MAUDE Adverse Event Report: DRÄGERWERK AG & CO. KGAA ATLAN A350; ANESTHESIA UNITS

Model Number	8621500
Medical Device Problem Codes	Gas Output Problem (1266); Failure to Analyze Signal (1539); Failure to Deliver (2338)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	07/28/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that the device posted a ventilator failure alarm during use.No injury reported.
Additional Manufacturer Narrative
The investigation is ongoing.Results will be provided with a separate follow-up-report.
Additional Manufacturer Narrative
The investigation was performed based on the given information including the electronic log file.The reported issue could be confirmed and it was determined that a failure of the optical incremental encoder was the root cause.The device detected the failure and reacted as specified for this situation.In case of such failure, atlan will still provide fresh gas (including agent if a vaporizer is connected) and monitoring allowing for manual ventilation.Based on the currently available information, the risk related to the specific situation has been initially evaluated.Since similar complaints have been reported recently, a capa (corrective and preventive actions for products) was initiated.
Event or Problem Description
It was reported that the device posted a ventilator failure alarm during use.No injury reported.

• Brand Name: ATLAN A350
• Common Device Name: ANESTHESIA UNITS
• Manufacturer (Section D): DRÄGERWERK AG & CO. KGAA; moislinger allee 53-55; lübeck ; GM
• Manufacturer (Section G): DRÄGERWERK AG & CO. KGAA; moislinger allee 53-55; lübeck 23558 ; GM 23558
• Manufacturer Contact: moislinger allee 53-55; lübeck 23558 ; 4518822868
• MDR Report Key: 22910734
• Report Number: 9611500-2025-00481
• Device Sequence Number: 18358610
• Product Code: BSZ
• UDI-Device Identifier: 04048675556176
• UDI-Public: (01)04048675556176(11)230929(93)8621500-15
• Combination Product (Y/N): N
• Initial Reporter Country: GM
• PMA/510(K) Number: K230931
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: User Facility,Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 10/29/2025

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: 8621500
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 08/15/2025
• Supplement Date Received by Manufacturer: 10/10/2025
• Initial Report FDA Received Date: 08/28/2025
• Supplement Report FDA Received Date: 10/29/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 11/29/2023
• Is the Device Labeled for Single Use? (Y/N): No
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Reuse
• Patient Sequence Number: 1
• Patient Sex: Unknown