| 摘要 |
<p>An ultrasonic device (10) having a wire sheath (14) for use in removing plaque from a human artery. This ultrasonic device has a wire (12) for removing the plaque, a sheath (14) around the wire for minimizing transverse displacement during cavitation, a handpiece (22) having a portion joined to the wire at one end, and a transducer (28) in the handpiece for vibrating the wire axially. It may also have a pipe fitting (42) having an opening for a syringe for fluid under pressure for a passageway between the wire and sheath.</p> |
