MAUDE Adverse Event Report: MAQUET CRITICAL CARE AB SERVO-S BASE UNIT; VENTILATOR, CONTINUOUS, FACILITY USE

Model Number	6640440
Medical Device Problem Code	Failure of Device to Self-Test (2937)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	05/12/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
On-site investigation was performed by our field service engineer.The claimed issue was reproduced during troubleshooting.According to received information in service report, air gas module has been determined as defective and require replacement.The air gas module regulates the inspiratory gas flow and a faulty air gas module may affect the delivered volume or gas mixture (o2/air).The reported issue was confirmed in provided device's logs.The defective part has not been returned fot the further investigation.Our conclusion is that the air gas module was the cause of the failure.Event site telephone: (b)(6).
Event or Problem Description
It was reported that the ventilator failed internal leakage test, pressure transducer test, safety valve tests, o2 cell/sensor test, flow transducer test and patient circuit test during pre-use check.There was no patient involvement.Manufacturer's ref.#: (b)(4).

• Brand Name: SERVO-S BASE UNIT
• Common Device Name: VENTILATOR, CONTINUOUS, FACILITY USE
• Manufacturer (Section D): MAQUET CRITICAL CARE AB; roentgenvagen 2; solna
• Manufacturer (Section G): MAQUET CRITICAL CARE AB; roentgenvagen 2; solna
• Manufacturer Contact: caroline kabbabe ; roentgenvagen 2; solna
• MDR Report Key: 25428993
• Report Number: 8010042-2026-0000758
• Device Sequence Number: 10284885
• Product Code: CBK
• UDI-Device Identifier: 07325710001127
• UDI-Public: (01)07325710001127(11)200326
• Combination Product (Y/N): N
• Initial Reporter Country: CH
• PMA/510(K) Number: K123149
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,User Facility,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date (Section B): 06/08/2026

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: 6640440
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 05/12/2026
• Initial Report FDA Received Date: 06/08/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 03/26/2020
• Is the Device Labeled for Single Use? (Y/N): No
• Usage of Device: Reuse
• Patient Sequence Number: 1
• Patient Sex: Unknown