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US 10,881,443 B2Granted
Devices and methods for shaping therapy in fluid enhanced ablation
AssigneeThermedical, Inc.
InventorMichael G. Curley
Life of this patent
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Abstract
Devices and methods for shaping an ablation treatment volume formed in fluid enhanced ablation therapy are provided. The devices and methods disclosed herein utilize the interaction of fluids to create ablation treatment volumes having a variety of shapes. In one embodiment, a method for forming an ablation treatment volume having a desired shape includes delivering therapeutic energy to tissue to form an ablation treatment volume and simultaneously delivering a first fluid and a second fluid to the tissue. The first and second fluids can convect the therapeutic energy in a desired direction such that the ablation treatment volume has a desired shape.
Claims20
An ablation device, comprising:
- at least one elongate body;
- a first outlet port and a second outlet port formed in the at least one elongate body and configured to couple to a fluid source;
- at least one ablation element configured to couple to an energy source;
- wherein the device is configured to simultaneously emit energy from the at least one ablation element and deliver a first fluid and a second fluid from the first and second outlet ports respectively such that the first and second fluids can convect the energy in a desired direction to define a treatment volume having a predetermined shape,
- wherein the first fluid delivered from the first outlet port has a therapeutic temperature capable of causing irreversible thermal damage to tissue and the simultaneously delivered second fluid from the second outlet port has a temperature less than the therapeutic temperature to selectively quench and prevent tissue damage.
2 more elements
An ablation device, comprising:
- an elongate shaft;
- a first elongate body centrally disposed on and extending from a distal end of the elongate shaft, the first elongate body having an inner lumen extending therethrough, at least one outlet port, at least one ablation element disposed along a length thereof, and a heater element disposed within the inner lumen;
- a second elongate body extending from the distal end of the elongate shaft and offset from the first elongate body along an axis that defines a diameter of the elongate shaft, the second elongate body having an inner lumen extending therethrough and at least one outlet port;
- a third elongate body extending from the distal end of the elongate shaft and offset from the first elongate body along the axis in a direction opposite of the second elongate body offset, the third elongate body having an inner lumen extending therethrough and at least one outlet port;
- wherein the device is configured to simultaneously deliver a first fluid from the first elongate body and a second fluid from the second and third elongate bodies such that the first and second fluids interact to shape a non-spherical ablation treatment volume,
- wherein at least one of the elongate bodies is rigidly attached to the distal end of the elongate shaft.
3 more elements
An ablation device, comprising:
- at least one elongate body;
- a first outlet port and a second outlet port formed in the at least one elongate body and configured to couple to a fluid source;
- at least one ablation element configured to couple to an energy source;
- wherein the device is configured to simultaneously emit energy from the at least one ablation element and deliver a first fluid and a second fluid from the first and second outlet ports respectively such that the first and second fluids can convect the energy in a desired direction to define a treatment volume having a predetermined shape,
- wherein the at least one elongate body comprises a single elongate body having an inner lumen extending therethrough with first and second opposed longitudinal portions configured to deliver the first fluid, and having third and fourth opposed longitudinal portions configured to deliver the second fluid, the third and fourth portions being radially offset from the first and second portions.
2 more elements
An ablation device, comprising:
- at least one elongate body;
- a first outlet port and a second outlet port formed in the at least one elongate body and configured to couple to a fluid source;
- at least one ablation element configured to couple to an energy source;
- wherein the device is configured to simultaneously emit energy from the at least one ablation element and deliver a first fluid and a second fluid from the first and second outlet ports respectively such that the first and second fluids can convect the energy in a desired direction to define a treatment volume having a predetermined shape,
- wherein the at least one elongate body comprises a single elongate body;
- wherein the first outlet port is formed in a proximal portion of a sidewall of the elongate body;
- wherein the second outlet port is formed in a distal portion of the sidewall of the elongate body;
- and
- wherein the ablation device is configured to deliver the first and second fluids to the first and second outlet ports, respectively, through channels not in fluid communication with each other.
6 more elements
Dependencies are inferred from the claim text.