Method and apparatus for non-invasively monitoring plasma glucose levels
First Claim
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1. A method of non-invasively monitoring a constituent in the plasma of a patient, the method comprising:
- non-invasively inducing a localized sweating response;
non-invasively introducing an agent causing the constituent to appear in sweat secretions;
collecting a discrete sample of pharmacologically-induced sweat, containing the constituent, at a skin surface; and
monitoring a characteristic of the constituent in the sample.
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Abstract
A method and apparatus non-invasively monitor plasma constituent levels. A localized, modified sweating response is induced providing a sweat secretion for analysis of the plasma constituents.
417 Citations
53 Claims
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1. A method of non-invasively monitoring a constituent in the plasma of a patient, the method comprising:
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non-invasively inducing a localized sweating response; non-invasively introducing an agent causing the constituent to appear in sweat secretions; collecting a discrete sample of pharmacologically-induced sweat, containing the constituent, at a skin surface; and monitoring a characteristic of the constituent in the sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for non-invasively monitoring plasma glucose levels in a patient, the method comprising:
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non-invasively inducing a localized sweating response, introducing a first pharmacologic agent which blocks glucose reabsorption by the sweat gland, and introducing a second pharmacologic agent non-invasively which provides an energy supply for the secreting sweat gland; collecting a discrete sample of pharmacologically-modified sweat, containing glucose, at the surface of the skin; and determining a plasma glucose level based upon the glucose contained in the sample. - View Dependent Claims (10, 11, 13, 14, 15)
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12. The method of claim wherein the third pharmacologic agent is a cholinergic agent.
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16. A method of non-invasively monitoring a concentration of a constituent in plasma of a patient, the method comprising:
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stimulating sweat secretion in a localized area of the patient'"'"'s body; modifying sweat gland secretion in the localized area so that a concentration of the constituent in sweat secreted in the localized area has a known relationship to the concentration of the constituent in the plasma; and measuring concentration of the constituent in a sample of sweat secreted in the localized area. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An apparatus for non-invasively monitoring a constituent in the plasma of a patient, comprising:
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an inducer for non-invasively inducing a localized sweating response; a modifier for non-invasively modifying the sweating response to make the constituent appear in sweat secretions; a collector for collecting a discrete sample of pharmacologically-induced sweat, containing the constituent, at a skin surface; and a monitor for monitoring a characteristic of the constituent in the sample. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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34. An apparatus for non-invasively monitoring plasma glucose levels in a patient, comprising:
an inducer for non-invasively inducing a localized sweating response, introducing a first pharmacologic agent non-invasively which blocks glucose reabsorption by the sweat gland, and for introducing a second pharmacologic agent non-invasively which provides an energy supply for the secreting sweat gland. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
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43. An apparatus for non-invasively monitoring a concentration of a constituent in plasma of a patient, comprising:
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an stimulator for stimulating sweat secretion in a localized area of patient'"'"'s body; and a modifier for modifying sweat gland secretion in the localized area so that a concentration of the constituent in sweat secreted in the localized area has a known relationship to the concentration of the constituent in the plasma. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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Specification