APPARATUS AND METHOD FOR SPECTROPHOTOMETRIC MEASUREMENTS OF BLOOD PARAMETERS
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Abstract
An apparatus for measuring the blood parameters in an extracorporeal circuit comprises: a seat (23) suitable for containing a duct (14) for the blood flow of said extracorporeal circuit; emitting means (16) and detecting means (18) of electromagnetic radiation that face the seat (23); a control unit (38) to which said emitting means (16) and detecting means (18) are connected. The apparatus according to the invention is characterised in that the emitting means (16) are suitable for producing electromagnetic radiation at different wavelengths, and the detecting means (18) are suitable for detecting the electromagnetic radiation diffused in the blood at said wavelengths. Moreover, the apparatus is characterised in that the control unit (38) is suitable for calculating values of blood parameters through a correlation between reference values and ratios obtained from values of the light intensity of the radiation detected at at least two different wavelengths.
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Citations
44 Claims
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1-22. -22. (canceled)
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23. Apparatus for measuring the blood parameters in an extracorporeal circuit, comprising:
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a seat (23) suitable for containing a duct (14) for the blood flow of said extracorporeal circuit; electromagnetic radiation emitting means (16); electromagnetic radiation detecting means (18), said means (16, 18) facing the seat (23); and a control unit (38) to which said emitting means (16) and said detecting means (18) are connected; wherein said electromagnetic radiation emitting means (16) are suitable for producing electromagnetic radiation at different wavelengths, said electromagnetic radiation detecting means (18) are suitable for detecting the electromagnetic radiation diffused in the blood at said wavelengths, and in that the control unit (38) is suitable for calculating values of blood parameters through a correlation between reference values and ratios obtained from values of the light intensity of the radiation detected at at least two different wavelengths. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. Method for measuring blood parameters comprising the steps of:
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emitting electromagnetic radiation in the form of a sequence of pulses of at least two different wavelengths; detecting the radiation diffused in the blood by said at least two wavelengths; calculating the values of the blood parameters correlating reference values to the ratio between the intensity of the electromagnetic radiation detected at said at least two different wavelengths. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification