Directable laser catheter sonic wave with focusing chamber

An intravascular therapy device, comprising:

• a laser catheter including at least one optical fiber extending through the laser catheter which terminates at a laser output aperture;
• a containment sheath surrounding the laser catheter and configured to contain a contrast mixture, the containment sheath being longitudinally movable respective to the laser catheter to cover or uncover the laser aperture, whereby laser light output at the laser output aperture being effective to induce sonic energy in the contrast mixture when the containment sheath covers the laser aperture;
• and
• a focusing chamber arranged over the containment sheath, the focusing chamber including at least one sonic energy aperture at a side of the focusing chamber, the focusing chamber configured to direct the sonic energy out the at least one sonic energy aperture;
• wherein the focusing chamber is configured to move longitudinally along a length of the laser catheter to longitudinally align the at least one sonic energy aperture with the laser output aperture.

An intravascular therapy method, comprising:

• inserting a catheter assembly comprising a laser catheter surrounded by a containment sheath and further comprising a focusing chamber into a blood vessel to position the focusing chamber at an intravascular treatment site having a calcified occlusion;
• and
• after the inserting, treating the calcified occlusion by concurrently:
• inputting laser light into the laser catheter to emit the laser light at a laser aperture located inside the focusing chamber;
• flowing a contrast mixture into the focusing chamber via the containment sheath whereby the laser light induces sonic energy in the contrast mixture in the containment sheath;
• and
• by the focusing chamber, directing the sonic energy out a sonic energy aperture of the focusing chamber.