Methods and apparatuses for remodeling tissue of or adjacent to a body passage
First Claim
1. A method for treating tissue near a body passageway using an apparatus including a catheter having a plurality of electrodes, a radio-frequency energy generator, and a controller coupling the energy generator to the plurality of electrodes and configured to selectively energize the electrodes, the method comprising:
- (a) using the apparatus to subject the tissue near the body passageway to a plurality of energy treatment cycles, wherein a treatment cycle comprises;
(i) determining desired voltages for at least a subset of the electrodes for maintaining a predetermined target temperature profile proximate the subset of electrodes;
(ii) setting an output voltage of the energy generator to correspond to the desired voltage determined for one of the electrodes;
(iii) energizing at least some of the electrodes at the output voltage to deliver energy to the body passageway;
(b) wherein the electrode used to set the output voltage changes in subsequent treatment cycles in at least some instances; and
wherein determining a desired voltage for an electrode of the subset of electrodes is based on a previous output voltage applied to the electrode of the subset of electrodes.
1 Assignment
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Accused Products
Abstract
Medical devices and methods for making and using the same are disclosed. An example method may include a method for treating tissue near a body passageway using an apparatus including a catheter having a plurality of electrodes, a radio-frequency energy generator, and a controller coupling the energy generator to the plurality of electrodes and configured to selectively energize the electrodes. The method may include using the apparatus to subject the tissue near the body passageway to a plurality of energy treatment cycles. The treatment cycle may include determining desired voltages for at least a subset of the electrodes for maintaining a predetermined target temperature profile proximate the subset of electrodes, setting an output voltage of the energy generator to correspond to the desired voltage determined for one of the electrodes, and energizing at least some of the electrodes at the output voltage to deliver energy to the body passageway.
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Citations
18 Claims
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1. A method for treating tissue near a body passageway using an apparatus including a catheter having a plurality of electrodes, a radio-frequency energy generator, and a controller coupling the energy generator to the plurality of electrodes and configured to selectively energize the electrodes, the method comprising:
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(a) using the apparatus to subject the tissue near the body passageway to a plurality of energy treatment cycles, wherein a treatment cycle comprises; (i) determining desired voltages for at least a subset of the electrodes for maintaining a predetermined target temperature profile proximate the subset of electrodes; (ii) setting an output voltage of the energy generator to correspond to the desired voltage determined for one of the electrodes; (iii) energizing at least some of the electrodes at the output voltage to deliver energy to the body passageway; (b) wherein the electrode used to set the output voltage changes in subsequent treatment cycles in at least some instances; and wherein determining a desired voltage for an electrode of the subset of electrodes is based on a previous output voltage applied to the electrode of the subset of electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for treating a body passageway using an apparatus comprising an energy delivery device having a plurality of discrete energy delivery sites, an energy generator, and a controller coupling the energy delivery sites to the energy generator and configured to selectively energize the plurality of energy delivery sites, the method comprising:
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(a) using the apparatus to subject the body passageway to a plurality of treatment cycles, wherein at least some of the treatment cycles comprise; (i) determining a plurality of possible output levels for at least a subset of the energy delivery sites for maintaining a predetermined parameter of the treatment; (ii) setting an actual output level of the energy generator to correspond to the possible output level determined for one of the energy delivery sites; (iii) energizing at least some of the energy delivery sites at the actual output level to deliver energy to the body passageway; (b) wherein the energy delivery site used to set the actual output level changes from treatment cycle to treatment cycle in at least some instances; and wherein determining the possible output level for one of the energy delivery sites is based on an output level applied at the energy delivery site in an immediately preceding treatment cycle. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for treating tissue near a body passageway using an apparatus including a catheter having a plurality of monopolar electrodes, a radio-frequency energy generator, and a controller coupling the energy generator to the monopolar electrodes and configured to selectively energize the monopolar electrodes, the method comprising:
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(a) using the apparatus to subject the tissue near the body passageway to a plurality of energy treatment cycles, where a treatment cycle comprises; (i) determining desired voltages for at least a subset of the monopolar electrodes for determining a predetermined target temperature profile proximate the subset of monopolar electrodes; (ii) setting an output voltage of the energy generator to correspond to the desired voltage determined for one of the monopolar electrodes; (iii) energizing at least one of the monopolar electrodes at the output voltage to deliver energy to the body passageway; (b) wherein the monopolar electrode used to set the output voltage changes in subsequent treatment cycles is based on an output level applied to the tissue near the body passageway in an immediately preceding treatment cycle.
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Specification