Reported Reactions

Devices › Automated external defibrillators (non-wearable)

Device brand name · Aed

Heartstart Frx Defibrillator: medical device reports filed with FDA

322 reports name it, 2021–2025. Manufacturer given most often on reports: Philips North America. Product code MKJ.

322
device reports naming the brand
0% of all MAUDE reports · about 60 a year
0
reports, 12 months to August 2026
5 in the 12 months before
99.1%
classified as malfunction
96.8% across the product code
0.6%
classified as death, as reported
2 reports · not verified by FDA

322 medical device reports received by FDA name the brand "Heartstart Frx Defibrillator" (aed); the manufacturer given most often on reports is Philips North America; received from February 2021 to August 2025. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

0 reports arrived in the 12 months to August 2026, against 5 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 (99.1%), death (0.6%) and injury (0.3%); across all automated external defibrillators (non-wearable) reports (product code MKJ) death is recorded in 1.7% and malfunction in 96.8%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are failure of device to self-test (88.5%), failure to power up (6.5%) and material disintegration (1.6%). The patient problems coded most often are cardiac arrest and no patient involvement. 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

01121Sep 2021: 18Oct 2021: 16Nov 2021: 21Dec 2021: 172022Jan 2022: 7Feb 2022: 13Mar 2022: 10Apr 2022: 9May 2022: 9Jun 2022: 6Jul 2022: 4Aug 2022: 11Sep 2022: 2Oct 2022: 6Nov 2022: 5Dec 2022: 82023Jan 2023: 8Feb 2023: 11Mar 2023: 7Apr 2023: 4May 2023: 4Jun 2023: 4Jul 2023: 4Aug 2023: 2Sep 2023: 4Oct 2023: 3Nov 2023: 5Dec 2023: 32024Jan 2024: 2Feb 2024: 2Mar 2024: 0Apr 2024: 0May 2024: 7Jun 2024: 2Jul 2024: 2Aug 2024: 0Sep 2024: 0Oct 2024: 0Nov 2024: 0Dec 2024: 02025Jan 2025: 0Feb 2025: 0Mar 2025: 0Apr 2025: 0May 2025: 0Jun 2025: 0Jul 2025: 4Aug 2025: 1Sep 2025: 0Oct 2025: 0Nov 2025: 0Dec 2025: 02026Jan 2026: 0Feb 2026: 0Mar 2026: 0Apr 2026: 0May 2026: 0Jun 2026: 0Jul 2026: 0Aug 2026: 0

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

0771532021: 15320212022: 9020222023: 5920232024: 1520242025: 52025

Event type and report source

Event type, as classified on the report

Death0.6%2
Injury0.3%1
Malfunction99.1%319
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%322
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 269,686 reports carrying product code MKJ. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Failure of device to self-test28588.5%8.9%
Failure to power up216.5%13%
Material disintegration51.6%0%
Insufficient device problem information30.9%0.5%
Failure to deliver shock/stimulation20.6%1.8%
Degraded10.3%0.1%
Failure to analyze signal10.3%0.5%
Inappropriate/inadequate shock/stimulation10.3%0.5%
Inaudible or unclear audible prompt/feedback10.3%0.3%
Premature discharge of battery10.3%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
Cardiac arrestthe heart stopped41.2%
No patient involvement20.6%

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

In context

MeasureHeartstart Frx DefibrillatorProduct code MKJAll MAUDE reports
Reports322269,68626,136,888
Share of that pool—0.1%0%
Classified as death, per 1,000 reports6179
Classified as injury0.3%0.7%36.2%
Classified as malfunction99.1%96.8%62.3%
Filed by the manufacturer100%99.3%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 MKJ

BrandReportsLatest 12 monthsClassified as death
M Series27,11242.3%
Heartstart Mrx18,59200.7%
HeartStart MRx -EMS Defibrillator16,166330.8%
Heart Start XL15,944950.9%
R Series Defibrillator15,39300.9%
X Series13,9831,6922.7%
HeartStart XL+ Defibrillator/Monitor13,1882100.4%
Heartstart Onsite10,96400.8%
Aed Plus9,2254232.2%
Heartsine Samaritan 300p And Pad Pak8,19700.3%
E Series Defibrillator8,05201.5%
Lifepak R 15 Monitor/Defibrillator6,1174631.4%
Heartstart Frx5,97821.3%
Efficia Dfm1005,07600.6%
LIFEPAK 15 defibrillator/monitor4,7163691%

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 Heartstart Frx Defibrillator reports

How many FDA reports name Heartstart Frx Defibrillator?

322 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 0 in the latest 12 months.

What kinds of events are reported?

malfunction (99.1%), death (0.6%) and injury (0.3%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

failure of device to self-test (88.5%), failure to power up (6.5%), material disintegration (1.6%), insufficient device problem information (0.9%) and failure to deliver shock/stimulation (0.6%). 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 Heartstart Frx Defibrillator 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.