Patent ID: 8052680

Claim:
A medical device for ablation of tissue associated with a vessel connected to the human heart comprising: a catheter with a proximal section and a distal section, a first balloon with a proximal end and a distal end, the balloon's proximal end being secured to the catheter in the catheter's distal section; the balloon capable of at least partially restricting the flow of blood within the vessel at a location associated with the vessel, a second balloon located at least partially within the first balloon, with a proximal end and a distal end, the second balloon's proximal end being secured to the catheter at a location distal to the proximal end of the first balloon, an introduction system operating in conjunction with the catheter to introduce a media inside one of the first or second balloons, an ablating element secured to the catheter which, in cooperation with the first or second balloon and the media is configured to provide a circumferential ablation to the tissue associated with the vessel.