Non-invasive near-infrared quantitative measurement instrument
First Claim
1. A near-infrared quantitative analysis instrument for non-invasive measurement of a blood analyte present in a body part of a subject, said analysis instrument comprising:
- (a) introducing means including a near-infrared energy source for introducing near-infrared energy into blood present in a body part of a subject;
(b) detecting means for detecting near-infrared energy emerging from the body part;
(c) a housing means for housing at least said introducing means and said detecting means, said housing means comprising a chamber means for enabling said body part of said subject to be exposed to said near-infrared energy, said introducing means and said detecting means being positioned about said chamber means such that near-infrared energy emitted by said introducing means is receivable by said detecting means;
(d) an insert means for receiving said body part of said subject and for engaging said chamber means, said insert means comprising window means for permitting said near-infrared energy emitted from said introducing means to pass through said insert means and to be receivable by said detecting means; and
(e) processing means for calculating an electrical signal from said detection means into a signal indicative of the quantity of said blood analyte present in the blood of the subject.
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Abstract
An improved near-infrared quantitative analysis instrument is disclosed comprising a removable finger insert which facilitates properly aligning and fitting and individual user'"'"'s finger into the optical system of the analysis instrument. The finger insert according to the present invention also prevents the analysis instrument'"'"'s optical system from being damaged by foreign matter typically introduced by a user'"'"'s finger. The finger insert can also be provided with filters which will enable the insert to be used to as an optical standard for the analysis instrument.
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Citations
24 Claims
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1. A near-infrared quantitative analysis instrument for non-invasive measurement of a blood analyte present in a body part of a subject, said analysis instrument comprising:
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(a) introducing means including a near-infrared energy source for introducing near-infrared energy into blood present in a body part of a subject; (b) detecting means for detecting near-infrared energy emerging from the body part; (c) a housing means for housing at least said introducing means and said detecting means, said housing means comprising a chamber means for enabling said body part of said subject to be exposed to said near-infrared energy, said introducing means and said detecting means being positioned about said chamber means such that near-infrared energy emitted by said introducing means is receivable by said detecting means; (d) an insert means for receiving said body part of said subject and for engaging said chamber means, said insert means comprising window means for permitting said near-infrared energy emitted from said introducing means to pass through said insert means and to be receivable by said detecting means; and (e) processing means for calculating an electrical signal from said detection means into a signal indicative of the quantity of said blood analyte present in the blood of the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification