GLUCOSE SENSOR

摘要

The invention relates to a method for determining the glucose value in blood or in interstitial liquids and to a glucose sensor comprising a catheter (50) which has one or more openings (54) in the region of the distal end (52) of the catheter; a first optical waveguide (56) which is arranged in the catheter and which comprises a coupling surface (60) at the distal end (58) of the optical waveguide; a measuring probe (62) which is arranged in the region of the distal end (52) of the catheter (50), is coupled to the coupling surface (60) of the first optical waveguide (56), and has a mirror (66) arranged opposite the coupling surface of the first optical waveguide and a detection chamber (64) between the coupling surface of the first optical waveguide and the mirror; a detection liquid for glucose in the detection chamber (64); and a membrane which encloses at least the detection chamber (64) filled with the detection liquid and which has a separation capacity of maximally 20kDA.