Sensor release for a blood glucose sensor dispensing instrument

• US 20030031591A1
• Filed: 07/30/2002
• Published: 02/13/2003
• Est. Priority Date: 08/13/2001
• Status: Active Grant

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Micinski, Russell J., Whitson, Robert C.
• Granted Patent: US 7,611,899 B2
• Time in Patent Office: Days
• US Class Current: 422/50
• 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: Y10T 436/11 Automated chemical analysis
• CPC Class Codes: Y10T 436/111666 Utilizing a centrifuge or compartmented rotor

Abstract

A sensor dispensing instrument adapted to handle a sensor pack containing a plurality of sensors and to perform a test using one of the sensors. The sensor dispensing instrument includes an outer housing and a mechanical mechanism contained therein for rotating the sensor pack and ejecting one of the sensors from the sensor pack and through a sensor slot on the housing. The sensor dispensing instrument also includes a sensor actuator to engage with a sensor disposed in the sensor slot, and a sensor release that is movable to disengage the sensor actuator from the sensor disposed in the sensor slot and permit the discharge of the sensor.

Claims

1. A sensor dispensing instrument adapted to handle a sensor pack containing a plurality of sensors, each of said plurality of sensors being disposed in a sensor cavity on said sensor pack and enclosed by a protective foil covering, said sensor dispensing instrument further adapted to perform a test using one of said plurality of sensors, and comprising:

an outer housing having a front end and a rear end, said outer housing further comprising a sensor slot through which one of said sensors is disposed to conduct the test, said sensor slot being disposed at the front end of the outer housing;

a mechanical mechanism generally disposed within the outer housing, said mechanical mechanism including an indexing disk for supporting and rotating said sensor pack, an indexing disk drive arm for rotating said indexing disk, a knife blade assembly for puncturing said foil covering and ejecting one of said sensors from said sensor cavity and through said sensor slot, and a puller handle for moving said indexing disk drive arm and said knife blade assembly;

an electronics assembly generally disposed in the outer housing, said electronic assembly for performing the test and displaying test results;

a sensor actuator generally disposed adjacent to the sensor slot, said sensor actuator adapted to engage with a sensor disposed in said sensor slot, to connect to contacts on the sensor, and to transmit electrical signals between the sensor and said electronics assembly;

a sensor release generally disposed on a surface of the outer housing, said sensor release being movable to disengage said sensor actuator from the sensor disposed in the sensor slot.

2. The sensor dispensing instrument according to claim 1, wherein said puller handle is moveable between a testing position adjacent to the rear end of the outer housing and an extended position spaced outwardly from the rear end of the outer housing, and wherein said puller handle is moved from the testing position to the extended position to rotate said indexing disk, and is moved from the extended position to the testing position to puncture the foil covering and eject one of said sensors from said sensor cavity and through said sensor slot.

3. The sensor dispensing instrument according to claim 2, wherein the puller handle is moveable to a stand-by position, said stand-by position being located between the testing position and the extended position, wherein the sensor release is moved so as to move the puller handle from the testing position to the stand-by position and release the sensor from the sensor slot.

4. The sensor dispensing instrument according to claim 1, wherein the mechanical mechanism further comprises a movable disk drive pusher, said indexing disk drive arm and said knife blade assembly being mounted on said disk drive pusher, and said puller handle being affixed to a rear end of said disk drive pusher.

5. The sensor dispensing instrument according to claim 4, wherein the sensor actuator is engaged by a front end of said disk drive pusher to cause the sensor actuator to engage the sensor disposed in the sensor slot, and further wherein the sensor release engages the front end of the disk drive pusher to cause the sensor actuator to disengage from the sensor disposed in the sensor slot.

6. The sensor dispensing instrument according to claim 5, wherein the sensor release is moveable in a direction perpendicular to the movement of the disk drive pusher, and said sensor release comprises a sloped surface configure to engage the front end of the disk drive pusher at an angle so that the movement of the sensor release causes the disk drive pusher to move.

7. The sensor dispensing instrument according to claim 1, wherein the sensor release comprises a button that projects outwardly from the surface of the outer housing, said button being depressed to disengage the sensor actuator from the sensor disposed in the sensor slot.

8. The sensor dispensing instrument according to claim 1, wherein said electronics assembly comprises a printed circuit board electrically connected to said sensor actuator, electrical components mounted on the printed circuit board for conducting electronic functions in response to electrical signals, at least one button mounted on the printed circuit board for supplying electrical signals to the electrical components, and a liquid crystal display mounted on the printed circuit board for displaying said test results.

9. The sensor dispensing instrument according to claim 8, wherein the electronics assembly further comprises a communication interface mounted on the printed circuit board for connecting the sensor dispensing instrument to a separate electronic device.

10. The sensor dispensing instrument according to claim 8, wherein the electronics assembly further comprises battery terminals mounted on the printed circuit board for connecting to a battery, said battery for supplying electrical power to said electrical components.

11. A sensor dispensing instrument adapted to perform a test by using a fluid testing sensor, said fluid testing sensor being supplied by a disposable sensor pack inserted into said sensor dispensing instrument, said sensor pack having a plurality of sensor cavities covered by a protective foil, said fluid testing sensor being enclosed in one said sensor cavities prior to the performance of said test, said sensor dispensing instrument comprising:

an outer housing having a front end and a rear end, said outer housing further comprising an upper case and a lower case, said upper case and said lower case being pivotally connected together near the rear end of the outer housing in a clam-like fashion to permit the outer housing to be opened to permit the insertion of the sensor pack;

a latch disposed near the front end of the outer housing and adapted to connect the upper case to the lower case so as to close said outer housing after the insertion of said sensor pack;

a sensor slot disposed at the front end of the outer housing, said sensor slot being adapted to receive said fluid testing sensor, said fluid testing sensor projecting outwardly through said sensor slot during the performance of said test;

an indexing disk for supporting and rotating said sensor pack, said indexing disk being rotatably mounted within said outer housing and comprising a plurality of curvilinearly extending grooves and a plurality of radially extending grooves, each radially extending groove being disposed between an adjacent pair of curvilinearly extending grooves;

a disk drive pusher generally disposed within said outer housing for rotating the indexing disk and ejecting the fluid testing sensor from said sensor pack, said disk drive pusher being laterally movable and comprising an indexing disk drive arm for rotating said indexing disk, said indexing disk drive arm having a cam button that is adapted to engage one of the curvilinearly extending grooves and the radially extending grooves, said disk drive pusher further comprising a knife blade assembly for ejecting the fluid testing sensor from the sensor pack, said knife blade assembly having a knife blade adapted to puncture said protective foil and engage the fluid testing sensor so as to eject said fluid testing sensor from said sensor cavity and through said sensor slot;

a puller handle generally disposed at the rear end the outer housing for moving said dish drive pusher, said puller handle being affixed to a rear end of the disk drive pusher, said puller handle being moveable between a testing position adjacent to the rear end of the outer housing and an extended position spaced outwardly from the rear end of the outer housing, wherein said puller handle is moved from the testing position to the extended position to rotate said indexing disk, and wherein said puller handle is moved from the extended position to the testing position to puncture the foil covering and eject said fluid testing sensor from said sensor cavity and through said sensor slot;

an electronics assembly for performing the test and displaying test results, said electronics assembly comprising a printed circuit board, electrical components mounted on the printed circuit board for conducting electronic functions in response to electrical signals, a plurality of buttons mounted on the printed circuit board for supplying electrical signals to the electrical components, a liquid crystal display mounted on the printed circuit board for displaying said test results, battery terminals mounted on said printed circuit board for connecting to a battery to supply electrical power to said electronics assembly;

a sensor actuator disposed within said outer housing adjacent to said sensor slot for connecting the fluid testing sensor to the electronics assembly, said sensor actuator adapted to engage and hold said fluid testing sensor in said sensor slot when said puller handle is in the testing position, said sensor actuator having metal contacts adapted to connect to contacts on the fluid testing sensor when said fluid sensor testing sensor is disposed in said sensor slot and when said puller handle is in the testing position so as to transmit electrical signals between said fluid testing sensor and the printed circuit board of said electronics assembly; and

a sensor release generally disposed on a surface of the outer housing, said sensor release being movable to disengage said sensor actuator from the fluid testing sensor disposed in the sensor slot and permit said fluid testing sensor to be discharged from said sensor slot.

12. The sensor dispensing instrument according to claim 11, wherein the puller handle is moveable to a stand-by position, said stand-by position being located between the testing position and the extended position, wherein the metal contacts of said sensor actuator are disconnected from the contacts on said fluid testing sensor when said puller handle is moved from the testing position to the stand-by position, and further wherein said puller handle is moved from said testing position to said stand-by position by the movement of the sensor release.

13. The sensor dispensing instrument according to claim 11, wherein the sensor actuator is engaged by a front end of said disk drive pusher to cause the sensor actuator to engage the fluid testing sensor disposed in the sensor slot, and further wherein the sensor release engages the front end of the disk drive pusher to cause the sensor actuator to disengage from the fluid testing sensor disposed in the sensor slot.

14. The sensor dispensing instrument according to claim 13, wherein the sensor release is moveable in a direction perpendicular to the movement of the disk drive pusher, and said sensor release comprises a sloped surface configure to engage the front end of the disk drive pusher at an angle so that the movement of the sensor release causes the disk drive pusher to move.

15. The sensor dispensing instrument according to claim 11, wherein the sensor release comprises a button that projects outwardly from the surface of the outer housing, said button being depressed to disengage the sensor actuator from the fluid testing sensor disposed in the sensor slot.

16. A method of operating a sensor dispensing instrument adapted to handle a sensor pack containing a plurality of sensors, each of said plurality of sensors being disposed in a sensor cavity on said sensor pack and enclosed by a protective foil covering, and said sensor dispensing instrument further adapted to perform a test using one of said plurality of sensors, said sensor dispensing instrument comprising an outer housing having a sensor slot disposed at a front end of the outer housing through which one of said sensors is disposed to conduct the test, said sensor dispensing instrument further comprising a mechanical mechanism having an indexing disk for supporting and rotating said sensor pack, a movable disk drive pusher, an indexing disk drive arm mounted on the disk drive pusher for rotating said indexing disk, a knife blade assembly mounted on the disk drive pusher for puncturing said foil covering and ejecting one of said sensors from said sensor cavity and through said sensor slot, and a puller handle affixed to an end of the disk drive pusher for moving said disk drive pusher, said puller handle being moveable between a testing position adjacent to a rear end of the outer housing, an extended position spaced outwardly from the rear end of the outer housing, and a stand-by position located between the testing position and the extended position, and said sensor dispensing instrument further comprising a sensor release for engaging said disk drive pusher when said puller handle is in the testing position, wherein said method comprises the steps of:

a) grasping said puller handle between a finger and a thumb of a user hand when said puller handle is in the stand-by position;

b) pulling said puller handle from the stand-by position to the extended position so as to move said disk drive pusher and cause said indexing disk drive arm to rotate said indexing disk;

c) pushing said puller handle from the extended position to the testing position so as to move said disk drive pusher and cause said knife blade assembly to puncture the foil covering and eject one of said sensors from said sensor cavity and through said sensor slot;

d) performing the test by using the sensor disposed in said sensor slot;

e) viewing test results generated by the test on a liquid crystal display disposed on the outer housing; and

f) activating said sensor release to engage said disk drive pusher and move the puller handle from the testing position to the stand-by position so as to cause the sensor to be released from the sensor slot.

17. The method of operating a sensor dispensing instrument according to claim 16, wherein the sensor dispensing instrument further comprises a sensor actuator generally disposed adjacent to the sensor slot and adapted to engage with a sensor disposed in said sensor slot when said puller handle is in the testing position, and step c) includes engaging said sensor actuator with the sensor disposed in said sensor slot, and step f) includes disengaging said sensor actuator from said senor disposed in said sensor slot.

18. The method of operating a sensor dispensing instrument according to claim 16, wherein the sensor release comprises a button, and the step of activating the sensor release in step f) comprises depressing said button.