| 摘要 |
An apparatus for determining a trajectory for insertion of a medical device into a patient includes a first surface and a second surface which are radiolucent and transparent or translucent. The second surface can be spaced from the first surface so that a point on the first surface and a point on the second surface define the trajectory. Alternatively, a surface which is radiolucent and transparent or translucent can be spaced from the patient so that a point on the surface and a point on the patient define the trajectory. A method for determining a trajectory for insertion of a medical device into tissue comprises visualizing the tissue using at least one of x-ray exposures and fluoroscopy, determining the trajectory for insertion of the medical device into the tissue using the apparatus, and inserting the medical device into the tissue along the determined trajectory. |
