7 attended analysis center after review by a qualified individual. Devices may allow remote access and display of electrocardiograms acquired. Not for use for detection or notification of hemodynamically unstable or life-threatening arrhythmias or cardiac events requiring urgent medical response. Not intended for patients at elevated risk of serious cardiovascular events that would require prompt intervention. It is not intended for monitoring patients during cardiac rehabilitation outside of healthcare facilities. Devices are intended for prescription use only. [1]
Recorded class2 [1]
Regulation870.1025 [1]
Medical specialtyCardiovascular [1]

Build a comparison that explains the differences

Use this checklist to gather your business or product details before speaking with a specialist. The items below explain what to record and suggest useful supporting documents. You can add your own answers in the editable project brief.

  1. Which specific part of the recorded scope fits or differs?

    Put your proposed label and design beside the quoted definition. Record matching facts, differences and missing facts separately; naming the category alone cannot resolve scope.

    Useful evidence: Proposed indication/design and a definition-to-product comparison with source locators.

  2. Have the cited section and its limitations been reviewed?

    Record the applicable paragraph, conditions and cross-referenced limitations after specialist review. Keep a claimed exemption separate from actual establishment, listing and quality-system responsibilities.

    Useful evidence: Dated classification/route rationale and the current provisions relied on, with unresolved conditions.

  3. Compare your intended use with a named decision

    Choose a named record above. Put your proposed claim beside its actual indications-for-use statement. Record different patients, users, anatomy, settings and output claims; do not treat a shared code as proof of equivalence.

    Useful evidence: Your draft indications for use + the selected official summary and its exact page.

  4. Explain the technology and evidence differences

    For each comparison, record the different materials, hardware, software functions and operating conditions. Link each difference to existing evidence or an unresolved evaluation task.

    Useful evidence: A three-column matrix: comparator fact / your design fact / evidence or unresolved gap.

  5. Prepare a scope-based schedule without a sparse timing benchmark

    This recent cohort has fewer than 20 valid date pairs, so it supplies no median or percentile benchmark. Ask for a schedule based on actual preparation, evidence gaps, interactions and response assumptions; keep any historical decision context separately dated.

    Useful evidence: Document/test readiness, unresolved route/evidence tasks and the assumptions behind the specialist’s proposed sequence.

Work packages and dependencies

What needs to happen first

Questions for providers

Sources and data dates

Read the official document in context. The audit details identify the precise locators and preserved versions used for this page.

FDA openFDA — device classification records ↗

2026-10-05 · retrieved 2026-10-06

Audit details: precise locators and snapshot identifiers

Source key D01 · snapshot 936de5f5d47b9293b702fc32512a79173969fb788c74a63d9b91abe73f3b86a5

  • [1] device-classification-0001-of-0001.json:results[506] · record 6a536a2c755b5ed2a04ddaa3a7f8dd7f8ec393ee5ed00efc687b6d71c58ac055

FDA 510(k) summary — K250793 ↗

Mon, 04 May 2026 20:38:41 GMT · retrieved 2026-10-06

Audit details: precise locators and snapshot identifiers

Source key D02 · snapshot d24e26abd8ec0d90ccbe63e51893d982453a3bbdad6255dea3199f3b13d7f06a

  • [2] PDF page 10 · record 64dabc1a8354002f71134684108ab6558cf36188ea98ae36152801c71156c973

FDA 510(k) summary — K241179 ↗

Mon, 04 Aug 2025 15:47:16 GMT · retrieved 2026-10-07

Audit details: precise locators and snapshot identifiers

Source key D02 · snapshot 6dfe054839dcba26d3000c766ff038df135ed6abae482e09adfc54bfa302d8b2

  • [4] PDF page 7 · record 0e0918e3a3110d7924dcda12f2b6f5b4ef354999ea020e957a0dd0c34f0229a9
  • [5] PDF page 9 · record b6dd475238aa91d93ae695e17b409fb944ee6182519f95ac7fe33d9999e12551

FDA 510(k) summary — K240653 ↗

Fri, 01 Nov 2024 14:57:02 GMT · retrieved 2026-10-07

Audit details: precise locators and snapshot identifiers

Source key D02 · snapshot 1633c969d31e3f38834b049c0c39c46156a5852e2ccb6539a8b3be04d1e098fa

  • [6] PDF page 9 · record 9e633a2f8765f37b29baef2c90f1cfe16170b0744b757f9bf54536b99351fe1a

Prepare an editable project brief

Confirm the facts, scope and contact preference before sharing your project. Preparing this page sends no provider outreach.

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