Devices and Systems for Carotid Body Ablation
First Claim
Patent Images
1. An endovascular ablation catheter comprising a structure at a distal region, the structure comprising:
- two arms configured to couple with a carotid bifurcation;
at least one ablation element on one of the arms positioned on the arm such that when the structure is coupled to a carotid bifurcation the at least one ablation element is placed on a target site for carotid body ablation.
2 Assignments
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Accused Products
Abstract
Methods and endovascular catheters for assessing, and treating patients having sympathetically mediated disease, involving augmented peripheral chemoreflex and heightened sympathetic tone by reducing chemosensor input to the nervous system via transmural carotid body ablation.
163 Citations
139 Claims
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1. An endovascular ablation catheter comprising a structure at a distal region, the structure comprising:
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two arms configured to couple with a carotid bifurcation; at least one ablation element on one of the arms positioned on the arm such that when the structure is coupled to a carotid bifurcation the at least one ablation element is placed on a target site for carotid body ablation.
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2-10. -10. (canceled)
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11. A system configured for endovascular transmural ablation of a carotid body including:
a catheter having two arms to facilitate positioning and apposition of ablation elements on an intercarotid septum.
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12-19. -19. (canceled)
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20. A device for ablating the function of a carotid body comprising:
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an elongate tubular structure configured for endovascular access of a carotid bifurcation having a distal region and a proximal region, a bifurcated structure at the distal region configured to abut the carotid bifurcation, the structure comprising diverging structures and at least one ablation element mounted on one of the diverging structures, and a conveyor of energy to be applied to said ablation element from a source of ablation energy; whereby, the bifurcated structure is configured to apply a contact force between the ablation element and a carotid artery wall.
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21-24. -24. (canceled)
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25. A system for ablating a function of a carotid body in a patient comprising:
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a catheter configured for use in the vicinity of a carotid artery bifurcation comprising a distal region and a proximal region, a structure at the distal region configured for coupling with a carotid septum comprising at least one ablation element, a means for connecting said ablation element to a source of ablation energy; a console comprising source of ablation energy and a means for controlling said energy, a user interface configured to provide the user with a selection of ablation parameters and to provide the user with indications of the status of the console and the status of ablation activity, and a means to activate and deactivate an ablation; whereby, the catheter provides the means for user placement of said ablation element into an optimal position within a carotid artery for ablation, and the console provides the means for user selection of optimal ablation parameters.
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26. An endovascular ablation catheter comprising:
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a fixation structure configured to engage with a carotid bifurcation; an arm configured to extend into a carotid artery when the fixation structure engages with the carotid bifurcation; and at least one ablation element arranged on the arm such that it is spaced apart a fixed distance from a carotid bifurcation saddle when the fixation structure engages with the carotid bifurcation.
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27-33. -33. (canceled)
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34. An endovascular carotid septum ablation catheter comprising:
first and second diverging arms, the first arm comprising an ablation element and configured so that the ablation element is in contact with a carotid septal wall in one of an external carotid artery and an internal carotid artery when the catheter is coupled with a common carotid artery bifurcation, the second arm configured to be disposed in the other of the internal carotid artery and external carotid artery when the catheter is coupled with the bifurcation. - View Dependent Claims (38, 39, 45, 47, 50, 51, 53, 56)
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35-37. -37. (canceled)
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40-44. -44. (canceled)
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46. (canceled)
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48-49. -49. (canceled)
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52. (canceled)
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54-55. -55. (canceled)
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57-94. -94. (canceled)
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95. An endovascular carotid septum ablation catheter comprising:
first and second diverging arms, the first arm comprising a first ablation element and configured so that the first ablation element is in contact with an external carotid artery wall when the catheter is coupled with a common carotid artery bifurcation, the second arm comprising a second ablation element and configured so that the second ablation element is in contact with an internal carotid artery when the catheter is coupled with the bifurcation, wherein the first and second ablation elements are positioned on the first and second arms so that when the catheter is coupled with the bifurcation, a straight line passing through the first and second ablation elements passes through a carotid septum.
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96. (canceled)
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97. A method of ablating a carotid septum, comprising:
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advancing a first diverging arm of an ablation catheter into an external carotid artery and a second diverging arm of the ablation catheter into an internal carotid artery so that a first ablation element on the first diverging arm is in apposition with a carotid septum wall in the external carotid artery and a second ablation element on the second diverging arm is positioned in the internal carotid artery; and ablating carotid septal tissue by delivering ablation energy between the first and second ablation elements so that the ablation energy passes through a carotid septum.
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98-131. -131. (canceled)
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132. A method of ablating a carotid septum, comprising
advancing a first diverging arm of an ablation catheter into an external carotid artery and a second diverging arm of the ablation catheter into an internal carotid artery so that a first ablation element on the first diverging arm is in apposition with a carotid septum wall in the external carotid artery and a second ablation element on the second diverging arm is in apposition with a carotid septum wall in the internal carotid artery; - and
ablating carotid septal tissue by delivering ablation energy between the first and second ablation elements so that the ablation energy passes through a carotid septum.
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133. A method of endovascularly ablating a carotid septum, comprising
providing an elongate device comprising first and second diverging arms, the first diverging arm comprising a first ablation element and the second bifurcating arm comprising a second ablation element; -
positioning the first ablation element in contact with an external carotid artery so as to create a surface contact area between the first ablation electrode and the external carotid artery that is between about 30% to about 70% of a total surface area of the first ablation element, and positioning the second diverging arm in an internal carotid artery; and ablating carotid septal tissue by delivering ablation energy between the first and second ablation elements through the carotid septum.
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134. (canceled)
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135. A method of endovascularly ablating a carotid septum, comprising
providing an elongate device comprising first and second diverging arms, the first diverging arm comprising a first ablation element and the second bifurcating arm comprising a second ablation element; -
positioning the first ablation element in contact with an external carotid artery so as to create a surface contact area between the first ablation electrode and the external carotid artery that is between about 4.5 mm2 and about 21 mm2; positioning the second diverging arm in an internal carotid artery; and ablating carotid septal tissue by delivering ablation energy between the first and second ablation elements through the carotid septum.
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136-137. -137. (canceled)
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138. A method of endovascularly ablating a carotid body, comprising:
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providing an elongate device comprising first and second diverging arms, the first diverging arm comprising a first electrode and the second diverging arm comprising a second electrode; positioning the first diverging arm in an external carotid artery and the second diverging arm in an internal carotid artery; delivering alternating electric current between the first and second electrodes; forming an ablation zone within a carotid septum that does not extend to the internal or external carotid arteries, wherein the ablation zone includes a location midway along a line passing through the first and second electrodes; and continuing to deliver alternating electric current energy to extend the ablation zone towards the internal and carotid arteries.
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139-141. -141. (canceled)
Specification