Patent ID: 7386336
Filing Date: 2008-06-10
Classification: A61B

Abstract:
1. A system for use in non-invasive optical measurements in a human body, the system comprising: a probe configured as a ring-like device for removable mounting onto a patient's finger so as to enclose and hold a portion of a patient's blood perfused flesh medium between two semi-ring portions, said probe carrying a pressurizing assembly and carrying an optical measuring unit, the measuring unit being configured and operable for performing optical measurement and comprising an illumination assembly for illuminating a measurement location on the finger with incident light beams of at least two different wavelengths and a detection assembly configured and operable for detecting at least two light responses of the medium for said at least two different wavelengths, and generating at least two measured data portions indicative of said light responses; and a control unit configured for operating the pressurizing assembly to apply over-systolic pressure to said measurement location and maintain the application of over-systolic pressure during a certain time period, and for operating the measuring unit to perform said optical measurement during said certain time period, said control unit being preprogrammed for receiving and analyzing said at least two measured data portions, determining time evolutions of the light responses, determining a relation between said time evolutions indicative of at least one parameter of the patient's fleshy medium, and displaying said at least one parameter.