System and method for assessing coupling between an electrode and tissue
First Claim
1. A system for assessing a degree of coupling between an electrode and a tissue in a body, comprising:
- an electronic control unit configured to acquire values for first and second components of a complex impedance between said electrode and said tissue and to calculate a coupling index responsive to said values and a standardization value indicative of a deviation from a reference standard by a parameter associated with at least one of said body, said electrode and another component of said system, said coupling index indicative of a degree of coupling between said electrode and said tissue.
1 Assignment
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Accused Products
Abstract
A system and method for assessing a degree of coupling between an electrode and tissue in a body is provided. Values for first and second components of a complex impedance (e.g., resistance and reactance or impedance magnitude and phase angle) between the electrode and the tissue are obtained. These values are used together with a standardization value indicative of a deviation from a reference standard by a parameter associated with at least one of the body, the electrode and another component of the system to calculate a coupling index that is indicative of a degree of coupling between the electrode and the tissue. The coupling index may be displayed to a clinician in a variety of ways to indicate the degree of coupling to the clinician. The system and method find particular application in ablation of tissue by permitting a clinician to create lesions in the tissue more effectively and safely.
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Citations
21 Claims
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1. A system for assessing a degree of coupling between an electrode and a tissue in a body, comprising:
an electronic control unit configured to acquire values for first and second components of a complex impedance between said electrode and said tissue and to calculate a coupling index responsive to said values and a standardization value indicative of a deviation from a reference standard by a parameter associated with at least one of said body, said electrode and another component of said system, said coupling index indicative of a degree of coupling between said electrode and said tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An article of manufacture, comprising:
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a computer storage medium having a computer program encoded thereon for determining a degree of coupling between an electrode and tissue in a body, said computer program including code for; calculating a coupling index responsive to values for first and second components of a complex impedance between said electrode and said tissue and a standardization value indicative of a deviation from a reference standard by a parameter associated with at least one of said body, said electrode and another component of a system controlling said electrode, said coupling index indicative of a degree of coupling between said electrode and said tissue. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for assessing a degree of coupling between an electrode and a tissue in a body, comprising the steps of:
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providing an electronic control unit configured for acquiring values for first and second components of a complex impedance between said electrode and said tissue; and
,calculating a coupling index responsive to said values and a standardization value indicative of a deviation from a reference standard by a parameter associated with at least one of said body, said electrode and another component of a system controlling said electrode, said coupling index indicative of a degree of coupling between said electrode and said tissue. - View Dependent Claims (19, 20, 21)
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Specification