Guardian 4 Glucose Sensor, REF: MMT-7040A, MMT-7040C1, MMT-7040C2, MMT-7040C3, MMT-7040D1, MMT-70...
FDA Device Recall #Z-1005-2024 — Class II — November 15, 2023
Recall Summary
| Recall Number | Z-1005-2024 |
| Classification | Class II — Moderate risk |
| Date Initiated | November 15, 2023 |
| Status | Ongoing |
| Voluntary | Voluntary: Firm initiated |
Recalling Firm
| Firm | Medtronic MiniMed, Inc. |
| Location | Northridge, CA |
| Product Type | Devices |
| Quantity | 114,758 |
Product Description
Guardian 4 Glucose Sensor, REF: MMT-7040A, MMT-7040C1, MMT-7040C2, MMT-7040C3, MMT-7040D1, MMT-7040D2, MMT-7040MA, MMT-7040QC1, MMT-7040QC2, MMT-7040QC3
Reason for Recall
Some sensors may have a glucose oxidase (GOX) layer thickness outside of specification (5.5 to 9.2 ¿m). A non-conforming GOX layer thickness could impact sensor function (sensor glucose value) or loss of sensor function due to the sensor layer being too thin. The potential impact resulting from this issue ranges from user inconvenience to over/under delivery of insulin, possibly resulting in hyperglycemia or hypoglycemia, if the sensor glucose values are affected. The issue was identified by the manufacturing team during the execution of Filmetrics Measurement for a Guardian Sensor lot.
Distribution Pattern
Worldwide - US Nationwide distribution including in the states of PR, AK, AL, AR, AZ, CA, CO, CT, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, WA, WI, WV, WY and the countries of Austria, Belgium, Canary Islands, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, India, Ireland, Israel, Italy, Kazakhstan, Kuwait, Liechtenstein, Luxembourg, Netherlands, Northern Ireland, Norway, Poland, Portugal, Romania, Saudi Arabia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.
Lot / Code Information
REF/UDI-DI/Lot: MMT-7040A/20763000413389/HG72B2C, HG72CQQ, HG73VB7, HG73VC8, HG73VFT, HG73WFR, HG7441E, HG745F9, HG7486X, HG74AJ1, HG74SUR, HG74T9Q, HG74U36, HG78LMS, HG79Y9U; MMT-7040C1/00763000555276, 00763000413392, 20763000413396, 20763000555270, 20763000712475, 00763000712471/F1323, F1923, G0323, G1723, G2023, G2623, G2923, HG6RV7S, HG6TGNU, HG6TJ2Y, HG6TW97, HG6TWVU, HG6UNF2, HG6V8NN, HG6VB8S, HG6VNX3, HG6WNE1, HG6XFPR, HG6XH54, HG6XQCG, HG6XZJX, HG6Y0W1, HG6Y3QN, HG6YEK6, HG6YFAF, HG6YFHL, HG6YJAR, HG6YJBD, HG6YNGD, HG6Z7N5, HG6ZARN, HG7038Y, HG70CW5, HG70DAM, HG70JSU, HG70LRC, HG70QWA, HG71VMZ, HG72DB5, HG72G9C, HG72NV9, HG72R1P, HG72RBD, HG72SE3, HG72TPT, HG72TRV, HG72V3J, HG72ZFP, HG7340A, HG73EJX, HG73RNR, HG745SV, HG747E3, HG7480Q, HG749N6, HG74F93, HG75TSX, HG75XA1, HG76HFH, HG76RYY; MMT-7040C2/20763000555287/HG6RC39, HG6RXB5, HG6T4T7, HG6T8RV, HG6TJ2Y, HG6WKZU, HG6WLKS, HG6XFPR, HG6XH54, HG6XLSD, HG6XNH3, HG6Y5C6, HG6Z1X5, HG713AK, HG73EGX, HG73EJX, HG73FJP, HG73Q24, HG73QPM, HG73RNR, HG7619X, HG764J9, HG76CWC, HG77FMK; MMT-7040C3/20763000555294/HG6XNH3, HG73RNR; MMT-7040D1/00763000413484/HG6THY1, HG6V7VV; MMT-7040D2/00763000413491/HG6TL44; MMT-7040MA/20763000519692/HG74460; MMT-7040QC1/00763000555313, 20763000555317/HG6WT9A, HG6WUGE, HG73PH3; MMT-7040QC2/20763000555324, 763000555320/HG6WT9A; MMT-7040QC3/20763000555331/HG6WT9A
Other Recalls from Medtronic MiniMed, Inc.
| Recall # | Classification | Product | Date |
|---|---|---|---|
| Z-1635-2026 | Class II | MiniMed" 780G - MMT-1884 MiniMed" 780G - MMT-1... | Jan 30, 2026 |
| Z-0958-2026 | Class II | InPen App, Model/CFN Number: MMT-8061 (Android ... | Nov 13, 2025 |
| Z-1238-2026 | Class II | MiniMed 780G Insulin Pump Catalog Numbers: MMT... | Nov 2, 2025 |
| Z-0594-2026 | Class II | CareLink Clinic, REF: MMT-7350 | Oct 21, 2025 |
| Z-2496-2025 | Class II | InPen App, CFN: MMT-8060 (iOS Users) and MMT-80... | Jun 16, 2025 |
Frequently Asked Questions
Contact your healthcare provider and the device manufacturer immediately. Check whether your specific model number and lot number are included in the recall scope. For external devices, stop using the affected product and arrange a replacement. For implanted devices, do not panic — removal is typically not required unless the risk assessment clearly indicates it. Your physician will guide you based on your individual clinical situation and the FDA's recommended actions. Report any adverse effects you may have experienced to FDA MedWatch at 1-800-FDA-1088.
Class I recalls indicate a reasonable probability of serious adverse health consequences or death from the defect. Class II recalls involve products that may cause temporary or medically reversible adverse health consequences, or where serious consequences are remote. Class III recalls cover products not likely to cause any adverse health consequences, typically involving technical regulatory violations. The classification guides urgency — Class I recalls require immediate action, while Class III may simply involve returning a product or acknowledging a labeling change. Always read the specific recall notice for recommended patient actions.
Report problems with medical devices to the FDA through MedWatch at 1-800-FDA-1088 or online at FDA.gov/safety/medwatch. Healthcare facilities are required by law to report device-related serious injuries and deaths. Patients and consumers can also report voluntarily. Include the device name, manufacturer, model number, and a description of the problem and any patient outcome. Reports from patients and clinicians help the FDA identify emerging safety signals and may trigger investigations that lead to recalls of dangerous devices.
What Should You Do?
Stop using this device if you are affected by this recall. Contact your healthcare provider and the manufacturer immediately for guidance. Report adverse events to FDA MedWatch.