CARTRIDGE WITH A WHEEL FOR SEALING THE OPENING

• US 20090230144A1
• Filed: 05/20/2009
• Published: 09/17/2009
• Est. Priority Date: 03/22/2005
• Status: Active Grant

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Ruan, Tieming, Kuriger, Rex J.
• Granted Patent: US 8,998,032 B2
• Time in Patent Office: Days
• US Class Current: 221/277
• CPC Class Codes: G01N 33/48757 Test elements dispensed from a stack

Abstract

A dispensing mechanism is adapted to eject a test sensor from a cartridge opening formed in a cartridge containing test sensors. The dispensing mechanism comprises a gear rack, a gear, and a wheel. The gear rack includes a first portion and a second portion located generally parallel to one another. The second portion of the gear rack includes a first plurality of teeth. The gear includes a second plurality of teeth that are adapted to be engaged by the first plurality of teeth upon movement of the gear rack. The wheel is operatively engaged by the gear and is adapted to dispense the test sensor from the cartridge opening and to seal the cartridge opening. The movement of the gear rack in a first direction causes the gear to rotate causing the wheel to rotate. The rotation of the wheel dispenses the test sensor through the cartridge opening.

Claims

1. A cartridge comprising:

a plurality of walls forming at least one cavity therein, the cavity being adapted to contain a plurality of test sensors, the plurality of test sensors being adapted to assist in the determination of a concentration of an analyte in a fluid sample, at least one of the plurality of walls forming an opening adapted to allow a test sensor to be dispensed therefrom; and

a dispensing mechanism adapted to dispense a test sensor through the opening, the dispensing mechanism including a wheel, the wheel sealing the opening in a first position, the wheel being adapted to rotate from the first position to a second position to unseal the opening, the wheel being adapted to rotate from the second position to the first position to seal the opening, an axis of symmetry of the wheel being modified when the wheel is moved between the first position and the second position to assist in unsealing the opening and dispensing the test sensor.

2. The cartridge of claim 1 further including a retention plate and a spring mechanism, the retention plate being located in the at least one cavity, the retention plate being adapted to engage at least one of the plurality of test sensors, the spring mechanism adapted to engage the retention plate, the spring mechanism exerting a force on the retention plate in the direction of the wheel,

wherein the spring mechanism and the retention plate force at least one of the test sensors into contact with a portion of the wheel of the dispensing mechanism.

3. The cartridge of claim 2 wherein the spring mechanism includes a plurality of springs extending between one of the plurality of walls and the retention plate.

4. The cartridge of claim 2 wherein the spring mechanism includes a torsion spring located between one of the plurality of walls and the retention plate.

5. The cartridge of claim 1 wherein the wheel is operatively engaged by a gear.

6. The cartridge of claim 1 wherein the at least one cavity is two cavities separated by a divide, the two cavities being in communication with each other, the first cavity containing the plurality of test strips and the second cavity containing a desiccant.

7. The cartridge of claim 1 wherein the walls of the cartridge form only one opening therein.

8. The cartridge of claim 1 wherein the wheel has an outer surface and the wheel is adapted to dispense the test sensor by having the outer surface thereof contact one of the test sensors and assist in moving the test sensor in a generally horizontal direction toward the opening for dispensing.

9. The cartridge of claim 1 wherein the wheel comprises rubber.

10. A cartridge comprising:

a plurality of walls forming at least one cavity therein, the cavity being adapted to contain a plurality of test sensors, the plurality of test sensors being adapted to assist in the determination of a concentration of an analyte in a fluid sample, at least one of the plurality of walls forming an opening adapted to allow a test sensor to be dispensed therefrom; and

a dispensing mechanism adapted to dispense a test sensor through the opening, the dispensing mechanism including a wheel having an outer surface, the wheel sealing the opening in a first position, the wheel being adapted to rotate from the first position to a second position to unseal the opening, the wheel being adapted to rotate from the second position to the first position to seal the opening, the wheel being adapted to dispense one of the plurality of the test sensors by having the outer surface thereof contact the test sensor and assist in moving the test sensor in a generally horizontal direction toward the opening for dispensing.

11. The cartridge of claim 10 further including a retention plate and a spring mechanism, the retention plate being located in the at least one cavity, the retention plate being adapted to engage at least one of the plurality of test sensors, the spring mechanism adapted to engage the retention plate, the spring mechanism exerting a force on the retention plate in the direction of the wheel,

wherein the spring mechanism and the retention plate force at least one of the test sensors into contact with a portion of the wheel of the dispensing mechanism.

12. The cartridge of claim 11 wherein the spring mechanism includes a plurality of springs extending between one of the plurality of walls and the retention plate.

13. The cartridge of claim 11 wherein the spring mechanism includes a torsion spring located between one of the plurality of walls and the retention plate.

14. The cartridge of claim 10 wherein the wheel is operatively engaged by a gear.

15. The cartridge of claim 10 wherein the at least one cavity is two cavities separated by a divide, the two cavities being in communication with each other, the first cavity containing the plurality of test strips and the second cavity containing a desiccant.

16. The cartridge of claim 10 wherein the walls of the cartridge form only one opening therein.

17. A method of dispensing a test sensor, the method comprising the acts of:

providing a cartridge, the cartridge including a plurality of walls forming at least one cavity therein, the cavity containing a plurality of test sensors, the plurality of test sensors being adapted to assist in the determination of a concentration of an analyte in a fluid sample, at least one of the plurality of walls forming an opening adapted to allow a test sensor to be dispensed therefrom;

providing a dispensing mechanism including a wheel,

moving the wheel from a position of sealing the opening, an axis of symmetry of the wheel being modified when the wheel is moved from the position of sealing the opening;

dispensing a test sensor from the container through the opening after the wheel has been moved from the position of sealing the opening.

18. The method of claim 17 wherein dispensing of the test sensor includes the wheel having an outer surface, the outer surface of the wheel contacting the test sensor and assisting in moving the test sensor through the opening.

19. The method of claim 18 wherein the outer surface of the wheel contacts the test sensor and assisting in moving the test sensor through the opening in a generally horizontal direction.

20. The method of claim 17 wherein the cartridge further includes a retention plate and a spring mechanism, the retention plate being located in the at least one cavity, the retention plate being adapted to engage at least one of the plurality of test sensors, the spring mechanism adapted to engage the retention plate, the spring mechanism exerting a force on the retention plate in the direction of the wheel, and wherein the spring mechanism and the retention plate force at least one of the test sensors into contact with a portion of the wheel of the dispensing mechanism.