Patent ID: 11911145
Assignee: PULMONX CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. A system for determining collateral ventilation in a patient, the system comprising:
a diagnostic catheter configured to be introduced into a lung compartment via an assisted ventilation system, the diagnostic catheter comprising an occluding member on a distal end configured to inflate such that the lung compartment is isolated;
a display configured to display data generated from a diagnostic procedure performed with the diagnostic catheter while the patient is ventilated via the assisted ventilation system; and
a control unit coupled to the diagnostic catheter, wherein the control unit is configured to:
determine an exhaled volume from the isolated lung compartment over a predetermined period of time while the patient is ventilated via the assisted ventilation system; and
determine that collateral ventilation is present in the isolated lung compartment if the exhaled volume from the isolated lung compartment over the predetermined period of time plateaus above a threshold value and remains substantially flat for a respective flow trend.