Patent ID: 8740895

Claim:
A delivery device, comprising: an elongate body having a coolant delivery lumen; and an ablation assembly positionable in an airway of a bronchial tree, including: an energy emitter assembly configured to output energy to ablate targeted tissue of the bronchial tree; and a deployable element movable from a collapsed state to an expanded state, the deployable element configured to contain and circulate a coolant delivered through the coolant delivery lumen and being movable into contact with a wall of the airway, wherein the deployable element has a surface which is configured for optical coupling with an optical element which is configured to be positioned in the airway outside of the deployable element, the optical element facing the surface of the deployable element such that the energy emitter assembly is viewable through the surface of the deployable element with the optical element when the deployable element is in the expanded state or a partially expanded state.