Reported Reactions

Devices › Automated insulin dosing device system, single hormonal control

Device brand name · Artificial pancreas device system single hormonal control

Pump Mmt-1781k 670g V4 11 Mg: medical device reports filed with FDA

17,081 reports name it, 2019–2026. Manufacturer given most often on reports: Medtronic Puerto Rico Operations. Product code OZP.

17,081
device reports naming the brand
0.1% of all MAUDE reports · about 2,306 a year
617
reports, 12 months to August 2026
1,478 in the 12 months before
89.8%
classified as malfunction
85.6% across the product code
0%
classified as death, as reported
2 reports · not verified by FDA

FDA's MAUDE database holds 17,081 reports that name the brand "Pump Mmt-1781k 670g V4 11 Mg" (artificial pancreas device system single hormonal control), received between February 2019 and August 2026; the manufacturer given most often on reports is Medtronic Puerto Rico Operations. Spellings of one product vary from report to report.

617 reports arrived in the 12 months to August 2026, down 58% from 1,478 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 (89.8%) and injury (10.2%); across all automated insulin dosing device system, single hormonal control reports (product code OZP) death is recorded in 0.1% and malfunction in 85.6%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are power problem (27.4%), break (17.8%) and material integrity problem (12.5%). The patient problems coded most often are hyperglycemia, hypoglycemia and elevated ketones/ diabetic ketoacidosis. 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

07011,401Sep 2021: 331Oct 2021: 173Nov 2021: 246Dec 2021: 2852022Jan 2022: 173Feb 2022: 296Mar 2022: 1,401Apr 2022: 209May 2022: 313Jun 2022: 434Jul 2022: 778Aug 2022: 357Sep 2022: 614Oct 2022: 193Nov 2022: 327Dec 2022: 4262023Jan 2023: 411Feb 2023: 181Mar 2023: 238Apr 2023: 241May 2023: 148Jun 2023: 229Jul 2023: 233Aug 2023: 238Sep 2023: 144Oct 2023: 184Nov 2023: 224Dec 2023: 1502024Jan 2024: 205Feb 2024: 163Mar 2024: 146Apr 2024: 217May 2024: 276Jun 2024: 97Jul 2024: 219Aug 2024: 114Sep 2024: 194Oct 2024: 160Nov 2024: 133Dec 2024: 1662025Jan 2025: 153Feb 2025: 102Mar 2025: 107Apr 2025: 126May 2025: 94Jun 2025: 75Jul 2025: 96Aug 2025: 72Sep 2025: 116Oct 2025: 75Nov 2025: 40Dec 2025: 712026Jan 2026: 69Feb 2026: 55Mar 2026: 45Apr 2026: 29May 2026: 42Jun 2026: 23Jul 2026: 31Aug 2026: 21

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

02,7615,5212019: 38720192020: 1,91520202021: 3,10520212022: 5,52120222023: 2,62120232024: 2,09020242025: 1,12720252026: 3152026

Event type and report source

Event type, as classified on the report

Death0%2
Injury10.2%1,742
Malfunction89.8%15,337
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%17,081
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 893,215 reports carrying product code OZP. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Power problem4,68527.4%15.8%
Breakthe device broke3,03517.8%16.1%
Material integrity problema problem with the device material2,13912.5%7.2%
Obstruction of flow1,2747.5%11.7%
No display/image1,0075.9%7.1%
Patient device interaction problem8715.1%7%
Moisture or humidity problem8465%3.9%
Device difficult to program or calibrate7744.5%2.7%
Mechanical problema mechanical problem7284.3%5.3%
Computer software problema software problem6974.1%2%
Battery problema problem with the battery5113%5.2%
Circuit failure4202.5%2.2%
Communication or transmission problemthe device could not communicate or transmit3852.3%2.3%
Insufficient flow or under infusion2911.7%2.5%
Connection problema connection problem2271.3%2.3%
Key or button unresponsive/not working2261.3%3.3%
Visual prompts will not clear2251.3%0.6%
Display or visual feedback problem2031.2%2.2%
Insufficient device problem information1841.1%1.4%
Electrical /electronic property probleman electrical or electronic problem1540.9%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
Hyperglycemiahigh blood sugar1,5178.9%
Hypoglycemialow blood sugar5423.2%
Elevated ketones/ diabetic ketoacidosis880.5%
Nauseafeeling sick860.5%
Vomitingbeing sick860.5%
Headachehead pain380.2%
Abdominal painstomach or belly pain260.2%
Dizzinesslight-headedness or unsteadiness240.1%
Fatiguetiredness230.1%
Malaisegeneral feeling of being unwell230.1%
Shaking/tremors230.1%
Discomfortdiscomfort220.1%
Confusion/ disorientation210.1%
Loss of consciousnesspassing out190.1%
Diaphoresis140.1%

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

In context

MeasurePump Mmt-1781k 670g V4 11 MgProduct code OZPAll MAUDE reports
Reports17,081893,21526,136,888
Share of that pool—1.9%0.1%
Classified as death, per 1,000 reports019
Classified as injury10.2%14.3%36.2%
Classified as malfunction89.8%85.6%62.3%
Filed by the manufacturer100%99.9%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 OZP

BrandReportsLatest 12 monthsClassified as death
Pump MMT-1780KPK 670G Pathway Black MG224,5568350.2%
MiniMed 780G US System BLE Connect 3.0 mg/dL112,81757,1400.1%
MiniMed 770G US System BLE Connect 3.0 mg/dL84,6854,8380.2%
Pump 1886 780G OUS BLE Pump mg/dL84,25936,8830%
670G Insulin Pump MMT-1780KL78,2301,1210.2%
MiniMed 780G OUS System BLE Connect 3.0 mmol/L66,71819,1940%
PUMP MMT-1884L MM780G BLE 3.0 mg/ml34,8469,7030.1%
Pump Mmt-1880l Mm770g Ble Mg24,0453,1480.2%
Pump Mmt-1782k 670g V4 11 Mm23,5871370.1%
Xmtr Mmt-7811xww Gst3c Ous16,4141110%
MiniMed 780G OUS System BLE Connect 3.0 mg/dL14,4583400%
Xmtr MMT-7811NA GST3C Lockout17,012650%
Guardian Link 3 US11,3102290%
Pump Mmt-1780k 670g 3ml Black9,34590.2%
Unknown NGP9,0253,9820.8%

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 Pump Mmt-1781k 670g V4 11 Mg reports

How many FDA reports name Pump Mmt-1781k 670g V4 11 Mg?

17,081 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 617 in the latest 12 months.

What kinds of events are reported?

malfunction (89.8%) and injury (10.2%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

power problem (27.4%), break (17.8%), material integrity problem (12.5%), obstruction of flow (7.5%) and no display/image (5.9%). 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 Pump Mmt-1781k 670g V4 11 Mg 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.