Patent Description:
To further improve energy efficiency, some body-mountable devices utilize low-power modes. Various mechanisms are utilized to wake the body-mountable devices up from a low-power mode, however, these wakeup mechanisms often require additional components that are expensive both in terms of increased production costs and increased footprint or size of the device. Regardless, many of the existing wakeup mechanisms are unreliable, e.g., prone to false wakeups.

A prior art device which implements a two-phase wake-up mechanism is known from <CIT>.

Overall, the examples herein of some prior or related systems and their associated limitations are intended to be illustrative and not exclusive. Upon reading the following, other limitations of existing or prior systems will become apparent to those of skill in the art.

In order to describe the manner in which the above-recited and other advantages and features can be obtained, a more particular description is set forth and will be rendered by reference to specific examples thereof which are illustrated in the appended drawings. Understanding that these drawings depict only typical examples and are not therefore to be considered to be limiting of its scope, implementations will be described and explained with additional specificity and detail through the use of the accompanying drawings.

The drawings have not necessarily been drawn to scale. Similarly, some components and/or operations may be separated into different blocks or combined into a single block for the purposes of discussion of some of the embodiments of the present technology. Moreover, while the technology is amenable to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and are described in detail below. The intention, however, is not to limit the technology to the particular embodiments described. On the contrary, the technology is intended to cover all modifications, equivalents, and alternatives falling within the scope of the technology as defined by the appended claims.

Examples are discussed in detail below. While specific implementations are discussed, it should be understood that this is done for illustration purposes only. A person skilled in the relevant art will recognize that other components and configurations may be used without parting from the scope of the invention which is defined by the claims The implementations may include machine-implemented methods, computing devices, or computer readable medium.

The technology described herein is directed to a two-phase deployment-initiated wakeup mechanism for a body-mountable electronic device. During a first phase of the two-phase wakeup mechanism, a motion sensor detects an acceleration event indicative of deployment of the device onto the body of the user. The acceleration event enables control circuitry thereby transitioning the device from a sleep state to a temporary wakeup verification state. During a second phase of the two-phase mechanism, the control circuitry verifies that the device has been launched onto the body of a user via a deployment applicator in which the device is retained until deployment. Once the control circuitry verifies that the device has been launched onto the body of a user, the control circuitry wakes up the body-mountable electronic device by transitioning the device from the wakeup verification state to a functional (or operational) state. As discussed herein, the term 'body-mountable devices' encompasses implantable medical devices, mountable devices, partially implantable devices, such as continuous glucose monitoring (CGM) devices, and the like, etc..

The wakeup mechanism and techniques discussed herein are implemented using existing components of the body-mountable device, including a motion sensor that is adapted to measure activity of the user during the function (or operational) state. Among other benefits, the wakeup mechanism reduces or eliminates sensor leakage during non-operational time, e.g., transport, storage, etc., and reduces the likelihood of false wakeups while enabling reliable transition from the sleep state to the functional (or operational) state with minimal user interaction.

In some embodiments, the motion sensor comprises an accelerometer that is adapted to detect the high g-force event indicative of deployment of the device onto the body of a user via an applicator. The detection will then wake up a microcontroller (or control circuitry) from an off-state to initiate a second phase of confirmation or verification. During the second phase, the microcontroller attempts to verify that the body-mountable electronic device is deployed by monitoring for and detecting occurrence of a second deployment indicator.

<FIG> depicts a block diagram illustrating an example mountable device deployment system <NUM> including body-mountable electronic device <NUM> with a two-phase deployment-initiated wakeup mechanism, according to some embodiments. The two-phase deployment-initiated wakeup mechanism is adapted to reliably wake up the body-mountable electronic device <NUM> responsive to deployment (or launching) of the device onto a body of a user via a deployment applicator <NUM>. As shown in the example of <FIG>, the device deployment system <NUM> includes the deployment applicator <NUM> and the body-mountable electronic device <NUM> that is inserted or otherwise retained by the deployment applicator <NUM> prior to deployment.

The deployment applicator <NUM> can launch or otherwise deploy the body-mountable electronic device <NUM> onto the body of a user. As shown in the example of <FIG>, the deployment applicator <NUM> includes a deployment mechanism <NUM> and a trigger mechanism <NUM>. Additional or fewer components are possible. The deployment mechanism <NUM> can include a spring-loaded assembly, a magnetic assembly, or any other apparatus that is able to generate a sufficient launch force F to launch (or deploy) the body-mountable electronic device <NUM> onto the body of a user.

The trigger mechanism <NUM> is communicatively and/or mechanically coupled with the deployment mechanism <NUM> such that activating (or exercising), e.g., pressing, the trigger mechanism <NUM> causes the deployment mechanism <NUM> to launch the body-mountable electronic device <NUM>. As shown in the example of <FIG>, the trigger mechanism <NUM> comprises a mechanical button or latch mechanism, however, the trigger mechanism <NUM> can be any mechanical, electrical, etc., mechanism capable of triggering the deployment mechanism <NUM>.

The body-mountable electronic device <NUM> can be any electronic device that is adapted to monitor and/or sense conditions of the user once the device is deployed onto a body of the user. As shown in the example of <FIG>, the body-mountable electronic device <NUM> includes a motion sensor <NUM>, control circuitry <NUM> and a power source <NUM>. In some embodiments, the motion sensor <NUM> can be an accelerometer such as, for example, a three-axis digital accelerometer capable of providing a digital output indicating acceleration of the body-mountable electronic device <NUM>.

The control circuitry <NUM> can include one or more microprocessors, microcontrollers, memories, modules, engines, components, etc., that are configured to verify that the body-mountable electronic device is deployed onto a body of a user during a second phase of the two-phase wakeup mechanism. In some embodiments, the control circuitry <NUM> generates a second deployment indicator responsive to verification that the body-mountable electronic device has been deployed onto a body of a user via the deployment applicator <NUM>.

The power source <NUM> can include one or more disposable energy storage devices and any related charging and/or regulator circuitry that provides power to components of the body-mountable electronic device <NUM>. For example, power source <NUM> can include one or more batteries, capacitors, or other energy storage devices. Although not shown in the example of <FIG>, the body-mountable electronic device <NUM> can include one or more additional components such as processors, controllers, memories, etc..

To enhance the longevity of power source <NUM>, the body-mountable electronic device <NUM> is shipped and stored in a sleep (or pseudo-off) state. As noted above, the body-mountable electronic device <NUM> includes a two-phase deployment-initiated wakeup mechanism that reliably wakes up the body-mountable electronic device <NUM> from the sleep (or pseudo-off state) responsive to deployment (or launching) of the device onto a body of a user.

During a first phase of the two-phase wakeup mechanism, motion sensor <NUM> monitors for the occurrence of a first deployment indictor signifying detection of an acceleration that exceeds a predetermined threshold indicative of deployment of the body-mountable electronic device onto the body of the user. For example, the first deployment indictor can signify detection of a g-force event that exceeds a predetermined threshold g-force value. As discussed herein, the body-mountable electronic device <NUM> is retained in deployment applicator <NUM> until the device is deployed.

Responsive to detection of the first deployment indictor, control circuitry <NUM> is enabled for a second phase of the two-phase wakeup mechanism. During the second phase, the control circuitry attempts to verify that the body-mountable electronic device is deployed onto a body of a user by monitoring for occurrence of a second deployment indicator during a second phase of the two-phase wakeup mechanism.

In some embodiments, the deployment mechanism <NUM> includes a minimally invasive mechanism for deploying a biosensor in or on the body of the user. For example, the body-mountable electronic device <NUM> can include an extendable spring-loaded needle adapted to insert the biosensor into the body of the user upon deployment. An example deployment mechanism <NUM> including the extendable spring-loaded needle is shown and discussed in greater detail with reference to <FIG>. Referring to the second phase of the two-phase wakeup mechanism, in some embodiments, the control circuitry <NUM> can generate the second deployment indicator when an electrical current measured by the biosensor exceeds a predetermined threshold current value.

As noted above, the body-mountable electronic device <NUM> can be any electronic device primarily adapted to monitor and/or sense health-related information associated with the user during an operational state. The body-mountable electronic device <NUM> can provide feedback regarding the health-related information back to the user, e.g., via a built-in interface, via personal communication device, etc..

In some embodiments, the body-mountable electronic device <NUM> includes a wireless transmitter operably coupled with control circuitry <NUM> that directs the wireless transmitter to establish a communication channel with the personal communication device. Although not shown in the example of <FIG>, the personal communication device can be any communication device capable of establishing a wireless connection with the body-mountable electronic device <NUM> for receiving health-related information. Additionally, the personal communication device can include a display for presenting the health-related information to the user. Example personal communication devices include, but are not limited to, mobile phones, smart watches, etc..

In some embodiments, the control circuitry <NUM> can monitor the wireless connection and detect the second deployment indicator responsive to successfully establishing a wireless connection between the wireless transmitter and the personal communication device prior to expiry of a timeout period. This process ensures that the user has intentional launched the body-mountable electronic device onto his or her body.

In some embodiments, the control circuitry <NUM> can be configured to monitor the motion sensor <NUM> and recognize gestures during the second phase of the two-phase wakeup mechanism. In such instances, the control circuitry <NUM> can detect the second deployment indicator responsive to detection of a gesture. In some embodiments, a gesture can include a gesture pattern or series of movements. For example, the gesture pattern or series of movements can be a series of taps (on or near the device) by the user or some other movements unlikely to occur by accident.

<FIG> depicts a state diagram <NUM> illustrating example operations of a two-phase deployment-initiated wakeup mechanism, according to some embodiments. As shown in the example of <FIG>, the state diagram <NUM> includes states <NUM>, <NUM> and <NUM>, entry actions <NUM>, <NUM> and <NUM>, and transition conditions <NUM>, <NUM> and <NUM>. The example state operations and transitions shown in state diagram <NUM> may be performed in various embodiments by a body-mountable electronic device such as, for example, body-mountable electronic device <NUM> of <FIG>, or one or more microcontrollers, modules, engines, or components associated therewith. Additional or fewer states, entry actions and transition conditions are possible.

A body-mountable electronic device is placed in sleep state <NUM> at manufacture time to conserve energy during extended periods of non-operational time, e.g., transport, storage, etc. During a first phase of the two-phase wakeup mechanism, a motion sensor is activated to perform entry action <NUM>. As noted herein, during the sleep state <NUM>, other components of the body-mountable electronic device are disabled. Entry action <NUM> includes detecting a first deployment indicator. As discussed herein, the first deployment indicator signifies occurrence of an acceleration event indicative of deployment of the body-mountable electronic device via a deployment applicator, e.g., a g-force that exceeds a predetermined g-force threshold.

In the example of <FIG>, the first deployment indicator acts as transition condition <NUM> transitioning the body-mountable electronic device from the sleep state <NUM> to a wakeup verification state <NUM>. Upon entering to the wakeup verification state <NUM>, entry action <NUM> is performed. As shown in the example of <FIG>, entry action <NUM> includes enabling control circuitry for detecting a second deployment indicator to verify the deployment of the body-mountable electronic device via a deployment applicator.

As discussed herein, deployment of the body-mountable electronic device can be verified in a variety of ways. For example, if the body-mountable electronic device is meant to operate while paired to a personal communication device, e.g., mobile phone or smart watch, then a lack of connectivity within a threshold time can indicate a false wakeup. Likewise, if the body-mountable electronic device includes a biosensor, the biosensor readings can be sampled to verify deployment of the sensor and thereby verify deployment of the body-mountable electronic device. For example, if the body-mountable electronic device comprises a continuous glucose monitoring system, an analyte sensor adapted to measure glucose is typically placed beneath the skin. If the sensor is not connected, i.e., the sensor is not in interstitial fluid, then a current flowing through the sensor will be less than a threshold value.

Yet another way deployment of the body-mountable electronic device can be verified is through the use of accelerometer gestures. In some embodiments, verification can be achieved through the detection a gesture or gesture pattern, e.g., three taps and the body-mountable electronic device transitions from the wakeup verification state to an operational state.

While operating in the wakeup verification state <NUM>, the second deployment indicator acts as transition condition <NUM> transitioning the body-mountable electronic device to an operational state <NUM> when detected. Upon entering to the operational state <NUM>, entry action <NUM> enables a normal operation of the body-mountable electronic device. As discussed herein, during the operational state <NUM>, the body-mountable electronic device <NUM> is adapted to perform its primary functions, e.g., monitoring and/or sensing health-related information associated with the user on which the device is deployed and providing feedback regarding the health-related information. It is appreciated that primary functionality is disabled during sleep state <NUM> and wakeup verification state <NUM>.

<FIG> and <FIG> depict flow diagrams illustrating example operations 300A and 300B, respectively, for reliably transitioning a body-mountable electronic device from a sleep state to a functional (or operational) state responsive to deployment of the mountable device by a deployment applicator onto the body of a user, according to some embodiments. More specifically, the example operations 300A depict an implementation whereby the motion sensor detects a first deployment indicator and example operations 300B depict an implementation whereby control circuitry detects the first deployment indicator. The example operations 300A and 300B may be performed in various embodiments by a body-mountable electronic device such as, for example, body-mountable electronic device <NUM> of <FIG>, or one or more microcontrollers, modules, engines, or components associated therewith. Additional or fewer states, entry actions and transition conditions are possible.

Referring first to the example of <FIG>, to begin, at <NUM>, during a first phase of the two-phase wakeup mechanism, a motion sensor of the body-mountable electronic device monitors for occurrence of a first deployment indicator while in a sleep state. As discussed herein, the first deployment indicator signifies an acceleration event indicative of deployment of the body-mountable electronic device onto the body of the user. At decision <NUM>, the body-mountable electronic device determines if the first deployment indicator is detected. If the first deployment indicator is not detected, the motion sensor continues to monitor, at <NUM>, for occurrence of the first deployment indicator.

However, if the first deployment indicator is detected, at <NUM>, control circuitry of the body-mountable electronic device is enabled thereby transitioning the body-mountable electronic device from a sleep state to a wakeup verification state for a second phase of the two-phase wakeup mechanism. At decision <NUM>, the body-mountable electronic device determines if the second deployment indicator is detected. If the second deployment indicator is not detected, the body-mountable electronic device returns to the sleep state and the motion sensor continues to monitor, at <NUM>, for occurrence of the first deployment indicator. However, if the second deployment indicator is detected, at <NUM>, control circuitry transitions the body-mountable electronic device from the wakeup verification state to an operational state.

The examples discussed herein primarily include a motion sensor that is adapted to detect the first deployment indicator, e.g., a g-force that exceeds a predetermined threshold. However, in some implementations, the control circuitry can be enabled by any motion and the control circuitry can be adapted to detect the first deployment indicator, e.g., motion exceeding a threshold. The example of <FIG> illustrates this implementation and discusses the operation in greater detail.

Referring next to the example of <FIG>, to begin, at <NUM>, during a first phase of the two-phase wakeup mechanism, a motion sensor of the body-mountable electronic device monitors for motion while the device is in a sleep state (e.g., control circuitry or microcontroller in sleep state). At decision <NUM>, the motion sensor determines if motion is detected. If motion is detected, at <NUM>, control circuitry of the body-mountable electronic device is enabled thereby transitioning the body-mountable electronic device from a sleep state to a wakeup verification state for a second phase of the two-phase wakeup mechanism.

At decision <NUM>, the control circuitry of the body-mountable electronic device determines if the first deployment indicator is detected. As discussed herein, the first deployment indicator signifies an acceleration event indicative of deployment of the body-mountable electronic device onto the body of the user. If the first deployment indicator is not detected, the body-mountable electronic device returns to the sleep state and the motion sensor continues to monitor, at <NUM>, for occurrence of motion. However, if the first deployment indicator is detected, at <NUM>, the control circuitry of the body-mountable electronic device monitors for occurrence of the second deployment indicator. At decision <NUM>, the body-mountable electronic device determines if the second deployment indicator is detected. If the second deployment indicator is not detected, then the motion sensor continues to monitor, at <NUM>, for occurrence of motion. However, if the second deployment indicator is detected, at <NUM>, the control circuitry transitions the body-mountable electronic device from the wakeup verification state to an operational state.

<FIG> depicts example components of a body-mountable electronic device <NUM> including a two-phase deployment-initiated wakeup mechanism, according to some embodiments. The body-mountable electronic device can be body-mountable electronic device <NUM> of <FIG>, although alternative configurations are possible. As illustrated in the example of <FIG>, example components <NUM> include power source <NUM>, microcontroller <NUM>, motion sensor <NUM>, biosensor <NUM>, and wireless transceiver <NUM>. Additional or fewer components are possible.

Power source <NUM> provides power to the other example components <NUM>. The power source <NUM> can include one or more energy storage devices and any related charging and/or regulator circuitry. In some embodiments, power source <NUM> can include one or more disposable batteries, capacitors, or other energy storage devices.

The microcontroller <NUM> can be a small computer or other circuitry that retrieves and executes software from memory <NUM>. The microcontroller <NUM> may be implemented within a single device or system on a chip (SoC) or may be distributed across multiple processing devices that cooperate in executing program instructions. As shown in the example of <FIG>, the microcontroller <NUM> includes memory <NUM>, a communication interface <NUM>, and a processing system <NUM>. The microcontroller <NUM> is operatively or communicatively coupled with various sensors including the motion sensor <NUM> and the biosensor <NUM>. Additionally, as shown in the example of <FIG>, the microcontroller <NUM> is operatively or communicatively coupled with the wireless transceiver <NUM>.

The memory <NUM> can include program memory and data memory. As shown, memory <NUM> includes a wakeup module <NUM>. Other modules are also possible. Although shown as software modules in the example of <FIG>, functionality of wakeup module <NUM> can be implemented individually or in any combination thereof, partially or wholly, in hardware, software, or a combination of hardware and software.

The communication interface <NUM> may include communication connections and devices that together facilitate communication with auxiliary (or personal communication) devices such as, for example, mobile phones or smart watches, as well as other electronic devices via at least wireless transceiver <NUM>. The processing system <NUM> can include one or more processor cores that are configured to retrieve and execute the wakeup module <NUM> for reliably assisting in performing the two-phase wakeup mechanism as discussed herein.

The motion sensor <NUM> senses motion of the body-mountable electronic device. The motion sensor can be, for example, a three-axis digital accelerometer that provides a digital output indicating acceleration of the body-mountable electronic device to the microcontroller <NUM>.

The biosensor <NUM> detects an analyte or interstitial fluid. In some embodiments, biosensor <NUM> can be a hair-like sensor that is positioned just beneath the surface of the skin of a user upon deployment. In some embodiments, the biosensor <NUM> provides the microcontroller <NUM> with raw values of the readings.

The wireless transceiver <NUM> can be, for example, a Bluetooth™ or Bluetooth Low Energy™ (BLE) transceiver. Other wireless transceiver technologies, including Wi-Fi™ and Infrared technologies are also possible. In some embodiments, the body-mountable electronic device <NUM> is adapted to pair with a personal communication device <NUM>, e.g., a smart phone or watch. As discussed herein, the pairing process can be monitored and used as a second phase of the two-phase wakeup mechanism. For example, if there is no Bluetooth Low Energy (BLE) connection within a predetermined timeout period, e.g., ten minutes, then the system times out.

Referring to the wakeup module <NUM>, in operation, the module can direct the microcontroller <NUM> to perform one or more operations to verify deployment of a body-mountable electronic device <NUM> responsive to detection of acceleration event indicative of the deployment of the body-mountable electronic device. Performing the operations can result in a determination that the acceleration event was a false wakeup, e.g., not a deployment onto a body of a user via the deployment applicator. In such instances, the microcontroller <NUM> directs the body-mountable electronic device to return or remain in a sleep state. Alternatively, if the operations result in a determination that the body-mountable electronic device was deployed onto the body of a user via the deployment applicator, then the body-mountable electronic device transitions to an operational state.

As discussed herein, during the operational state, the body-mountable electronic device <NUM> performs its primary functions, e.g., monitors and/or senses health-related information associated with the user.

<FIG> depict diagrams illustrating an example operational environment <NUM> during various stages of deploying a body-mountable electronic device <NUM> retained in a mountable device deployment system <NUM> onto a user body <NUM>, according to some embodiments. More specifically, the examples of <FIG>, <FIG> and <FIG> illustrate the example deployment environment <NUM> prior to deployment of the body-mountable electronic device <NUM> on the user body <NUM>, during deployment of the body-mountable electronic device <NUM> on the user body <NUM>, and after deployment of the body-mountable electronic device <NUM> on the user body <NUM>, respectively.

As shown in the examples of <FIG>, the example operational environment <NUM> includes a mountable device deployment system <NUM> and user body <NUM>. The mountable device deployment system <NUM> includes a deployment applicator <NUM> and the body-mountable electronic device <NUM>. The deployment applicator <NUM> can launch or otherwise deploy the body-mountable electronic device <NUM> onto the user body <NUM>. The body-mountable electronic device <NUM> can include a base having a bio-compatible adhesive disposed on a proximal surface for removably attaching the body-mountable electronic device to skin of the user.

The deployment applicator <NUM> includes a deployment mechanism <NUM> and a trigger mechanism <NUM>. As shown in the examples of <FIG> and <FIG>, the deployment mechanism <NUM> is in the form of an extendable spring-loaded needle that is adapted to insert a hair-like biosensor <NUM> just beneath the surface of the user body <NUM> upon deployment. The trigger mechanism <NUM> is communicatively and/or mechanically coupled with the deployment mechanism <NUM> such that exercising, e.g., pressing, the trigger mechanism <NUM> causes the deployment mechanism <NUM> to launch the body-mountable electronic device <NUM>. As shown in the example of <FIG>, the trigger mechanism <NUM> comprises a mechanical button or latch mechanism, however, the trigger mechanism <NUM> can be any mechanical, electrical, etc., mechanism capable of triggering the deployment mechanism <NUM>.

The body-mountable electronic device <NUM> can be any electronic device that is adapted to monitor and/or sense conditions of the user once the device is deployed onto a body of the user. In some embodiments, the body-mountable electronic device <NUM> can be a body-mountable electronic device <NUM> of <FIG>, although alternative configurations are possible.

As shown in the example of <FIG>, the body-mountable electronic device <NUM> includes a motion sensor <NUM>, control circuitry <NUM> and a power source (not shown). In some embodiments, the motion sensor <NUM> can be an accelerometer capable of providing an output indicating accelerations detected by the body-mountable electronic device <NUM>.

Referring first to <FIG> illustrates a first phase of the two-phase wakeup mechanism as motion sensor <NUM> monitors for the occurrence of a first deployment indictor signifying detection of an acceleration event that exceeds a predetermined threshold indicative of deployment of the body-mountable electronic device <NUM> onto the user body <NUM>.

As shown in the example of <FIG>, responsive to detection of the first deployment indictor, control circuitry <NUM> is enabled for a second phase of the two-phase wakeup mechanism. During the second phase, the control circuitry <NUM> attempts to verify that the body-mountable electronic device is deployed onto the user body <NUM> by monitoring for occurrence of a second deployment indicator during the second phase.

As shown in the example of <FIG>, during the second phase of the two-phase wakeup mechanism, the control circuitry <NUM> generates the second deployment indicator when an electrical current measured by the biosensor <NUM> exceeds a predetermined threshold current value. As discussed herein, the body-mountable electronic device <NUM> can be any electronic device primarily adapted to monitor and/or sense health-related information associated with the user during an operational state. Once deployed, the body-mountable electronic device <NUM> can provide feedback regarding the health-related information back to the user, e.g., via a built-in interface, via personal communication device, etc. The feedback can provide useful real-time or near real-time health-related information to a user. For example, glucose levels and information on how the glucose levels are affected by food, activities, etc., can be provided to a user with type I, II or prediabetes.

<FIG> depict flow diagrams illustrating example operations performed during a second phase of a two-phase wakeup mechanism, according to some embodiments. The example operations discussed with reference to <FIG> may be performed in various embodiments by a body-mountable electronic device such as, for example, body-mountable electronic device <NUM> of <FIG>, or one or more microcontrollers, modules, engines, or components associated therewith.

As discussed herein, the body-mountable electronic device is shipped and stored in a sleep (or pseudo-off) state. The body-mountable electronic device includes a two-phase deployment-initiated wakeup mechanism that reliably wakes up the body-mountable electronic device from the sleep (or pseudo-off) state to a functional (or operational) state responsive to deployment (or launching) of the device onto a user body. During a first phase of the two-phase wakeup mechanism, a motion sensor detects an acceleration event indicative of deployment of the device onto the body of the user. During a second phase of the two-phase mechanism, control circuitry is enabled to verify that the device has been launched onto the body of a user and, thus, reduce a likelihood of a false wakeup, e.g., unintended transitions to the functional (or operational) state.

Referring first to the example of <FIG> depicts a flow diagram illustrating example operations <NUM> for verifying deployment of a body-mountable electronic device using a biosensor adapted to detect an analyte or interstitial fluid, according to some embodiments.

To begin, at <NUM>, the body-mountable electronic device applies a voltage to the biosensor and, at <NUM>, measures the current across the biosensor. As discussed herein, if the biosensor (analyte) sensor is deployed, i.e., the sensor is in interstitial fluid, then a current will be flowing through the device. Likewise, if the biosensor (analyte) sensor is not deployed, i.e., the sensor is not in interstitial fluid, then a current should not be flowing through the device.

At decision <NUM>, the body-mountable electronic device determines if the measured current exceeds a predetermined current threshold. It is appreciated that in humid environments, it is possible to detect a small current flow even when the biosensor is not deployed. Accordingly, the predetermined current threshold can be set to a nominal value to reduce false wakeups in humid environments. If the measured current does not exceed the predetermined current threshold, the body-mountable electronic device remains or returns to the sleep state. However, if the measured current does exceed the predetermined current threshold, at <NUM>, the body-mountable electronic device generates the second deployment indicator.

<FIG> depicts a flow diagram illustrating example operations <NUM> for verifying deployment of a body-mountable electronic device using a wireless transmitter adapted to establish a wireless connection with a personal communication device, according to some embodiments.

To begin, at <NUM>, the body-mountable electronic device enables the wireless transmitter. For example, the body-mountable electronic device can enable a BLE transceiver of the body-mountable electronic device. Once enabled, the device is discoverable and can be paired with a personal communication device such as, for example, personal electronic device <NUM> of <FIG>. At <NUM>, the body-mountable electronic device starts a timer. The timer can count up or down, but a wireless connection must be established within a predetermined timeout or period.

At <NUM>, the body-mountable electronic device monitors a connection status of the wireless transmitter and, at decision <NUM>, determines if a connection has been established, e.g., if the body-mountable electronic device and the personal communication device have paired. If a connection has not been established, at decision <NUM>, the body-mountable electronic device determines if the timeout period has occurred. For example, if there is no BLE connection within a predetermined timeout period, e.g., ten minutes, then the system times out and, at <NUM>, returns to a sleep (or pseudo-off) state. Returning to decision <NUM>, if a connection is established, at <NUM>, the body-mountable electronic device generates the second deployment indicator which, in the example of <FIG>, is indicative of establishment of a wireless connection between the wireless transmitter and the personal communication device prior to expiry of the timeout period.

<FIG> depicts a flow diagram illustrating example operations <NUM> for verifying deployment of a body-mountable electronic device via one or more accelerometer gestures, according to some embodiments.

To begin, at <NUM>, the body-mountable electronic device monitors the motion sensor for detection of an accelerometer gesture or pattern of gestures. At decision <NUM>, the body-mountable electronic device determines if the accelerometer gesture or pattern of gestures is detected. If not, the body-mountable electronic device continues monitoring the motion sensor at step <NUM>. Otherwise, at <NUM>, the body-mountable electronic device compares the detected gesture or pattern of gestures to a predetermined gesture or pattern. For example, a pattern of gestures can include a series of movements or taps. At decision <NUM>, the body-mountable electronic device determines if there is a match. If there is not a match, at decision <NUM>, the body-mountable electronic device determines if a timeout period has occurred. If the timeout period has occurred, at <NUM>, the body-mountable electronic device returns to a sleep (or pseudo-off) state. Otherwise, the body-mountable electronic device continues to monitor for gestures at <NUM>. Returning to decision <NUM>, if the gesture or pattern of gestures match a predetermined gesture or pattern, at <NUM>, the body-mountable electronic device generates the second deployment indicator.

The functional block diagrams, operational scenarios and sequences, and flow diagrams provided in the Figures are representative of exemplary systems, environments, and methodologies for performing novel aspects of the disclosure. While, for purposes of simplicity of explanation, methods included herein may be in the form of a functional diagram, operational scenario or sequence, or flow diagram, and may be described as a series of acts, it is to be understood and appreciated that the methods are not limited by the order of acts, as some acts may, in accordance therewith, occur in a different order and/or concurrently with other acts from that shown and described herein. For example, those skilled in the art will understand and appreciate that a method could alternatively be represented as a series of interrelated states or events, such as in a state diagram. Moreover, not all acts illustrated in a methodology may be required for a novel implementation.

Claim 1:
A body-mountable electronic device (<NUM>, <NUM>) comprising:
a motion sensor (<NUM>, <NUM>) adapted to detect, during a first phase of a two-phase wakeup mechanism while the body-mountable electronic device is in a sleep state, a deployment indicator comprising an acceleration event indicative of deployment of the body-mountable electronic device; and
control circuity (<NUM>) enabled by the acceleration event and adapted to:
transition the body-mountable electronic device from the sleep state to a wakeup verification state in response to the deployment indicator; and
transition the body-mountable electronic device from the wakeup verification state to an operational state in response to verifying, during a second phase of the two-phase wakeup mechanism, that the body-mountable electronic device is deployed onto a body of a user,
characterised in that the body-mountable electronic device further comprises:
either
a biosensor (<NUM>) operably coupled with the control circuitry (<NUM>) and adapted to detect an analyte, wherein the control circuitry is configured to detect that the body-mountable electronic device is deployed when an electrical current measured across the biosensor exceeds a predetermined threshold value;
or
a wireless transmitter (<NUM>) operably coupled with the control circuitry (<NUM>) and adapted to transmit information to a communication device (<NUM>), wherein the control circuitry is configured to detect that the body-mountable electronic device is deployed in response to establishment of a wireless connection between the wireless transmitter and the communication device prior to expiry of a timeout.