| abstract |
The device has an ultrasound transmission member (24) engaged in a lumen (22) of a catheter (20), the member having a distal head (26) extending partially beyond the distal end of the catheter. The head has a guide wire passage (40) receiving the guidewire (42) and aligned with the lumen (22), with the guidewire being held in spaced relation to the transmission member (24) in the lumen. |