Patent ID: 6807446
Filing Date: 2004-10-19
Classification: A61N

Abstract:
A monopole phased array thermotherapy applicator radiating radiofrequency energy for inducing a temperature rise in a target within a body, comprising:a) a plurality of monopole elements each for transmitting electric-field radiation thereby radiating radiofrequency energy; b) a metallic waveguide with an RF reflecting ground plane surface with a plurality of circular holes for mounting the monopole elements, the metallic waveguide forming an aperture for receiving a body to be treated; c) a waveform generator providing a source of electric field coupled to each monopole radiating element through a respective phase and power weighting network; d) at least one electric field probe adapted to be positioned on a skin surface of the body for detecting electric field radiation from the plurality of monopole elements and transmitting feedback signals; and e) a controller circuit coupled to the electric field probe for receiving feedback signals to adjust the phase and power delivered to the plurality of monopole elements so that one or more adaptive nulls are to be formed on the surface of the body and a focus is formed at the target tissue to be treated with thermotherapy.