Devices › Ventricular (assist) bypass
Device brand name · Ventricular assist bypass
HeartMate Mobile Power Unit, EU: medical device reports filed with FDA
650 reports name it, 2018–2026. Manufacturer given most often on reports: Thoratec. Product code DSQ.
- 650
- device reports naming the brand
- 0% of all MAUDE reports · about 80 a year
- 67
- reports, 12 months to August 2026
- 62 in the 12 months before
- 98.5%
- classified as malfunction
- 37% across the product code
- 0.2%
- classified as death, as reported
- 1 reports · not verified by FDA
FDA's MAUDE database holds 650 reports that name the brand "HeartMate Mobile Power Unit, EU" (ventricular assist bypass), received between May 2018 and August 2026; the manufacturer given most often on reports is Thoratec. Spellings of one product vary from report to report.
67 reports arrived in the 12 months to August 2026, close to the 62 of 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 (98.5%), injury (1.4%) and death (0.2%); across all ventricular (assist) bypass reports (product code DSQ) death is recorded in 14.6% and malfunction in 37%. Event type is the reporter's classification of the report, not a verified outcome.
The device problems coded most often are mechanical problem (64.6%), complete loss of power (8.2%) and insufficient device problem information (5.4%). The patient problems coded most often are no patient involvement and electric shock. 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
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
Event type and report source
Event type, as classified on the report
Who filed the report
Grey bar: all 158,083 reports carrying product code DSQ. Event type is the filer's classification and is not verified by FDA.
Device problems coded
| Device problem (FDA code) | Reports | Share | Share across product code |
|---|---|---|---|
| Mechanical problema mechanical problem | 420 | 64.6% | 5.5% |
| Complete loss of power | 53 | 8.2% | 1.7% |
| Insufficient device problem information | 35 | 5.4% | 1.8% |
| Device difficult to setup or prepare | 33 | 5.1% | 0.6% |
| Electrical power problem | 21 | 3.2% | 2.1% |
| Material discolored | 19 | 2.9% | 0.1% |
| Failure to power up | 17 | 2.6% | 0.2% |
| Material deformation | 13 | 2% | 0.9% |
| Disconnection | 11 | 1.7% | 2% |
| Electrical /electronic property probleman electrical or electronic problem | 10 | 1.5% | 1.9% |
| Power problem | 10 | 1.5% | 4.5% |
| Contamination /decontamination problem | 9 | 1.4% | 0.1% |
| Leak/splashthe device leaked | 9 | 1.4% | 0.2% |
| Loss of powerthe device lost power | 8 | 1.2% | 0.4% |
| Display or visual feedback problem | 7 | 1.1% | 0.7% |
| Loose or intermittent connection | 7 | 1.1% | 0.9% |
| Connection problema connection problem | 6 | 0.9% | 2.5% |
| Crackthe device cracked | 5 | 0.8% | 0.1% |
| Failure to charge | 4 | 0.6% | 0.4% |
| Alarm not visible | 3 | 0.5% | 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) | Reports | Share |
|---|---|---|
| No patient involvement | 25 | 3.8% |
| Electric shockan electric shock | 1 | 0.2% |
Patient problem codes are present mainly in reports filed since 2019 and are often blank.
In context
| Measure | HeartMate Mobile Power Unit, EU | Product code DSQ | All MAUDE reports |
|---|---|---|---|
| Reports | 650 | 158,083 | 26,136,888 |
| Share of that pool | — | 0.4% | 0% |
| Classified as death, per 1,000 reports | 2 | 146 | 9 |
| Classified as injury | 1.4% | 48.3% | 36.2% |
| Classified as malfunction | 98.5% | 37% | 62.3% |
| Filed by the manufacturer | 100% | 97% | 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 DSQ
| Brand | Reports | Latest 12 months | Classified as death |
|---|---|---|---|
| HeartWare Ventricular Assist System - Pump | 36,450 | 1,304 | 13.4% |
| Heartware Ventricular Assist System | 14,550 | 0 | 6.9% |
| HeartMate 3 LVAS Implant Kit | 13,500 | 626 | 38% |
| Thoratec HeartMate 3 LVAS Implant Kit | 8,130 | 3,008 | 29.7% |
| HeartMate 3 Left Ventricular Assist System | 5,858 | 122 | 18.6% |
| HeartWare Ventricular Assist System - Controller 2.0 | 5,831 | 132 | 0.5% |
| HeartWare Ventricular Assist System - Battery | 5,010 | 47 | 0% |
| Thoratec HeartMate 3 System Controller | 3,591 | 1,387 | 0% |
| HeartMate 3 System Controller | 3,473 | 247 | 0.3% |
| HeartWare Ventricular Assist System - Driveline | 3,003 | 159 | 1.5% |
| HeartWare Ventricular Assist System - Pump/Driveline | 2,160 | 147 | 16.6% |
| Heartmate Mobile Power Unit Na | 2,096 | 4 | 0.1% |
| Heartware Ventricular Assist System-Pump | 1,424 | 0 | 19.9% |
| Heartware Ventricular Assist System- Pump | 1,306 | 0 | 35.4% |
| Heartmate Mobile Power Unit N/A | 1,234 | 519 | 0% |
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 HeartMate Mobile Power Unit, EU reports
How many FDA reports name HeartMate Mobile Power Unit, EU?
650 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 67 in the latest 12 months.
What kinds of events are reported?
malfunction (98.5%), injury (1.4%) and death (0.2%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.
What device problems are coded?
mechanical problem (64.6%), complete loss of power (8.2%), insufficient device problem information (5.4%), device difficult to setup or prepare (5.1%) and electrical power problem (3.2%). 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 HeartMate Mobile Power Unit, EU 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.