Patent ID: 7184824
Filing Date: 2007-02-27
Classification: A61B

Abstract:
1. A probe for tissue examination by dielectric properties, the probe comprising: an inner conductor, which defines a general diameter section and a proximal end with respect to a tissue for examination; an insulation layer, which substantially surrounds the inner conductor; and an outer conductor, which substantially surrounds the inner conductor and the insulation layer, the probe being configured for applying an electric pulse to the tissue for examination, generating electrical fringe fields in the tissue, in a near field, responsive to the electric pulse, applied thereto, thus producing a reflected electric pulse from the tissue for examination, wherein the inner conductor includes at least one section of a different cross-section from that of the general diameter section, the different cross section leading to sharp edges, wherein concentrated electrical charges at the sharp edges enhance the electrical fringe fields at the proximal end, where interaction with the tissue for examination occurs, and wherein the at least one section of the different cross-section comprises a plurality of sharp, thin, conductive spikes, which enhance the electrical fringe fields at the proximal end, where the interaction with the tissue for examination occurs.