Biograph mMR (Siemens) – Magnet Venting Issue (2025)

Check Your Product

According to the U.S. Food and Drug Administration (FDA)

Reason for Recall

As stated by FDA

There is a potential for an ice blockage to form or currently exist within the magnet venting system. In the event of a quench, helium gas may be unable to escape through the designed venting paths, leading to a pressure build-up within the helium containment system. This pressure build-up could ultimately rupture the helium containment system, potentially resulting in a helium leak into the scanning room.

Recommended Action

Per FDA guidance

Siemens Healthcare notified consignees on about 08/28/2025 via letter. Consignees were informed that Siemens Customer Service Organization will conduct an inspection of affected units to address the issue. If customers identify issues, they are cautioned to not reboot the system, to call their local Siemens Healthineers service organization, and grant access to the system. Siemens will inspect devices and perform a correction, if needed. Consignees were also instructed to ensure all users or customers are notified of the issue and to maintain the Customer Safety Advisory Notice. Consignees were also requested to confirm receipt and acknowledgement of the notification. Siemens expanded the recall and notified consignees on about 10/01/2025 via letter. These notifications included the same information as initially sent to consignees. A follow up communication was sent to consignees on about 10/15/2025 via letter. This informed users of further details and additional necessary safety actions. If a specific "Magnent Supervision" error message appears on the host computer, no further scans can be performed, and you are requested to: not reboot the system, remove the patient from the system, lock/secure all access to the scanning room with the system remaining energized at field, post a DO NOT USE notice on or near the device, and call the Siemens Healthineers service organization. In addition, Siemens reminded users that the Magnet Stop button is only intended for emergencies. DO NOT initiate a manual quench of the magnet unless there is an emergency. Ensure all designated emergency exit routes remain unobstructed and are marked. Consignees were also instructed to ensure all users or customers are notified of the issue, to maintain the Customer Safety Advisory Notice is retained in product related records, to confirm receipt and acknowledgement of the notification, and if the affected system is no longer in the consignee's possession, notify the new owner.