Patent ID: 6126654
Filing Date: 2000-10-03
Classification: A61B,A61M

Abstract:
A method of forming revascularization channels or stimulation sites in myocardium from an endocardial layer within a left ventricle of a heart comprising:(a) providing a catheter having an outer jacket with a proximal end and a distal end with a deflection device therein coupled to a distal tip thereof, the catheter having an actuating assembly at the proximal end for activation of the deflection device and an inner tube movably mounted within the outer jacket, the inner tube having a proximal end and a distal end attached to the distal tip, the catheter further having a treatment tool slidably mounted within the inner tube and egressible from the distal tip of the jacket and a treatment tool advance mechanism attached to the handle and having an actuator;(b) advancing the catheter through vasculature into the left ventricle;(c) positioning the distal tip of the catheter at the endocardial layer;(d) operating the treatment tool advance mechanism to advance the treatment tool from the distal tip; and(e) operating the treatment tool to form a revascularization channel or stimulation site during advancement.