| 摘要 |
The present invention is an alignment system by which a needle or other similar invasive device can be positioned for insertion so as to have a real - time, predetermined trajectory to a targeted tissue region, thereby reducing the need for repetitive needle insertion and withdrawal to move the tip of t he instrument accurately to the target site. The insertion device (20) comprise s a needle (26) having a proximate puncture end (22), an energy source housing (28) located at the distal end (24), and a viewing surface or hub (32) locat ed on the housing (28). |
