An analyte monitor includes a sensor, a sensor control unit, and a display unit. The sensor has, for example, a substrate, a recessed channel formed in the substrate, and conductive material disposed in the recessed channel to form a working electrode. The sensor control unit typically has a housing adapted for placement on skin and is adapted to receive a portion of an electrochemical sensor. The sensor control unit also includes two or more conductive contacts disposed on the housing and configured for coupling to two or more contact pads on the sensor. A transmitter is disposed in the housing and coupled to the plurality of conductive contacts for transmitting data obtained using the sensor. The display unit has a receiver for receiving data transmitted by the transmitter of the sensor control unit and a display coupled to the receiver for displaying an indication of a level of an analyte. The analyte monitor may also be part of a drug delivery system to alter the level of the analyte based on the data obtained using the sensor.

Analyte Monitoring Device And Methods Of Use

A measurement module for glucose testing includes a glucose testing measurement module housing, a test strip receptacle formed in the housing, and a connector portion formed in the housing and shaped to permit mechanical removable attachment of the housing to a hand-held computer. Electronics determine the amount of glucose present in a sample of body fluid, when the test strip is positioned in the receptacle and the body fluid is placed on a test strip, and communicate the glucose amount to the hand-held computer via the connector portion.

Blood glucose tracking apparatus and methods

Systems and methods for medical diagnosis or risk assessment for a patient are provided. These systems and methods are designed to be employed at the point of care, such as in emergency rooms and operating rooms, or in any situation in which a rapid and accurate result is desired. The systems and methods process patient data, particularly data from point of care diagnostic tests or assays, including immunoassays, electrocardiograms, X-rays and other such tests, and provide an indication of a medical condition or risk or absence thereof. The systems include an instrument for reading or evaluating the test data and software for converting the data into diagnostic or risk assessment information.

Point of care diagnostic systems

A method for determining the presence of an analyte in a fluid is described along with various components of an apparatus specifically designed to carry out the method. The method involves taking a reflectance reading from one surface of an inert porous matrix impregnated with a reagent that will interact with the analyte to produce a light-absorbing reaction product when the fluid being analyzed is applied to another surface and migrates through the matrix to the surface being read. Reflectance measurements are made at two separate wavelengths in order to eliminate interferences, and a timing circuit is triggered by an initial decrease in reflectance by the wetting of the surface whose reflectance is being measured by the fluid which passes through the inert matrix. The method and apparatus are particularly suitable for the measurement of glucose levels in blood without requiring separation of red blood cells from serum or plasma.

Minimum procedure system for the determination of analytes

The present invention provides an assay device (60) for determining the presence of one or more selected analytes in a sample (72). The device (60) includes a housing (62) having an exterior surface (68) and defining an interior area (70). A sample receptor (66) receives the sample (72). A sample treatment strip (114, 116) reacts the sample (72) with a reagent to yield a physically detectable change which correlates with the amount of selected analyte in the sample (72). A detector (98, 100) responds to the physically detectable change and produces an electrical signal which correlates to the amount of the selected analyte in the sample (72). A processor converts the electrical signal to a digital output. A starter automatically activates the processor and detector upon the application of the sample (72) to the device (60). A display (270) visually displays the digital output external to the housing (62) and is connected to the processor. The present invention also provides a method for determining the presence of one or more selected analytes in a sample (72) within a disposable housing (62), automatically starting a diagnostic device (60) to analyze a sample (72), and displaying quantitative assay results for a plurality of selected analytes in a sample on a diagnostic device (60).

Electronic assay device and method

A method and apparatus (10) for determining the remission of a chemistry (106) which reacts with a medically significant component of a body fluid. The remission of the chemistry (106) changes as it reacts. The method and apparatus (10) include irradiating the chemistry (106) with a radiation source (182), detecting remissions of radiation from the chemistry (106) with a radiation detector (300), providing a radiation pathway (164) between the source (182) and the chemistry (106), providing a remission pathway (164) between the chemistry (106) and the detector (300), and detecting the rate of change of remission of the chemistry (106) with respect to time. The irradiating, detecting and rate detecting steps and apparatus comprise initially irradiating the chemistry (106) at a first time rate and detecting remissions therefrom, comparing remission data from remission readings spaced apart by a first number of intervening remission readings, and determining when the difference between compared readings exceeds a first predetermined limit. The time rate of irradiation of the chemistry is changed once the difference between compared readings exceeds the first limit. Remission data from remission readings spaced apart by a second number of intervening remission readings are then compared. The method and apparatus next determine when the difference between compared readings no longer exceeds a second predetermined limit. The last remission reading is then converted to the concentration of the medically significant component of the body fluid.

Apparatus and method for analyzing a body fluid.

An instrument for analyzing test strips supporting chemistries which react with a medically significant component of a body fluid to indicate the concentration of the component in the body fluid. The instrument includes a pathway along which radiation is guided from a radiation source to a strip when the strip is inserted into the instrument and along which remission is guided from the strip to a radiation detector. A title provided on the instrument provides a first remission when no strip is inserted into the instrument. The tile is separated from the radiation source by the strip when the strip is inserted into the instrument. The first remission and the strip's remission, respectively, indicate the absence and the presence of the strip in the instrument. The strip also has a surface opposite the chemistry supporting surface characterized by a second strip remission different from the first strip remission. The instrument is capable of determining whether the strip has been inserted into the instrument correctly or backward.

Test strip holding and reading mechanism for a meter

A device (10) for accepting a strip (106) supporting a chemistry which reacts with a medically significant component of a body fluid to indicate the concentration of the component in the body fluid. The device (10) comprises a pathway (166) along which radiation is guided from a radiation source (264) to the strip (106) when the strip (106) is inserted into the device (10) and along which remission is guided from the strip (106) to a radiation detector (266) when the strip (106) is inserted into the device (10), and a housing (120) for providing a first remission. The housing (120) receives radiation from the radiation source (264) and produces the first remission which is guided along the pathway (166) to the radiation detector (266) when no strip (106) is in the device (10). The housing (120) is separated from the radiation source (264) by the strip (106) when the strip (106) is inserted into the device (10). The first remission and the strip's (106) remission indicate the absence and the presence, respectively, of the strip (106) in the device (10).

Test strip holding and reading meter

Gerät und verfahren zur untersuchung von körperflüssigkeit

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Apparatus and method for analyzing a body fluid.

Test strip holding and reading mechanism for a meter

Test strip holding and reading meter

Gerät und verfahren zur untersuchung von körperflüssigkeit