Analyte sensor break-in mitigation

Patent metadata

Field	Value
Publication number	US-12336819-B2
Application number	US-201916728945-A
Country	US
Kind code	B2
Filing date	Dec 27, 2019
Priority date	Dec 28, 2018
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

Various examples described herein are directed to systems, apparatuses, and methods for mitigating break-in in an analyte sensor. An example analyte sensor system comprises an analyte sensor applicator comprising a needle; an analyte sensor comprising at least a working electrode and a reference electrode, the analyte sensor positioned at least partially within a lumen of the needle; and a hydrating agent positioned within the lumen of the needle to at least partially hydrate the needle.

First claim

What is claimed is:

1. An analyte sensor system comprising:
an implantable analyte sensor configured to be inserted into a host and continuously monitor at least one analyte;
an adhesive pad configured to be at least partially in contact with a skin surface of the host;
a heating element included in the adhesive pad and positioned to provide heat to the skin surface of the host when the implantable analyte sensor is inserted into the host; and
sensor electronics hardware, wherein the sensor electronics hardware is configured to perform operations comprising:
detecting, by the sensor electronics hardware, that the implantable analyte sensor has been inserted into the host based at least on receiving a signal indicating a change in an electrical property of the implantable analyte sensor;
responsive to receiving the signal indicating the change in the electrical property of the implantable analyte sensor, triggering, by the sensor electronics hardware, power to be provided to the heating element, thereby providing heat to the skin surface of the host upon detection that the implantable analyte sensor has been inserted into the host, wherein the providing of the power to the heating element occurs while the implantable analyte sensor is inserted into the host;
responsive to determining that a relationship between a response signal generated by the implantable analyte sensor and a corresponding concentration of the at least one analyte is non-linear, continuing to provide power to the heating element; and
responsive to determining that the relationship is linear after previously determining that the response signal is non-linear, ceasing to provide power to the heating element.

2. The analyte sensor system of claim 1 ,
wherein the heating element includes an electrically resistive material.

3. The analyte sensor system of claim 1 , wherein the adhesive pad comprises a permeability-enhancing substance.

4. The analyte sensor system of claim 1 , further comprising:
a sensor mounting unit comprising a first contact and a second contact; and
a battery electrically coupled to the implantable analyte sensor at the sensor mounting unit, the battery configured to provide a bias voltage across the first contact and the second contact.

5. The analyte sensor system of claim 1 , wherein the heating element includes electrically resistive wires that are adhered to and/or woven into the adhesive pad.

6. The analyte sensor system of claim 1 , wherein the sensor electronics hardware further comprises contacts, and wherein detecting that the implantable analyte sensor has been inserted into the host includes detecting that the implantable analyte sensor is coupled to the contacts.

7. The analyte sensor system of claim 1 , further comprising:
a second heating element included in the adhesive pad and positioned to provide heat to the skin surface of the host when the implantable analyte sensor is inserted into the host.

8. An analyte sensor system comprising:
an implantable analyte sensor configured to be inserted into a host and continuously monitor at least one analyte;
a sensor mounting unit, the implantable analyte sensor coupled to the sensor mounting unit;
an adhesive pad coupled to the sensor mounting unit to adhere the sensor mounting unit to a skin surface of the host;
a heating element included in the adhesive pad and positioned to provide heat to the skin surface of the host when the implantable analyte sensor is inserted into the host; and
a sensor electronics unit installable to the sensor mounting unit, wherein the sensor electronics unit is configured to:
detect that the implantable analyte sensor has been inserted into the host based at least on receiving a signal indicating a change in an electrical property of a contact of the implantable analyte sensor,
begin, in response to receiving the signal indicating the change in the electrical property of the contact of the implantable analyte sensor, providing power to the heating element to heat the skin surface of the host after being installed to the sensor mounting unit, the providing of the power to the heating element being while the implantable analyte sensor is inserted into the host,
responsive to determining that a relationship between a response signal generated by the implantable analyte sensor and a corresponding concentration of the at least one analyte is non-linear, continuing to provide power to the heating element; and
responsive to determining that the relationship is linear after previously determining that the response signal is non-linear, ceasing to provide power to the heating element.

9. The analyte sensor system of claim 8 , wherein the heating element includes an electrically resistive material.

10. The analyte sensor system of claim 8 , wherein the heating element includes electrically resistive wires that are adhered to and/or woven into the adhesive pad.

11. The analyte sensor system of claim 8 , wherein the sensor electronics unit further comprises contacts, and wherein detecting that the implantable analyte sensor has been inserted into the host includes detecting that the implantable analyte sensor is coupled to the contacts.

12. The analyte sensor system of claim 8 , further comprising:
a second heating element included in the adhesive pad and positioned to provide heat to the skin surface of the host when the implantable analyte sensor is inserted into the host.

13. An analyte sensor system comprising:
an implantable analyte sensor configured to continuously monitor at least one analyte;
a sensor mounting unit, the implantable analyte sensor being coupled to the sensor mounting unit;
an adhesive pad coupled to the sensor mounting unit configured to adhere the sensor mounting unit to a skin surface of a host;
a heating element coupled to the adhesive pad; and
sensor electronics hardware configured to provide power to the heating element;
wherein the sensor electronics hardware is configured to perform operations comprising:
detecting, by the sensor electronics hardware, that the implantable analyte sensor has been inserted into the host based at least on detecting contact between the implantable analyte sensor and the skin surface of the host or proximity of the implantable analyte sensor to the skin surface of the host;
in response to detecting contact between the implantable analyte sensor and the skin surface of the host or proximity of the implantable analyte sensor to the skin surface of the host, providing, by the sensor electronics hardware, power to the heating element, thereby providing heat to the skin surface of the host;
in response to determining that a relationship between a response signal generated by the implantable analyte sensor and a corresponding concentration of the at least one analyte is non-linear, continuing to provide power to the heating element, thereby continuing to provide heat to the skin surface of the host; and
in response to determining that the relationship is linear while the heat is provided to the skin surface of the host and after previously determining that the response signal is non-linear, ceasing to provide power to the heating element.

14. The analyte sensor system of claim 13 , wherein the sensor mounting unit comprises a first contact and a second contact, the analyte sensor system further comprising:
a battery electrically coupled to the implantable analyte sensor at the sensor mounting unit, the battery configured to provide a bias voltage across the first contact and the second contact to the implantable analyte sensor.

15. The analyte sensor system of cla

Assignees

• Dexcom Inc

Inventors

• Lee Ted Tang
• Wang Shanger

Classifications

• A61F2007/0052

  for treatment of skin or hair · CPC title

• A61F2007/0093

  programmed · CPC title

• A61F2007/0071

  using a resistor, e.g. near the spot to be heated · CPC title

• A61B5/6844

  Monitoring or controlling distance between sensor and tissue · CPC title

• A61B5/1473

  invasive, e.g. introduced into the body by a catheter · CPC title