Reported Reactions

Devices › Automated insulin dosing device system, single hormonal control

Device brand name · Automated insulin dosing device system single hormonal control

Sensor Mmt-7040c3 Guardian4 5pk Ous 3: medical device reports filed with FDA

396 reports name it, 2023–2026. Manufacturer given most often on reports: Medtronic Minimed. Product code OZP.

396
device reports naming the brand
0% of all MAUDE reports · about 113 a year
227
reports, 12 months to August 2026
147 in the 12 months before
98.7%
classified as malfunction
85.6% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 396 reports that name the brand "Sensor Mmt-7040c3 Guardian4 5pk Ous 3" (automated insulin dosing device system single hormonal control), received between January 2023 and August 2026; the manufacturer given most often on reports is Medtronic Minimed. Spellings of one product vary from report to report.

227 reports arrived in the 12 months to August 2026, up 54% from 147 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 (98.7%) and injury (1.3%); 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 incorrect, inadequate or imprecise result or readings (86.6%), unexpected therapeutic results (10.4%) and break (6.3%). The patient problems coded most often are hyperglycemia, hypoglycemia and hemorrhage/blood loss/bleeding. 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

01836Sep 2021: 0Oct 2021: 0Nov 2021: 0Dec 2021: 02022Jan 2022: 0Feb 2022: 0Mar 2022: 0Apr 2022: 0May 2022: 0Jun 2022: 0Jul 2022: 0Aug 2022: 0Sep 2022: 0Oct 2022: 0Nov 2022: 0Dec 2022: 02023Jan 2023: 1Feb 2023: 0Mar 2023: 1Apr 2023: 1May 2023: 0Jun 2023: 1Jul 2023: 2Aug 2023: 2Sep 2023: 0Oct 2023: 1Nov 2023: 0Dec 2023: 22024Jan 2024: 0Feb 2024: 2Mar 2024: 0Apr 2024: 0May 2024: 2Jun 2024: 1Jul 2024: 4Aug 2024: 2Sep 2024: 0Oct 2024: 3Nov 2024: 6Dec 2024: 42025Jan 2025: 20Feb 2025: 10Mar 2025: 12Apr 2025: 11May 2025: 25Jun 2025: 11Jul 2025: 18Aug 2025: 27Sep 2025: 36Oct 2025: 17Nov 2025: 18Dec 2025: 222026Jan 2026: 23Feb 2026: 6Mar 2026: 19Apr 2026: 15May 2026: 6Jun 2026: 15Jul 2026: 32Aug 2026: 18

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

01142272023: 1120232024: 2420242025: 22720252026: 1342026

Event type and report source

Event type, as classified on the report

Death0%0
Injury1.3%5
Malfunction98.7%391
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%396
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
Incorrect, inadequate or imprecise result or readings34386.6%4.1%
Unexpected therapeutic results4110.4%1.8%
Breakthe device broke256.3%16.1%
Calibration problem256.3%1.4%
Difficult to removethe device was hard to remove174.3%0.1%
Delivered as unsterile product82%0%
Fracturea broken bone61.5%1.4%
Material integrity problema problem with the device material61.5%7.2%
Packaging problem61.5%0%
Manufacturing, packaging or shipping problem10.3%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
Hyperglycemiahigh blood sugar7218.2%
Hypoglycemialow blood sugar5012.6%
Hemorrhage/blood loss/bleeding184.5%
Shaking/tremors30.8%
Diaphoresis20.5%
Dizzinesslight-headedness or unsteadiness20.5%
Abdominal painstomach or belly pain10.3%
Blurred vision10.3%
Elevated ketones/ diabetic ketoacidosis10.3%
Fatiguetiredness10.3%
Vomitingbeing sick10.3%

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

In context

MeasureSensor Mmt-7040c3 Guardian4 5pk Ous 3Product code OZPAll MAUDE reports
Reports396893,21526,136,888
Share of that pool—0%0%
Classified as death, per 1,000 reports019
Classified as injury1.3%14.3%36.2%
Classified as malfunction98.7%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%
Pump Mmt-1781k 670g V4 11 Mg17,0816170%
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%

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 Sensor Mmt-7040c3 Guardian4 5pk Ous 3 reports

How many FDA reports name Sensor Mmt-7040c3 Guardian4 5pk Ous 3?

396 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 227 in the latest 12 months.

What kinds of events are reported?

malfunction (98.7%) and injury (1.3%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

incorrect, inadequate or imprecise result or readings (86.6%), unexpected therapeutic results (10.4%), break (6.3%), calibration problem (6.3%) and difficult to remove (4.3%). 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 Sensor Mmt-7040c3 Guardian4 5pk Ous 3 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.