Methods and systems for determining physiologic characteristics for treatment of the esophagus
First Claim
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1. A method for measuring an inner diameter of a body lumen comprising:
- inserting a balloon in the body lumen;
inflating the balloon inside the body lumen using an expansion medium; and
monitoring a mass of the expansion medium inside the balloon.
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Abstract
A method and apparatus for treating abnormal mucosa in the esophagus is disclosed, such that the depth of the treated tissue is controlled. The depth of ablation is controlled by monitoring the tissue impedance and/or the tissue temperature. A desired ablation depth is also achieved by controlling the energy density or power density, and the amount of time required for energy delivery. A method and apparatus is disclosed for measuring an inner diameter of a body lumen, where a balloon is inflated inside the body lumen at a fixed pressure.
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Citations
48 Claims
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1. A method for measuring an inner diameter of a body lumen comprising:
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inserting a balloon in the body lumen;
inflating the balloon inside the body lumen using an expansion medium; and
monitoring a mass of the expansion medium inside the balloon. - View Dependent Claims (2, 3, 4, 5, 6)
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7-17. -17. (canceled)
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18. A method for treating abnormal tissue inside a body lumen, the method comprising:
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automatically determining an inner diameter of the body lumen at a location proximal to the abnormal tissue;
deploying an electrode structure at a surface of the tissue at the proximal location; and
delivering energy to the electrode structure for treating the tissue. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An apparatus for treating a tissue inside a body lumen comprising:
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an electrode structure adapted to be positioned at a surface of the tissue inside the body lumen, wherein the electrode structure is coupled to an expansion member; and
a generator for producing and delivering energy to the electrode structure;
wherein the generator is adapted to automatically inflate the expansion member inside the body lumen and control the pressure inside the expansion member during treatment of the tissue. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. An apparatus for treating a tissue inside a body lumen comprising:
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an electrode structure adapted to be positioned at a surface of the tissue inside the body lumen, wherein the electrode structure is coupled to an expansion member; and
a generator for producing, delivering and controlling energy delivered to the electrode structure;
wherein the generator is adapted to determine an inner diameter of the body lumen.
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Specification