Dispensing instrument for fluid monitoring sensor

• US 5,810,199 A
• Filed: 09/02/1997
• Issued: 09/22/1998
• Est. Priority Date: 06/10/1996
• Status: Expired due to Term

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• 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:
  US08/927,134
• Time in Patent Office: 385 Days
• Field of Search: 221/31, 221/30, 221/32, 221/26, 221/1, 206/828, 206/305, 206/461, 206/486, 206/569
• US Class Current: 221/31
• 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

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 method of handling a plurality of fluid sensors comprising:

installing a sensor pack in a housing of a sensor dispensing instrument such that one of a plurality of sensor retaining means that is enclosed by enclosure means and accommodates one of said plurality of fluid sensors is in a feed position;

actuating a feed actuator means to advance a feed means with respect to said sensor retaining means in a feed position, said feed means piercing a portion of said enclosure means and engaging said sensor disposed within said sensor retaining means so that said sensor in said sensor retaining means is advanced out of said sensor retaining means into a testing position; and

returning said feed actuator means to a standby position so as to return said feed means to a standby position whereby another one of said plurality of sensor retaining means is moved into said feed position.

2. A method of handling a plurality of fluid sensors as set forth in claim 1 wherein said feed means includes a driver means with a cutting means pivotally mounted on said driver means, said cutting means is advanced along a cam track means as said feed actuator means advances said feed means such that said cutting means is moved relative to said sensor pack to pierce said enclosure means and engage said sensor therein so as to force said sensor through said enclosure means into said testing position.

3. A method of handling a plurality of fluid sensors as set forth in claim 2 wherein said cutting means is lifted by a lift spring means as said feed actuator means returns said feed means to said standby position so that said cutting means is displaced from said sensor pack as said feed means is being returned to said standby position.

4. A method of handling a plurality of fluid sensors as set forth in claim 1 wherein said sensor pack is generally circular in shape and said sensor retaining means extend radially toward an outer circumferential edge of said sensor pack from a point spaced from the center of said sensor pack, said feed actuator means advancing said feed means in a radial direction to advance said sensor from said sensor retaining means beyond said circumferential edge of said sensor pack into said testing position.

5. A method of handling a plurality of fluid sensors as set forth in claim 1 wherein said sensor pack is installed on an indexing means disposed in said housing and said feed means includes indexing drive means to advance said indexing means as said feed means is being returned to said standby position so that another one of said sensor retaining means is moved into said feed position.