Delivery devices with coolable energy emitting assemblies
First Claim
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1. A method of treating a subject, comprising:
- moving a delivery device including an elongate shaft through which coolant is capable of flowing, and an ablation assembly into an airway of a bronchial tree, the ablation assembly including a cooling element coupled directly to a distal end of the elongate shaft, and an energy emitter assembly, the energy emitter assembly including a cooling channel also coupled directly at a first end thereof to a distal end of the elongate shaft, and an energy emitter coupled to the cooling channel;
expanding the cooling element to an expanded position such that the cooling element is in contact with a wall of the airway, and the energy emitter extends at least partially circumferentially around the cooling element;
causing energy to be delivered from the energy emitter to damage nerve tissue of a nerve trunk extending along the airway; and
circulating the coolant through the elongate shaft, the cooling element, and the cooling channel of the energy emitter assembly while causing the energy to be delivered so as to cool the wall of the airway to limit or prevent cell death in tissue located between the nerve tissue and the energy emitter, and adjacent to the energy emitter.
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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.
1436 Citations
14 Claims
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1. A method of treating a subject, comprising:
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moving a delivery device including an elongate shaft through which coolant is capable of flowing, and an ablation assembly into an airway of a bronchial tree, the ablation assembly including a cooling element coupled directly to a distal end of the elongate shaft, and an energy emitter assembly, the energy emitter assembly including a cooling channel also coupled directly at a first end thereof to a distal end of the elongate shaft, and an energy emitter coupled to the cooling channel; expanding the cooling element to an expanded position such that the cooling element is in contact with a wall of the airway, and the energy emitter extends at least partially circumferentially around the cooling element; causing energy to be delivered from the energy emitter to damage nerve tissue of a nerve trunk extending along the airway; and circulating the coolant through the elongate shaft, the cooling element, and the cooling channel of the energy emitter assembly while causing the energy to be delivered so as to cool the wall of the airway to limit or prevent cell death in tissue located between the nerve tissue and the energy emitter, and adjacent to the energy emitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of delivering energy, the method comprising:
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causing energy to be delivered from an electrode fluidly coupled to a cooling channel with a substantially uniform voltage across an electrode surface in contact with a tissue without contacting the tissue with edges of the electrode, circulating coolant through the cooling channel while the energy is being delivered from the electrode to cool the electrode surface in contact with the tissue, wherein the electrode is movable with respect to an underlying expandable member configured to place the electrode surface in contact with the tissue, and further wherein an elongate portion of the electrode is configured to extend at least partially circumferentially around the expandable member when the expandable member is in an expanded state, and wherein the cooling channel is directly coupled to one of a coolant inflow lumen and a coolant outflow lumen, and wherein the expandable member is directly coupled to the other of the coolant inflow lumen and the coolant outflow lumen. - View Dependent Claims (10, 11, 12, 13)
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14. A method of treating a subject, comprising:
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moving a delivery device including an elongate shaft and an ablation assembly, and through which coolant is capable of flowing, into an airway of a bronchial tree, the ablation assembly including— an expandable member, a cooling channel, and an energy emitter coupled to the cooling channel; expanding the expandable member to an expanded position such that the energy emitter is in contact with a wall of the airway; causing energy to be delivered from the energy emitter to damage nerve tissue of a nerve trunk extending along the airway; and circulating coolant through the delivery device while causing the energy to be delivered to the nerve tissue so as to cool a wall of the airway to limit or prevent cell death in tissue located between the nerve tissue and the energy emitter, wherein the cooling channel is coupled directly to a first lumen selected from a coolant inflow lumen and a coolant outflow lumen of the elongate shaft such that the coolant flows directly between the cooling channel and the first lumen without entering the expandable member.
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Specification