Ablation catheter
First Claim
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1. A medical device, comprising:
- an elongate body defining a lumen therethrough;
a shaft extending through the lumen; and
an electrode array coupled to an inner surface of the lumen of the elongate body at a first end and coupled to the shaft at a second end, the shaft being slidingly disposed within the lumen alongside at least a portion of the electrode array, wherein linear manipulation of the shaft causes the electrode array to transition from a first geometric configuration to a second configuration, and wherein rotational manipulation of the shaft causes the electrode array to transition from the second geometric configuration to a third configuration.
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Abstract
Devices, systems and methods are disclosed for the mapping of electrical signals and the ablation of tissue. Embodiments include an ablation catheter that has an array of ablation elements attached to a deployable carrier assembly. The carrier assembly can be transformed from a compact, linear configuration to a helical configuration, such as to map and ablate pulmonary vein ostia.
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Citations
20 Claims
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1. A medical device, comprising:
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an elongate body defining a lumen therethrough; a shaft extending through the lumen; and an electrode array coupled to an inner surface of the lumen of the elongate body at a first end and coupled to the shaft at a second end, the shaft being slidingly disposed within the lumen alongside at least a portion of the electrode array, wherein linear manipulation of the shaft causes the electrode array to transition from a first geometric configuration to a second configuration, and wherein rotational manipulation of the shaft causes the electrode array to transition from the second geometric configuration to a third configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An intravascular catheter, comprising:
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a catheter body defining a proximal portion and a distal portion; a shaft extending from the distal portion of the catheter body; a carrier arm coupled to an inner surface of the catheter body, the carrier arm being transitionable from a substantially linear configuration to a substantially helical configuration; a distal tip defining a first lumen and a second lumen, wherein a portion of the shaft is disposed within the first lumen and a portion of the carrier arm is disposed within the second lumen; and an electrode array disposed on the carrier arm. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for ablating a tissue region, comprising:
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positioning a treatment assembly of a medical device proximate a tissue region, the treatment assembly containing an electrode array having a first end coupled to an internal surface of a catheter body, and a second end coupled to a shaft extending from the catheter body and slidingly disposed within the catheter body alongside the first end of the electrode array; manipulating the shaft in a linear direction to controllably transition the electrode array from a first geometric configuration to a second geometric configuration; manipulating the shaft in a rotational direction to controllably transition the electrode array from the second geometric configuration to a third geometric configuration; and delivering ablative energy to the treatment assembly. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification