Measurement system and method for measuring parameters in a body tissue
First Claim
1. A measurement system for measuring at least one parameter in a body tissue, said system comprising:
- at least one measurement device for measuring an optical volume segment of the body tissue, the at least one measurement device being configured to be applied to the body tissue;
an optical unit configured for emitting at least four light waves having differing wavelengths, at least one wavelength of the emitted at least four light waves being in a range of absorption of the at least one parameter in the body tissue;
at least one light guide located between the optical unit and the at least one measurement device, the at least one light guide being configured for transmission of the at least four light waves with differing wavelengths; and
an analysis unit configured for analyzing measurement wave signals received from a detector of the measurement device,wherein;
the at least four light waves with differing wavelengths emitted by the optical unit are radiated into the optical volume segment of the body tissue via the at least one measurement device;
the measurement wave signals from the optical volume segment of the body tissue, detected by the detector, are transmitted to and received by the analysis unit;
the analysis unit comprises a transformation algorithm, the transformation algorithm processing the measurement wave signals to determine a morphology for a set of the measurement wave signals for at least one parameter indicative of intensity related to absorption wavelength, determining changes of concentration values of the at least one parameter, and transforming the morphology of the set of measurement wave signals into a parameter indicative of a pressure in the body tissue;
the transformation algorithm identifies the pressure in the body tissue through an operation of comparison between a pressure reference course and at least one of the measurement wave signals or a peak of the measurement wave signals of the at least one parameter in the body tissue.
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Accused Products
Abstract
A measurement system and method for measuring at least one parameter in a body tissue comprise at least one measurement device to be applied to the body, an optical unit for emitting light waves, wherein at least one wavelength of the light waves lies in the region of the absorption of a body parameter, at least one light guide between the optical unit and the measurement device in order to transmit light waves, and an evaluation unit for evaluating measurement waves. Light waves emitted by the optical unit can be beamed into an optical measurement volume in the body tissue by means of the measurement device, and measurement waves received by the measurement device from the measurement volume can be transmitted from the body tissue to the evaluation unit. The evaluation unit comprises a transformation algorithm, which transforms pulsatility of a body parameter measured in the measurement volume into a parameter of the pressure in the body tissue, wherein the body parameter is measured by determining the absorption of the light waves.
37 Citations
17 Claims
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1. A measurement system for measuring at least one parameter in a body tissue, said system comprising:
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at least one measurement device for measuring an optical volume segment of the body tissue, the at least one measurement device being configured to be applied to the body tissue; an optical unit configured for emitting at least four light waves having differing wavelengths, at least one wavelength of the emitted at least four light waves being in a range of absorption of the at least one parameter in the body tissue; at least one light guide located between the optical unit and the at least one measurement device, the at least one light guide being configured for transmission of the at least four light waves with differing wavelengths; and an analysis unit configured for analyzing measurement wave signals received from a detector of the measurement device, wherein; the at least four light waves with differing wavelengths emitted by the optical unit are radiated into the optical volume segment of the body tissue via the at least one measurement device; the measurement wave signals from the optical volume segment of the body tissue, detected by the detector, are transmitted to and received by the analysis unit; the analysis unit comprises a transformation algorithm, the transformation algorithm processing the measurement wave signals to determine a morphology for a set of the measurement wave signals for at least one parameter indicative of intensity related to absorption wavelength, determining changes of concentration values of the at least one parameter, and transforming the morphology of the set of measurement wave signals into a parameter indicative of a pressure in the body tissue; the transformation algorithm identifies the pressure in the body tissue through an operation of comparison between a pressure reference course and at least one of the measurement wave signals or a peak of the measurement wave signals of the at least one parameter in the body tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification