| 主权项 |
1. An apparatus, comprising:
a transmission member having a proximal end portion and a distal end portion, the transmission member configured to be inserted into a bodily lumen, the transmission member configured to transfer ultrasonic energy from the proximal end portion to the distal end portion, the transmission member defining a lumen along a longitudinal center line of the transmission member, the distal end portion of the transmission member including a concave engagement surface and a distal end surface, the distal end surface defining a plane that intersects the longitudinal center line at angle of between about 75 degrees and about 105 degrees, the engagement surface configured to engage a target tissue within the bodily lumen to limit movement of the target tissue along the longitudinal center line, the engagement surface defining an opening in fluid communication with the lumen. |
