| 摘要 |
An apparatus (1) for determining a thermal property of tissue (11) comprises a base unit (3) with one or more sources of energy (13, 15) and at least two, preferably detachable, leads (5, 7). The distal end (27, 31) of each lead (5, 7), which is introduced into the tissue (11) to be treated, has at least two longitudinally spaced temperature measuring means (55, 57, 59, 61) to measure surrounding tissue temperature and at least two longitudinally spaced electrode surfaces (37, 39, 41, 43) for applying current to the tissue. Each distal end is also provided within element (33, 35) which uses energy emitted by the sources of energy (13, 15) to heat up the surrounding tissue. The base unit (3) has computing means (17), current generating means (53) for generating an alternating current, and conductance determining means 854) for determining the tissue conductance between pairs of electrode surfaces (37-41) based on the alternating current applied by the current generating means to the tissue. Methods for using said device and leads for use in said device are also described. |
