Diagnostic complex for measurement of the condition of biologica

Details Diagnostic complex for measurement of the condition of biologica Diagnostic complex for measurement of the condition of biologica

1997-06-20

1999-11-16

Lateef, Marvin M.

Surgery

Diagnostic testing

Measuring electrical impedance or conductance of body portion

600373, A61B 505

Patent

active

059873531

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.

REFERENCES:
patent: 4184486 (1980-01-01), Papa
patent: 5282840 (1994-02-01), Hudrlik
patent: 5630426 (1997-05-01), Eggers et al.

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