Apparatus and method for non-invasive detection of...

Details Apparatus and method for non-invasive detection of... Apparatus and method for non-invasive detection of...

A - Human Necessities

61

B

340/144, 324/47,

A61B 5/02 (2006.01) A61B 5/0265 (2006.01) G01B 7/13 (2006.01) G01F 1/64 (2006.01)

Patent

CA 1109542

ABSTRACT OF THE DISCLOSURE A method and apparatus are disclosed for non- invasively detecting the location of a constriction in a vessel through which a conductive fluid is flowing by exter- nally measuring the streaming potentials generated by the flowing fluid. In an exemplary embodiment, the present in- vention detects the location of atherosclerotic lesions in human arteries through which the blood is being pumped in a pulsatile manner. The lesion creates a turbulent flow in the blood which in turn results in a significantly larger streaming potential being generated. The apparatus comprises two closely spaced apart, passive electrodes, which can be relatively movably mounted on a housing and a voltage detec- ting device, such as an oscilloscope, coupled to the electrodes.

319438

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