Apparatus and method for assessing transmurality of a tissue ablation
First Claim
1. A method of assessing the transmurality of an ablation lesion formed in targeted biological tissue by an instrument that radiates electrical ablative energy, said method comprising:
- operably positioning a first element relative to a first surface of the targeted tissue for transmitting an electrical signal therein;
operably positioning a second element relative to a second tissue surface of the targeted tissue spaced away from the first element for receiving electrical signal from within the tissue transmitted from the first element;
applying ablative energy to the targeted tissue through the instrument operatively separate from the first and second elements to form the ablation lesion therein;
measuring a tissue characteristic related to at least one of conduction time, conduction velocity, phase angle, and impedance in response to the electrical signal received at the second element; and
evaluating the tissue characteristic measurement to assess the transmurality of the ablation lesion.
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Accused Products
Abstract
An instrument is provided to assess the transmurality of an ablation lesion from a first surface of a targeted biological tissue to an opposed second surface thereof. The instrument includes at least a first electrode operably attached to an ablation instrument adapted to engage a tissue first surface, and at least a second electrode adapted to engage a tissue second surface, the at least second electrode positioned generally opposed to the at least first electrode. Alternatively, the at least second electrode may be adapted to be placed within a chamber of an organ. These electrodes each measure at least one of conduction time, conduction velocity, phase angle, and impedance through at least a portion of the targeted tissue to determine the transmurality of the ablation lesion.
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Citations
6 Claims
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1. A method of assessing the transmurality of an ablation lesion formed in targeted biological tissue by an instrument that radiates electrical ablative energy, said method comprising:
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operably positioning a first element relative to a first surface of the targeted tissue for transmitting an electrical signal therein; operably positioning a second element relative to a second tissue surface of the targeted tissue spaced away from the first element for receiving electrical signal from within the tissue transmitted from the first element; applying ablative energy to the targeted tissue through the instrument operatively separate from the first and second elements to form the ablation lesion therein; measuring a tissue characteristic related to at least one of conduction time, conduction velocity, phase angle, and impedance in response to the electrical signal received at the second element; and evaluating the tissue characteristic measurement to assess the transmurality of the ablation lesion. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification