Device for measuring human blood sugar levels with a catheter, the free end
of which is positioned in a blood vessel, wherein the catheter consists of at least
one optical waveguide comprising a light source for coupling light into the at
least one optical waveguide, a measurement point at the free end of the catheter
at which point the light is emitted from the at least one optical waveguide, wherein
the light is dispersed by the blood and/or transmitted by the blood and wherein
the dispersed and/or transmitted light is coupled again into the minimum of one
return optical waveguide, a detector to receive the light which is returned, and
a computer unit for analysing the light received by the detector. Provision is
made for a cleansing device to be located at the point of measurement for removing
the tissue particles deposited from the blood in order to provide a device which
is as accurate as possible and which delivers constant measurement values over
time for blood sugar levels which can be used as the basis for further data analysis.
