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Abstract

An apparatus and method for simultaneously obtaining a sample of biological tissue or liquid and measuring the electrical resistance at at least two different frequencies, or dispersion of resistance, of the biological tissue or liquid for the purpose of diagnosis of the condition of the tissue or liquid. The apparatus of the invention includes a main case, which includes a tube and demountable handle; a hook for obtaining a sample of biological tissue and for serving as a passive electrode in contact with the biological tissue; an aspirating needle for obtaining a sample of biological liquid and for serving as an active electrode in contact with the biological liquid or tissue; a liquid collector, which includes a metal conductor in contact with the biological liquid and piston for obtaining a sample of biological liquid and providing an electrode for resistance measurements; a electrical plug allowing electrical connection between the electrodes and an electroimpedancemeter. The electroimpedancemeter provides for simultaneous measurement of electrical resistance at at least two different frequencies. An apparatus and method for using the apparatus comprising a flexible electrode probe and an electroimpedancemeter are also provided. A method is also provided for comparative diagnosis of the condition of two biological liquids, from a comparison of electrical resistance measurements.

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First Claim