referenced elements are as previously described balloon 243 is used to push the catheter against the deposit on the vessel wall the catheter can also function without the balloon fig2 is a transverse sectioned view of atherectomy device 242 it is similar to atherectomy device 216 except that it has a guide wire lumen 244 to accommodate guide wire lumen 244 with the smallest increase in distal cross sectional area guide wire lumen 244 is located off center with respect to nozzle assembly 224 fig2 is a transverse sectioned view of atherectomy device 242 taken proximal to fig2 guide wire lumen 244 has a larger diameter than hypo tubing 222 fig2 is a transverse sectioned view of atherectomy device 242 taken proximal to end member 218 evacuation lumen 234 is by far the largest of the three lumens lumen 240 which accommodates hypo tubing 222 is the smallest lumen fig2 is a longitudinal sectioned view of an atherectomy device 246 employing another embodiment of the present invention where all numerals correspond to those elements previously described in this embodiment high pressure saline transfers through hypo tubing 222 having bends at point 254 and point 256 nozzle assembly 258 has a high pressure jet 260 directed proximally lumen 240 of catheter body 238 couples to lumen 252 which accommodates hypo tubing 222 and is coupled to balloon inflation port 223 which is used to inflate balloon 225 distal tip 250 of end member 248 is smoothly rounded to reduce trauma end member 248 is molded with surface 272 and slope 270 defining evacuation port 264 tip evacuation lumen 266 couples to evacuation lumen 234 of catheter body 238 surface 272 of end member 248 serves as an axial continuation of the outer.