Patent ID: 8409185

Claim:
A method for treating tissue of a patient, the method comprising; inserting a first needle through a first insertion point and into a first target region of the tissue by manipulating a handle, the handle supporting the first needle via a needle interface; cooling the first target region with the first needle and removing the first needle from the patient; replacing the first needle in the needle interface with a second needle; inserting the second needle through a second insertion point and into a second target region of the tissue by manipulating the handle; and cooling the second target region with the second needle; wherein the first needle is included in a first needle assembly, wherein the second needle is included in a second needle assembly, and wherein insertion of the second needle is performed during simultaneous insertion of a plurality of needles of the second needle assembly into the target tissue; and wherein each of the plurality of needles of the second needle assembly includes a cooling fluid supply lumen and a vaporization cooling lumen, the cooling fluid supply lumens in fluid communication with a cooling fluid supply of the needle interface, wherein the cooling with the second needle is performed while introducing cooling fluid from the supply lumens into vaporization lumens of each needle, and wherein gas from the vaporization lumens flows to a common pressure-regulated exhaust path.