Abstract: Embodiments of the present invention comprise systems and methods for noninvasion measurements of physiological properties of tissues. The system comprises a light emitter, an optical detector, a mechanical sensor and a processor. The light emitter is capable of emitting light of at least two different wavelengths and comprises at least one light source. The processor is capable of evaluating physiological properties of the tissues from measurements of the optical and the mechanical sensor. More precisely, the processor is capable of evaluating physiological properties of venous blood by using data measured by the mechanical sensor and the optical detector. For example, the oxygenation of venous blood can be measured. Furthermore, the systems can optionally comprise a light emitter which emits three wavelengths and/or the light emitter and the optical detector are arranged in reflection geometry and are located at a distance of at most 10 mm from each other.

Abstract: Embodiments of the present invention comprise systems and methods for noninvasion measurements of physiological properties of tissues. The system comprises a light emitter, an optical detector, a mechanical sensor and a processor. The light emitter is capable of emitting light of at least two different wavelengths and comprises at least one light source. The processor is capable of evaluating physiological properties of the tissues from measurements of the optical and the mechanical sensor. More precisely, the processor is capable of evaluating physiological properties of venous blood by using data measured by the mechanical sensor and the optical detector. For example, the oxygenation of venous blood can be measured. Furthermore, the systems can optionally comprise a light emitter which emits three wavelengths and/or the light emitter and the optical detector are arranged in reflection geometry and are located at a distance of at most 10 mm from each other.

Abstract: A device for the non-invasive measurement of a glucose level, body hydration or another characterizing parameter of body tissue comprises at least two coplanar waveguides arranged on a common support. An AC signal is applied to the first ends of the coplanar waveguides, and the signal arriving at the second end is measured. The coplanar waveguides have differing gap widths, such that their electric fields have different reach into the body tissue. This allows obtain depth resolved information about the permittivities of individual tissue layers and to obtain more accurate results.

Abstract: In a method for characterizing skin treatment agent, a device having several sets of electrodes is applied to the skin. The electrode sets have differing electrode distances, such that fields having different reach can be generated. Inverse profiling is used to calculate the dielectric permittivities of individual skin layers, which in turn allows to observe the water transport mechanism in the skin. These transport mechanisms can be used to assess the effect of the agent on the skin. An advantageous device for implementing this method comprises coplanar waveguides for generating the fields.