Patent ID: 6629973
Filing Date: 2003-10-07
Classification: A61B

Abstract:
An apparatus for destroying a predetermined defined volume in a tissue, the apparatus comprising:a main unit for transmitting a tissue-destroying medium , the main unit comprising a control unit for controlling the medium transmission, and a transferring apparatus connected to the main unit and adapted to be inserted into the predetermined volume for transferring the transmitted medium to the predetermined volume; measuring apparatus for measuring at least one optical characteristic of the predetermined volume, the at least one measured optical characteristic varying with a size of a destroyed volume of tissue, the measuring apparatus being connected to the control unit for controlling a supply of the tissue-destroying medium based on the at least one measured optical characteristic, the at least one optical characteristic including Doppler frequency, the measuring apparatus being adapted to calculate a concentration of movable blood cells in the predetermined volume based on the Doppler frequency and, based on the Doppler frequency, estimate the size of the destroyed volume.