LOCALIZATION OF BODY LUMEN JUNCTIONS
First Claim
Patent Images
1. A system, comprising:
- a catheter having a proximal end and a distal end, the distal end of the catheter for placement into a body lumen, the catheter comprising a first electrode and a second electrode, each of the first and second electrodes having a proximal end and a distal end, the distal ends of the first and second electrodes located between the proximal and distal ends of the catheter; and
a processor connected to the first and second electrodes of the catheter, the processor capable of collecting conductance data to determine a profile of the body lumen, the conductance data collected at a plurality of locations within the body lumen and determined at each of the plurality of locations when the distal ends of the first and second electrodes are immersed in a fluid within the body lumen.
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Accused Products
Abstract
Devices, systems, and methods for the localization of body lumen junctions and other intraluminal structure are disclosed. Various embodiments permit clinicians to identify the locations of intraluminal structures and medical devices during non-surgical medical techniques, such as cardiac ablation, by determining the intralumen conductance and/or cross-sectional area at a plurality of locations within the body lumen.
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Citations
88 Claims
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1. A system, comprising:
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a catheter having a proximal end and a distal end, the distal end of the catheter for placement into a body lumen, the catheter comprising a first electrode and a second electrode, each of the first and second electrodes having a proximal end and a distal end, the distal ends of the first and second electrodes located between the proximal and distal ends of the catheter; and a processor connected to the first and second electrodes of the catheter, the processor capable of collecting conductance data to determine a profile of the body lumen, the conductance data collected at a plurality of locations within the body lumen and determined at each of the plurality of locations when the distal ends of the first and second electrodes are immersed in a fluid within the body lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A system for ablating a targeted tissue, comprising:
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a catheter having a proximal end and a distal end, the distal end of the catheter for placement into a body lumen, the catheter comprising two excitation electrodes and at least two detection electrodes, each of the two excitation electrodes and at least two detection electrodes having a proximal end and a distal end, the distal ends of the two excitation electrodes and at least two detection electrodes located between the proximal and distal ends of the catheter, and at least one ablation contact positioned at the distal end of the catheter, the at least one ablation contact being configured to remove or destroy a targeted tissue within the body lumen; and a processor connected to the two excitation electrodes and the at least two detection electrodes of the catheter, the processor capable of collecting conductance data to determine a profile of the body lumen, the conductance data collected at a plurality of locations within the body lumen and determined at each of the plurality of locations when the distal ends of the first and second electrodes are immersed in a fluid within the body lumen. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 52)
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46. A system, comprising:
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a catheter having a proximal end and a distal end, the distal end of the catheter for placement into a body lumen, the catheter comprising at least one excitation electrode and at least one detection electrode, each of the excitation and detection electrodes having a proximal end and a distal end, the distal end of each of the excitation and detection electrodes located between the proximal and distal ends of the catheter; and a processor connected to each of the excitation and detection electrodes of the catheter, the processor capable of collecting conductance data at each of a plurality of locations as the catheter is moved through the body lumen and determining a conductance profile of the body lumen using the conductance data. - View Dependent Claims (47, 48, 49, 50, 51, 53, 54, 55, 56, 57)
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58. A system for ablation of a targeted tissue, comprising:
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a catheter having a proximal end and a distal end, the distal end of the catheter for placement into a body lumen, the catheter comprising at least one excitation electrode and at least one detection electrode, each of the at least one excitation electrodes and each of the at least one detection electrodes having a proximal end and a distal end, the distal ends of the at least one excitation electrode and the at least one detection electrode located between the proximal and distal ends of the catheter, and at least one ablation contact positioned at the distal end of the catheter, the at least one ablation contact being configured to remove or destroy a targeted tissue within the body lumen; and a processor connected to the at least one excitation electrode and at least one detection electrode, the processor capable of collecting conductance data to determine a profile of the body lumen, the conductance data collected at a plurality of locations within the body lumen and determined at each of the plurality of locations when the distal ends of the at least one excitation electrode and the at least one detection electrode are immersed in a fluid within the body lumen. - View Dependent Claims (59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A method for localizing a junction or other structure within a body lumen, comprising the steps of:
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providing a system, comprising a catheter having a proximal end and a distal end, the distal end of the catheter for placement into a body lumen, the catheter comprising a first electrode and a second electrode, each of the first and second electrodes having a proximal end and a distal end, the distal ends of the first and second electrodes located between the proximal and distal ends of the catheter; and a processor connected to the first and second electrodes of the catheter, the processor capable of collecting conductance data to determine a profile of the body lumen, the conductance data collected at a plurality of locations within the body lumen and determined at each of the plurality of locations when the distal ends of the first and second electrodes are immersed in a fluid within the body lumen; introducing the catheter into the body lumen; providing constant electrical current flow to the body lumen through the catheter; measuring a first conductance value at a first location in the body lumen; moving the catheter to a second location in the body lumen; measuring a second conductance value at a second location in the body lumen; and determining a profile of the body lumen based on the first conductance value of the first location and the second conductance value of the second location. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82)
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83. A method for ablating a targeted tissue, comprising the steps of:
providing a system, comprising a catheter having a proximal end and a distal end, the distal end of the catheter for placement into a body lumen, the catheter comprising at least one excitation electrode and at least one detection electrode, each of the at least one excitation electrode and the at least one detection electrode having a proximal end and a distal end, the distal ends of the at least one excitation electrode and the at least one detection electrode located between the proximal and distal ends of the catheter, and at least one ablation contact positioned at the distal end of the catheter, the at least one ablation contact being configured to remove or destroy a targeted tissue within the body lumen; and a processor connected to the at least one excitation electrode and the at least one detection electrode of the catheter, the processor capable of collecting conductance data to determine a profile of the body lumen, the conductance data collected at a plurality of locations within the body lumen and determined at each of the plurality of locations when the distal ends of the at least one excitation electrode and the at least one detection electrode are immersed in a fluid within the body lumen; introducing the catheter into the body lumen; providing electrical current flow to the body lumen through the catheter; measuring a first conductance value at a first location in the body lumen; moving the catheter to a second location in the body lumen; measuring a second conductance value at a second location in the body lumen; determining a profile of the body lumen based on the first conductance value of the first location and the second conductance value of the second location; using the profile to locate the catheter in the body lumen in relation to the targeted tissue; and ablating the targeted tissue using the catheter. - View Dependent Claims (84, 85, 86, 87, 88)
Specification