| 摘要 |
<p>A device (1) for the positioning of implantable leads comprises a base unit (3) and at least two, preferably detachable, leads (5, 7). The distal end (27, 35) of each lead (5, 7), which is introduced into the tissue (11) to be treated, has at least two longitudinally spaced apart electrode surfaces (37, 39, 41, 43) for applying current to the tissue. The base unit (3) has computing means (17), current generating means (50) for generating an alternating current, and conductivity determining means 854) for determining the tissue conductivity between pairs of electrode surfaces (37-41) based on the alternating current applied by the current generating means to the tissue. By comparing readings taken between appropriate pairs of electrode surfaces, the relative position of the leads can be determined by triangulation. Methods for using said device and leads for use in said device are also described.</p> |
