Patent ID: 6805128
Filing Date: 2004-10-19
Classification: A61B,A61N

Abstract:
A method of ablating a cardiac tissue from an epicardial location, comprising the steps of:providing an ablating device having a first ultrasound emitting element and a second ultrasound emitting element, each of the first and second ultrasound emitting elements emitting focused ultrasound having a focal length of 2-20 mm; positioning the ablating device against an epicardial surface overlying a cardiac tissue structure to be ablated; activating the first ultrasound emitting element at a first frequency to produce focused ultrasound having the focal length of 2-20 mm, the focused ultrasound ablating a cardiac tissue structure; and activating the second ultrasound emitting element at a second frequency, different from the first frequency, to produce focused ultrasound having the focal length of 2-20 mm to ablate the cardiac tissue structure.