a. An ablation probe 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; and

iv. at least one abrasive member on a surface of the ablation probe other than the proximal surface;

b. A transducer capable of ultrasonically driving the ablation probe in contact with the proximal surface of the ablation probe 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;

c. A guide wire secured at one end to the transducer;

d. A handle secured at the end of the guide wire opposite the transducer;

e. Electrical leads running along the guide wire and connected to electrodes within the transducer;

f. A catheter encasing the ablation probe, transducer, and at least a portion of the guide wire containing:

i. a proximal end;

ii. a distal end opposite the proximal end;

iii. a pocket at the distal end of the catheter encasing the ablation probe;

iv. a cryogenic intake lumen originating at the proximal end of the catheter and running substantially the length of the catheter;

v. a cryogenic exhaust lumen running substantially the length of the catheter, substantially parallel to the cryogenic intake lumen, and terminating at the proximal end of the catheter;

vi. a junction connecting the intake lumen and exhaust lumen at distal ends of the intake and exhaust lumens; and

vii. a partition distal to the junction isolating the intake lumen and exhaust lumen from the pocket encasing the ablation probe.