Device and method for determining tissue thickness and creating cardiac ablation lesions
First Claim
1. A tissue ablation system, comprising:
- a handle;
an ablation head coupled to the handle, the ablation head having a first jaw and a second jaw;
an ablative element coupled to at least one of the first and second jaws; and
a thickness measurement device coupled to the ablation head, wherein the thickness measurement device indicates a distance separating the first and second jaws.
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Accused Products
Abstract
A tissue ablation device has a handle and an ablation head coupled to the handle. The ablation head has a first jaw, a second jaw, and an ablative element coupled to at least one of the first and second jaws. A thickness measurement device may be coupled to the ablation device to indicate the distance separating the first and second jaws. Further, a force measurement device may be coupled to the ablation device to measure the force being applied by the first and second jaws to a piece of tissue. Further, a strain measurement device may be coupled to the ablation device to indicate the strain resulting in a piece of tissue disposed between the first and second jaws when a stress is applied to the tissue.
620 Citations
29 Claims
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1. A tissue ablation system, comprising:
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a handle;
an ablation head coupled to the handle, the ablation head having a first jaw and a second jaw;
an ablative element coupled to at least one of the first and second jaws; and
a thickness measurement device coupled to the ablation head, wherein the thickness measurement device indicates a distance separating the first and second jaws. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tissue ablation system, comprising:
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a handle;
an ablation head coupled to the handle, the ablation head having a first jaw and a second jaw;
an ablative element coupled to at least one of the first and second jaws; and
a force measurement device, wherein the force measurement device indicates the force being applied by the first and second jaws on a piece of tissue disposed between the first and second jaws. - View Dependent Claims (9, 10, 11, 12)
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13. A tissue ablation system, comprising:
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a handle;
an ablation head coupled to the handle, the ablation head having a first jaw and a second jaw;
an ablative element coupled to at least one of the first and second jaws; and
a strain measurement device coupled to the ablation head, wherein the strain measurement device indicates the strain resulting in a piece of tissue disposed between the first and second jaws when a stress is applied to the tissue. - View Dependent Claims (14, 15)
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16. A method of assessing the transmurality of an ablation lesion in a piece of tissue during the performance of a surgical ablation procedure, comprising:
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applying a stress to the piece of tissue;
calculating a strain in the tissue resulting from the application of the stress; and
determining the degree of transmurality of the ablation lesion based upon the strain and the stress. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method of ablating tissue, comprising:
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providing a bipolar ablation device having a pair of jaws, the jaws having one or more ablation electrodes;
inserting tissue between the jaws;
closing the jaws until the jaws engage the tissue;
measuring a thickness of the tissue by determining the distance between the jaws;
selecting a jaw force;
selecting an electrode energy;
selecting a time of energy application;
applying the selected jaw force to the tissue;
energizing the one or more ablation electrodes to apply the selected electrode energy;
deenergizing the one or more ablation electrodes after the selected time has elapsed; and
opening the jaws to release the tissue. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification