EP-4736749-A2 - SYSTEMS, DEVICES, AND METHODS FOR ENERGY EFFICIENT ELECTRICAL DEVICE ACTIVATION

EP4736749A2EP 4736749 A2EP4736749 A2EP 4736749A2EP-4736749-A2

Abstract

Systems, devices, and methods are provided for changing the power state of a sensor control device in an in vivo analyte monitoring system in various manners, such as through the use of external stimuli (light, magnetics) and RF transmissions.

Inventors

COLE, JEAN-PIERRE

Assignees

Abbott Diabetes Care Inc.

Dates

Publication Date: 20260506
Application Date: 20140429

Claims (15)

An apparatus for the continuous glucose monitoring of a user, comprising: a sensor control device operable with an in vivo glucose sensor, a portion of which is insertable into the body of a user, the sensor control device comprising: analyte monitoring circuitry adapted to process data received from the in vivo glucose sensor; a processor communicatively coupled with the analyte monitoring circuitry; and an activation circuit comprising a magnetic activation sensor coupled with the processor, the activation circuit being adapted to, upon the magnetic activation sensor sensing removal of a magnetic field, change a power state of the sensor control device from a low power state to a higher power state; and an applicator, comprising: an end cap configured to be removably attached to the applicator, the end cap including a magnet configured to supply a magnetic field, wherein removal of the end cap from the applicator results in removal of the magnetic field supplied by the magnet in the end cap, which in turn changes the power state of the sensor control device from the low power state to the higher power state.
The apparatus of claim 1, wherein the magnetic activation sensor is a magnetically activatable switch that permits the flow of current therethrough upon removal of the magnetic field.
The apparatus of claim 1 or 2, wherein the magnetic activation sensor comprises a Reed switch.
The apparatus of claim 1 or 2, wherein the magnetic activation sensor comprises a Hall effect sensor.
The apparatus of any preceding claim, wherein the sensor control device is housed within the applicator and the end cap is adapted to cover an opening in the applicator through which the sensor control device is deployable.
The apparatus of any preceding claim, wherein the end cap is configured to be removably attached to the applicator via complementary threads.
The apparatus of any preceding claim, wherein the sensor control device comprises a surface substantially completely covered with adhesive for coupling the sensor control device to the user.
The apparatus of any preceding claim, wherein, after changing to the higher power state, the sensor control device is configured to transmit a communication to a reader device.
The apparatus of claim 8, wherein the communication is transmitted according to a Bluetooth or Bluetooth Low Energy, BTLE, protocol.
The apparatus of claim 8 or 9, wherein the reader device comprises a mobile communication device, optionally wherein the mobile communication device comprises a smartphone.
The apparatus of any of claims 8 to 10, further comprising the reader device.
The apparatus of claim 11, wherein the reader device is configured to generate an indication or message to the user that the sensor control device was successfully activated.
The apparatus of any of claims 8 to 12, wherein, in the higher power state, the sensor control device is configured to transmit the data from the in vivo glucose sensor to the reader device, optionally wherein the data is transmitted according to a Bluetooth or Bluetooth Low Energy, BTLE, protocol.
The apparatus of any preceding claim, further comprising the in vivo glucose sensor.
A method of preparing a sensor control device for continuous glucose monitoring for a user, comprising: removing an end cap from an applicator housing the sensor control device, wherein removing the end cap from the applicator results in removal of a magnetic field supplied by a magnet in the end cap, which is sensed by a magnetic activation sensor of an activation circuit of the sensor control device, and which in turn changes a power state of the sensor control device from a lower power state to a higher power state.

Description

FIELD The subject matter described herein relates generally to changing the state of power consumption of an electrical device in an efficient manner, for example, within an analyte monitoring environment. BACKGROUND The detection and/or monitoring of analyte levels, such as glucose, ketones, lactate, oxygen, hemoglobin A1C, or the like, can be vitally important to the health of an individual having diabetes. Diabetics generally monitor their glucose levels to ensure that they are being maintained within a clinically safe range, and may also use this information to determine if and/or when insulin is needed to reduce glucose levels in their bodies or when additional glucose is needed to raise the level of glucose in their bodies. Growing clinical data demonstrates a strong correlation between the frequency of glucose monitoring and glycemic control. Despite such correlation, many individuals diagnosed with a diabetic condition do not monitor their glucose levels as frequently as they should due to a combination of factors including convenience, testing discretion, pain associated with glucose testing, and cost. For these and other reasons, needs exist for improved analyte monitoring systems, devices, and methods. SUMMARY A number of systems have been developed for the automatic monitoring of the analyte(s), like glucose, in a bodily fluid of a user, such as in the blood, interstitial fluid ("ISF"), dermal fluid, or in other biological fluid. Some of these systems include a sensor that can be at least partially positioned "in vivo" within the user, e.g., transcutaneously, subcutaneously, or dermally, to make contact with the user's bodily fluid and sense the analyte levels contained therein. These systems are thus referred to as in vivo analyte monitoring systems. The sensor is generally part of a sensor control device that resides on (or in) the body of the user and contains the electronics and power source that enable and control the analyte sensing. The sensor control device, and variations thereof, can be referred to as a "sensor control unit," an "on-body electronics" device or unit, an "on-body" device or unit, or a "sensor data communication" device or unit, to name a few. The analyte data sensed with the sensor control device can be communicated to a separate device that can process and/or display that sensed analyte data to the user in any number of forms. This device, and variations thereof, can be referred to as a "reader device" (or simply a "reader"), "handheld electronics" (or a handheld), a "portable data processing" device or unit, a "data receiver," a "receiver" device or unit (or simply a receiver), or a "remote" device or unit, to name a few. The reader device can be a dedicated use device, a smart phone, a tablet, a wearable electronic device such as a smart glass device, or others. In vivo analyte monitoring systems can be broadly classified based on the manner in which data is communicated between the reader device and the sensor control device. One type of in vivo system is a "Continuous Analyte Monitoring" system (or "Continuous Glucose Monitoring" system), where data can be broadcast from the sensor control device to the reader device continuously without prompting, e.g., in an automatic fashion according to a broadcast schedule. Another type of in vivo system is a "Flash Analyte Monitoring" system (or "Flash Glucose Monitoring" system or simply "Flash" system), where data can be transferred from the sensor control device in response to a scan or request for data by the reader device, such as with a Near Field Communication (NFC) or Radio Frequency Identification (RFID) protocol. Provided herein are a number of example embodiments of systems, devices, and methods that allow the state (or mode) of power consumption for a device, such as a sensor control device, to be changed in an energy efficient manner. Changing of the state of power consumption can include, for example, changing from a low power state (e.g., powered off) to a higher power state (e.g., powered on). In some cases, this change of state is referred to as "activation" and is employed, for example, when a sensor control device is first put in use by a wearer. For ease of illustration, many of the embodiments described herein will refer to changing the power state of a sensor control device, although these embodiments are not limited to such. In certain embodiments an activation sensor is provided with the sensor control device and operation of the activation sensor causes activation of the internal electronics. The activation sensor can be an optical activation sensor that produces a response when exposed to ambient optical light or another light source. The exposure to light (or some other trigger such as a magnetic field) and subsequent activation can be accomplished before applying the device to the body of a user, for example, during the unpacking of the applicator assembly. The optical activation sensor can be part