Abstract: A catheter system for repairing an annular organ structure of a patient, comprising: intimately contacting the annular organ structure by a tissue-contactor member having energy-delivering elements; and delivering tissue-shrinkable energy at the annular organ structure through the elements, wherein the tissue-shrinkable energy is applied at a distance wirelessly from the elements sufficient to shrink and tighten the organ structure. Tissue-shrinkable energy is infrared energy, ultrasound energy, focused ultrasound energy, ultrasound energy, radiofrequency energy, microwave energy, electromagnetic energy, laser energy, or a combination thereof.

Abstract: A catheter system and methods for repairing a valvular annulus or an annular organ structure of a patient comprising intimately contacting the annular organ structure by a tissue-contactor member having energy-delivering elements, and delivering tissue-shrinkable energy at the annular organ structure through the elements, wherein the tissue-shrinkable energy is applied at a distance wirelessly from the elements sufficient to shrink and tighten the organ structure.

Abstract: A medical device system comprising a guide catheter and a leaflet fastening applicator, the guide catheter having suitable dimensions for deployment and insertion percutaneously into a human heart in a vicinity of a heart valve, the leaflet fastening applicator having a size allowing insertion through the guide catheter and being capable of holding portions of opposing heart valve leaflets, wherein the fastening applicator comprises a pair of grasping-electrodes adapted for holding and engaging the portions of opposing heart valve leaflets together and for applying energy to fasten the portions, in which heart valve leaflets can be captured and securely fastened, thereby improving coaptation of the leaflets and improving competence of the valve.