Dispensing instrument for fluid monitoring sensors

• US 5,575,403 A
• Filed: 01/13/1995
• Issued: 11/19/1996
• Est. Priority Date: 01/13/1995
• Status: Expired due to Term

• Current Assignee: Bayer Corporation (Bayer AG)
• Original Assignee: Bayer Corporation (Bayer AG)
• Inventors: Charlton, Steven C., Slomski, Dennis, Wogoman, Frank W., Schumann, Matthew A., Miller, Anne T., Moulton, Joseph L.
• Primary Examiner(s): NOLAND, KENNETH W
• Application Number:
  US08/372,304
• Time in Patent Office: 676 Days
• Field of Search: 221/30, 221/31, 221/32, 221/26, 221/13, 221/7, 221/2, 221/3, 221/15, 206/828, 206/569, 206/305, 206/486, 206/461, 73/52
• US Class Current: 221/31
• CPC Class Codes: B01L 99/00 Subject matter not provided for in other groups of this subclass
• CPC Class Codes: G01N 2035/00089 Magazines
• CPC Class Codes: G01N 33/4875 Details of handling test elements, e.g. dispensing or storage, not specific to a particular test method test-elements per se B01L, automatic analysers G01N35/00, in-vivo analysis on the human body for medical diagnosis A61B
• CPC Class Codes: Y10S 206/828 Medicinal content

Abstract

A sensor dispensing instrument is adapted to receive a generally circular sensor pack containing a plurality of blood glucose sensors. Each of the sensors are disposed in sensor cavities, each of which is in fluid communication with a corresponding desiccant cavity and has a support wall that assists in directing the sensor as its being ejected from the cavity. The sensor pack is loaded on an indexing disk in the instrument such that when a slide actuator on the instrument is moved toward a testing position, a feed mechanism engaged by the slide actuator moves a knife blade thereon toward one of the sensor cavities. The knife blade pierces a portion of a foil covering the sensor cavity and engages the sensor disposed in the cavity to thereby eject the sensor from the sensor cavity. The continued sliding of the slide actuator toward its testing position results in the sensor being completely ejected from the sensor cavity and disposed in a testing position with a testing end of the sensor projecting from the instrument. Once the blood analyzing test is completed, the slide actuator is moved in the opposite direction towards its standby position. As the slide actuator is moved away from its testing position, the indexing disk with the sensor pack thereon is rotated so that the next one of sensor cavities is positioned so that the sensor therein can be used for the next blood glucose test that is to be performed. The instrument includes circuitry to obtain test data from the sensor pack and to display testing data.

Claims

1. A sensor pack for use in a sensor instrument for handling of a plurality of fluid sensors, said sensor pack comprising:

a base portion having a plurality of sensor cavities, each of which sensor cavities extending toward a peripheral edge of said base portion and accommodating one of said plurality of fluid sensors;

an enclosure means sealed to said base portion to seal said sensor cavities with said sensors disposed therein; and

a support wall in each of said sensor cavities for supporting said sensor thereon, each of said support walls extending in a radial direction from adjacent said peripheral edge of said base portion toward a central portion of said base portion and being sloped toward said enclosure means in a direction toward said peripheral edge of said base portion.

2. A sensor pack as set forth in claim 1 wherein said base portion is generally circular in shape and said enclosure means is a foil that is heat sealed on said base portion about the outer peripheral edge of said base portion and about each of said sensor cavities to seal said sensor cavities with said sensors therein.

3. A sensor pack for use in a sensor instrument for handling of a plurality of fluid sensors, said sensor pack comprising:

a base portion having a plurality of sensor cavities, each of which sensor cavities extending toward a peripheral edge of said base portion and accommodating one of said plurality of fluid sensors;

a desiccant cavity in fluid communication with each of said sensor cavities; and

an enclosure means sealed to said base portion to seal both said sensor cavities with said sensors disposed therein and said desiccant cavities.

4. A sensor pack as set forth in claim 3 including desiccant material in each of said plurality of desiccant cavities so that each of said plurality of sensor cavities is maintained in a desiccate state.

5. A sensor pack as set forth in claim 3 wherein said base portion is generally circular in shape with said sensor cavities extending from adjacent said outer peripheral edge of said base portion to an arc spaced from a center of said base portion and includes a data area about said center of said base portion between said center and said arc.

6. A sensor pack for use in a sensor instrument for handling of a plurality of fluid sensors, said sensor pack comprising:

a generally circular shaped base portion having plurality of sensor Cavities, each of which sensor cavities extending toward a peripheral edge of said base portion and accommodating one of said plurality of fluid sensors;

an enclosure means sealed to said base portion to seal said sensor cavities with said sensors disposed therein, said enclosure means being a foil that is heat sealed on said base portion about the outer peripheral edge of said base portion and about each of said sensor cavities to seal said sensor cavities with said sensors therein; and

a support wall in each of said sensor cavities on which said sensor is disposed, said support wall extending in a radial direction from adjacent the peripheral edge of said base portion toward a center of said base portion and being sloped toward said foil in a direction toward said peripheral edge of said base portion.

7. A sensor pack for use in a sensor instrument for handling of a plurality of fluid sensors, said sensor pack comprising:

a base portion having a plurality of sensor cavities, each of which sensor cavities extending toward an outer peripheral edge of said base portion and accommodating one of said plurality of fluid sensors;

an enclosure means sealed to said base portion to seal said sensor cavities with said sensors disposed therein; and

indexing notches along said outer peripheral edge of said base portion, said notches being positioned on said sensor pack with respect to each of said plurality of sensor cavities in order to properly position said sensor pack in said sensor dispensing instrument.

8. A sensor pack as set forth in claim 7 wherein said notches and said sensor cavities are equally spaced on said sensor pack.