Medical Device Insertion

• US 20070249922A1
• Filed: 12/28/2006
• Published: 10/25/2007
• Est. Priority Date: 12/28/2005
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Hoss, Udo, Peyser, Thomas, Mazza, John, Stafford, Gary, Morgan, Roy, Naegeli, Andrew, Taub, Marc, Lee, Daniel
• Granted Patent: US 8,545,403 B2
• Time in Patent Office: Days
• US Class Current: 600/365
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• 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

Abstract

Devices and methods for inserting at least a portion of a medical device in a patient are provided. Embodiments include medical device insertions that employ a plurality of insertion stages. Also provided are systems and kits for use in analyte monitoring.

Claims

1. A method of inserting an analyte sensor, comprising:

positioning a first portion of an analyte sensor at a first predetermined depth below a skin surface of a patient; and

positioning the first portion of the analyte sensor at a second predetermined depth, wherein the second predetermined depth is greater than the first predetermined depth.

2. The method of claim 1 wherein positioning the first portion of the sensor at the first predetermined depth includes piercing the skin surface at a first angle relative to the skin surface.

3. The method of claim 2 wherein the first angle includes one of a 90 degrees relative to the skin surface or less than 90 degrees relative to the skin surface.

4. The method of claim 2 wherein positioning first portion of the sensor at the first predetermined depth includes inserting the first portion of the sensor through the skin surface at a first velocity.

5. The method of claim 4 wherein positioning the first portion of the sensor at a second predetermined depth including inserting the first portion of the sensor at a second velocity.

6. The method of claim 5 wherein the first velocity and the second velocity are different.

7. A sensor insertion device, comprising:

a sensor introducer configured to pierce through a skin layer of a patient to reach a first predetermined depth under the skin layer; and

a sensor coupled to the sensor introducer, and configured to reach a second predetermined depth under the skin layer, wherein the second predetermined depth is greater than the first predetermined depth.

8. The device of claim 7, wherein the sensor introducer is configured to pierce through the skin layer at a first velocity, and further, wherein the sensor is configured to reach the second predetermined depth at a second velocity.

9. The device of claim 8 wherein the first velocity is greater than the second velocity.

10. The device of claim 7 wherein the sensor introducer and the sensor are coupled in a nested configuration.

11. The device of claim 7 wherein the sensor is configured to reach the first predetermined depth substantially contemporaneously with the sensor introducer reaching the first predetermined depth.

12. The device of claim 7 wherein the sensor includes a glucose sensor.

13. The device of claim 7 wherein the sensor introducer includes a needle portion.

14. The device of claim 13, wherein needle portion includes a hollow segment, and at least a portion of the sensor is substantially provided within the hollow segment of the needle portion.

15. The device of claim 7 wherein the sensor introducer is substantially entirely removed from the patient before the sensor reaches the second predetermined depth.

16. The device of claim 7 wherein the sensor is in fluid contact with the patient'"'"'s analyte at the second predetermined depth.

17. The device of claim 7 wherein tissue trauma substantially at the second predetermined depth is less than the tissue trauma substantially at the first predetermined depth.

18. A method of analyte sensor insertion, comprising:

piercing a skin layer of a patient to a first predetermined depth; and

inserting an analyte sensor through the pierced skin layer to position the sensor at a second predetermined depth which is greater than the first predetermined depth.

19. The method of claim 18 wherein tissue trauma substantially at the second predetermined depth is less than the tissue trauma substantially at the first predetermined depth.

20. The method of claim 18 wherein the analyte sensor is in fluid contact with the patient'"'"'s analyte to be monitored at the second predetermined depth.