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EP-4740859-A2 - SYSTEMS AND METHOD FOR ACTIVATING ANALYTE SENSOR ELECTRONICS

EP4740859A2EP 4740859 A2EP4740859 A2EP 4740859A2EP-4740859-A2

Abstract

Various analyte sensor systems for controlling activation of analyte sensor electronics circuitry are provided. Related methods for controlling analyte sensor electronics circuitry are also provided. Various analyte sensor systems for monitoring an analyte in a host are also provided. Various circuits for controlling activation of an analyte sensor system are also provided. Analyte sensor systems utilizing a state machine having a plurality of states for collecting a plurality of digital counts and waking a controller responsive to a wake up signal are also provided. Related methods for such analyte sensor systems are also provided. Systems for controlling activation of analyte sensor electronics circuitry utilizing a magnetic sensor are further provided. One or more display device configured to display one or more analyte concentration values are also provided.

Inventors

  • HALAC, Jason
  • Ploof, Michael A.
  • REICHERT, Stephen Alan
  • SIMPSON, PETER C.
  • TEETER, Alexander Leroy
  • GARCIA, RODOLFO
  • PIOTROWIAK, JAROSLAW
  • O'CONNELL, Thomas George
  • DORIA, Arlene G.
  • BOHM, SEBASTIAN
  • CRABTREE, VINCENT PETER
  • DERENZY, David
  • DERVAES, Mark S.
  • KALFAS, Nicholas
  • MCDANIEL, ZEBEDIAH L.
  • MOORE, MICHAEL LEVOZIER
  • NEWHOUSE, TODD ANDREW

Assignees

  • DexCom, Inc.

Dates

Publication Date
20260513
Application Date
20190501

Claims (15)

  1. A system for controlling activation of analyte sensor electronics circuitry (12), the system comprising: an analyte sensor (10); a magnetic sensor (520) configured to trigger a wake signal responsive to a magnet or a magnetized component (545) being moved from the magnetic sensor such that the magnet or magnetized component is no longer in sufficient proximity to the magnetic sensor; analyte sensor electronics circuitry configured to: exit a lower power state and transition into an operational state responsive to the wake signal; and responsive to transitioning into the operational state, receive an indication of one or more analyte concentration values from the analyte sensor; and an applicator (7100) for deploying an analyte sensor system (8) comprising the analyte sensor, the magnetic sensor and the analyte sensor electronics circuitry, wherein the applicator comprises the magnet or magnetized component, wherein the applicator is configured with a safety feature that prevents the applicator from activating unless the applicator is pressed against the skin of a host with sufficient force.
  2. The system of claim 1, wherein the applicator comprises an outer applicator housing (7101) and an inner applicator housing (7102), and wherein the magnet is included in or on the inner applicator housing.
  3. The system of claim 1 or 2, wherein, upon exiting the lower power state, the analyte sensor system is configured to power up a chip associated with a wireless communication protocol.
  4. The system of claim 3, wherein the wireless communication protocol is Bluetooth Low Energy, BLE.
  5. The system of claim 3 or 4, wherein the analyte sensor electronics circuitry comprises a transceiver, and wherein, upon exiting the lower power state, the transceiver is configured to begin advertising by transmitting one or more advertising packets.
  6. The system of claim 5, further comprising a display device that is configured to receive the advertising packets and transmit a request for an analyte concentration value to the transceiver.
  7. The system of claim 6, wherein the analyte sensor system is configured to transmit one or more analyte concentration values to the display device and wherein the display device is configured to display the one or more analyte concentration values.
  8. The system of claim 7, wherein, upon transmitting the one or more analyte concentration values, the analyte sensor system is configured to discontinue transmitting advertising packets and revert to the lower power state.
  9. The system of any of claims 1 to 5, further comprising a display device configured to wirelessly communicate with the analyte sensor electronics circuitry.
  10. The system of claim 9, wherein the display device is configured for alarming displayable sensor information transmitted by the analyte sensor electronics circuitry.
  11. The system of claim 9 or 10, wherein the display device includes a touchscreen display for displaying analyte data received from the analyte sensor system to a user and for receiving inputs from the user.
  12. The system of any of claims 9 to 11, wherein the display device is a mobile phone based on an Android, iOS, or other operation system, and is configured to display a graphical representation of continuous sensor data, wherein the continuous sensor data includes current and/or historic data.
  13. The system of any of claims 9 to 12, further comprising a server system configured to update information stored on the display device by delivering an application to the display device.
  14. The system of any of claims 9 to 13, wherein the display device is configured to provide analyte data received from the analyte sensor system or data derived therefrom to a server system.
  15. The system of any of claims 9 to 14, wherein the display device is configured to provide analyte data received from the analyte sensor system or data derived therefrom to a partner device, wherein the partner device is configured to use the analyte data or derivative data derived therefrom in the administration of insulin.

Description

INCORPORATION BY REFERENCE TO RELATED APPLICATIONS Any and all priority claims identified in the Application Data Sheet, or any correction thereto, are hereby incorporated by reference under 37 CFR 1.57. This application claims the benefit of U.S. Provisional Application No. 62/666,554, filed May 3, 2018. The aforementioned application is incorporated by reference herein in its entirety, and is hereby expressly made a part of this specification. TECHNICAL FIELD The present developments relate generally to medical devices such as analyte sensors, and more particularly, but not by way of limitation, to systems, devices, and methods related to activating analyte sensor electronics on such medical devices. BACKGROUND Diabetes mellitus is a disorder in which the pancreas cannot create sufficient insulin (Type I or insulin dependent) and/or in which insulin is not effective (Type 2 or non-insulin dependent). In the diabetic state, the victim suffers from high blood sugar, which causes an array of physiological derangements (kidney failure, skin ulcers, or bleeding into the vitreous of the eye) associated with the deterioration of small blood vessels. A hypoglycemic reaction (low blood sugar) may be induced by an inadvertent overdose of insulin, or after a normal dose of insulin or glucose-lowering agent accompanied by extraordinary exercise or insufficient food intake. Conventionally, a diabetic person carries a self-monitoring blood glucose (SMBG) monitor, which may require uncomfortable finger pricking methods. Due to the lack of comfort and convenience, a diabetic will normally only measure his or her glucose level two to four times per day. Unfortunately, these time intervals are spread so far apart that the diabetic will likely be alerted to a hyperglycemic or hypoglycemic condition too late, sometimes incurring dangerous side effects as a result. In fact, it is not only unlikely that a diabetic will take a timely SMBG value, but will not know if his blood glucose value is going up (higher) or down (lower), due to limitations of conventional methods. Consequently, a variety of non-invasive, transdermal (e.g., transcutaneous) and/or implantable electrochemical sensors are being developed for continuously detecting and/or quantifying blood glucose values. These devices generally transmit raw or minimally processed data for subsequent analysis at a remote device, which can include a display. The transmission to wireless display devices can be wireless. The remote device can then provide the user with information about the user's blood glucose levels. Because systems using such implantable sensors can provide more up to date information to users, they may reduce the risk of a user failing to regulate the user's blood glucose levels. Nevertheless, such systems typically still rely on the user to take action in order to regulate the user's blood glucose levels, for example, by making an injection. Such systems may typically include a glucose sensor implantable into a host and sensor electronics circuitry for processing and communicating glucose related information. In such systems, however, the sensor and the sensor electronics circuitry are usually designed to be connected for the first time by a user or host after the sensor has been implanted into the user. Consequently, a pre-connected system can potentially reduce the amount of user interaction involved with deploying an analyte sensor system. This Background is provided to introduce a brief context for the Summary and Detailed Description that follow. This Background is not intended to be an aid in determining the scope of the claimed subject matter nor be viewed as limiting the claimed subject matter to implementations that solve any or all of the disadvantages or problems presented above. SUMMARY In view of the above characteristics associated with some systems, there exists a need for an analyte sensor system in which an analyte sensor and analyte sensor electronics circuitry are configured to be electrically and mechanically coupled to each other before the analyte sensor is implanted into the user or host. The present disclosure relates generally to controlling activation of sensor electronics for the wireless communication of analyte data gathered using an analyte sensor system. More particularly, the present disclosure is directed to systems, methods, apparatuses, and devices, for using multiple techniques for controlling such activation in an analyte sensor system in which the analyte sensor is connected both electrically and mechanically to analyte sensor electronics circuitry before the analyte sensor is implanted in the host. There are numerous advantages associated with the systems, methods, devices, and other aspects and embodiments of the present disclosure. For example, an analyte sensor system in which the analyte sensor is configured to be connected to the analyte sensor electronics circuitry before implantation may not need a lot of user in