Vapor ablation systems and methods
First Claim
Patent Images
1. A vapor delivery system, comprising:
- a generator unit;
a cradle disposed in the generator unit;
a syringe assembly disposed in the cradle and configured to interact with the cradle to deliver a fluid at a controlled rate, wherein a barrel of the syringe assembly directly contacts the cradle;
an inductive heating system fluidly coupled to the syringe assembly and configured to receive fluid from the syringe assembly;
a force sensor disposed in the cradle and configured to contact the cradle and/or the syringe assembly to generate an electrical signal proportional to a force exerted on the force sensor by the cradle and/or the syringe assembly; and
an electronic controller configured to control delivery of fluid and RF power to the inductive heating system for the production of vapor, to calibrate the electrical signal as representing a fluid pressure within the syringe assembly, and to stop delivery of the fluid and/or the RF power to the inductive heating system when the fluid pressure falls outside of a predetermined range of fluid pressures.
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Abstract
A vapor delivery system and method is provided that is adapted for treating prostate tissue. The vapor delivery system includes a vapor delivery needle configured to deliver condensable vapor energy to tissue. In one method, the vapor delivery system is advanced transurethrally into the patient to access the prostate tissue. The vapor delivery system includes a generator unit and an inductive heating system to produce a high quality vapor for delivery to tissue. Methods of use are also provided.
287 Citations
20 Claims
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1. A vapor delivery system, comprising:
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a generator unit; a cradle disposed in the generator unit; a syringe assembly disposed in the cradle and configured to interact with the cradle to deliver a fluid at a controlled rate, wherein a barrel of the syringe assembly directly contacts the cradle; an inductive heating system fluidly coupled to the syringe assembly and configured to receive fluid from the syringe assembly; a force sensor disposed in the cradle and configured to contact the cradle and/or the syringe assembly to generate an electrical signal proportional to a force exerted on the force sensor by the cradle and/or the syringe assembly; and an electronic controller configured to control delivery of fluid and RF power to the inductive heating system for the production of vapor, to calibrate the electrical signal as representing a fluid pressure within the syringe assembly, and to stop delivery of the fluid and/or the RF power to the inductive heating system when the fluid pressure falls outside of a predetermined range of fluid pressures. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vapor delivery system, comprising:
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a generator unit; a cradle disposed in the generator unit; a syringe assembly disposed in the cradle and configured to interact with the cradle to deliver a fluid at a controlled rate; an inductive heating system fluidly coupled to the syringe assembly and configured to receive fluid from the syringe assembly; a force sensor disposed between the cradle and the generator and configured to generate an electrical signal proportional to a force exerted on the force sensor by the cradle; and an electronic controller configured to control delivery of fluid and RF power to the inductive heating system for the production of vapor, to calibrate the electrical signal as representing a fluid pressure within the syringe assembly, and to stop delivery of the fluid and/or the RF power to the inductive heating system when the fluid pressure falls outside of a predetermined range of fluid pressures. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A vapor delivery system, comprising:
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a generator unit; a cradle disposed in the generator unit; a syringe assembly disposed in the cradle and configured to interact with the cradle to deliver a fluid at a controlled rate; an inductive heating system fluidly coupled to the syringe assembly and configured to receive fluid from the syringe assembly; a force sensor disposed in the cradle and configured to contact the cradle and/or the syringe assembly to generate an electrical signal proportional to a lateral force exerted on the force sensor by the cradle and/or the syringe assembly in a lateral direction, wherein the lateral direction is a direction perpendicular to a longitudinal axis of the syringe assembly; and an electronic controller configured to control delivery of fluid and RF power to the inductive heating system for the production of vapor, to calibrate the electrical signal as representing a fluid pressure within the syringe assembly, and to stop delivery of the fluid and/or the RF power to the inductive heating system when the fluid pressure falls outside of a predetermined range of fluid pressures. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification