RECEIVERS FOR ANALYZING AND DISPLAYING SENSOR DATA
This disclosure provides systems, methods and apparatus for processing, transmitting and displaying data received from an analyte sensor, such as a glucose sensor. The system may include a display device with at least one input device. In response to movement of or along the input device, the display device may change a glucose data output parameter and update an output of the display device using the changed output parameter.
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 is a continuation of U.S. application Ser. No., 15/931,406, filed May 13, 2020, which is a continuation of Ser. No. 16/599,603, filed Oct. 11, 2019, now abandoned, which is a continuation of U.S. application Ser. No. 16/291,968, filed Mar. 4, 2019, now abandoned, which is a continuation of U.S. application Ser. No. 14/973,403, filed Dec. 17, 2015, now U.S. Pat. No. 10,265,030, which is a continuation of U.S. application Ser. No. 14/098,383, filed Dec. 5, 2013, now U.S. Pat. No. 9,504,430, which is a continuation of U.S. application Ser. No. 13/026,163, filed Feb. 11, 2011, now U.S. Pat. No. 9,041,730, which claims the benefit of U.S. Provisional Application No. 61/304,337, filed Feb. 12, 2010. Each of the aforementioned applications is incorporated by reference herein in its entirety, and each is hereby expressly made a part of this specification.FIELD
The present invention relates generally to systems and methods for processing, transmitting and displaying data received from an analyte sensor, such as a glucose sensor.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 typically requires 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 find out too late, sometimes incurring dangerous side effects, of a hyperglycemic or hypoglycemic condition. In fact, it is not only unlikely that a diabetic will take a timely SMBG value, but additionally the diabetic will not know if his blood glucose value is going up (higher) or down (lower) based on 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.SUMMARY
Various implementations of systems, methods and devices within the scope of the appended claims each have several aspects, no single one of which is solely responsible for the desirable attributes described herein. Without limiting the scope of the appended claims, some prominent features are described herein.
Details of one or more implementations of the subject matter described in this specification are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that the relative dimensions of the following figures may not be drawn to scale.
In one embodiment, a glucose monitoring system comprises a display device configured to receive displayable sensor information from a sensor electronics module physically connected to a continuous analyte sensor. The display device may comprise a storage device configured to store at least some of the displayable sensor information, a display; and at least one input device. The display device is configured to detect movement of or along the at least one input device, and is configured to change a glucose data output parameter in response to the detected movement. Furthermore, the display device is configured to update an output of glucose data using the changed glucose data output parameter.
In another embodiment, a computerized method for displaying glucose information on a display device in a glucose monitoring system comprises detecting movement of or along at least one input device, changing a glucose data output parameter in response to the detected movement, and updating an output of the display device using the glucose data output parameter.
In another embodiment, a computer readable medium has stored thereon instructions that when executed by a processor in a glucose monitoring system comprising a display device with at least one input device, cause the processor to detect movement of or along the at least one input device, change a glucose data output parameter in response to the detected movement, and update an output of the display device using the changed glucose data output parameter.
In accordance with common practice the various features illustrated in the drawings may not be drawn to scale. Accordingly, the dimensions of the various features may be arbitrarily expanded or reduced for clarity. In addition, some of the drawings may not depict all of the components of a given system, method or device. Finally, like reference numerals may be used to denote like features throughout the specification and figures.DETAILED DESCRIPTION
Various aspects of implementations within the scope of the appended claims are described below. It should be apparent that the aspects described herein may be implemented in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure a person/one having ordinary skill in the art should appreciate that an aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method may be practiced using any number of the aspects set forth herein. In addition, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to or other than one or more of the aspects set forth herein.
The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other implementations. The following description is presented to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purpose of explanation. It should be appreciated that one of ordinary skill in the art would realize that the invention may be practiced without the use of these specific details. In other instances, well known structures and processes are not elaborated in order not to obscure the description of the invention with unnecessary details. Thus, the present invention is not intended to be limited by the implementations shown, but is to be accorded with the widest scope consistent with the principles and features disclosed herein.
In order to facilitate an understanding of the systems and methods discussed herein, a number of terms are defined below. The terms defined below, as well as other terms used herein, should be construed to include the provided definitions, the ordinary and customary meaning of the terms, and any other implied meaning for the respective terms. Thus, the definitions below do not limit the meaning of these terms, but only provide exemplary definitions.
The terms “processor module,” “microprocessor” and “processor” as used herein are broad terms and are to be given their ordinary and customary meaning to a person of ordinary skill in the art (and are not to be limited to a special or customized meaning), and furthermore refer without limitation to a computer system, state machine, and the like that performs arithmetic and logic operations using logic circuitry that responds to and processes instructions that drive a computer. A processor may include a conventional processor, such as a processor of a desktop, notebook, or mobile computing devices; an application specific integrated circuit (ASIC); a field programmable gate array (FPGA); or any other suitable processing hardware.
The term “sensor” as used herein is a broad term and is to be given its ordinary and customary meaning to a person of ordinary skill in the art (and is not to be limited to a special or customized meaning), and furthermore refers without limitation to any device (or portion of a device) that measures a physical quantity and converts it into a signal that can be processed by analog and/or digital circuitry, such as a processor. Thus, the output of a sensor may be an analog and/or digital signal. Examples of sensors include analyte sensors, glucose sensors, temperature sensors, altitude sensors, accelerometers, blood pressure, and heart rate (e.g., pulse) sensors.
The term “glucose sensor” as used herein is a broad term and is to be given its ordinary and customary meaning to a person of ordinary skill in the art (and are not to be limited to a special or customized meaning), and furthermore refer without limitation to any sensor by which glucose can be quantified (e.g., enzymatic or non-enzymatic). For example, some embodiments of a glucose sensor may utilize a membrane that contains glucose oxidase that catalyzes the conversion of oxygen and glucose to hydrogen peroxide and gluconate, as illustrated by the following chemical reaction:
Because for each glucose molecule metabolized, there is a proportional change in the co-reactant O2 and the product H2O2, one can use an electrode to monitor the current change in either the co-reactant or the product to determine glucose concentration.
The term “sensor data”, as used herein is a broad term and is to be given its ordinary and customary meaning to a person of ordinary skill in the art (and are not to be limited to a special or customized meaning), and furthermore refers without limitation to any data associated with a sensor, such as a continuous analyte sensor, a pulse sensor, a temperature sensor, or any other biological or other sensor. In the case of a continuous analyte sensor, sensor data may include a raw data stream, or simply data stream, of analog or digital signal directly related to a measured analyte from an analyte sensor (or other signal received from another sensor), as well as calibrated and/or filtered raw data. Sensor data may include calibrated data, smoothed data, filtered data, transformed data, and/or any other data associated with a sensor.
The term “algorithm” as used herein is a broad term and is to be given its ordinary and customary meaning to a person of ordinary skill in the art (and is not to be limited to a special or customized meaning), and furthermore refers without limitation to a computational process (associated with computer programming or other written instructions) involved in transforming information from one state to another.
The term “substantially” as used herein is a broad term and is to be given its ordinary and customary meaning to a person of ordinary skill in the art (and is not to be limited to a special or customized meaning), and furthermore refers without limitation to being largely but not necessarily wholly that which is specified.
The term “host” as used herein is a broad term and is to be given its ordinary and customary meaning to a person of ordinary skill in the art (and is not to be limited to a special or customized meaning), and furthermore refers without limitation to a mammal, such as a human, that is implanted with a device, such as a sensor.
The term “continuous analyte sensor” as used herein is a broad term and is to be given its ordinary and customary meaning to a person of ordinary skill in the art (and is not to be limited to a special or customized meaning), and furthermore refers without limitation to a device, or portion of a device, that continuously or continually measures a concentration of an analyte, for example, at time intervals ranging from fractions of a second up to, for example, 1, 2, or 5 minutes, or longer. In one exemplary embodiment, a glucose sensor comprises a continuous analyte sensor, such as is described in U.S. Pat. No. 7,310,544, which is incorporated herein by reference in its entirety.
The term “alarm” as used herein is a broad term, and is to be given its ordinary and customary meaning to a person of ordinary skill in the art (and is not to be limited to a special or customized meaning), and furthermore refers without limitation to an alert or signal, such as an audible, visual, and/or tactile signal, triggered in response to one or more alarm conditions. For example, in one embodiment, hyperglycemic and hypoglycemic alarms are triggered when present or predicted clinical danger is assessed based on continuous analyte data.
The term “receiver” as used herein is a broad term, and is to be given its ordinary and customary meaning to a person of ordinary skill in the art (and is not to be limited to a special or customized meaning), and furthermore refers without limitation to a device that receives sensor data from a sensor, either directly from the sensor (e.g., via a wired or wireless communication link) or indirectly from another device. A receiver typically includes one or more processor, a computer readable storage medium (such as one or more volatile and/or non-volatile storage device), one or more displays, and one or more input devices. Various input devices of a receiver are discussed below, some of which are integrated into displays of receivers. In addition to including circuitry for communicating with one or more sensors, a receiver may also include communication circuitry for communicating with other devices, such as telephony circuitry that allows transmission of short messaging service (SMS) messages or voice communications, and/or a network interface that allows TCP/IP communications across one or more networks, including the Internet. A receiver typically executes software that controls operations of the receiver.
In the embodiment of
In the embodiment of
In some embodiments, any other pane, such as the pane 116 of
In the example of
In the embodiment of
A resistive touch sensitive display may include layers that are separated by a small gap such that when a user's finger touches a particular portion of the surface the two layers are brought into contact in order to cause an electrical current to run through layers at that particular position. The position where the current is detected on the resistive surface may then be used to determine a particular screen position where the surface was touched. The screen position touched may then be used by the receiver's software to determine any processes to be performed in response to the detected touching of the display (e.g., displaying a signal strength indicator for a second sensor in response to determining that the user touched the signal strength indicator for a first sensor).
In a capacitive system, one layer of the display stores a capacitive charge that is transferred to a user's finger (or other object) that is in contact with (or in very close proximity to) the touch sensitive display. Thus, the position on the surface where a reduced charge is detected can be translated into coordinates of the display where the user is interacting with the touch sensitive surface.
A surface acoustic wave system may include at least two transducers, one for receiving and one for transmitting acoustic signals. In one embodiment, the transducers are placed along the X and Y axes of a touch sensitive display, with mirrors on the opposite sides of the touch sensitive display. The receiving transducer is configured to detect when a portion of the wave has been disturbed by an object, such as a user's finger or stylus, and to determine based on disturbance in the wave a specific position where the object touched or moved near to the touch sensitive surface.
In one embodiment, the selection button 214 may be configured to cycle through various user interfaces on the display screen 210. For example, when the selection button 214 is pressed with the display of
User Interface and Navigation Options
In one embodiment, motion in a first direction on the respective input device of a receiver causes a time period for which glucose data is displayed on the receiver to increase, while motion in a second direction (e.g., a direction opposite to the first direction) causes the time period for which glucose data is displayed on the receiver to decrease.
In one embodiment, similar to the sliding, selectable scale on the x-axis, the receiver is also configured to detect motion along the y-axis that may indicate various display changes desired by the user. For example, motion along the y-axis may indicate that the current glucose chart (or other data displayed on the receiver) should be increased or decreased in size (e.g., zoom in or zoom out). For example, in
In the embodiment of
In one embodiment, certain receivers, such as receiver having a touch sensitive screen, may include a locking mechanism to prevent changes when accidentally touched.
In one embodiment, the trend indicator 520 and/or other data of the user interface 510 may change colors according to a status of the trend indicator. For example, if the users glucose level is currently high, but the 15 minute trend indicates a downward movement, the trend indicator may be green (while the actual graph data that exceed the high threshold may be red). Likewise, if the user's glucose level is near a predetermined high and the 15 minute trend indicates upward movement, the trend indicator may be colored red (while the actual graph data remains black or green). Additionally, the glucose level 512 may change color in response to changes in a trend in order to convey trend information without requiring additional display area. In other embodiments, colors, fonts, font formatting, and other display options may be selectively changed in order to convey information associated with sensor data.
In the embodiment of
A signal strength indicator 530 is also included in the user interface 510. The signal strength indicator 530 graphically indicates a strength of a current communication link between the receiver and a transmitter. In the embodiment of
In the embodiment of
In the embodiment of
In the embodiment of
Beginning in block 810, sensor data for a default time period is displayed on the receiver. In one embodiment, the default time period is preset by a manufacturer and may be adjusted by the user to customize the default time period. The glucose data may be displayed in various formats, such as the line graphs that are included in many of the figures, other types of graphs or charts, and/or raw or summarized sensor data.
Moving to block 820, the receiver monitors signals received from the respective input device(s) in order to determine if movement on one or more of the input devices has been detected. Depending on embodiment, input devices may include one or more touch sensitive surfaces, such as a capacitive, resistive, and/or acoustic wave devices, a scroll wheel, either touch sensitive or mechanical, and/or any other available input device.
Next, in block 830, the receiver determines if movement has been detected on one or more of the receiver input devices. If movement in a first direction has been detected, the method moves to block 840 where the time period for which sensor data is displayed is decreased. Alternatively, if movement in a second direction is detected, the method moves to block 850 where the time period for which sensor data is displayed is increased. In one embodiment, the decrease (e.g., block 840) or increase (e.g., block 850) occurs at a predetermined increment. In another embodiment, the decrease (or increase) in the time period change is adjusted based on a speed and/or acceleration of the detected movement, such that a fast movement results in a decrease (or increase) in the time period at a greater interval than a slow movement would cause. In block 830, if no movement is detected, the method continues to block 860 where the display is updated to illustrate sensor data for the current time period. Accordingly, if the time period has been adjusted at blocks 840 or 850, the display will be updated to include additional or less (depending on whether the time period has increased or decreased) sensor information. With the time period for the sensor data updated in block 860, the method returns to block 820 where the input device(s) of the receiver are monitored for additional movements that may indicate further changes to the time period.
Modes may be provided to allow a user to customize display and alert preferences based on a status of the user and/or a status of the receiving display device. For example, different user-selectable modes based on the status of a user may include one or more of resting, exercise, do not disturb, silent, loud, soft, illness, menstruation, mealtime, snooze, day, night, hyperglycemica, hypoglycemia, clinical risk, and the like. These modes may be selected by the user at anytime and may be selected to be activated and deactivated according to a schedule. For example, a sleep mode may be selected such that it is activated from 10 pm to 7 am each night or a do not disturb mode that may be selected such that it is activated from 1 pm to 4 pm Monday through Friday. In another embodiment, a selected mode may be associated with a timer such that after an indicated time period, the mode is automatically changed back to a default mode. For example, a user may select an exercise mode when entering a gym for a one hour training session and may associate a sixty minute timer so that the default mode is activated automatically after the workout is complete.
The selected mode may indicate changes in how glucose data is displayed based on the display/response preferences specified for each mode. For example, a mealtime mode may adjust a time period for displaying glucose data on a glucose chart by shortening the time period displayed to show a higher resolution of changes in glucose levels while the mode is selected. Furthermore, when a person is exercising, his/her glucose levels may increase or decrease in trends that would be abnormal under any other circumstances; by selecting an appropriate mode, additional information specially applicable to exercise conditions may be displayed and formatting may be adjusted.
Additionally, alerts associated with respective modes may vary in order to detect sensor data that is of interest to the user that has selected that particular mode. For example, selection of the diabetes mode may select alerts and corresponding alert conditions associated with high and low blood glucose thresholds. However, these same alerts may not be interesting to a woman that is going through a high risk pregnancy and wishes to track certain of her vital signs. Similarly, an athlete that selects the athletic mode may be interested in receiving alerts indicating that the athletes heart rate exceeds a predetermined (e.g., user defined) threshold. Additionally, alerts for a child with diabetes may be at different levels than would be customary for an adult with diabetes, and changes in a child's blood glucose levels over time may be less or more indicative of changes that should trigger an alert. Accordingly, the alert conditions associated with different modes may vary. Furthermore, the delivery method for triggered alerts may vary according to a selected mode, such that an alert for a child that has reached a blood glucose level near hypoglycemia may be transmitted to a caregiver of the child, while a similar alert for an adult that may be displayed only on the adults receiver. Thus, each of the modes may include custom alerts and corresponding alert conditions, as well as delivery options, which may be further customized by the particular user to meet the user's needs.
In one embodiment, the selected mode may affect which alerts are triggered such that certain sensor data might trigger an alert when the user has selected a first mode, but would not trigger an alert when the host has selected a second mode. For example, an alert that may be triggered when a user has selected a day mode, may not be triggered when a user has selected a night mode. Furthermore, the length, volume or type of alert may change based on the selected mode. For example, when a soft mode is selected, the volume of alerts are automatically reduced, while in a silent mode, a vibration alert is used in place of an audible alert.
In one embodiment, the algorithms that are used to analyze sensor data may change based on a selected mode. For example, a child with diabetes may select the child mode in order to initiate monitoring of blood glucose levels of the child and to provide appropriate alerts. However, the blood glucose level of the child may be calculated using a different algorithm than might be used for an adult (using the standard diabetes mode).
In one embodiment, each of the available modes is associated with predetermined default sensor information, menu options, charts and/or report types, alert criteria, and/or data analysis algorithms, which may be adjusted by a particular user to meet the users specific needs. Additionally, a user may select a custom mode in order to define custom settings for any of the above noted attributes.
In other embodiments, other features of the receiver software may be customized based on a selected mode. For example, different icons may be associated with different modes. For example, an athletic mode may include icons that illustrate an athlete in various positions, while the child mode may have default icons that indicate static or animated cartoon characters. In one embodiment, certain modes require different setup information and, thus, may be associated with different information requests as part of a mode setup routine (see
Beginning in block 1010, the receiver displays identifiers of any located transmitters and allows the user to select one or more appropriate transmitters for communication with the receiver. In one embodiment, the receiver automatically detects any sensors within range of the receiver when the method of
Next, in block 1020, the receiver displays the default high and low alert levels for sensor data received from the sensor and/or derived from the sensor data. For example, if the method of
Moving to block 1030, the user is instructed to insert and/or place one or more sensors on the appropriate anatomical positions, if not already so positioned. In one embodiment, the receiver displays text, images, and/or video illustrating where and how selected sensors are to be optimally positioned.
In block 1040, the user is prompted to enter current calibration information, such as a current blood glucose level when a diabetes mode, or any other mode that tracks blood glucose level, has been selected. Depending on the selected mode, the information requested in block 1040 may vary. For example, calibration information regarding a blood pressure sensor may be requested in order to properly calibrate a blood pressure sensor from which the receiver receives data.
In block 1050, the receiver initiates tracking of the indicated sensor data and monitoring of the indicated alerts according to the default levels that were displayed to the user during the setup routine, or using user-defined levels that were received by the user during the setup routine. The receiver may then display the current sensor readings on the receiver according to the determine default and/or user preferences. The initial display on the receiver may vary from one embodiment to another.
Proximity or Accelerometer Sensor
The screen size of the receiver's display may limit the amount of historical glucose data that may be shown on the display at one time. For example, glucose data indicating a trend in glucose level changes over a specified time period may include trend data for a span of several months; however, the receiver may show one week of data on the display at one time. To allow a user another method for changing the time period displayed on the receiver (e.g., which seven days of data are displayed), a sensor may be included within the receiver which provides data about the receiver's relative position in space. For example, a gyroscope, proximity sensor, velocity sensor, accelerometer, or the like may be included within the receiver to provide position data. Data from the sensor allows the receiver to detect the movement of the receiver as controlled by the user and may be used to change the data range displayed on the receiver based on how the user physically moves the device. For example, the display may show a portion of a glucose trend data set which depends on the relative position of the receiver in space. By holding the receiver in the air, the user may move the receiver to the left to go back in time, or the user may move the receiver to the right to move forward in time. Thus, using receiver position input may allow a user to “scroll” through trend data as a user moves the device. The receiver may also include a “lock” button in order to lock the data displayed on the screen so as to allow movement of the receiver without changing the current data range on the display.
A user may wish to view and respond to glucose data using multiple remote viewers. Preserving data integrity when transmitting and receiving glucose data may be important to ensure that a user makes correct therapeutic decisions based on accurately transmitted glucose values. For example, a glucose value of 398 mg/dl may be transmitted by a base station to a remote viewer as string of numbers “398.” As the string is transmitted, there is a possibility that, for example, the “3” character would be dropped. In this case, the remote viewer may simply display “98 mg/dL” which may create a significant medical risk that a user will respond to the incorrect value in a way that would be harmful. To avoid displaying incorrect glucose values in such a scenario, a validated transmitting device may instead send a screen shot or image of the glucose data. For example, the glucose data may be sent as a low resolution image, a compressed image or a data format such as a jpg, pdf, png or the like. In this manner, the risk of displaying an incorrect value invoking a harmful therapeutic decision is reduced.
Current Time Display
As shown in
A variety of mobile communication devices, such as a cell phones, may be configured as primary or secondary devices for viewing glucose data. On some such devices, a user performs a series of operations before glucose data is displayed such as activating or “waking” a device, unlocking a device, logging in using a passcode, and browsing for and launching an application. This may reduce the device's ease of use for providing glucose information which is easily accessible to users.
To allow glucose data to be more easily accessible, glucose information may be displayed on a background display for a device and the glucose information may be continually updated by an application running in the background.
Continuous Alert Profiles
Under certain circumstances, a user may miss an alarm and may need to be warned several times of a hypoglycemic glucose condition. A profile may be provided, that when chosen by a user, repeatedly alerts a user of a hypoglycemic condition until either the user acknowledges the alert, or the estimated glucose value reaches a safe range. This profile may be applied to several different types of alarms, such as for example, a fixed low alarm.
Alarm Tune Generation
An alert system may use several different alarm tunes, or musical tone sequences, to aid a user in distinguishing between different alarms. When individual alarm tunes are stored as separate media files, such as a way audio file, a large amount of the receiver's memory is consumed. For example, storing a thirty second sound file, corresponding to one alarm tune could require one megabyte of memory. Alternatively, rather than storing individual alarm tunes as separate media files, individual alarm tunes may be generated at the time they are needed by using a small set of tones stored in memory. In another embodiment, the tones themselves may be generated at the time an alarm is triggered without a need to store tones in memory. As a result, only a small portion of memory (e.g., flash memory) is used for storing alarm tunes, and at any time, only one alarm tune currently being played may needed to be stored in active memory (e.g., SDRAM). In addition, a large variety of different alarm tunes may be generated without requiring each separate alarm tune to be stored individually.
As described herein, continuous glucose monitor systems gather and display glucose information in real time to users and a receiver may display current glucose information, trend arrows and trend graphs. A receiver may also have a series of alarms which are triggered when a glucose value goes above or below preset alarm limits. Predictive algorithms may also be provided which use historical glucose data to predict a future glucose value such as what a glucose value might be in ten, thirty, or sixty minutes. In response to the predicted values, alarms may be triggered according to preset alarm limits.
In many current display devices, in order to obtain both current and predicted glucose values, a user may be required to perform a series of actions to view trend graphs or glucose meters on the receiver's display, such as activating a display by pushing a button. To provide a user with an additional method for gaining information about current glucose data or a system status, an indicator light or series of indicator lights may be provided on the receiver.
An indicator light 1202 may be configured to indicate further information such as the status of a glucose sensor (e.g., either functioning or blanketed data), a status of a glucose value when a receiver is in silent mode (e.g., as an alternative to providing an alarm), a status of a predicted glucose value, or a status of an insulin pump. In addition, an indicator light 1202 may indicate the distance between a current glucose value and a target range, or be used for indicating a hypoglycemia condition versus a hyperglycemia condition. An indicator light 1202 may indicate different types of information by using multiple colors, by using blinking lights, by varying light intensity, or by combining a series of indicator lights whose illuminated length communicates certain information. The indicator lights 1202, 1204, 1206 may be light emitting diodes (LEDs) for example. Indicator lights 1202, 1204, 1206 may be placed on the edge or side of the receiver to allow a light to be easily observed. For example, an indicator may be placed so that it may be observed when the receiver is placed on any surface or if the receiver is pulled partially out of a pocket, such as on the top of the side of the device. At least one benefit provided by using indicator lights as described includes providing an additional method for gaining information about a glucose and/or sensor status without requiring the user to view information shown on a display. Indicator lights may be placed on receivers such as cell phones, insulin pumps, transmitters, automobile displays, computers, or any other electronic device.
Light indicators may also be placed in various locations to aid a user to quickly be able to determine the status of a current glucose level or a trend in glucose data. The light indicators and a housing may be connected wirelessly to a primary receiver. For example, a small device may be provided which includes an LED light, a wireless receiver, and a battery along with a housing. This device may be placed, for example, on the edge of a computer, a rear view mirror of a car, or on the edge of a television using adhesive or other attaching means.
In another embodiment, a light indicator may be embedded within a sensor/transmitter that is worn on a persons' body.
Differentiated Display of Glucose Units
When displaying glucose values, different units may be used depending on the source of the glucose information or the type of device that is being used to display the information. For example, glucose units may be displayed as milligrams per deciliter (mg/dl) or millimoles per liter (mmol/l) depending on whether the device is a receiver, an insulin pump, an integrated pump/receiver device, or a glucose meter. To prevent user confusion between different glucose units, the graphical representation of the digits may be configured to allow differentiation between different units. For example, when representing a value using mmol/l units, decimal digits may be reduced in size as compared to the integer digits. This is shown for example, in
Icons for Displaying Real-Time Data
Receivers may use various icons to indicate and display glucose levels. For example, when a low alarm is triggered, a “low glucose” icon may be displayed on the receiver. To allow a user to receive additional information about glucose levels, the icon displayed may additionally provide alert symbols and/or real-time data. For example, a “low-glucose” icon may include an arrow pointing down along with the actual glucose level from a sensor. Other alert symbols or data may also be included.
Automatic Adjustment of Display Settings to Attract User Attention
As a user's real time glucose levels increase or decrease, the cognition or awareness of a user may decrease. The receiver may be configured to automatically adjust receiver display settings or adjust how information is displayed in order to attract greater attention to the receiver from the user as glucose levels become increasingly high or low. For example, the receiver may automatically adjust the screen contrast so that it progressively increases as glucose levels rise or fall. The receiver may also increase the color saturation to attract greater attention. Font sizes or shapes may also be adjusted to be more pronounced, for example by increasing font size or by applying a bold-face to displayed text. Furthermore, the receiver screen may be configured to blink in order to attract further attention, for example, when glucose levels reach extremes. As one example, a person's normal glucose level may be 120 mg/dl while a high glucose threshold for the person may be 200 mg/dl. When the person's glucose level is at the normal level, the screen contrast may be set at 50% and all fonts sizes may be normal. As glucose levels for the person increases, the intensity of the backlight may progressively increase to become brighter, the contrast may be increased such that trend graphs go from grey to black, and color may be displayed more vibrantly. Additionally, font sizes may be increased. When the person's glucose level reaches the high level of 200 mg/dl, the screen backlight may start to blink on and off to further attract a user's attention. Similar adjustments may automatically be made as the user's glucose level reaches a low glucose threshold.
In another embodiment, alarm volumes may be automatically adjusted to attract greater attention to the receiver from the user as glucose levels become increasingly high or low. For example, as a glucose level becomes progressively lower, an alarm's volume might be automatically adjusted to become progressively louder. In addition, a louder alarm may be more effective at lower glucose levels than at higher glucose levels. As a result, in another embodiment, the alarm value may be increased as a glucose level falls, but not be increased as a glucose level rises. As one example, if a person's glucose levels are normal, an alarm (or alert) volume may be set at 50% of the potential volume. As the person's glucose level falls, the alarm volume might be progressively increased until the user reaches a low level threshold, at which point the alarm or alert would be played at 100% of the potential volume. As glucose levels fall below the low threshold, the volume may be continued to be played at 100% of the potential volume. Furthermore, as the person's glucose level rises, the alarm volume might also be progressively increased until the user reaches a high level threshold, at which point an alarm or alert may be played at 100% of the potential volume.
Emergency Response Instructions
Under certain circumstances, a person with extremely low glucose levels may lose consciousness. A device may be configured to determine that a user may have lost consciousness and that the user would need further assistance from others. For example, when a receiver detects that a glucose level is below a determined value (e.g., below 60 mg/dl), and that the user has not responded to an alarm (e.g., no button has been pressed for 10 minutes), the receiver may determine that a user may have lost consciousness. Other sensors or indicator could be used to confirm this indication, for example, an accelerometer (e.g., indicating no movement), a sweat indicator, a temperature sensor, a heart rate monitor, or the like. In this event, a device may switch to a mode that triggers an alarm type used to alert others of the user's medical condition. In one aspect, this mode may be described as an emergency response instruction mode. In this mode, an alarm may be changed to a voice that calls for help. For example, the alarm type may be a voice that says “Call 911. Help. Press a button for more information.” The alarm may be repeated until another person (e.g., a bystander) pushes a button. After a button is pushed, the device may further instruct the bystander to aid the unconscious person by instructing the user to look for a glucogon shot in the patient's belongings. The device may also indicate to the bystander what information to communicate to an emergency response operator. This information may include the current glucose level and the time the glucose level fell below a determined threshold.
Computer Peripheral Device
The receiver may additionally be configured to be connected to another computing device and be recognized as a peripheral device. The receiver may be configured such that it implements a standard input/output interface such that the computer recognizes the receiver as a standard input/output device. For example, a receiver may be configured to be recognized as a webcam. By using a standard input/output interface, glucose data and other information may be shared with the computer and other networks using existing applications and without further modification or defining a custom input/output interface. Glucose information could be shared using existing or future applications such as with Skype (e.g., through a screen sharing feature), WebEx, GoToMeeting, iChat, or any other application configured to use a peripheral device such as a webcam. As one example, a user may have a consultation with a medical professional online. The user may start a video conversation, for example, with the medical professional and may wish to share glucose information during the course of the consultation. To share the glucose information, the user would connect the glucose receiver device to the computer via a connection cable. Because the computer would recognize the receiver as a webcam device, the user would be able to select the receiver device as the current video output device and the glucose data displayed on the receiver screen is shared with the medical professional.
As described above, a receiver may include a touch screen for receiving touch input. Touch input from the user may be used to determine what type of information is displayed by the receiver. For example, if a user swipes a finger across the top and down the side of the touchscreen, the receiver might be configured to display the current glucose value and/or output the current glucose value audibly. In another example, a user may simply tap the screen to display the current glucose value. Different touchscreen gestures might be defined to display the current glucose value, a current trend in glucose data, a trend for the last thirty minutes, a trend for the last sixty minutes, or a trend for the last ninety minutes.
In another embodiment, the receiver might respond to a user touchscreen gesture without using a visual display, but instead use vibrations to communicate glucose information. For example, to communicate a specific glucose reading, a series of short vibrations may be used to communicate each digit, while a longer vibration may signify a change in the digits. As one example, to communicate 135 mg/dL, the following vibrations might take place:
1 short vibration followed by 1 long vibration
3 short vibrations followed by 1 long vibration
5 short vibrations followed by 1 long vibration
In addition to communicating single numbers, a vibration length may also communicate glucose trends or rises and falls in glucose levels. For example, an increasing glucose may be communicated by outputting a series of vibrations with increased length. Conversely, falling glucose may be communicated by having a series of decreasing length vibrations. Using touchscreen gestures and/or vibrations may aid a user in understanding glucose information without looking at the receiver display or for communicating glucose information to the visually impaired.SUMMARY
All of the processes described above may be embodied in, and fully automated via, software code modules executed by one or more general computing devices, including mobile computing devices. The code modules may be stored in any type of computer-readable medium or other computer storage device. Some of all of the methods may alternatively be embodied in specialized computer hardware. In addition, the components referred to herein may be implemented in hardware, software, firmware, or a combination thereof.
Any process descriptions, elements, or blocks in the flow diagrams described herein and/or depicted in the attached figures should be understood as potentially representing modules, segments, or portions of code that include one or more executable instruction for implementing specific logical functions or steps in the process. Alternate implementations are included within the scope of the embodiments described herein in which elements or functions may be deleted, executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those skilled in the art.
The software, data, and/or components described above may be stored on a computer readable medium and loaded into memory of a computer device including downloading, using a drive mechanism associated with a computer readable medium that stores the data, such as a flash drive, CD-ROM, DVD-ROM, network interface or the like. Further, the component and/or data can be included in a single device or distributed in any manner.
The foregoing description details certain embodiments of the invention. It will be appreciated, however, that no matter how detailed the foregoing appears in text, the invention can be practiced in many ways. As is also stated above, it should be noted that the use of particular terminology when describing certain features or aspects of the invention should not be taken to imply that the terminology is being re-defined herein to be restricted to including any specific characteristics of the features or aspects of the invention with which that terminology is associated.
It is understood that any specific order or hierarchy of steps in any disclosed process is an example of a sample approach. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged while remaining within the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy presented.
Various modifications to the implementations described in this disclosure may be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other implementations without departing from the spirit or scope of this disclosure. Thus, the disclosure is not intended to be limited to the implementations shown herein, but is to be accorded the widest scope consistent with the claims, the principles and the novel features disclosed herein. The word “exemplary” is used exclusively herein to mean “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other implementations.
Certain features that are described in this specification in the context of separate implementations also can be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation also can be implemented in multiple implementations separately or in any suitable sub-combination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a sub-combination or variation of a sub-combination.
Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Moreover, the separation of various system components in the implementations described above should not be understood as requiring such separation in all implementations, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products. Additionally, other implementations are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results.
1. A glucose monitoring system comprising:
- a display device configured to receive displayable sensor information from a sensor electronics module physically connected to a continuous analyte sensor, wherein the display device comprises: a storage device configured to store at least some of the displayable sensor information; a display; and at least one input device; wherein the display device is configured to detect movement of or along the at least one input device, wherein the display device is configured to change a glucose data output parameter in response to the detected movement, and wherein the display device is configured to update an output of glucose data using the changed glucose data output parameter.
2. The glucose monitoring system of claim 1, wherein the at least one input device comprises a touchscreen.
3. The glucose monitoring system of claim 1, wherein the at least one input device comprises a circular touch sensitive input device.
4. The glucose monitoring system of claim 1, wherein the display device is configured to display a glucose chart displaying glucose information for a period of time.
5. The glucose monitoring system of claim 4, wherein the glucose data output parameter comprises the period of time for which glucose information is displayed.
6. The glucose monitoring system of claim 4, wherein the glucose chart is configured to display an estimate of a future glucose value.
7. The glucose monitoring system of claim 4, wherein the glucose data output parameter comprises a zoom level, and wherein the display device is configured to display the glucose chart according to the zoom level.
8. The glucose monitoring system of claim 7, wherein the at least one input device comprises a touchscreen input device, and wherein the detected movement comprises a user touch movement input received by the touchscreen input device.
9. The glucose monitoring system of claim 1, wherein the display device is configured to display a trend indicator showing a current trend in the direction of a glucose level for a period of time.
10. The glucose monitoring system of claim 9, wherein the trend indicator is configured to be displayed as at least one of a different color, font, or font formatting according to the status of the trend indicator.
11. The glucose monitoring system of claim 1, wherein the display device is configured to display a glucose chart showing glucose information for a period of time along with a glucose change trend indicator.
12. The glucose monitoring system of claim 1, wherein the display device is configured to display a glucose chart showing glucose information over a first time period along with a glucose chart displaying glucose information over a second time period, wherein the second time period is longer than the first time period.
13. The glucose monitoring system of claim 1, wherein the display device is configured to display a glucose change trend indicator indicating glucose information for a first time period along with a glucose chart showing glucose information for a second time period.
14. The glucose monitoring system of claim 1, wherein the display device is configured to display a navigation bar showing glucose information for a first time period along with a glucose chart showing glucose information for a second time period, wherein the first time period is greater than the second time period.
15. The glucose monitoring system of claim 14, wherein the detected movement corresponds to a movement of the navigation bar, and wherein the second time period is changed in response to the position of the navigation bar.
16. The glucose monitoring system of claim 1, wherein the display device is configured display glucose data according to an operation mode, wherein display device is configured to receive a selection of the operation mode from a user.
17. The glucose monitoring system of claim 16, wherein the display device is further configured to determine if one or more sets of alert conditions are satisfied by sensor data, and wherein the type of alert associated with the alert conditions depends on the selected operation mode.
18. The glucose monitoring system of claim 1, wherein the at least one input device comprises a movement sensor configured to detect a physical movement of the display device, and wherein the glucose data output parameter comprises a data range for displaying glucose information, wherein the data range is changed when the movement sensor determines that the display has been physically moved.
19. The glucose monitoring system of claim 1, wherein the display device is further configured to transmit a glucose value to a second display device, wherein the display device is configured to transmit image data corresponding to the glucose value.
20. The glucose monitoring system of claim 1, wherein the display device is configured to display a current time value on a glucose chart showing glucose information for a period of time, wherein the glucose chart comprises a time axis, wherein the current time value is displayed at the end of the time axis.
Filed: Nov 16, 2020
Publication Date: Mar 11, 2021
Inventors: Eric Johnson (San Marcos, CA), Michael Robert Mensinger (San Diego, CA), Peter C. Simpson (Cardiff, CA), Thomas Hall (San Diego, CA), Hari Hampapuram (Portland, OR), Kostyantyn Snisarenko (San Diego, CA), Eli Reihman (San Diego, CA), Holly Chico (San Diego, CA), Kassandra Constantine (San Diego, CA)
Application Number: 17/099,022