Patent ID: 8523782

Claim:
A system for detecting collateral ventilation into a lung compartment in a patient, the system comprising: a catheter having a lumen and adapted to be introduced transtracheally to a bronchus leading to a target lung compartment; an occlusion member on a distal region of the catheter, said occlusion member being adapted to selectively occlude the bronchus; a one-way valve coupled with a proximal region of the catheter and in fluid communication with the lumen; a video camera adapted to capture video images of the one-way valve; and wherein the occlusion member is configured to be deployed in the bronchus to prevent air from being inhaled into the target lung compartment through the bronchus, wherein the catheter is configured to allow air exhaled from the target lung compartment to pass through the lumen and the one-way valve, and wherein the catheter has sufficient overall length so that the one-way valve is located outside the patient during use.