Patent ID: 8062289

Claim:
An ablative apparatus comprising: a. A guide wire containing: i. a proximal end; ii. a distal end opposite the proximal end; iii. a cryogenic intake lumen originating at the proximal end of the guide wire and running substantially the length of the guide wire; and iv. a cryogenic exhaust lumen running substantially the length of the guide wire, substantially parallel to the cryogenic intake lumen, and terminating at the proximal end of the guide wire; b. An ablation probe secured to the distal end of the guide wire containing: i. a proximal surface; ii. a distal surface opposite the proximal surface; iii. at least one radial surface extending between the proximal surface and the distal surface; iv. at least one abrasive member on a surface of the ablation probe other than the proximal surface; and v. an internal junction into which the intake lumen and exhaust lumen of the guide wire open; c. A transducer capable of ultrasonically driving the ablation probe in contact with the proximal surface of the ablation probe and encircling the guide wire containing: i. at least one piezo ceramic disc; and ii. electrodes capable of exposing the at least one piezo ceramic disc to an alternating voltage; d. A handle secured at the end of the guide wire opposite the ablation probe; e. Electrical leads running along the guide wire and connected to the electrodes within the transducer; f. A catheter encasing the ablation probe, the transducer, and at least a portion of the guide wire containing: i. a proximal end; ii. a distal end opposite the proximal end; and iii. a pocket at the distal end of the catheter encasing the ablation probe.