MAUDE Adverse Event Report: PULMONX CORPORATION ZEPHYR ENDOBRONCHIAL VALVE

Model Number	ZEPHYR 5.5 DUAL MARKER EDC
Medical Device Problem Code	Material Split, Cut or Torn (4008)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	05/20/2026
Type of Reportable Event	Malfunction
Event or Problem Description
Two incidents occurred during a valve placement procedure, two separate delivery catheters had a sizing wing break off in the patient after measurement of the airway.All wings were removed from the patient using suction.The following device deficiency was not associated with an adverse event.

• Brand Name: ZEPHYR ENDOBRONCHIAL VALVE
• Common Device Name: ENDOBRONCHIAL VALVE
• Manufacturer (Section D): PULMONX CORPORATION; 700 chesapeake drive; redwood city CA 94063
• Manufacturer Contact: 700 chesapeake drive; redwood city, CA 94063
• MDR Report Key: 25399407
• Report Number: 3007797756-2026-00026
• Device Sequence Number: 10718440
• Product Code: NJK
• UDI-Device Identifier: 00811907031222
• UDI-Public: (01)00811907031222(10)507682V50(17)280611
• Combination Product (Y/N): N
• Initial Reporter State: CA
• Initial Reporter Country: US
• PMA/510(K) Number: P180002
• 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: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 06/04/2026

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: ZEPHYR 5.5 DUAL MARKER EDC
• Device Catalogue Number: EDC-TS-5.5-DM
• Device Lot Number: 507682-V5.0
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 05/20/2026
• Initial Report FDA Received Date: 06/04/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 06/11/2025
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Sex: Unknown