Device for determining the concentration of at least one substance in living tissue

Abstract

Abstract A device for determining the concentration of at least one substance in living tissue, preferably the glucose concentration, contains a single-lumen subcutaneous needle (2) which can be introduced into the tissue. A pumping and suction facility (7) is used for the supply of a perfusion fluid and for its discharge following interaction with the tissue, in which respect the degree of interaction can be determined by endogenous or exogenous marker variables of the perfusion fluid. An analysis facility (11) with measurement facilities (31, 32) for determining the concentration of the substance to be determined and the marker variables is connected to the lumen (10) of the subcutaneous needle (2). The output of the analysis facility (11) is in turn connected to the pumping and suction facility (7) so that the direction of flow of the perfusion fluid in the lumen (10) of the subcutaneous needle (2) is reversed upon changing from pumping to suction operation. <IMAGE>

Inventors

• 👤 Falko Prof. Dr. Skrabal

Bibliographic Details