Method and device for sampling and analyzing interstitial fluid and whole blood samples
First Claim
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1. A fluid sampling device, the device comprising a test strip, wherein the test strip comprises:
- (a) an upper surface;
(b) a lower surface;
(c) an analysis chamber defined between the upper surface and the lower surface, wherein the analysis chamber comprises a proximal end and a distal end, a first analysis chamber wall, a second analysis chamber wall, a volume, a working electrode and a counter and/or reference electrode;
(d) an opening for admitting a sample comprising an analyte to the analysis chamber;
(e) an opening to the atmosphere on the distal end of the analysis chamber; and
(f) an interface for communication with a meter, wherein the interface comprises conductive leads from the electrodes for obtaining an electrochemical measurement.
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Abstract
The invention disclosed in this application is a method and device for combining the sampling and analyzing of sub-dermal fluid samples, e.g., interstitial fluid or whole blood, in a device suitable for hospital bedside and home use. It is applicable to any analyte that exists in a usefully representative concentration in the fluid, and is especially suited to the monitoring of glucose.
483 Citations
19 Claims
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1. A fluid sampling device, the device comprising a test strip, wherein the test strip comprises:
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(a) an upper surface;
(b) a lower surface;
(c) an analysis chamber defined between the upper surface and the lower surface, wherein the analysis chamber comprises a proximal end and a distal end, a first analysis chamber wall, a second analysis chamber wall, a volume, a working electrode and a counter and/or reference electrode;
(d) an opening for admitting a sample comprising an analyte to the analysis chamber;
(e) an opening to the atmosphere on the distal end of the analysis chamber; and
(f) an interface for communication with a meter, wherein the interface comprises conductive leads from the electrodes for obtaining an electrochemical measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification