Interstitial fluid collection and constituent measurement
First Claim
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1. A method for testing a sample of body fluid, said method comprising:
- urging a sampler against a patient'"'"'s skin, said sampler including a penetration member sized to penetrate the patient'"'"'s skin into but not substantially through a dermal layer upon placement of said sampler against said skin;
drawing a sample of said fluid along said penetration member and out of said skin;
testing said sample for desired constituents.
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Abstract
An apparatus and method is disclosed for obtaining and measuring constituents in a sample of body fluid. The apparatus includes a member which is sized to penetrate into at least the dermal layer of skin to collect a sample of body fluid located within the dermal layer.
700 Citations
11 Claims
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1. A method for testing a sample of body fluid, said method comprising:
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urging a sampler against a patient'"'"'s skin, said sampler including a penetration member sized to penetrate the patient'"'"'s skin into but not substantially through a dermal layer upon placement of said sampler against said skin; drawing a sample of said fluid along said penetration member and out of said skin; testing said sample for desired constituents. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for determining a level of a constituent in a body fluid, said method comprising:
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inserting a conduit into the dermal layer of skin but not through the dermal layer; passing a sample of said body fluid located within the dermal layer into said conduit; evaporating the liquid from said conduit so that only the constituent remains on the walls of the conduit; and directing a light source through the constituent retained in said conduit to determine the level of a constituent in the body fluid. - View Dependent Claims (11)
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Specification