Patent ID: 8641707

Claim:
A device for ablating tissue comprising: at least one fluid lumen extending from a proximal end of the device towards a distal end of the device; at least one ablation cell positioned within a distal region of the device, the at least one ablation cell having an ablation element and a fluid passageway coupled to the at least one fluid lumen; and at least one bimaterial valve positioned along the at least one fluid lumen within the distal region of the device proximate at least one of: (a) the at least one ablation cell; and (b) a tissue adjacent the at least one ablation cell, for control of a fluid to the at least one ablation cell such that a flow rate of the fluid flowing from the at least one fluid lumen to the fluid passageway of the at least one ablation cell increases as a temperature of the at least one ablation cell or the tissue adjacent the at least one ablation cell increases.