Delivery devices with coolable energy emitting assemblies
First Claim
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1. A method, comprising:
- delivering an ablation device within an airway of a bronchial tree of a patient, the ablation device including a deployable element movable from a collapsed state to an expanded state, an energy emitter assembly having a tissue-contacting portion, and a cooling assembly including a pressure reducing element and an expansion chamber, wherein the deployable element is in the collapsed state;
expanding the deployable element from the collapsed state to the expanded state so as to place the tissue-contacting portion of the energy emitter assembly into contact with a wall of the airway, wherein the tissue-contacting portion is elongated at least partially circumferentially about a longitudinal axis of the deployable element and is configured to move with respect to an underlying surface of the deployable element in a direction of the longitudinal axis of the deployable element when the deployable element is in the expanded state;
causing energy to be delivered from the energy emitter assembly to ablate targeted tissue in or along the airway wall; and
causing a working fluid to be delivered through the pressure reducing element to reduce a temperature of the working fluid so as to cool the tissue-contacting portion of the energy emitter assembly, thereby cooling tissue between the tissue-contacting portion of the energy emitter assembly and the targeted tissue.
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Abstract
Systems, delivery devices, and methods to treat to ablate, damage, or otherwise affect tissue. The treatment systems are capable of delivering a coolable ablation assembly that ablates targeted tissue without damaging non-targeted tissue. The coolable ablation assembly damages nerve tissue to temporarily or permanently decrease nervous system input.
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Citations
10 Claims
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1. A method, comprising:
- delivering an ablation device within an airway of a bronchial tree of a patient, the ablation device including a deployable element movable from a collapsed state to an expanded state, an energy emitter assembly having a tissue-contacting portion, and a cooling assembly including a pressure reducing element and an expansion chamber, wherein the deployable element is in the collapsed state;
expanding the deployable element from the collapsed state to the expanded state so as to place the tissue-contacting portion of the energy emitter assembly into contact with a wall of the airway, wherein the tissue-contacting portion is elongated at least partially circumferentially about a longitudinal axis of the deployable element and is configured to move with respect to an underlying surface of the deployable element in a direction of the longitudinal axis of the deployable element when the deployable element is in the expanded state;
causing energy to be delivered from the energy emitter assembly to ablate targeted tissue in or along the airway wall; and
causing a working fluid to be delivered through the pressure reducing element to reduce a temperature of the working fluid so as to cool the tissue-contacting portion of the energy emitter assembly, thereby cooling tissue between the tissue-contacting portion of the energy emitter assembly and the targeted tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- delivering an ablation device within an airway of a bronchial tree of a patient, the ablation device including a deployable element movable from a collapsed state to an expanded state, an energy emitter assembly having a tissue-contacting portion, and a cooling assembly including a pressure reducing element and an expansion chamber, wherein the deployable element is in the collapsed state;
Specification