Reported Reactions

Devices › Transmitters and receivers, physiological signal, radiofrequency

Device brand name · Pacemaker data transmitter

Merlin@home, RF telemetry basic: medical device reports filed with FDA

967 reports name it, 2015–2026. Manufacturer given most often on reports: St Jude Medical Crm-Sylmar. Product code DRG.

967
device reports naming the brand
0% of all MAUDE reports · about 87 a year
45
reports, 12 months to August 2026
57 in the 12 months before
98.4%
classified as malfunction
91.5% across the product code
0.1%
classified as death, as reported
1 reports · not verified by FDA

967 medical device reports received by FDA name the brand "Merlin@home, RF telemetry basic" (pacemaker data transmitter); the manufacturer given most often on reports is St Jude Medical Crm-Sylmar; received from June 2015 to August 2026. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

45 reports arrived in the 12 months to August 2026, down 21% from 57 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (98.4%), injury (1.4%) and death (0.1%); across all transmitters and receivers, physiological signal, radiofrequency reports (product code DRG) death is recorded in 4.2% and malfunction in 91.5%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are thermal decomposition of device (46.9%), failure to power up (25.6%) and charred (7.7%). The patient problems coded most often are no patient involvement, electric shock and cardiac arrest. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Reports by month, five years

0611Sep 2021: 3Oct 2021: 2Nov 2021: 1Dec 2021: 12022Jan 2022: 2Feb 2022: 1Mar 2022: 1Apr 2022: 3May 2022: 1Jun 2022: 6Jul 2022: 2Aug 2022: 1Sep 2022: 2Oct 2022: 3Nov 2022: 0Dec 2022: 12023Jan 2023: 3Feb 2023: 1Mar 2023: 0Apr 2023: 2May 2023: 6Jun 2023: 2Jul 2023: 1Aug 2023: 1Sep 2023: 4Oct 2023: 3Nov 2023: 4Dec 2023: 02024Jan 2024: 4Feb 2024: 5Mar 2024: 3Apr 2024: 6May 2024: 6Jun 2024: 0Jul 2024: 4Aug 2024: 7Sep 2024: 0Oct 2024: 4Nov 2024: 4Dec 2024: 42025Jan 2025: 5Feb 2025: 8Mar 2025: 1Apr 2025: 3May 2025: 6Jun 2025: 7Jul 2025: 5Aug 2025: 10Sep 2025: 3Oct 2025: 11Nov 2025: 8Dec 2025: 42026Jan 2026: 5Feb 2026: 1Mar 2026: 2Apr 2026: 1May 2026: 5Jun 2026: 1Jul 2026: 2Aug 2026: 2

Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

By year received

02064122015: 5320152016: 852017: 41220172018: 1232019: 4420192020: 402021: 2320212022: 232023: 2720232024: 472025: 7120252026: 19

Event type and report source

Event type, as classified on the report

Death0.1%1
Injury1.4%14
Malfunction98.4%952
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%967
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 1,726 reports carrying product code DRG. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Thermal decomposition of device45446.9%19.5%
Failure to power up24825.6%10.2%
Charred747.7%4.8%
Power conditioning problem687%4.9%
Melted394%1.4%
Breakthe device broke373.8%1%
Device operates differently than expectedthe device behaved unexpectedly333.4%7.8%
Smoking313.2%0.8%
Sparking293%0.6%
Overheating of device131.3%3.4%
No tactile prompts/feedback80.8%0%
Noise, audible80.8%0.6%
Defective devicethe device was defective70.7%0.1%
Device emits odor60.6%0.6%
Display or visual feedback problem50.5%0.8%
Power problem50.5%0.9%
Unintended electrical shock40.4%0%
Electrical /electronic property probleman electrical or electronic problem30.3%0.3%
Insufficient device problem information30.3%0.1%
Excessive heating20.2%0.1%

FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.

Patient problems coded

Patient problem (FDA code)ReportsShare
No patient involvement262.7%
Electric shockan electric shock20.2%
Cardiac arrestthe heart stopped10.1%
Complaint, ill-defined10.1%
Deaththe patient died; cause not stated by this term10.1%
Discomfortdiscomfort10.1%
Shockshock, a collapse of the circulation10.1%
Shock from patient lead(s)10.1%
Therapeutic effects, unexpected10.1%

Patient problem codes are present mainly in reports filed since 2019 and are often blank.

In context

MeasureMerlin@home, RF telemetry basicProduct code DRGAll MAUDE reports
Reports9671,72626,136,888
Share of that pool—56%0%
Classified as death, per 1,000 reports1429
Classified as injury1.4%3%36.2%
Classified as malfunction98.4%91.5%62.3%
Filed by the manufacturer100%86.8%94.9%

Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Other brands with product code DRG

BrandReportsLatest 12 monthsClassified as death
Org-9110a309590%
Zm-531pa180381.1%
Philips19006.3%
Datascope35607.3%
Delta291227.2%
PressureWire169801.8%
Versacare3,30300.1%

Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."

Questions about Merlin@home, RF telemetry basic reports

How many FDA reports name Merlin@home, RF telemetry basic?

967 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 45 in the latest 12 months.

What kinds of events are reported?

malfunction (98.4%), injury (1.4%) and death (0.1%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

thermal decomposition of device (46.9%), failure to power up (25.6%), charred (7.7%), power conditioning problem (7%) and melted (4%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (100%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Merlin@home, RF telemetry basic was at fault?

No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."

How do I report a problem with a medical device?

Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.