CHANNELED TISSUE SAMPLE PROBE METHOD AND APPARATUS
First Claim
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1. A spectroscopic analyzer apparatus for noninvasive analyte property determination from a sample site of a body part, comprising:
- a sample probe having a sample probe tip;
an optic penetrating through said sample probe and terminating at said sample probe tip; and
at least one microfluidic fluid delivery channel defined in said sample probe tip, said channel forming a pathway for dispersion of a coupling fluid when said sample probe tip proximately contacts the body part.
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Abstract
Sampling is controlled in order to enhance analyte concentration estimation derived from noninvasive sampling. More particularly, sampling is controlled using controlled fluid delivery to a region between a tip of a sample probe and a tissue measurement site. The controlled fluid delivery enhances coverage of a skin sample site with the thin layer of fluid. Delivery of contact fluid is controlled in terms of spatial delivery, volume, thickness, distribution, temperature, and/or pressure.
50 Citations
42 Claims
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1. A spectroscopic analyzer apparatus for noninvasive analyte property determination from a sample site of a body part, comprising:
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a sample probe having a sample probe tip; an optic penetrating through said sample probe and terminating at said sample probe tip; and at least one microfluidic fluid delivery channel defined in said sample probe tip, said channel forming a pathway for dispersion of a coupling fluid when said sample probe tip proximately contacts the body part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for delivering a fluid to a sample site, comprising the step of:
delivering fluid from a reservoir to microchannels machined into a sample probe tip of an optical analyzer, wherein said microchannels form passages for fluid to flow through when said sample probe tip proximately contacts the sample site. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
Specification