METHODS AND DEVICES FOR USE OF DEGASSED FLUIDS WITH FLUID ENHANCED ABLATION DEVICES
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Abstract
Devices, systems, and methods for degassing fluid prior to applying fluid to a treatment site during ablation therapy are provided. In one embodiment, an ablation system can include an elongate body, an ablation element, a heating assembly, and a fluid source. Fluid in the fluid source can be at least partially degassed prior to being provided as part of the system, or, in some embodiments, a degassing apparatus can be provided that can be configured to degas fluid within the system prior to applying the fluid to the treatment site. The degassing apparatus can include one or more gas-permeable and fluid-impermeable tubes disposed therein, which can allow gas to be removed from fluid passing through the apparatus. Other exemplary devices, systems, and methods are also provided.
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Citations
39 Claims
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1-18. -18. (canceled)
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19. A method for ablating tissue, comprising:
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inserting an elongate body into a tissue mass; delivering a fluid into the tissue mass from the elongate body, wherein the fluid is at least partially degassed such that the fluid contains one or more gases having less than a predetermined partial pressure; and delivering thermal energy into the tissue mass. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for ablating tissue, comprising:
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inserting an elongate body into a tissue mass; delivering through an inner lumen of the elongate body fluid that is at least partially degassed such that the fluid contains one or more gases having less than a predetermined partial pressure; delivering energy to at least one heating assembly disposed within the inner lumen to heat the at least partially degassed fluid flowing through the lumen prior to the at least partially degassed fluid flowing into the tissue mass through at least one outlet port in the elongate body; and delivering energy to an ablation element, while simultaneously delivering energy to the at least one heating assembly, to ablate the tissue mass. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39)
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Specification