Reported Reactions

Devices › Implantable cardioverter defibrillator (non-crt)

Device brand name · Implantable cardioverter defibrillator non-crt

Emblem Mri S-Icd: medical device reports filed with FDA

21,480 reports name it, 2017–2026. Manufacturer given most often on reports: Boston Scientific. Product code LWS.

21,480
device reports naming the brand
0.1% of all MAUDE reports · about 2,263 a year
3,088
reports, 12 months to August 2026
3,684 in the 12 months before
29.8%
classified as malfunction
37.4% across the product code
0.2%
classified as death, as reported
36 reports · not verified by FDA

FDA's MAUDE database holds 21,480 reports that name the brand "Emblem Mri S-Icd" (implantable cardioverter defibrillator non-crt), received between January 2017 and August 2026; the manufacturer given most often on reports is Boston Scientific. Spellings of one product vary from report to report.

3,088 reports arrived in the 12 months to August 2026, down 16% from 3,684 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 injury (70.1%), malfunction (29.8%) and death (0.2%); across all implantable cardioverter defibrillator (non-crt) reports (product code LWS) death is recorded in 2.7% and malfunction in 37.4%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are premature discharge of battery (41.1%), inappropriate/inadequate shock/stimulation (32.8%) and over-sensing (32.8%). The patient problems coded most often are shock from patient lead(s), electric shock and discomfort. 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

0309617Sep 2021: 72Oct 2021: 518Nov 2021: 40Dec 2021: 682022Jan 2022: 578Feb 2022: 76Mar 2022: 100Apr 2022: 617May 2022: 427Jun 2022: 293Jul 2022: 216Aug 2022: 268Sep 2022: 217Oct 2022: 297Nov 2022: 299Dec 2022: 2632023Jan 2023: 314Feb 2023: 293Mar 2023: 300Apr 2023: 306May 2023: 321Jun 2023: 389Jul 2023: 350Aug 2023: 381Sep 2023: 336Oct 2023: 371Nov 2023: 322Dec 2023: 3662024Jan 2024: 360Feb 2024: 334Mar 2024: 331Apr 2024: 328May 2024: 317Jun 2024: 302Jul 2024: 400Aug 2024: 290Sep 2024: 344Oct 2024: 339Nov 2024: 304Dec 2024: 3802025Jan 2025: 279Feb 2025: 296Mar 2025: 296Apr 2025: 278May 2025: 310Jun 2025: 279Jul 2025: 307Aug 2025: 272Sep 2025: 250Oct 2025: 287Nov 2025: 238Dec 2025: 2622026Jan 2026: 261Feb 2026: 290Mar 2026: 277Apr 2026: 281May 2026: 232Jun 2026: 238Jul 2026: 298Aug 2026: 174

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

02,0254,0492017: 320172018: 6920182019: 56820192020: 1,33420202021: 2,37220212022: 3,65120222023: 4,04920232024: 4,02920242025: 3,35420252026: 2,0512026

Event type and report source

Event type, as classified on the report

Death0.2%36
Injury70.1%15,047
Malfunction29.8%6,396
Other0%1
Not given0%0

Who filed the report

Manufacturer report99.9%21,469
Voluntary report0%9
User facility report0%0
Distributor report0%0
Not given0%2

Grey bar: all 380,959 reports carrying product code LWS. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Premature discharge of battery8,82041.1%8.1%
Inappropriate/inadequate shock/stimulation7,05032.8%12.8%
Over-sensing7,04732.8%21.1%
Incorrect, inadequate or imprecise result or readings5,66526.4%2.3%
Signal artifact/noise3,93618.3%8%
Failure to read input signal3,62616.9%2.1%
Battery problema problem with the battery2,32610.8%2%
Noise, audible1,0705%0.6%
High impedance1,0384.8%15.6%
Device sensing problem8253.8%3.9%
Data problem8233.8%0.4%
Under-sensing6753.1%3.1%
Failure to convert rhythm5572.6%0.9%
Defective devicethe device was defective5382.5%1.3%
Interrogation problem5092.4%0.3%
Migrationthe device moved from where it was placed3261.5%0.2%
Low impedance2961.4%2.8%
Inaccurate synchronization2131%0.2%
Impedance problem1770.8%4.4%
Telemetry discrepancy1570.7%0.2%

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
Shock from patient lead(s)3,69117.2%
Electric shockan electric shock3,03314.1%
Discomfortdiscomfort2171%
Painpain, site not specified1870.9%
Pocket erosion1820.8%
Sepsisa severe body-wide response to infection1670.8%
Ventricular fibrillationa chaotic rhythm from the lower heart chambers1400.7%
Hematomaa collection of blood under the skin or in tissue1090.5%
Syncope/fainting1050.5%
Erosion1010.5%
Arrhythmia820.4%
Twiddlers syndrome760.4%
Anxietyanxiety670.3%
Wound dehiscencea wound reopened630.3%
Swelling/ edema530.2%

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

In context

MeasureEmblem Mri S-IcdProduct code LWSAll MAUDE reports
Reports21,480380,95926,136,888
Share of that pool—5.6%0.1%
Classified as death, per 1,000 reports2279
Classified as injury70.1%59.6%36.2%
Classified as malfunction29.8%37.4%62.3%
Filed by the manufacturer99.9%97.8%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 LWS

BrandReportsLatest 12 monthsClassified as death
Sprint Quattro Secure S MRI SureScan36,8956,4361.4%
Sprint Quattro Secure24,23725.2%
Emblem S-Icd17,2502,2370.1%
Sprint Fidelis17,00534014.1%
Sprint Quattro Secure S14,39802.4%
Endotak Reliance25,8972381.2%
Sprint Quattro Secure MRI SureScan15,6061,9031.4%
Endotak Reliance G10,1151,0490.6%
Teligen16,537470.6%
Durata Sts Optim Active Fixation9,6813015.6%
Sprint Quattro5,59102.6%
Reliance 4-Front9,8522,0240.4%
Sprint6,1311612.4%
Vitality 24,77901%
S-Icd System5,10401.1%

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 Emblem Mri S-Icd reports

How many FDA reports name Emblem Mri S-Icd?

21,480 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 3,088 in the latest 12 months.

What kinds of events are reported?

injury (70.1%), malfunction (29.8%) and death (0.2%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

premature discharge of battery (41.1%), inappropriate/inadequate shock/stimulation (32.8%), over-sensing (32.8%), incorrect, inadequate or imprecise result or readings (26.4%) and signal artifact/noise (18.3%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (99.9%) and voluntary reports (0%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Emblem Mri S-Icd 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.