Abstract: A method and device for reducing mitral regurgitation. An elongated body is positioned in a coronary sinus of a patient in a vicinity of a heart mitral valve posterior leaflet. The body is adapted to straighten a natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet to move a posterior annulus anteriorly, which in turn moves the posterior leaflet anteriorly, thereby to improve leaflet coaptation.

Abstract: This is a method and an apparatus for the treatment or introduction of contrast fluids into tissue, particularly cardiac tissue. The apparatus includes a catheter having an elongated flexible body and a tissue infusion apparatus including a hollow infusion needle configured to secure the needle into the tissue when the needle is at least partially inserted into the tissue to help prevent inadvertent removal of the needle from the tissue. This permits the selected treatment or contrast fluid to be confined to a specific site. The catheter may also include a visualization assembly including a transducer at the distal end of the body.

Abstract: A device and method for treating an infarct scar on a heart comprising an electric cable with proximal and distal ends; a handle with proximal and distal ends with the proximal end connected to the distal end of the cable; a stem with proximal and distal ends with the proximal end of the stem connected to the distal end of the handle; a heating element with a first surface for contacting infarct scar tissue connected to the distal end of the stem wherein the heating element comprises at least two electrodes and at least one temperature sensor positioned on the first surface for sensing a temperature of infarct scar tissue adjacent to the sensor; an energy source connected to the electrodes via the electric cable; and a regulator connected to the energy source and the temperature sensor of the infarct scar tissue, for controlling the temperature of the infarct scar tissue from about 60 degrees C. to about 99 degrees C.

Abstract: A method and apparatus for reducing mitral regurgitation. The apparatus is inserted into the coronary sinus of a patient in the vicinity of the posterior leaflet of the mitral valve, the apparatus being adapted to straighten the natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet of the mitral valve, whereby to move the posterior annulus anteriorly and thereby improve leaflet coaptation and reduce mitral regurgitation.