MAUDE Adverse Event Report: Pulmonx Corporation Zephyr Endobronchial Valve

Model Number	Zephyr 4.0 J 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	07/06/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
An incident occurred during a valve placement procedure where one of the delivery catheter's wings broke off in the patient.The wing was located and removed from the patient.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: 50019396
• Report Number: 3007797756-2026-00041
• Device Sequence Number: 10578847
• Product Code: NJK
• UDI-Device Identifier: 00811907030621
• 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): 07/24/2026

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 4.0 J EDC
• Device Catalogue Number: EDC-TS-4.0-J
• Device Lot Number: 507031-V5.0
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 07/06/2026
• Initial Report FDA Received Date: 07/27/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 12/07/2023
• 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