초록 ▼

A method and apparatus for treating cardiac arrhythmias with no discrete focus. More particularly, one or more catheters are used to collect local information concerning a patient's heart, the information is analyzed to determine where lines or points of ablation should be made, and then the lines o

A method and apparatus for treating cardiac arrhythmias with no discrete focus. More particularly, one or more catheters are used to collect local information concerning a patient's heart, the information is analyzed to determine where lines or points of ablation should be made, and then the lines or points of ablation are made.

대표청구항 ▼

[ We claim:] [30.] A method of determining lines or points of ablation to treat arrhythmias in the heart of a patient, which comprises the steps of:(a) positioning the distal tip of each of one or more catheters at a site within a chamber of a patient's heart;(b) sensing location and local informati

[ We claim:] [30.] A method of determining lines or points of ablation to treat arrhythmias in the heart of a patient, which comprises the steps of:(a) positioning the distal tip of each of one or more catheters at a site within a chamber of a patient's heart;(b) sensing location and local information at the site;(c) processing sensed information from step (b) to create one or more activation mapping data points;(d) repeating steps (a), (b), and (c) one or more times to create sufficient data points for an activation map;(e) calculating conduction velocity data points from the data received in step (d) to create a conduction velocity map;(f) determining the refractory period at each site;(g) repeating steps (a), (b), and (f) one or more times to create sufficient data points for a refractory period map;(h) multiplying the conduction velocity value of a data point from step (e) by the corresponding refractory period value to calculate the local dimension value;(i) repeating step (h) one or more times to create sufficient data points for a dimension map;(j) analyzing the dimension map from step (i) to determine lines or points of ablation.