Abstract: Improved electrode tips are provided for cardiac ablation. In accordance with certain preferred embodiments, such tips feature a plurality of conductive portions separated by nonconductive portions to form a plurality of electrodes in the tips. The materials of the tips are biocompatible and capable of sterilization. The same electrode portions may be addressed by a control device both to assess cardiac electrical signals at known cardiac loci and to deliver ablative radiofrequency energy to the same locations. The tips may be provided with perforations to permit irrigation of the catheters when in use.

Abstract: The present invention relates to devices and methods used in cardiac resynchronization therapy. Novel cardiac leads for the right and left ventricles are disclosed. Also disclosed is a method of stimulating the heart using pulse sequences that excite the heart using a plurality of ventricular leads while reducing energy consumption by delivering pulses to the electrodes in an overlapping multiphasic manner.

Abstract: Methods and apparatuses are provided for treating cardiac conductive disorders that include implantation of a network of material that adaptively corrects the electrical conductivity of heart tissues and restores “normal” conductance. The methods and apparatuses disclosed herein involve the delivery of a material to a subject's heart in order to restore normal conductance in a minimally invasive, tunable, localized, and reversible manner, without artificial electrical stimulation.

Abstract: Described is a method of delivering a pacing pattern to a heart, measuring a response of the heart to the pacing pattern, the measured response including a series of electrograms representing a plurality of heartbeats of the pacing pattern and calculating diagnostic data from the measured response, wherein the diagnostic data includes data in one of a time domain and a frequency domain.