Device for mapping electrical activity in the heart
First Claim
1. A device for mapping in vivo electrical activity of a heart, comprising:
- an imaging unit which generates an anatomical reference image comprising an in vivo physical image of a heart disposed in a patient;
a catheter carrying at least one electrode for sensing intracardiac electrical activity, said catheter being adapted for insertion into a heart;
signal processing means for determining activation times, from electrical activity sensed by said at least one electrode, in relation to a reference time for electrical activity at different points in a heart;
means for generating a graphic image showing said activation times at said different points in the heart and for superimposing said graphic image onto said anatomical reference image;
reference means for inserting at least one reference point into said anatomical reference image; and
setting means for aligning said graphic image with said anatomical reference image dependent on said reference point.
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Abstract
A device for mapping electrical activity in a patient'"'"'s heart, has an imaging unit, such as a fluoroscopic imaging unit, for generating a physical in vivo image of a patient'"'"'s heart as an anatomical reference image, an electrode catheter, with at least one electrode for sensing intracardiac electrical activity, for insertion into a patient'"'"'s heart, and signal processing equipment for determining activation times, from sensed electrical activity, in relation to a reference time for electrical activity at different points in the heart, and for generating a graphic image showing the activation times at different points in the heart and superimposing this graphic image onto the anatomical image. An arrangement is further provided for inserting at least one reference point into the anatomical image, and a setting unit moves the graphic image in relation to the reference image with the aid of the reference point.
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Citations
13 Claims
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1. A device for mapping in vivo electrical activity of a heart, comprising:
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an imaging unit which generates an anatomical reference image comprising an in vivo physical image of a heart disposed in a patient; a catheter carrying at least one electrode for sensing intracardiac electrical activity, said catheter being adapted for insertion into a heart; signal processing means for determining activation times, from electrical activity sensed by said at least one electrode, in relation to a reference time for electrical activity at different points in a heart; means for generating a graphic image showing said activation times at said different points in the heart and for superimposing said graphic image onto said anatomical reference image; reference means for inserting at least one reference point into said anatomical reference image; and setting means for aligning said graphic image with said anatomical reference image dependent on said reference point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification