System and method of identifying sources for biological rhythms
First Claim
Patent Images
1. A method of determining regularity associated with a source of a cardiac rhythm disorder, the method comprising:
- processing by a computing device one of a zero order, a first order, and a higher order derivative of a first cardiac signal associated with a first location at a plurality of first time points against one of a zero order, a first order, and a higher order derivative of a second cardiac signal associated with a second location at a plurality of second time points to define a plurality of coordinate pairs of the first cardiac signal against the second cardiac signal;
determining by the computing device an index of regularity that exceeds a threshold, the index of regularity being associated with periodic repeating activity, the index of regularity indicating an approximate congruence of the plurality of coordinate pairs among the first cardiac signal and the second cardiac signal;
iteratively selecting pairs of cardiac signals from the plurality of defined coordinate pairs of cardiac signals;
performing the processing and determining for each pair of the iteratively selected pairs of cardiac signals;
constructing a matrix of indexes of regularity for the iteratively selected pairs of cardiac signals; and
determining one or more sources of the rhythm disorder using the matrix of indexes of regularity.
3 Assignments
0 Petitions
Accused Products
Abstract
In a system and method of determining regularity associated with a rhythm disorder of a heart, a derivative of a first cardiac signal at a plurality of first time points is processed against a derivative of a second cardiac signal at a plurality of second time points to define a plurality of coordinate pairs of the first cardiac signal against the second cardiac signal. Thereafter, an index of regularity that exceeds a threshold is determined. The index of regularity indicates an approximate congruence of the plurality of coordinate pairs among the first cardiac signal and the second cardiac signal.
223 Citations
27 Claims
-
1. A method of determining regularity associated with a source of a cardiac rhythm disorder, the method comprising:
-
processing by a computing device one of a zero order, a first order, and a higher order derivative of a first cardiac signal associated with a first location at a plurality of first time points against one of a zero order, a first order, and a higher order derivative of a second cardiac signal associated with a second location at a plurality of second time points to define a plurality of coordinate pairs of the first cardiac signal against the second cardiac signal; determining by the computing device an index of regularity that exceeds a threshold, the index of regularity being associated with periodic repeating activity, the index of regularity indicating an approximate congruence of the plurality of coordinate pairs among the first cardiac signal and the second cardiac signal; iteratively selecting pairs of cardiac signals from the plurality of defined coordinate pairs of cardiac signals; performing the processing and determining for each pair of the iteratively selected pairs of cardiac signals; constructing a matrix of indexes of regularity for the iteratively selected pairs of cardiac signals; and determining one or more sources of the rhythm disorder using the matrix of indexes of regularity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A system to determine regularity associated with a source of a cardiac rhythm disorder, the system comprising at least one computing device configured to:
-
process one of a zero order, a first order, and a higher order derivative of a first cardiac signal associated with a first location at a plurality of first time points against s-one of a zero order, a first order, and a higher order derivative of a second cardiac signal associated with a second location at a plurality of second time points to define a plurality of coordinate pairs of the first cardiac signal against the second cardiac signal; determine an index of regularity that exceeds a threshold, the index of regularity being associated with periodic repeating activity, the index of regularity indicating an approximate congruence of the plurality of coordinate pairs among the first cardiac signal and the second cardiac signal; iteratively select pairs of cardiac signals from the plurality of defined coordinate pairs of cardiac signals; perform the processing and determining for each pair of the iteratively selected pairs of cardiac signals; construct a matrix of indexes of regularity for the iteratively selected pairs of cardiac signals; and determine one or more sources of the cardiac rhythm disorder using the matrix of indexes of regularity. - View Dependent Claims (23, 24, 25, 26, 27)
-
Specification