Method for measuring concentration of component contained in bodily fluid and apparatus for measuring concentration of component contained in bodily fluid
First Claim
1. A method for measuring the concentration of a component contained in a bodily fluid comprising the steps of:
- taking a bodily fluid from a living body;
separating a sample to be measured from said bodily fluid taken in said bodily fluid taking step;
measuring the refractive index of said sample separated in said sample separating step; and
calculating the concentration of substance to be measured contained in said sample to be measured or said bodily fluid based on said refractive index measured in said refractive index measuring step, wherein a porous molecular weight selective film for allowing the substance contained in said bodily fluid to selectively permeate therethrough is used in said sample separating step.
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Accused Products
Abstract
A measuring unit is placed at the surface of a living body. The pressure inside of a glass container is reduced by a pressure reducing tank, so that a subcutaneous exuding fluid is taken out at the surface of the living body from under a skin. The subcutaneous exuding fluid is allowed as a sample to be measured to reach a metallic film through porous molecular weight selective films. A light beam emitted from a light source passes through a prism, and then, is reflected on the metallic film, and finally, is received on a linear array sensor. A minimum intensity position on the linear array sensor, generated by surface plasmon resonance is obtained, and then, a resonant angle is detected. The concentration of substance to be measured contained in the sample to be measured is calculated based on the resonant angle and position. Thus, the concentration of a component contained in a bodily fluid can be readily measured for a long time of period in a continuous manner without any special treatment by taking a very small quantity of exuding fluid without any pain.
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Citations
18 Claims
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1. A method for measuring the concentration of a component contained in a bodily fluid comprising the steps of:
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taking a bodily fluid from a living body;
separating a sample to be measured from said bodily fluid taken in said bodily fluid taking step;
measuring the refractive index of said sample separated in said sample separating step; and
calculating the concentration of substance to be measured contained in said sample to be measured or said bodily fluid based on said refractive index measured in said refractive index measuring step, wherein a porous molecular weight selective film for allowing the substance contained in said bodily fluid to selectively permeate therethrough is used in said sample separating step. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for measuring the concentration of a component contained in a bodily fluid comprising:
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a light source unit for measurement including at least a light source;
a porous molecular weight selective film which is brought into close contact with the surface of a living body;
a bodily fluid taking unit for allowing a bodily fluid to be exuded from said surface of the living body, and then, to permeate through said porous molecular weight selective film, thus obtaining a sample to be measured;
an optical element for allowing light emitted from said light source unit for measurement to enter into said sample to be measured on said porous molecular weight selective film, and further, for reflecting said light on said sample to be measured;
a light receiving element for receiving said light reflected on said sample to be measured, emitted from said optical element;
a control unit including a concentration calculator for calculating the concentration of substance to be measured contained in said sample or said bodily fluid in response to a signal output from said light receiving element; and
a display unit for displaying said concentration obtained by said concentration calculator. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification