Methods and systems for determining physiologic characteristics for treatment of the esophagus
First Claim
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1. An apparatus for treating a tissue inside a body lumen, comprising:
- a treatment catheter having an expansion member, an electrode array on the expansion member, a pneumatic connector in communication with the interior of the expansion member and an electrical connection connected to the electrode array; and
a generator comprising;
an RF energy source and a generator electrical connector to attach to the electrical connection,a pump and a generator pneumatic connector to attach to the pneumatic connector;
a mass-flow meter; and
one or more pressure sensors, whereinthe generator is configured to;
determine a dimension of a distended body lumen utilizing one or more measurements from at least the mass-flow meter and the one or more pressure sensors; and
inflate the expansion member and provide sufficient energy to the electrode array to sear the lining of the distended lumen based on the dimension of the distended body lumen determined by the generator.
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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
10 Claims
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1. An apparatus for treating a tissue inside a body lumen, comprising:
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a treatment catheter having an expansion member, an electrode array on the expansion member, a pneumatic connector in communication with the interior of the expansion member and an electrical connection connected to the electrode array; and a generator comprising; an RF energy source and a generator electrical connector to attach to the electrical connection, a pump and a generator pneumatic connector to attach to the pneumatic connector; a mass-flow meter; and one or more pressure sensors, wherein the generator is configured to; determine a dimension of a distended body lumen utilizing one or more measurements from at least the mass-flow meter and the one or more pressure sensors; and inflate the expansion member and provide sufficient energy to the electrode array to sear the lining of the distended lumen based on the dimension of the distended body lumen determined by the generator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification