Health Management Devices and Methods

• US 20100331646A1
• Filed: 06/30/2009
• Published: 12/30/2010
• Est. Priority Date: 06/30/2009
• Status: Abandoned Application

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Hoss, Udo, Cho, Hyun, Stafford, Gary Ashley, Feldman, Benjamin Jay, Taub, Marc Barry
• Application Number:
  US12/495,795
• Publication Number:
  US 20100331646A1
• Time in Patent Office: Days
• US Class Current: 600/347
• CPC Class Codes: A61B 5/14503 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors A61B5/1459, A61B5/1464, A61B5/1473, A61B5/1482, A61B5/14865 take precedence
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/1473 invasive, e.g. introduced into the body by a catheter A61B5/1482 takes precedence
• CPC Class Codes: A61B 5/14865 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
• CPC Class Codes: A61B 5/6849 in combination with a needle set

Abstract

Methods and devices to detect analyte in body fluid are provided. Embodiments include analyte sensors designed so that at least a portion of the sensor is positionable beneath a skin surface during analyte monitoring.

Claims

1. An in vivo glucose monitoring system, comprising:

an in vivo glucose sensor comprising at least a portion that is positionable beneath a skin surface to contact biological fluid for a period of time of glucose monitoring, a working electrode and at least one additional electrode, at least one electrical contact coupled to the electrodes, and a glucose-responsive enzyme; and

an on-body unit comprising a sensor contacting portion to contact the in vivo sensor when at least a portion of the sensor is positioned beneath skin, and comprising a selective depth controller to selectively adjust the depth of the sensor beneath the skin surface without adjusting the distance between the sensor and the on-body unit so that the distance between the sensor and on-body unit is fixed and the sensor extends the same distance from the on-body unit regardless of the selected depth.

2. The system of claim 1, wherein the on-body unit comprises a mounting unit, or a sensor control unit or a sensor control unit mountable in a mounting unit.

3. The system of claim 2, wherein the depth controller comprises an offset.

4. The system of claim 3, wherein the offset comprises one or more spacers.

5. The system of claim 4, wherein the system comprises at least two spacers, and the at least two spacers are the same size.

6. The system of claim 4, wherein the system comprises at least two spacers, and the at least two spacers are different sizes.

7. The system of claim 4, wherein a spacer has a variable dimension.

8. The system of claim 7, wherein the dimension is a thickness.

9. The system of claim 2, wherein the depth controller is integrated with the on-body unit.

10. The system of claim 9, wherein the depth controller is selectively moveable from a first position substantially within or on the on-body unit to a second position in which at least a portion of the depth controller extends from the on-body unit a selective distance.

11. The system of claim 10, wherein the depth controller is retractable to a position within or on the on-body unit.

12. The system of claim 2, wherein the depth controller is separate from the on-body unit.

13. The system of claim 2, wherein the depth controller selectively adjusts the angle that the sensor is positioned relative to skin.

14. The system of claim 13, wherein the angle ranges from about 1 to about 90 degrees.

15. The system of claim 2, wherein the depth controller is an adjustable bladder.

16. The system of claim 2, wherein the on-body unit comprises a user-actuatable depth selector coupled to the depth controller.

17. The system of claim 2, wherein the depth selector comprises an indexer that increments the depth ranges through a plurality of discrete positions.

18. The system of claim 2, wherein the on-body unit comprises an inflatable cuff

19. The system of claim 1, wherein the sensor is a planar sensor.

20. The system of claim 1, wherein the sensor is a wire-type sensor.

21. A method, comprising:

selecting an in vivo sensor insertion depth relative to skin from a plurality of selectable depths to insert at least a portion of the sensor under a skin surface to the selected depth;

adjusting a selective depth controller to correspond to the selected in vivo sensor insertion depth; and

inserting the sensor to the selected depth with the depth controller,

wherein the distance between the sensor and an on-body unit is the same regardless of the depth to which the sensor is inserted.

22. The method of claim 21, wherein the on-body unit comprises a mounting unit, or a sensor control unit or a sensor control unit mounted in a mounting unit.

23. The method of claim 22, wherein adjusting the selective depth controller comprises modulating the distance between the skin surface and the mounting unit to correspondingly adjust the depth.

24. The method of claim 21, comprising contacting one or more conductive contacts of the sensor with one or more conductive contacts of the on-body unit.

25. The method of claim 24, wherein the one or more conductive contacts of the on-body unit are in or on a mounting unit.

26. The method of claim 24, wherein the one or more conductive contacts of the on-body unit are in or on a sensor control unit.

27. The method of claim 24, wherein the depth controller comprises one or more offsets.

28. The method of claim 24, wherein the depth controller is integrated with the on-body unit.

29. The method of claim 28, wherein the depth controller is selectively moveable from a first position substantially within or on the on-body unit to a second position in which at least a portion of the depth controller extends from the on-body unit a selective distance.

30. The method of claim 24, wherein the depth controller is separate from the on-body unit.

31. The method of claim 24, including selecting an angle that the sensor is positioned relative to skin from a plurality of angles depending on a desired sensor depth, and inserting the sensor at the selected angle to position the sensor at the desired sensor depth.

32. The method of claim 24, wherein the on-body unit comprises an inflatable cuff.