MAUDE Adverse Event Report: DRAEGER MEDICAL SYSTEMS, INC INFINITY ACUTE CARE SYSTEM (M540); PHYSIOLOGIC MONITORING SYSTEM, SINGLE-PATIENT

Catalog Number	MS25510
Medical Device Problem Codes	Disconnection (1171); Connection Problem (2900); Intermittent Communication Failure (4038)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/28/2024
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The investigation has just started; results will be provided in a follow-up report.
Event or Problem Description
The customer reported that during a joint replacement surgery, three m540s were unable to connect to the cockpit.The first m540 disconnected while an esu was in use, and two spares were used before the third spare m540 successfully connected.
Additional Manufacturer Narrative
It was confirmed that patient monitoring continued without delay on the m540 after the initial disconnection.Therefore, the decision to replace the m540 was done to utilize the cockpit for the surgery.Review of the logs provided showed that the timing between m540 and cockpit was not aligned.A signature entry following the timing discrepancy was identified (i2c [inter-integrated circuit] master communication error).When this communication error occurs, the cockpit attempts to correct the issue and in the cases it cannot, as a result, the cockpit closes all communications to the m540.When this occurs, the m540 maintains monitoring capability as intended as a stand-alone patient monitor.Notably, discharging the patient from the m540 resolves the issue, re-establishes connection and the patient can be reassigned to the monitor.Attempts to reproduce the disconnect issue at draeger have been unsuccessful in a simulated clinical test setup.Hardware testing was performed including a radio frequency (rf) immunity test on a customer returned system with focus on radio frequency identification (rfid) frequencies and applications.This was performed as it had been observed that systems with a capsule rf card reader nearby had disconnected.This testing was performed at a certified test lab (reference jira case thorsw-59158).The disconnect issue could not be reproduced.Additionally, a comparative study of the m540 i2c bus timing was made on a known good m540 unit as compared to an m540 unit which was returned from the field with a report of a cockpit disconnect.No anomalies were identified.Based on draeger investigation, the following causes of the m540 disconnects were excluded: ¿iacs/m540 hardware defects.No returned device malfunctions were identified.¿use of non-medical grade power cords.¿iacs/m540s being plugged in through the apollo anesthesia power strip instead directly to the ac wall outlet.This was assessed to isolate the iacs power source and exclude any power quality/degradation factors from obtaining power through the apollo workstation's power strip or impacts from other devices connected to the strip.(e.G., ac wall outlet to apollo workstation power supply to iacs power supply to m500 docking station and cockpit).¿compatibility of the m500 firmware in the iacs systems (vg4.2 compatible with firmware versions 4.0 or 4.4).¿emi (electromagnetic interference) from sources in environment.¿potential electrical interference from the site power line coming in.¿site patient profiles in use during disconnections were tested during attempts to recreate the issue at draeger.After extensive investigation where no device malfunctions were identified and the above external factors were excluded, specific root cause cannot be definitively established beyond the potential for an environmental anomaly localized to these operating rooms/sites.Though the specific root cause cannot be determined, based on this investigation, draeger has identified an opportunity to develop software code changes that are intended to prevent the cockpit from disconnecting due to timing alignment issues, regardless of the cause, for a future software release.
Event or Problem Description
The customer reported that during a joint replacement surgery, three m540s were unable to connect to the cockpit.The first m540 disconnected while an esu was in use, and two spares were used before the third spare m540 successfully connected.

• Brand Name: INFINITY ACUTE CARE SYSTEM (M540)
• Common Device Name: PHYSIOLOGIC MONITORING SYSTEM, SINGLE-PATIENT
• Manufacturer (Section D): DRAEGER MEDICAL SYSTEMS, INC; 3135 quarry road; telford PA
• Manufacturer (Section G): DRAEGER MEDICAL SYSTEMS, INC; 3135 quarry road; telford PA 18969
• Manufacturer Contact: 3135 quarry road; telford, PA 18969 ; 9784828529
• MDR Report Key: 18977416
• Report Number: 1220063-2024-00035
• Device Sequence Number: 17712068
• Product Code: MHX
• UDI-Device Identifier: 04049098054409
• UDI-Public: (01)04049098054409(11)200224(93)MS25510-63
• Combination Product (Y/N): N
• PMA/510(K) Number: K113798
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional,User Facility,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 12/10/2024

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 Catalogue Number: MS25510
• 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: 02/28/2024
• Supplement Date Received by Manufacturer: 12/10/2024
• Initial Report FDA Received Date: 03/26/2024
• Supplement Report FDA Received Date: 12/10/2024
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 03/05/2020
• 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
• Concomitant Medical Products and Therapy/Usage Dates: N/A.; N/A.
• Outcome Attributed to Adverse Event: Other
• Patient Sex: Unknown