Reported Reactions

Devices › Sensor, glucose, invasive, non-adjunctive

Device brand name · Sensor glucose invasive non-adjunctive

Sensor Mmt-5120c2 Instinct 780 5pk Ous 2: medical device reports filed with FDA

340 reports name it, 2024–2026. Manufacturer given most often on reports: Medtronic Minimed. Product code PQF.

340
device reports naming the brand
0% of all MAUDE reports · about 195 a year
133
reports, 12 months to August 2026
207 in the 12 months before
100%
classified as malfunction
99.3% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 340 reports that name the brand "Sensor Mmt-5120c2 Instinct 780 5pk Ous 2" (sensor glucose invasive non-adjunctive), received between October 2024 and August 2026; the manufacturer given most often on reports is Medtronic Minimed. Spellings of one product vary from report to report.

133 reports arrived in the 12 months to August 2026, down 36% from 207 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 (100%); across all sensor, glucose, invasive, non-adjunctive reports (product code PQF) death is recorded in 0% and malfunction in 99.3%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are wireless communication problem (53.2%), incorrect, inadequate or imprecise result or readings (42.4%) and calibration problem (14.1%). The patient problems coded most often are hemorrhage/blood loss/bleeding, hypoglycemia and hyperglycemia. 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

03366Sep 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: 0Feb 2023: 0Mar 2023: 0Apr 2023: 0May 2023: 0Jun 2023: 0Jul 2023: 0Aug 2023: 0Sep 2023: 0Oct 2023: 0Nov 2023: 0Dec 2023: 02024Jan 2024: 0Feb 2024: 0Mar 2024: 0Apr 2024: 0May 2024: 0Jun 2024: 0Jul 2024: 0Aug 2024: 0Sep 2024: 0Oct 2024: 3Nov 2024: 8Dec 2024: 122025Jan 2025: 66Feb 2025: 27Mar 2025: 37Apr 2025: 19May 2025: 16Jun 2025: 10Jul 2025: 7Aug 2025: 2Sep 2025: 4Oct 2025: 11Nov 2025: 15Dec 2025: 262026Jan 2026: 20Feb 2026: 15Mar 2026: 7Apr 2026: 21May 2026: 5Jun 2026: 6Jul 2026: 2Aug 2026: 1

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

01202402024: 2320242025: 24020252026: 772026

Event type and report source

Event type, as classified on the report

Death0%0
Injury0%0
Malfunction100%340
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%340
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 325,941 reports carrying product code PQF. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Wireless communication problema wireless connection problem18153.2%52.3%
Incorrect, inadequate or imprecise result or readings14442.4%0.9%
Calibration problem4814.1%0.6%
Unexpected therapeutic results329.4%0.1%
Retraction problem164.7%0.1%
Breakthe device broke41.2%0.3%
Material twisted/bent30.9%0%
Loss of or failure to bond20.6%0%
Activation, positioning or separation problem10.3%0%
Communication or transmission problemthe device could not communicate or transmit10.3%1.3%
Computer software problema software problem10.3%0.1%
Delivered as unsterile product10.3%0%
Patient device interaction problem10.3%0%
Product quality problem10.3%0%

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
Hemorrhage/blood loss/bleeding216.2%
Hypoglycemialow blood sugar205.9%
Hyperglycemiahigh blood sugar185.3%
Itching sensation10.3%
Malaisegeneral feeling of being unwell10.3%
Purulent discharge10.3%
Respiratory tract infectiona respiratory infection10.3%
Skin infection10.3%
Skin inflammation/ irritation10.3%

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

In context

MeasureSensor Mmt-5120c2 Instinct 780 5pk Ous 2Product code PQFAll MAUDE reports
Reports340325,94126,136,888
Share of that pool—0.1%0%
Classified as death, per 1,000 reports009
Classified as injury0%0.7%36.2%
Classified as malfunction100%99.3%62.3%
Filed by the manufacturer100%100%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 PQF

BrandReportsLatest 12 monthsClassified as death
Dexcom G5 Mobile Continuous Glucose Monitoring System332,49260%
Transmitter Mmt-7841zn Gst5g Us42,01314,1860%
Transmitter Mmt-7841zw Gst5g Ous31,57212,3510%
Sensor Mmt-5120c Instinct 780 5pk Ous 12,9421,6810%
Sensor Mmt-5120d1 Instinct 780 1pk Ous 12,8301,7530%
Transmitter Mmt-7841qzw Gst5g Ous Lckout1,6321870%
Sensor Mmt-5100jd1 Simplera 1pk Ous11,3567750%
Sensor Mmt-5100jc1 Simplera 5pk Ous11,1077130%
Sensor Mmt-5120d2 Instinct 780 1pk Ous 21,7871,0620%
Dexcom G6 Continuous Glucose Monitoring System1,339,56261,7100%
Dexcom G5 Mobile Continuous Glucose Monitoring49000%
Sensor Mmt-5100jd2 Simplera 1pk Ous23692390%
Sensor Mmt-5100jd3 Simplera 1pk Ous33221960%
SFTWR MMT-8400 CGM Module iOS3101370%
Xmtr Kit Mmt-7840w1 Grdn 4 9l W2931800%

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-5120c2 Instinct 780 5pk Ous 2 reports

How many FDA reports name Sensor Mmt-5120c2 Instinct 780 5pk Ous 2?

340 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 133 in the latest 12 months.

What kinds of events are reported?

malfunction (100%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

wireless communication problem (53.2%), incorrect, inadequate or imprecise result or readings (42.4%), calibration problem (14.1%), unexpected therapeutic results (9.4%) and retraction problem (4.7%). 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-5120c2 Instinct 780 5pk Ous 2 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.