Source: https://patents.google.com/patent/US9786024B2/en
Timestamp: 2019-07-19 23:06:31
Document Index: 245819460

Matched Legal Cases: ['art 100', 'art 200', 'art 200', 'art 300', 'art 300', 'art 400', 'art 500', 'art 500']

US9786024B2 - Graphical user interface for a handheld diabetes management device with bolus calculator - Google Patents
Graphical user interface for a handheld diabetes management device with bolus calculator Download PDF
US9786024B2
US9786024B2 US13/593,593 US201213593593A US9786024B2 US 9786024 B2 US9786024 B2 US 9786024B2 US 201213593593 A US201213593593 A US 201213593593A US 9786024 B2 US9786024 B2 US 9786024B2
US13/593,593
US20140058749A1 (en
Paul J. Galley
Alan M. Greenburg
2010-12-22 Priority to US12/976,507 priority Critical patent/US8615366B2/en
2012-08-24 Application filed by Roche Diabetes Care Inc filed Critical Roche Diabetes Care Inc
2012-08-24 Priority to US13/593,593 priority patent/US9786024B2/en
2012-08-27 Assigned to ROCHE DIAGNOSTICS OPERATIONS, INC. reassignment ROCHE DIAGNOSTICS OPERATIONS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GALE FORCE SOFTWARE CORPORATION
2012-08-27 Assigned to GALE FORCE SOFTWARE CORPORATION reassignment GALE FORCE SOFTWARE CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PARKER, MARSHALL M.
2012-08-27 Assigned to ROCHE DIAGNOSTICS OPERATIONS, INC. reassignment ROCHE DIAGNOSTICS OPERATIONS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WAGNER, ROBIN S., PRICE, JOHN F., GALLEY, PAUL J., GREENBURG, ALAN M., WILSON, RICHARD W.
2013-08-21 Priority claimed from ES13750591T external-priority patent/ES2710250T3/en
2014-02-27 Publication of US20140058749A1 publication Critical patent/US20140058749A1/en
2017-10-10 Publication of US9786024B2 publication Critical patent/US9786024B2/en
According to some aspects of the present disclosure a method for presenting a GUI for modifying medical data on a handheld medical device is disclosed. The method includes determining a correction bolus amount and a meal bolus amount for the patient. The method also includes presenting the GUI on a display of the medical device and presenting the correction bolus amount, the meal bolus amount and a total bolus amount in the GUI. The method also includes presenting a correction bolus amount modification field and a meal bolus amount field in the GUI. The correction bolus amount modification field and the meal bolus amount modification field allow the patient to provide input to modify the correction bolus amount and meal bolus amount, respectively. The method further includes receiving the input and generating an advice history record based on the input.
This application is a continuation-in-part of U.S. Ser. No. 12/976507 filed Dec. 22, 2010. The disclosure of the above application is incorporated herein by reference.
This disclosure relates to diabetes care medical devices used for diagnostics and therapy, and more particularly to a graphical user interface of a handheld diabetes management device incorporating medical data determined by a bolus calculator or provided by a patient.
Management of diabetes is complex as the level of blood glucose entering the bloodstream is dynamic. The variation of insulin that controls the transport of glucose out of the bloodstream also complicates diabetes management. Blood glucose levels are sensitive to diet and exercise, but also can be affected by sleep, stress, smoking, travel, illness, menses, and other psychological and lifestyle factors unique to individual patients. The dynamic nature of blood glucose and insulin, and all other factors affecting blood glucose, often require a person with diabetes to understand ongoing patterns and forecast blood glucose levels (or at least understand the actions that raise or lower glucose in the body). Therefore, therapy in the form of insulin or oral medications, or both, can be timed to maintain blood glucose levels in an appropriate range.
Management of diabetes is often highly intrusive because of the need to consistently obtain reliable diagnostic information, follow prescribed therapy, and manage lifestyle on a daily basis. Daily diagnostic information, such as blood glucose, is typically obtained from a capillary blood sample with a lancing device and is then measured with a handheld blood glucose meter. Interstitial glucose levels may be obtained from a continuous glucose sensor worn on the body. Prescribed therapies may include insulin, oral medications, or both. Insulin can be delivered with a syringe, an insulin pen, an ambulatory infusion pump, or a combination of such devices. With insulin therapy, determining the amount of insulin to be injected can require forecasting meal composition of carbohydrates, fat and proteins along with effects of exercise or other physiologic states. The management of lifestyle factors such as body weight, diet, and exercise can significantly influence the type and effectiveness of a therapy.
Management of diabetes involves large amounts of diagnostic data and prescriptive data that are acquired from medical devices, personal healthcare devices, patient recorded information, healthcare professional tests results, prescribed medications and recorded information. Medical devices including self-monitoring bG meters, continuous glucose monitors, ambulatory insulin infusion pumps, diabetes analysis software, and diabetes device configuration software each of which generates or manages or both large amounts of diagnostic and prescriptive data. Personal healthcare devices include weight scales, pedometers and blood pressure cuffs. Patient recorded information includes information relating to meals, exercise and lifestyle as well as prescription and non-prescription medications. Healthcare professional biomarker data includes HbA1C, fasting glucose, cholesterol, triglycerides and glucose tolerance. Healthcare professional recorded information includes therapy and other information relating to the patient's treatment.
There is a need for a handheld patient device to aggregate, manipulate, manage, present, and communicate diagnostic data and prescriptive data from medical devices, personal healthcare devices, patient recorded information, biomarker information and recorded information in an efficient manner to improve the care and health of a person with diabetes, so the person with diabetes can lead a full life and reduce the risk of complications from diabetes.
Additionally, patients and physicians alike may benefit from the ability to track the patient's adherence to a treatment regimen. As the treatment of diabetes can be a full time task, the amount of data relating to the treatment of diabetes may be voluminous. Thus, there is a need for an efficient means for presenting data relating to the treatment of diabetes that allows the patient or physician to identify treatment trends of the patient.
Moreover, during treatment more knowledgeable patients may wish to modify or override treatment recommendations. Thus, there is a need for a more effective means for a patient to modify treatment recommendations.
According to some aspects of the present disclosure a method for presenting a graphical user interface for modifying medical data on a handheld diabetes management device is disclosed. The method includes determining a correction bolus amount value for the patient, the correction bolus amount value being indicative of a first amount of insulin to recommend to a patient to lower an elevated blood glucose level. The method further includes determining a meal bolus amount value, the meal bolus amount value being indicative of a second amount of insulin to recommend to a patient to counteract a carbohydrate intake documented by the patient. The method also includes presenting the graphical user interface (GUI) on a display of the medical device, presenting the correction bolus amount value in the GUI, presenting the meal bolus amount value in the GUI, and presenting a total bolus amount value, the total bolus amount value being equal to a sum of the correction bolus amount value and the meal bolus amount value. The method further includes presenting a correction bolus amount modification field in the GUI, the correction bolus amount modification field allowing a patient to provide first input that modifies the correction bolus amount value. The method also includes presenting a meal bolus amount modification field in the GUI, the meal bolus amount modification field allowing the patient to provide second input that modifies the meal bolus amount value. The method further includes receiving at least one of the first input and the second input and generating an advice history record based on the at least one of the first input and the second input, the advice history record including at least one of a first indicator indicating that the correction bolus amount value was modified by the patient and a second indicator indicating that the meal bolus amount was modified by the patient. The method further includes storing the advice history record on a computer-readable memory of the medical device.
According to some embodiments of the present disclosure, the correction bolus amount is presented in the correction bolus amount modification field.
In some embodiments the method further includes receiving a selection of the correction bolus amount modification field, receiving an instruction to either increment or decrement the correction bolus amount by a predetermined value, wherein the instruction is the first input, adjusting the correction bolus amount value based on the instruction, and presenting the adjusted correction bolus amount value in the correction bolus amount modification field in place of the correction bolus amount value.
In some embodiments the method further includes adjusting the total amount bolus value based on the adjusted correction bolus amount value and presenting the adjusted total amount bolus value in place of the total amount bolus value.
According to some embodiments of the present disclosure, the meal bolus amount is presented in the meal bolus amount modification field.
In some embodiments the method further includes receiving a selection of the meal bolus amount modification field, receiving an instruction to either increment or decrement the meal bolus amount by a predetermined value, wherein the instruction is the second input, adjusting the meal bolus amount based on the instruction, and presenting the adjusted meal bolus amount value in the meal bolus amount modification field in place of the meal bolus amount value.
In some embodiments the method further includes adjusting the total amount bolus value based on the adjusted meal bolus amount value and presenting the adjusted total amount bolus value in place of the total amount bolus value.
According to some embodiments of the present disclosure, the correction bolus amount is presented in the correction bolus amount modification field and the meal bolus amount is presented in the meal bolus amount modification field.
In some embodiments the method further includes receiving a first selection of the correction bolus amount modification field, receiving a first instruction to either increment or decrement the correction bolus amount by a predetermined value, wherein the first instruction is the first input, adjusting the correction bolus amount value based on the first instruction, presenting the adjusted correction bolus amount value in the correction bolus amount modification field in place of the correction bolus amount value, receiving a second selection of the meal bolus amount modification field, receiving a second instruction to either increment or decrement the meal bolus amount by the predetermined value, wherein the second instruction is the second input, adjusting the meal bolus amount based on the instruction, and presenting the adjusted meal bolus amount value in the meal bolus amount modification field in place of the meal bolus amount value.
In some embodiments the method further includes adjusting the total amount bolus value based on the adjusted meal bolus amount value and the adjusted correction bolus amount value and presenting the adjusted total amount bolus value in place of the total amount bolus value.
According to some embodiments of the present disclosure a handheld diabetes management device having one or more processors and a computer readable medium storing computer readable instructions is disclosed. The computer readable instructions, when executed by the one or more processors, cause the handheld diabetes management device to perform operations including determining a correction bolus amount value for the patient, the correction bolus amount value being indicative of a first amount of insulin to recommend to a patient to lower an elevated blood glucose level. The operations further include determining a meal bolus amount value, the meal bolus amount value being indicative of a second amount of insulin to recommend to a patient to counteract a carbohydrate intake documented by the patient. The operations also include presenting a graphical user interface (GUI) on a display of the medical device, presenting the correction bolus amount value in the GUI, presenting the meal bolus amount value in the GUI, presenting a total bolus amount value, the total bolus amount value being equal to a sum of the correction bolus amount value and the meal bolus amount value, and presenting a correction bolus amount modification field in the GUI, the correction bolus amount modification field allowing a patient to provide first input that modifies the correction bolus amount value. The operations further include presenting a meal bolus amount modification field in the GUI, the meal bolus amount modification field allowing the patient to provide second input that modifies the meal bolus amount value. The operations also include receiving at least one of the first input and the second input, generating an advice history record based on the at least one of the first input and the second input, the advice history record including at least one of a first indicator indicating that the correction bolus amount value was modified by the patient and a second indicator indicating that the meal bolus amount was modified by the patient. The operations further include storing the advice history record on a computer-readable memory of the medical device.
In some embodiments the operations further include receiving a selection of the correction bolus amount modification field, receiving an instruction to either increment or decrement the correction bolus amount by a predetermined value, wherein the instruction is the first input, adjusting the correction bolus amount value based on the instruction, and presenting the adjusted correction bolus amount value in the correction bolus amount modification field in place of the correction bolus amount value.
In some embodiments the operations further include adjusting the total amount bolus value based on the adjusted correction bolus amount value and presenting the adjusted total amount bolus value in place of the total amount bolus value.
In some embodiments the operations further include receiving a selection of the meal bolus amount modification field, receiving an instruction to either increment or decrement the meal bolus amount by a predetermined value, wherein the instruction is the second input, adjusting the meal bolus amount based on the instruction, and presenting the adjusted meal bolus amount value in the meal bolus amount modification field in place of the meal bolus amount value.
In some embodiments the operations further include adjusting the total amount bolus value based on the adjusted meal bolus amount value and presenting the adjusted total amount bolus value in place of the total amount bolus value.
According to some embodiments of the present disclosure, a method for displaying medical data related to treatment of diabetes of a patient is disclosed. The method includes receiving, at one or more processors, the medical data. The method further includes determining, at the one or more processors, whether the medical data is one of a treatment recommendation determined by the diabetes management device that has been verified as being followed, a treatment recommendation determined by the diabetes management device that has been verified as not being followed, c) treatment data manually entered by the patient to the diabetes management device without a treatment recommendation. The method further includes displaying, by the one or more processors, the medical data with a first visual indicator when the medical data is the treatment recommendation determined by the diabetes management device that has been verified as being followed. The method further includes displaying, by the one or more processors, the medical data with a second visual indicator when the medical data is the treatment recommendation determined by the diabetes management device that has been verified as not being followed. The method also includes displaying, by the one or more processors, the medical data with a third visual indicator when the medical data is the treatment data manually entered by the patient to the diabetes management device without a treatment recommendation.
According to some embodiments of the present disclosure, the medical data is displayed at one of a handheld diabetes management device and a computing device remote to the diabetes management device.
The following figures are selected embodiments of the handheld diabetes manager with enhanced data capability and related system embodiments and information.
FIG. 1 is a perspective view of one embodiment of a handheld diabetes bG management device in accordance with the present disclosure;
FIG. 2 is a high level block diagram of various components and subsystems that may be incorporated in the device shown in FIG. 1;
FIG. 3A is an exemplary flowchart illustrating a preliminary configuration procedure for configuring the device shown in FIG. 1;
FIG. 3B is a drawing illustrating an example screen for enabling a user to program in various health events to be considered by the device when providing bolus recommendations;
FIG. 3C is an illustration showing how the display of the device may display the various programmed health event options after same are programmed into the device;
FIG. 3D is a drawing of an exemplary layout that may be presented on the display of the device for allowing the user to enter text that describes the health event being programmed, along with the percentage adjustment to be made to the health event;
FIG. 3E is an illustration showing how the display of the device may display a message to the user if the user has selected more than one health event, and allows the user to enter a custom health adjustment percentage to be applied to a bolus calculation;
FIG. 3F is a drawing showing an exemplary layout of how various items of information may be presented to the user on the display of the device;
FIGS. 4A and 4B represent an exemplary flowchart illustrating operations that can be performed in computing a total bolus using user defined health adjustment percentages by which the computed meal bolus and computed correction bolus can be modified (by the user) before calculating a recommended total bolus;
FIG. 5 is an exemplary flowchart illustrating operations that can be performed by the device of FIG. 1 in calculating a carbohydrate suggestion for the user;
FIG. 6 is a flowchart illustrating exemplary operation performed by the device of FIG. 1 in computing the recommended meal bolus with a user programmed health adjustment applied thereto;
FIG. 7 is a flowchart illustrating exemplary operations that can be performed in computing a recommended correction bolus with a health adjustment percentage set by the user;
FIG. 8 is a flowchart illustrating exemplary operations that can be performed by the device of FIG. 1 in computing a currently allowed bG value;
FIG. 9 is a flowchart illustrating exemplary operations that can be performed by the device of FIG. 1 in computing a correction delta bG value;
FIG. 10 is a flowchart illustrating exemplary operations that can be performed by the device of FIG. 1 in computing a correction meal rise value;
FIGS. 11A and 11B are flowcharts illustrating exemplary operations that can be performed by the device of FIG. 1 in computing a working delta bG value based on an insulin history of the patient;
FIG. 12 is a flowchart illustrating exemplary operations that can be performed by the device of FIG. 1 in computing a working delta bG value based on a carbohydrate history of the patient;
FIGS. 13A and 13B are drawings illustrating an example of a lag time being incorporated to an action shape;
FIG. 14 is a block diagram illustrating exemplary components of an insulin pump;
FIG. 15 is a flow chart illustrating an exemplary method for operating an insulin pump;
FIG. 16 is a flow chart illustrating an exemplary method for determining an amount of insulin to deliver in an initial dose of a multiwave bolus;
FIG. 17 is a drawing illustrating an exemplary graphical user interface for adjusting a meal bolus amount value and a correction bolus amount value;
FIG. 18 is a flow chart illustrating an exemplary method for adjusting a recommended meal bolus amount value and/or a recommended correction bolus amount value;
FIG. 19 is a drawing illustrating an exemplary graphical user interface for displaying medical data on a diabetes management device; and
FIG. 20 is a drawing illustrating an exemplar graphical user interface for displaying medical data on a remote diabetes management device.
Referring to FIG. 1, there is shown a high level drawing of one embodiment of a handheld, diabetes management device 10 that may be used in measuring the blood glucose (bG) of a patient and implementing a bolus calculation or carbohydrate suggestion. Typically the device 10 includes a housing 12 that may contain user unit control switches 14 (e.g., ON/OFF), a touchscreen display 16, and a port 18 into which a bG test strip 20 may be inserted. The display 16 may display user selectable options for allowing the user to access a software driven menu 16 a of various selections, a selection 16 b for allowing the user to enter bolus information, a selection 16 c for enabling the user to enter carbohydrate information for snacks or meals, and a selection 16 d for allowing the user to enter information pertaining to health events (e.g., meals, exercise, periods of stress, periodic physiological events such as a menstrual cycle, etc.) that may affect the user's bG measurement being read by the device 10. Although the display 16 will be described herein as a touchscreen display, it will be appreciated that any other suitable form of display may be incorporated (e.g., LED, etc.). If a touchscreen display is not used, the user control switches 14 may need to include specific buttons or controls by which the user is able to select various options and input markers needed to carry out the bolus calculation or carbohydrate suggestion. It will be appreciated that the above is a high level description of the device 10, and in practice the device may include additional controls, input ports, output ports, etc., as may be desired to even further enhance the utility of the device 10 or its use with other components and devices (e.g., laptop computers, infusion pumps, etc.). Accordingly, the above description of the device 10 should not be taken as limiting its construction or features in any way.
Referring to FIG. 2, a high level block diagram of the device 10 is shown. The device 10 can include a rechargeable or non-rechargeable battery 21 for powering the various electronic components of the device 10. A processing subsystem 22 (e.g., a microprocessor based subsystem) is included that receives information from a bG analyzer 24. The bG analyzer 24 is located adjacent the port 18 of the housing 12 to permit the bG analyzer 24 to read the bG test strip 20. The bG analyzer 24 can include a code key 24 a that includes calibration information for the bG test strip 20 being read. The processing subsystem 22 can also be in communication with a database 26 that is used to store bG test values obtained from the bG analyzer 24 and other important health related information for the user. In particular, the database 26 can include a subsection 26 a for storing recommended bolus and carbohydrate advice history records (hereinafter “advice history records”) that are still active in their influence of current and future advice, and a section 26 b for storing medication (insulin), health, carbohydrate and bG related variables (e.g., insulin sensitivities of the user for various time segments of the day) pertinent to the user. It will be appreciated that the database 26 will be formed by a non-volatile memory. Further, the bG related variables such as the insulin sensitivities of the user can be stored as global parameters and may not be in the advice history records.
The processing subsystem 22 can also be in communication with the display 16, the user control switches 14, and one or more interfaces 28 for interfacing the device 10 to other external devices. The processing subsystem 22 can also be in communication with a memory (such as a RAM) 30 for storing various types of information (e.g., meal and bed times) that are input by the user, as well as any other information requiring temporary or permanent storage. However, it will be appreciated that the database 26 and the memory 30 could be implemented in a single memory device (e.g., RAM) if desired, as indicated in phantom in FIG. 2. The processing subsystem 22 can be in communication with an alarm generation subsystem 32 that is used to generate an alarm consisting of audible signals, tactile signals (e.g., a vibration signal) or possibly even visual signals such as illuminated lights (e.g., LEDs) on the device 10. The processing subsystem 22 can also receive inputs from a remote continuous glucose monitoring (“CGM”) device 34 secured to the user's body such that device 10 is continually updated with glucose information for the user. Finally the processing subsystem 22 can be in communication with a remote insulin infusion pump 36 (herein referred to as an “insulin pump 36”) being worn by the user so that the device 10 is able to communicate bolus information to the insulin pump 36. By “remote” it is meant that the CGM device 34 and the insulin pump 36 are each located outside of the device 10 but otherwise still in communication with the device 10. It should be appreciated that the device 10 can communicate with the insulin pump 36 either through a wired or wireless connection.
The device 10 can be used to implement a non-transitory machine readable code, for example a bolus calculator software module 22 a (herein referred to as “bolus calculator 22 a”), that is run by the processing subsystem 22. The bolus calculator 22 a can be formed as a single module or as a collection of independent modules that run concurrently on the processing subsystem 22. The processing subsystem 22, working in connection with the bolus calculator 22 a, receives a wide variety of user inputs applied by the user through the touchscreen display 16 to generate a recommended correction bolus, a recommended meal bolus, a recommended total bolus, or when appropriate a suggested carbohydrate amount. The suggested carbohydrate amount may be provided in response to the detection by the device 10 of a hypoglycemic bG test value. The operations and capabilities of the device 10 will be explained in detail in the following paragraphs. The device 10 significantly enhances the convenience and ease of use to the user through the implementation of a plurality of customizable inputs that enable the user to program the device 10 with unique health information pertinent to the user. More specifically, the device 10 allows the user to program the device 10 with health information which even more completely enables the device 10 to take into account unique health conditions affecting the user, as well as regular occurring and non-regular occurring health events that could otherwise have an impact on the bolus and carbohydrate calculations made by the device 10.
In an example embodiment, the bolus calculator 22 a is configured to generate advice history records which are indicative of the bolus and carbohydrate calculations and bolus recommendations made by the device 10. The bolus calculator 22 a may be further configured to include data indicative of a patient's adherence or variance from the recommendations in the advice history records. In some embodiments, an advice history record can include a plurality of fields, including a time field that defines a time of the advice history record, a test flag field, a record content field indicating one or more types of events defined in the advice history record, and one or more fields defining values corresponding to the events indicated in the record content field.
In an exemplary embodiment, the advice history record includes a time field. The time field denotes a time corresponding to the advice history record. The time can include values indicating a year, a month, a day, an hour, and a minute of the advice history record. It should be appreciated that the time field can be divided into a plurality of subfields for each of the values. When a new advice history record is generated, the time at which the advice history record was generated populates the time field.
In an exemplary embodiment, the test flag field indicates results of one or more tests. The test field may include test flags corresponding to the one or more tests. As should be appreciated, a test flag can be a bit that is set to 1 if the result is true and 0 if the result is false. The test flags can include a HI test flag that indicates whether a bG concentration value is outside of an upper range of values that can be displayed by the device 10. When the HI value is set to 1, the HI test flag indicates that a bG concentration value in above the range of bG concentration values that can be displayed by the device 10. The test flags can further include a LO test flag. When the LO test flag is set to 1, the LO test flag indicates that the bG concentration value is below the range of values that can be displayed by the device 10. The test flags can also include a HYPO test flag. When the HYPO test flag is set to 1, the HYPO test flag indicates that the bG concentration value of the patient corresponds to a hypoglycemic state or is below the lower end of a target range. It is appreciated that the test field may include additional test flags.
As mentioned, the record content field indicates one or more types of events defined in the advice history record or that certain conditions relating to the events were met. The different types of events can include a blood glucose concentration, a carbohydrate amount associated with food intake of the patient, a health percentage value selected by the user, an insulin amount was recommended to the patient, a confirmation that insulin was administered to the patient, a confirmation that a bolus recommendation was accepted by the patient, an indication that a correction bolus was administered, and an indication that a meal bolus was recommended to the patient. As should be appreciated, if one or more events are indicated in the record content field of the advice history record, the corresponding fields in the advice history record are populated with values.
In an exemplary embodiment, the advice history record includes a bG concentration field. The bG concentration field is populated with a valid value when the record content field indicates that a bG concentration value has been associated with the advice history record. The bG concentration value indicates a bG concentration value from a bG measurement performed by the device 10 or was otherwise provided by the patient. It should be appreciated that the bG concentration value can be represented in mg/dL or mmol/L.
In an exemplary embodiment, the advice history record includes a carbohydrate amount field. The carbohydrate amount field is populated with a valid value when the record content field indicates that a carbohydrate amount value has been associated with the advice history record. A carbohydrate amount value is an amount of carbohydrates that a patient consumed in a recent food intake. As will be discussed in further detail below the carbohydrate amount value can be greater than or less than a “snack size” threshold. When the carbohydrate amount value is greater than the “snack size” threshold the food intake is considered a meal as opposed to a snack. The carbohydrate value can be provided by the patient via the user interface of the device 10 and can be represented in grams.
In an exemplary embodiment, the advice history record includes a health percentage amount. The health percentage amount field is populated with a valid value when the record content field indicates that one or more health percentages have been associated with the advice history record. As discussed above, the user can enter different health events, e.g., meals, exercise, periods of stress, and periodic physiological events such as a menstrual cycle. The patient or another user can provide percentages representing an amount of effect that the health event has on increasing or decreasing the bG concentration (or insulin need) of the patient.
In an exemplary embodiment, the advice history record includes a correction bolus field. The correction bolus field is populated with a valid value when the record content field indicates that a non-null correction bolus amount has been associated with the advice history record. The correction bolus amount indicates a bolus amount selected by a patient to either decrease or increase a bG concentration value. A negative bolus amount corresponds to a scenario where the patient's bG concentration is below a target bG value and a positive bolus amount corresponds to a scenario where the patient's bG concentration is above the target bG value. It is noted that in some embodiments, the correction bolus field is populated when the user overrides a correction bolus recommendation provided by the bolus calculator 22 a.
In an exemplary embodiment, the advice history record includes a meal bolus field. The meal bolus field is populated with a valid value when the record content field indicates that a non-null meal bolus amount has been associated with the advice history record. The meal bolus amount indicates a bolus amount selected by a patient to either offset the effects of a meal, e.g., carbohydrate intake. In some embodiments, the meal bolus field is populated when the user overrides a meal bolus recommendation provided by the bolus calculator 22 a.
In an exemplary embodiment, the advice history record includes a confirmed correction bolus field. The confirmed correction bolus field is populated with a valid value when the record content field indicates that a confirmed insulin amount and a non-null correction bolus amount has been associated with the advice history record. The confirmed correction bolus amount indicates a bolus amount that was delivered to the patient by an insulin pump 36 in response to a patient-saved correction bolus.
In an exemplary embodiment, the advice history record includes a confirmed meal bolus field. The confirmed meal bolus field is populated with a valid value when the record content field indicates that a confirmed insulin amount and a non-null meal bolus amount has been associated with the advice history record. The confirmed meal bolus amount indicates a bolus amount that was delivered to the patient by an insulin pump 36 in response to a patient-saved meal bolus.
It should be appreciated that the advice history record may include variations of the fields described above or alternative or additional fields. The fields of the advice history record provided are provided for example only and not intended to be limiting.
In some embodiments, the advice history record may include one or more different parameter values relating to events defined in the advice history record. For example, the advice history record may include a target value, a meal rise value, an offset time, and an acting time value. The target value is a target bG level of the patient. The target value can be represented as a function of an upper and lower limit for the patient's bG levels. The meal rise value is an amount by which the bG level of a patient may increase with respect to the target value as a result of a carbohydrate intake. In some embodiments, the meal rise value is a function of time and the administration of insulin, such that the meal rise remains constant for a first predetermined amount of time after the patient is administered insulin, i.e., offset time, and then decreases linearly after the first predetermined amount of time. The total amount of time that a dose of insulin has an effect on the bG levels of a patient is the acting time. As will be discussed later, if the meal rise value as a result of the effect of a dose of insulin is graphed, the result is referred to as an action shape. In some embodiments, the action shape is a trapezoid, such that the offset time defines the shorter base and the acting time defines the longer base. Other parameters that may be included in the advice history record may include a carb ratio value, an insulin sensitivity value, and a snack size value. The parameter values may be provided by a user such as the patient or a treating physician of the patient. The parameter values can be uploaded or provided via the touch display 16 of the device 10. The parameter values are utilized by the bolus calculator 22 a to determine bolus recommendations for the patient.
Referring to FIG. 3A, a flowchart 100 illustrates an exemplary preliminary configuration procedure that the user can perform to configure the various inputs needed to tailor the device 10 to the requirements of the user. At operation 102 the user can define the insulin type that she/he is using, as well as the “acting time” and “offset time” associated with the specified insulin. The user also sets a snack size at operation 104. Any carbohydrate amount greater than the snack size that the user enters into the device 10 will be considered as a “meal” by the device 10 if the amount exceeds the user defined snack size. A meal rise glucose amplitude (expressed in bG units) is also defined by the user at operation 105. At operation 106 the user can define the various time blocks for a twenty four hour period. In one exemplary implementation the user may define up to eight contiguous or non-contiguous time blocks during a twenty four hour period. However, it will be appreciated that a greater or lesser number of time blocks could be provided for. Since the user's insulin sensitivity will be assumed to vary over the course of the day, the user can set a different insulin sensitivity value for each time block, as indicated at operation 108. At operation 110 the user can set a carbohydrate ratio (“carb ratio”) for each time block as well, as this ratio can be assumed to vary for different users throughout the course of a day. At operation 112 the user can set a bG target range for each time block, as this range is also presumed to vary slightly over the course of a day. The bG target range is made up of an upper target bG value and a lower target bG value which define the upper and lower bounds, respectively, of the bG target range. It will also be appreciated that the processing subsystem 22 operates to consider an action shape of a previously taken correction bolus, where the action shape is defined by a bG lowering potential of the previously taken correction bolus, as well as the offset time and the acting time of the insulin associated with the previously taken correction bolus. The action shape is considered by the processing subsystem 22 when generating a new bolus recommendation, and will be discussed in greater detail below.
At operation 114 the user labels each one of up to n different health events with a label using the touchscreen display 16 and assigns a percentage bG adjustment for each labeled health event. It is a valuable feature of the device 10 that the user is able to program these various percentage adjustments for each of a plurality of user defined health events that the user knows in advance will affect her/his bG test values. For example, the user may program the device with different bG percentage adjustment values for health events such as “exercise”, “illness”, “stress”, or even for recurring conditions such as a menstrual cycle. The precise percentages selected by the user for each user defined health event can be based on past history and experience of the user or based in part on the advice of a health care professional who is helping the user to manage her/his blood glucose levels. As one example, if the user knows from experience that an exercise event performed right after a meal will reduce a needed meal bolus by about 20%, then the user may enter “−20” in a displayed field on the display 16. The processing subsystem 22 will thereafter use this 20% reduction in calculating the meal bolus and the correction bolus when the exercise event has been selected. These features will be defined in greater detail in the following paragraphs.
Referring to FIGS. 3B-3F, illustrations are presented of how the various forms of information can be displayed to the user on the display 16 of the device 10. FIG. 3B shows a screen 150 that presents multiple “Health List Item” boxes that may be displayed in the display 16 when the user has chosen to assign a specific health event to a record containing the bG test value that she/he has just obtained. FIG. 3C shows a screen display 150 a illustrating how this information can appear on the display 16. The user can select one of the boxes 152 in FIG. 3C, which will mark the just-obtained bG test value with the user programmed specific health event, and thus apply the user programmed percentage adjustment to the just-obtained bG test value. If the user selects two or more health events for a single bG test value, then the device 10 can display a different screen that forces the user to select a “custom” health event percentage that will be applied to the just-obtained bG test value. Such a screen layout 154 is shown in FIG. 3D. An actual exemplary screen display 156 is shown in FIG. 3E that corresponds to the screen layout 154. The “Health” field 158 in FIG. 3E displays all the health events that the user has checked off in boxes 152 of screen display 150 a of FIG. 3C. In field 160 the user can enter and/or adjust a custom health percentage adjustment as indicated by the presence of the arrows 162 a and 162 b. Arrows 164 a and 164 b may also be displayed, which are used to enable the user to increase or decrease a suggested bolus. User control 166 enables the user to cancel the health event adjustment and control 168 enables the user to confirm the selection (i.e., apply) of the custom health percentage in field 160. FIG. 3F illustrates how various items of information (e.g., result bG test value; carbohydrate information; health adjustment percentage; correction bolus; meal bolus; and total units of recommended bolus) can be displayed to the user on the display 16.
Referring now to FIGS. 4A and 4B, a flowchart 200 is shown of exemplary operations that can be performed by the device 10 in determining a total bolus recommendation for the user that takes into account the configuration programmed into the device 10 by the user. At operation 202 an initialization operation is performed to set the record contents of the processing subsystem 22 to “0”. At operation 204 the processing subsystem 22 obtains the most current record stored in the database 26 and checks at operation 206 to determine if it has an associated bG test value. If not, then at operation 208 the maximum allowed bG value is computed and displayed to the user. At operation 210 the processing subsystem 22 determines the current time block. At operation 212 the processing subsystem 22 checks to determine if the user has selected more than one health event option and, if the user has selected more than one option, a request is made on the display 16 for the user to enter a custom percentage value, as indicated at operation 214, that will be applied to subsequent meal bolus and correction bolus calculations. At operation 216 the processing subsystem 22 will compute the meal bolus and apply the selected health event adjustment defined by the user (if any such adjustment has been selected by the user). At operation 218 the processing subsystem 22 will compute the total bolus. At operation 220 the processing subsystem 22 will update and store the output along with the record in the database 26 at operation 222.
Referring further to FIGS. 4A and 4B, if the check at operation 206 reveals that there is a bG value associated with the most current record, then a check is made at operation 224 to see if the “HI” test flag of the record is set, indicating a bG reading that is above a display limit of the device 10, and which therefore will not be used to calculate a recommended correction bolus. If this check provides a “Yes” answer, then after the display of an appropriate warning at operation 225 for a HI bG reading, operations 208-222 may be performed to obtain only a recommendation for a meal bolus. If the check at operation 224 produces a “No” answer, then a check is made to determine if the “LO” or “HYPO” test flags are set for the most current record (Advice Record_IN), as indicated at operation 226. This is an extra check to prevent the recommendation of a bolus in either a hypoglycemic condition or with a bG reading below the display limit of the device 10. In the event of a “Yes” answer, the routine of flowchart 200 ends (and flowchart 300 shown in FIG. 5 begins for calculating a carbohydrate suggestion). If the check at operation 226 produces a “No” answer, then at operation 228 in FIG. 4B the processing subsystem 22 computes the maximum allowed bG value and displays it to the user on the display 16.
Continuing in FIG. 4B, at operation 230 the processing subsystem 22 determines the current user defined time block. At operation 232 the processing subsystem 22 checks to determine if the user has selected more than one health event option and, if the user has selected more than one option, a request is made on the display 16 for the user to enter a custom percentage value, as indicated at operation 234, that will be applied to the correction bolus calculation at operation 236. At operation 236 the processing subsystem 22 will compute the correction bolus and apply the selected health event adjustment defined by the user (if any such adjustment has been selected by the user). Operations 216-222 from FIG. 4A will then be applied. If the check at operation 232 produces a “No” answer, the operation 236 will be performed using the user set health event adjustment.
Turning to FIG. 5, a flowchart 300 is shown illustrating exemplary operations to show a carbohydrate suggestion can be calculated using the device 10 (this flow occurs based on the “Yes” path at operation 230 in FIG. 4A). At operation 302 an initialization procedure is performed to ensure that any pre-existing data that may be present in the output contents of the processing subsystem 22 is cleared. The most current record is then obtained at operation 304. At operation 306 a check is made to determine if the HYPO test flag of the most current record is set, indicating a hypoglycemic condition for the current bG test value being analyzed. If so, the processing subsystem 22 computes the carbohydrate (“carb”) ratio at operation 308 in the traditional manner. At operation 310 the insulin sensitivity is calculated in the traditional manner. At operation 312 the currently allowed bG is computed, which is described in greater detail below. At operation 314 the current delta bG is computed by subtracting the currently allowed bG from the most current record bG concentration. So in effect, operation 314 allows a previously taken correction bolus, which would operate to lower the user's bG, to be factored into the equation for determining the current delta bG. At operation 316 the current delta bG is converted into a carbohydrate suggestion using the insulin sensitivity and by the carbohydrate ratio factors. At operation 318 the outputs of carbohydrate suggestion and current delta bG are stored.
Referring now to FIG. 6, a flowchart 400 is shown illustrating one exemplary manner of computing a meal bolus with a health event adjustment (this flow is called out at operation 216 of FIG. 4B). At operation 402 an initialization is performed to set the recommended meal bolus to a known value. At operation 404 a check is made to determine if the most current record retrieved by the processing subsystem 22 from the database 26 has a carbohydrate amount available for use in the following calculations. If the answer is “Yes”, then at operation 406 a check is made to ensure that the denominator of the carbohydrate ratio is not “0”. If it is not, then at operation 408 a bit will be set for the output being created by the processing subsystem 22 to indicate a recommended meal bolus is associated with it. At operation 410 the working meal bolus is calculated. At operation 412 a check is made if a health event adjustment percentage is set in the most current record. If so, then at operation 414 a working health percentage is set equal to the health percentage contained in the most current record, and the recommended meal bolus is calculated using this working health percentage. For example, if the user has indicated “−20” in her/his percentage adjustment for the associated health event, then operation 414 uses this information to convert the “−20” to 80%, and the 80% figure is used to modify the working meal bolus to come up with the recommended meal bolus. Thus, in this example the recommended meal bolus would be reduced by 20%. At operation 418 the recommended meal bolus output just created by the processing subsystem 22 is saved in the log records portion 26 a of the database 26.
If the check at operation 412 indicates that no health percentage adjustment is indicated in the most current record, then the working health adjustment percentage is set equal to zero at operation 416 and then operations 414 and 418 are repeated. If in operation 404 it is understood that there is no carbohydrate amount from which a recommended meal bolus can be calculated, the recommended meal bolus of zero is simply saved at operation 418. If the denominator of the carbohydrate ratio of the most current record is found to be “0” at operation 406, then the routine ends with an error condition.
Referring to FIG. 7, there is shown an exemplary flowchart 500 setting forth operations that can be performed in computing a correction bolus, taking into account a percentage health adjustment input by the user. It will be appreciated that the operations of flowchart 500 are called by operation 236 in FIG. 4B.
At operation 502 the recommended correction bolus is initialized to a known value. At operation 504 the working bG correction bolus is calculated from the current delta bG (computed from the current bG value, the target bG, the most recent meal and/or previous correction records), and the insulin sensitivity from the most current record. At operation 506 any health adjustment percentage present in the most current record is applied to the working health percentage. Again, if the user has specified “None” when selecting a health adjustment percentage for the bG test value associated with the most current record, then the working health percentage will not be modified by any percentage value, as shown at operation 510. At operation 508 the recommended correction bolus is obtained by modifying the working bG correction bolus by the health percentage adjustment. Thus, if the user had set the health adjustment percentage for the bG test value associated with the most current record to “−25”, then the calculation at operation 512 would multiply the working bG correction bolus by 75%. The output with the newly calculated recommended correction bolus is then saved to the database history logbook records 26 a at operation 514.
In calculating the correction delta bG, an advantage of the device 10 is that the working delta bG is allowed to be a negative value. This allows a portion of any correction to be removed from the newly calculated correction delta bG, such as if the user had previously taken some carbohydrates to compensate for a LO or HYPO bG value, to be factored into the newly calculated correction delta bG. Another advantage is that for computing a carbohydrate suggestion for the user, the recommendations can be calculated to the currently allowed bG value rather than to the center of the bG target range.
As was discussed with respect to FIG. 5, a currently allowed bG value is computed at operation 312. Similarly, a currently allowed bG value is computed at operation 504 of FIG. 7. In some embodiments, the bolus calculator 22 a computes the currently allowed bG value based on whether the current bG measurement of the patient is less than the target bG value of the patient. FIG. 8 illustrates an example method 600 for computing the currently allowed bG value. The currently allowed bG value is indicative of a value that a patient's bG value may increase to at a current time without requiring correction bolus. As should be appreciated the method 600 may be executed by the processing subsystem 22 of the device 10 and in particular, can be implemented as part of the bolus calculator 22 a. For purposes of explanation, the method 600 is explained as being performed by the bolus calculator 22 a.
At operation 610, the bolus calculator 22 a computes a correction delta bG value. The correction delta bG value is indicative of an aggregated bG lowering effect of the events defined in the one or more active advice history records of the patient. An example method for determining the correction delta bG value is described in further detail below and with respect to FIG. 9.
At operation 612, the bolus calculator 22 a computes a target bG value. In some embodiments, the target bG value is determined as an average of the upper target bG value and the lower target bG value. The upper target bG value and the lower target bG value can be provided to the device 10 by the patient or another user such as the treating physician. Further, the upper target bG value and lower target bG value may be stored in the advice history records. Alternatively, the target bG value can be manually entered by a user.
At operation 614, the bolus calculator 22 a receives the current bG measurement value. As discussed above, the current bG measurement value can be determined when the patient provides a blood sample and the blood sample is analyzed by the device 10.
At operation 616, the bolus calculator 22 a determines a correction meal rise value based on a specific advice history record of the plurality of advice history records. As will be discussed below, the specific advice history record that is used can include: i) an event corresponding to the patient eating a meal that is greater than a snack size, ii) an event corresponding to a meal bolus amount, and iii) an event corresponding to the patient or an insulin pump 36 verifying that insulin was actually administered to the patient. The correction meal rise value indicates an amount the bG level of the patient can increase as a result of a meal eaten by the patient and with respect to the target bG value without requiring an additional correction bolus. An example technique for determining the correction meal rise value is discussed in greater detail below and with respect to FIG. 10.
At operation 618, the bolus calculator 22 a determines a maximum allowed bG value. The maximum allowed bG value indicates the maximum value for the patient's bG measurement before recommending a correction bolus to the patient. In some embodiments, the maximum bG value can be determined by summing the target bG value, the correction delta bG value, and the correction meal rise value.
At operation 620, the bolus calculator 22 a compares the current bG measurement value with the target bG value. If the bolus calculator 22 a determines that the current bG measurement value is greater than the target bG value, the bolus calculator sets the currently allowed bG value equal to the maximum allowed bG value, as shown at operation 622. If the bolus calculator 22 a determines that the current bG measurement value is less than the target value, the bolus calculator 22 a sets the currently allowed bG value equal to the sum of the target bG value and the correction delta bG value, as shown at operation 624. At operation 626, the bolus calculator 22 a stores the currently allowed bG value and maximum allowed bG value.
It should be appreciated that the exemplary method 600 is provided for example only. Variations of the method 600 are contemplated and are within the scope of the disclosure. Further, the ordering of the operations are not intended to be limiting and different orderings are contemplated and within the scope of the disclosure.
As was previously discussed, the bolus calculator 22 a determines a correction delta bG value. The correction delta bG value indicates an aggregated bG lowering effect of the events defined in the advice history records. Put another way, the correction delta bG value indicates the overall lowering effect of the insulin that is still active in the patient's body. In some embodiments, the bolus calculator 22 a analyzes the active advice history records from the oldest active advice history record to the most recent active advice history record to determine the aggregated bG lowering effect of the events defined therein. FIG. 9 illustrates an exemplary method 700 for determining the correction delta bG value. For purposes of explanation, the method 700 is described as being performed by the bolus calculator 22 a.
At operation 710, the bolus calculator 22 a retrieves the plurality of active advice history records. As previously described, the plurality of active advice history records are the advice history records defining events that are still affecting the patient's bG levels. For example, if an event defined in an advice history record is a correction bolus that was administered three hours prior to the current time and the active time of the insulin dose was three or more hours, the advice history record would be included in the plurality of active advice history records. Conversely, an advice history record corresponding to 48 hours prior to the current time, the advice history record would not be included in the plurality of active advice history records. At operation 712, the bolus calculator 22 a selects the oldest advice history record of the plurality of active advice history records.
At operation 714, the bolus calculator 22 a determines whether either of the HYPO test flag or the LO test flag in the selected advice history record is set to 1. If so, the bolus calculator 22 a determines a working delta bG value based on a carbohydrate intake of the patient defined in the advice history record, as shown at operation 716. If neither the HYPO test flag or the LO test flag are set to 1 in the selected advice history record, the bolus calculator 22 a determines the working delta bG value based on an insulin that was administered to the patient at a time corresponding to the selected active history record, as shown at operation 718. The working delta bG value is the amount by which the patient's bG level is currently decreased or increased by as a result of the events defined in the selected advice history record.
At operation 720, the bolus calculator 22 a determines the amount of time that has lapsed since the selected advice history record was generated. As discussed, the advice history record includes a time corresponding to the advice history record. The bolus calculator 22 a utilizes the time defined in the advice history record to determine the amount of time that has lapsed since the advice history record was generated.
At operation 722, the bolus calculator 22 a determines whether the amount of time that has lapsed since the advice history record was generated is greater than the offset time defined in the advice history record. If the amount of time is less than the offset time, then the bolus calculator 22 a increments the correction delta bG value by the full amount of the working delta bG value, as shown at operation 724. If the amount of time is greater than the offset time, the bolus calculator 22 a increments the correction delta bG value by the result of a predetermined formula, as shown at operation 726. For example, in some embodiments the correction delta bG value is incremented by the amount:
WorkingDeltabG Acting_Time - Offset_Time × ( Acting_Time - Time )
Where Acting_Time is the duration during which events defined in the selected advice history record effects the bG level of a patient, Offset_Time is the duration during which the full effect of events defined in the selected advice history record apply, and Time is the difference between the current time and the time when the advice history record was generated. As should be appreciated, the differences in time, e.g., Acting_Time-Offset_Time and Acting_Time-Time may be represented in minutes or seconds. Furthermore, Acting_Time and Offset_Time may be defined in the selected active history record.
At operation 728, the bolus calculator 22 a compares the running total of the correction delta bG value to a predetermined threshold, e.g., 0. As should be appreciated, the bolus calculator 22 a aggregates the total effect of bG influencing events defined in the plurality of active advice history records to calculate the correction delta bG. At each iteration, e.g., after analyzing another active advice history record, if the running total is less than 0, the bolus calculator 22 a sets the running total for the correction delta bG to 0 at operation 730. Otherwise, the running total for the correction delta bG is not altered.
At operation 732, the bolus calculator 22 a determines whether there are any remaining active advice history records remaining in the plurality of active advice history records left to analyze. If so, the bolus calculator 22 a obtains the next advice history record, as shown at operation 734, and repeats the operations described above. Else, the bolus calculator 22 a stops the routine and stores the aggregated correction delta bG value.
It is appreciated that the foregoing method 700 is provided for example only and not intended to be limiting. Other techniques for determining the correction delta bG value are contemplated and are within the scope of the disclosure.
As described above, the bolus calculator 22 a is configured to determine a correction meal rise value, which is indicative of an amount the bG level of the patient can increase with respect to the target bG value without requiring a meal bolus. In some embodiments, the bolus calculator 22 a analyzes the active advice history records to select the most recent relevant active advice history record. Using the selected active advice history record, the bolus calculator 22 a determines the amount of time that has lapsed since the record was generated to determine the correction meal rise value. FIG. 10 illustrates an example method 800 for determining a correction meal rise value. For purposes of explanation, the method 800 is explained as being executed by the bolus calculator 22 a.
At operation 810, the bolus calculator 22 a obtains the plurality of active advice history records. As described previously, the plurality of active advice history records are the advice history records that were generated within an acting time. That is, the events defined in the advice history record may be still influencing the bG measurements of a patient. At operation 812, the bolus calculator 22 a selects the most recent advice history record.
At operation 814, the bolus calculator 22 a analyzes the selected advice history record to determine whether the advice history record includes: i) an event corresponding to the patient eating a meal that is greater than a snack size, ii) an event corresponding to a meal bolus amount, and iii) an event corresponding to the patient or an insulin pump 36 verifying that insulin was actually administered to the patient.
If one or more of the conditions are not met, the bolus calculator 22 a obtains the next most recent advice history record, as shown at operation 816. If all of the above-identified conditions are met, the bolus calculator 22 a determines the time of the selected advice history record, as shown at operation 818. It is noted that if the bolus calculator 22 a cannot identify a record meeting the above-stated criteria, the method ends and the meal rise value is set equal to 0.
At operation 820, the bolus calculator 22 a determines the amount of time that has lapsed since the selected advice history record was generated. At operation 822, the bolus calculator 22 a determines whether the amount of time that has lapsed is less than the offset time defined in the selected advice history record. If the amount of time is less than the offset time, the correction meal rise value is set equal to the full amount of the meal rise value, as indicated in the action shape defining meal rise values, as shown at operation 824. As discussed, the values of the action shape may be entered by a user such as the patient or a treating physician. If, however the amount of time is greater than the offset time, the bolus calculator 22 a sets the correction meal rise value equal to an adjusted meal rise value, as shown at 826. In some embodiments, the bolus calculator 22 a sets the correction meal rise value equal to the result of a predetermined formula, as shown at 826. For example, the adjusted meal rise value can be set equal to the result of the following formula:
Meal_Rise Acting_Time - Offset_Time × ( Acting_Time - Time )
where Meal_Rise is the full meal rise value defined in the action shape corresponding to the selected advice history record, Acting_Time is the duration during which the selected advice history record effect the bG level of a patient, Offset_Time is the duration during which the full effect of the events defined in the selected advice history record apply, and Time is the amount of time since the selected advice history record was generated. Acting_Time and Offset_Time may be defined in the selected active history record. At operation 828, the correction meal rise value is stored.
It is appreciated that the foregoing method 800 is provided for example only and not intended to be limiting. Other techniques for determining the correction meal rise value are contemplated and are within the scope of the disclosure.
As previously discussed with respect to FIG. 9, when the bolus calculator 22 a is determining the working correction delta bG value for a particular advice history record, the bolus calculator 22 a determines whether the HYPO or LO test flag is set to true. If neither flag is set, the bolus calculator determines the working delta bG value based on the insulin history of the patient. FIGS. 11A and 11B together illustrate an example method 900 for determining the working delta bG value based on the insulin history the patient.
At operation 910, the bolus calculator 22 a obtains the advice history record for which the working correction delta bG value is being calculated. At operation 912, the bolus calculator 22 a determines whether the events defined in the advice history record include a confirmation that insulin was administered to the patient by an insulin pump 36. If so, a working correction bolus value is set equal to the confirmed correction bolus value identified in the advice history record and a working meal bolus value is set equal to the confirmed meal bolus value identified in the advice history record, as shown at operations 914 and 916, respectively. If there was no confirmed insulin defined in the advice history record, the bolus calculator 22 a sets the working correction bolus value equal to the user selected correction bolus value identified in the advice history record and the working meal bolus value equal to the user selected meal bolus value, as shown at operations 918 and 920, respectively.
At operation 922, the bolus calculator 22 a determines whether the health percentage value defined in the advice history record is defined. If a health percentage value is defined, the working correction bolus is set equal to:
( WorkingCorrectionBolus 1 + HealthPercentage )
where WorkingCorrectionBolus is the working correction bolus value as determined above and HealthPercentage is the health percentage value defined in the advice history record, as shown at operation 924. It is appreciated that the health percentage value can be a decimal representation of the percentage. Further, at operation 926, the working meal correction bolus value is set equal to:
( WorkingMealBolus 1 + HealthPercentage )
where WorkingMealBolus is the working correction bolus value determined above. It is appreciated that the health percentage value can be a decimal representation of the percentage. If at operation 922, a health percentage is not defined, the working correction bolus and the working meal bolus values are left unchanged.
At operation 928, the bolus calculator 22 a determines whether the working correction bG value is equal to 0. If so, the bolus calculator 22 a sets the working delta bG value equal to 0, as shown at operation 929, and the process returns the working delta bG value.
If the working correction bG value is not equal to 0, the bolus calculator 22 a determines whether the sum of the working correction bolus value and the working meal bolus value is less than 0, as shown at operation 930. If so, the bolus calculator 22 a, as shown at operation 932, calculates the working delta bG value according to:
Working_Delta ⁢ _bG ⁢ _value = - 1 × WorkingMealBolus × ( InsulinSensitivitybG InsulinSensitivityInsulin )
where WorkingMealBolus is the working meal bolus value determined above, and InsulinSensitivitybG and InsulinSensitivityInsulin are predetermined values provided by the patient or another user in the advice history record. Once the working delta bG value is determined the method 900 ends.
If, however, the sum of the working correction bolus value and the working meal bolus value is not less than 0, the bolus calculator 22 a determines whether the patient had accepted the bolus recommendation identified in the advice history record, as shown at operation 934. If so, at operation 936 the bolus calculator 22 a determines the working delta bG value according to:
Working_Delta_bG_value=bG_Concentration−Currently_Allowed_bG
where bG_Concentration is the measured bG concentration value identified in the advice history record and the Currently_Allowed_bG is the currently allowed bG value in the advice history record, the calculation of which was described in greater detail above. If the advice history record does not indicate that the bolus recommendation was accepted, at operation 938 the bolus calculator 22 a determines the working delta bG value according to:
Working_Delta ⁢ _bG ⁢ _value = WorkingCorrectionBolus × ( InsulinSensitivitybG InsulinSensitivityInsulin )
where WorkingCorrectionBolus is the working correction bolus value, described above, and InsulinSensitivitybG and InsulinSensitivityInsulin are predetermined values provided by the patient or another user in the advice history record. Once the working delta bG value is determined, the working delta bG value is returned and the method 900 stops executing.
It is appreciated that the foregoing method 900 is provided for example only and not intended to be limiting. Other techniques for determining the working delta bG value are contemplated and are within the scope of the disclosure.
As previously discussed with respect to FIG. 9, when the bolus calculator 22 a is determining the working correction delta bG value for a particular advice history record, the bolus calculator 22 a determines whether the HYPO or LO test flag is set to true. If one or both flags are set, the bolus calculator 22 a determines the working delta bG value based on the carbohydrate history of the patient. FIG. 12 illustrates an example method 1000 for determining the working delta bG value based on the carbohydrate history the patient.
At operation 1010, the bolus calculator 22 a receives the advice history record for which the working correction delta bG value is being calculated. At operation 1012, the bolus calculator 22 a determines whether the LO test flag is set. If the LO test flag is not set, at operation 1014 the bolus calculator 22 a determines whether the bolus recommendation indicated in the advice history record was accepted. If the bolus recommendation was accepted, at operation 1016 the bolus calculator 22 a determines the working delta bG value according to the following:
Working _Delta_bG _value=bG_Concentration−Currently_Allowed_bG
where bG_Concentration is the measured bG concentration value identified in the advice history record and the Currently_Allowed_bG is the currently allowed bG value in the advice history record.
If the advice history record indicates that the LO test flag was true or the bolus recommendation was not accepted, the bolus calculator 22 a determines whether a carbohydrate amount value as associated with the advice history record, as shown at operation 1018. If not, the working delta bG value is set equal to 0, as shown at operation 1020. If a carbohydrate value was associated with the advice history record, at operation 1022 the bolus calculator 22 a calculates the working delta bG value according to:
Working_Delta ⁢ _bG ⁢ _value = - 1 × CarbAmount × ( InsulinSensitivitybG InsulinSensitivityInsulin ) × ( CarbRatioInsulin CarbRatioCarbs )
where CarbAmount is the carbohydrate amount value associated with the advice history record and InsulinSensitivitybG, InsulinSensitivityInsulin, CarbRatioInsulin and CarbRatioCarbs are predetermined values provided by the patient or another user in the advice history record. Once the working delta bG value is determined, the working delta bG value is returned and the method 1000 stops executing.
It is appreciated that the foregoing method 1000 is provided for example only and not intended to be limiting. Other techniques for determining the working delta bG value are contemplated and are within the scope of the disclosure.
In some embodiments, the patient can provide an indication to the bolus calculator 22 a that a dose of insulin will be administered in the near future, e.g., in about 10 minutes. In these embodiments, the bolus calculator 22 a can adjust the offset time in the advice history record to compensate for the lag time that will result from the later administered insulin. FIGS. 13A and 13B illustrate an example of lag time being compensated for in such a situation. In FIG. 13A, an action shape 1100 is illustrated. The action shape 1100 of FIG. 13A presumes that the patient will administer insulin at the time of the bolus recommendation. If, however, the patient provides an indication that the insulin will be administered shortly thereafter, the bolus calculator 22 a can adjust the offset time and acting time defined in the action shape to account for the lag time between the bolus recommendation and when the insulin will be administered. FIG. 13B illustrates an example of the action shape 1100 after the lag time is accounted for. As should be appreciated, the offset time and the acting time have both been increased by the lag time.
In some embodiments, the patient can turn a bolus advice feature on or off. When the bolus advice feature is turned off, the bolus calculator 22 a may be configured not to generate advice history records for various events. If, however, the patient decides to turn the bolus advice feature on, the bolus calculator 22 a may require previous advice history records to perform the methods described above. Thus, in some embodiments, when the patient turns the bolus advice feature on, the bolus calculator 22 a creates a plurality of advice history records and back-fills the parameter values described above with the values provided by the user, e.g., the patient or the patient's physician. In these embodiments, the various fields may be left empty as the particular data, e.g., bG measurement values and meal histories, to fill the values may not have been recorded. If, however, the data was maintained, the data may be automatically back-filled into the advice history records as well.
In some embodiments, the patient can provide instructions to the insulin pump 36 to deliver a bolus. The user has the option to manually deliver the bolus. When the bolus is administered, the bolus calculator 22 a includes the amount of bolus delivered to the patient. A situation may arise however, where the patient is provided with a bolus recommendation, including a recommended amount of insulin, but manually delivers a bolus amount that does not match the recommended amount of insulin. This may be because the patient was unable to enter the precise amount using the user interface of the insulin pump 36 or because of a partial delivery error by the pump. Thus, in some embodiments, the bolus calculator 22 a is configured to compare the amount manually entered by the patient as the bolus amount delivered to the bolus recommendation amount. If there is a discrepancy, the bolus calculator 22 a determines whether the discrepancy was due to the patient being unable to enter the exact amount using the user interface of the insulin pump 36, e.g., if the amount entered is within a “step-size” of the bolus recommendation. If this is the case, the bolus calculator 22 a stores the recommendation accepted as “TRUE” (for example in operation 934). If, however, the amount entered is much greater or much less than the bolus recommendation, the bolus calculator 22 a stores the recommendation accepted as “FALSE” and acts on the amount of insulin manually entered by the patient.
Referring now to FIG. 14, an example insulin pump 36 is illustrated. In the exemplary embodiment, the insulin pump 36 is configured to receive an instruction to deliver an amount of insulin to a patient. The instruction may be received from the device 10 or manually provided by the user by way of a user interface. The insulin pump 36 delivers the insulin to the patient and generates one or more insulin delivery records documenting the delivery of the insulin. The insulin pump 36 can communicate the one or more insulin delivery records to the device 10, which in turn documents the delivery of the insulin in an advice history record. In an illustrative embodiment, the insulin pump 36 includes an insulin delivery controller 1210, an insulin delivery mechanism 1212, an insulin cartridge 1214, a transceiver 1216, a battery 1218, and an insulin delivery record datastore 1220. It should be appreciated that the insulin pump 36 may include additional components which are not shown, e.g., a user interface such as a display, buttons, a touch screen or touch pad.
In some embodiments, the insulin delivery controller 1210 is one or more processors configured to receive an instruction to deliver an amount of insulin to the patient and to control the insulin delivery mechanism 1212 based on the instruction. The insulin delivery mechanism 1212 may be any suitable mechanism for delivering insulin to the patient. The insulin delivery mechanism 1212 is coupled to the insulin cartridge 1214 by, for example, a tube. The insulin delivery controller 1210 can control the insulin delivery mechanism 1212 and/or the pressure in the insulin cartridge 1214 to deliver insulin to the patient.
When delivery of the insulin to the patient is completed or stopped the insulin delivery controller 1210 generates one or more insulin delivery records, which may be stored in the insulin delivery record datastore 1220. As will be described below, the insulin delivery controller 1210 is configured to operate the insulin pump 36 in a “pause mode” when the delivery of insulin is interrupted. The insulin pump 36 is said to have been in the pause mode if the delivery of insulin is stopped for less than a predetermined amount of time before the delivery of insulin recommences. In the event the insulin delivery controller 1210 determines that the insulin pump was in pause mode or the delivery of insulin was never interrupted, the insulin delivery controller 1210 generates an insulin delivery record that indicates that the entire amount of insulin was delivered to the patient. If, however, the amount of time that delivery of insulin was interrupted is greater than the predetermined amount of time, the insulin delivery controller 1210 generates two insulin delivery records, such that one record indicates an amount of insulin delivered before the delivery of insulin was interrupted and the other record indicates an amount of insulin delivered after the delivery of insulin recommenced.
While the insulin delivery mechanism 1212 is delivering the insulin, the insulin delivery controller 1210 determines whether the insulin pump 36 is able to deliver the entire amount of insulin. In particular, the insulin delivery controller 1210 monitors one or more conditions of the insulin pump which can be indicative of an inability to complete delivery of the insulin. For example, in some embodiments the insulin delivery controller 1210 can monitor the insulin cartridge 1214 to determine whether the insulin cartridge is empty or has been removed. Similarly, the insulin delivery controller 1210 can monitor the pressure in the insulin cartridge 1214 to determine whether the insulin delivery mechanism 1212 has become occluded. That is if the pressure increases beyond a pressure threshold, the insulin delivery controller 1210 can determine that the insulin delivery mechanism 1212 has become occluded. Further, the insulin delivery controller 1210 can monitor the battery 1218 to determine whether the battery 1218 has no remaining charge or has been removed from the insulin pump 36. It should be appreciated that the insulin delivery controller 1210 can monitor the insulin pump for other conditions which may also be indicative of an inability of complete the delivery of the entire amount of insulin.
When the insulin delivery controller 1210 detects a condition indicating that the insulin pump is unable to deliver the entire amount of insulin, the insulin delivery controller 1210 can begin maintaining a timer. For example, in some embodiments the insulin delivery controller 1210 may generate a first time stamp when the insulin pump determines that the insulin pump is unable to deliver the insulin, e.g., when the condition is detected, and may generate a second time stamp when the condition is resolved. In these embodiments, the insulin delivery controller 1210 can determine an amount of time that the condition persisted based on the first and second time stamp. It should be appreciated that other techniques for maintaining a timer are contemplated and within the scope of the disclosure.
Upon determining that the condition has been resolved, e.g., when a new insulin cartridge or infusion set has been properly attached and primed, the insulin delivery controller 1210 recommences and completes the delivery of the insulin to the patient. After the condition has been resolved, the insulin delivery controller 1210 compares the amount of time indicated by the timer to a predetermined time threshold, e.g., 15 minutes. If the amount of time is less than the time threshold, the insulin delivery controller 1210 determines that the insulin pump 36 was operating in a “pause mode” and generates a first record indicating that the entire amount of insulin was administered to the patient. If, however, the amount of time is greater than the time threshold, then the insulin delivery controller 1210 determines that the delivery of insulin was stopped and generates a second record indicating an amount of insulin that was administered to the patient prior to the delivery of insulin being interrupted and a third record indicating an amount of insulin that was delivered to the patient after delivery of insulin recommenced. The insulin delivery controller 1210 stores the generated insulin delivery record or records in the insulin delivery record datastore 1220. The insulin delivery controller 1210 can communicate the generated insulin delivery records to the device 10 after delivery is complete or according to a predetermined schedule, e.g., once a day.
It should be appreciated that once the insulin delivery records are communicated to the device 10, the bolus calculator 22 a can utilize the information contained in an insulin delivery record to fill one or more fields in an advice history record. For instance, the bolus calculator 22 a can insert the amount of insulin delivered indicated by the insulin delivery record in the confirmed total bolus field or the correction bolus field or the meal bolus field of an advice history record. Furthermore, based on the bolus recommendation indicated in the advice history record and the amount of insulin indicated in the insulin delivery records, the bolus calculator 22 a can determine whether the confirmed insulin followed the bolus recommendation.
FIG. 15 illustrates an exemplary method 1300 for delivering insulin to a patient. The method 1300 may be executed by one or more processors of the insulin pump 36. The method 1300 may begin executing when the insulin pump 36 receives an instruction to deliver an amount of insulin and commences the delivery of the insulin, as shown at operation 1310. As discussed earlier, the instruction may be received from the device 10 or manually entered using a user interface of the insulin pump 36. Upon commencing the delivery of the insulin, the insulin pump 36 can monitor one or more conditions that indicate an inability to deliver the entire amount of insulin, as shown at operation 1312. As discussed, the insulin pump 36 can monitor the battery 1218 and the insulin cartridge 1214 for the existence of one the conditions.
At operation 1314, the insulin pump 36 can check the amount of insulin delivered to the patient to determine whether the delivery of insulin is complete, i.e., the entire amount of insulin has been delivered. If the delivery of insulin is complete, the insulin pump 36 can generate a first record indicating that the entire amount of insulin was delivered to the patient, as shown at operation 1324. If, however, the delivery is not complete, the insulin pump 36 determines whether one of the conditions described above has materialized, as shown at operation 1316. If none of the conditions have materialized, the insulin pump 36 continues to deliver the insulin and monitor the conditions. If, however, one of the conditions has materialized, e.g., the insulin cartridge 1218 is empty, the insulin pump 36 maintains a timer until the condition is resolved, as shown at operation 1318. As was discussed above, the timer may be maintained by generating a first time stamp when the condition is realized and a second time stamp when the condition is resolved. Once the condition has been resolved, e.g., the insulin cartridge 1218 is replaced or refilled, the insulin pump recommences and completes the delivery of the insulin, as shown at 1320. In some embodiments, prior to recommencing delivery of the insulin, the insulin pump 36 may display, in a graphical user interface, a request to the patient to confirm that he or she wishes to recommence delivery of the insulin. Once the patient provides the confirmation, the insulin pump 36 can recommence delivery of the insulin.
Once the condition is resolved or the delivery of insulin is complete, the insulin pump 36 can determine whether the insulin pump 36 was operating in a “pause mode” or was stopped. Thus, the insulin pump 36 can compare the amount of time indicated by the timer to the time threshold, as shown at operation 1322. If the amount of time is less than the time threshold, the insulin pump 36 determines that the insulin pump 36 was in “pause mode” and generates a first insulin delivery record indicating that the entire amount of insulin was delivered to the patient, as shown at operation 1324. The first insulin delivery record may be stored in the insulin delivery record datastore 1220, as shown at operation 1330.
If, however, the amount of time is greater than the time threshold, the insulin pump 36 determines that the insulin pump 36 was stopped. In this situation, the insulin pump 36 generates a second insulin delivery record indicating a first amount of insulin was delivered to the patient, as shown at operation 1326. The first amount of insulin is the amount of insulin that was delivered to the patient before operation of the insulin pump 36 was interrupted. The insulin pump 36 also generates a third insulin delivery record indicating that a second amount of insulin was delivered to the patient, as shown at operation 1328. The second amount of insulin is the amount of insulin that was delivered to the patient after delivery of the insulin was recommenced. The insulin pump 36 can store the second and third insulin delivery records in the insulin delivery record datastore 1220, as shown at 1330. Upon completion of the method 1300, the insulin pump 36 may provide any generated insulin delivery records to the device 10.
It should be appreciated that the method 1300 is provided for example only and not intended to be limiting. Variations of the method are contemplated and are within the scope of the disclosure.
In some embodiments, the device 10 is configured to receive a request to deliver a multiwave bolus to a patient. A multiwave bolus is a bolus amount that is delivered over two or more doses of insulin. Thus, a multiwave bolus includes an initial faster dose of insulin followed by one or more additional slower doses of insulin. The additional doses of insulin are separated from the initial amount dose of insulin as well as the other doses of insulin by predetermined time periods. The time periods which separate the additional doses of insulin from one another can be based on different factors such as the type or amount of meal consumed, the patient's bG level, the patient's insulin sensitivity, or any other suitable factors.
When a bolus calculator 22 a receives a request to deliver a multiwave bolus, the bolus calculator 22 a can determine an amount of insulin to include in each dose of the multiwave bolus. Furthermore, the bolus calculator 22 a can determine the time periods over which the slow dose of insulin is delivered. Once the bolus calculator 22 a (or patient) has determined the amount of insulin in the initial fast and slow doses, and the time over which the slow dose is delivered, the bolus calculator 22 a can provide instructions to the insulin pump 36 to deliver the insulin doses.
In some embodiments where the device 10 is configured to support multiwave boluses, the bolus calculator 22 a may be configured to determine the amount of insulin to be delivered in the initial dose of insulin based on the bolus recommendations to the patient. In particular, the bolus calculator 22 a determines whether the bolus recommendation includes a correction bolus recommendation. If the bolus recommendation includes a correction bolus recommendation, the bolus calculator 22 a sets the amount of insulin to be delivered in the initial dose of insulin equal to a value that is greater than or equal to the correction bolus amount. Put another way, if the patient requests a multiwave bolus and a most recent bolus recommendation includes a correction bolus recommendation, the initial dose of insulin at least includes the entire amount of insulin indicated in the correction bolus recommendation. If the bolus recommendation includes a meal bolus, the meal bolus amount can be distributed between the initial dose and the additional doses of insulin. It should be appreciated that the meal bolus can be distributed between the initial dose and the additional doses in any suitable manner. If, however, the bolus recommendation does not include a meal bolus recommendation, the bolus calculator 22 a can override the request to deliver the multiwave bolus (or entirely eliminate the choice of a multiwave bolus) and may instruct the insulin pump 36 to deliver only the initial dose of insulin, i.e., the correction bolus amount.
FIG. 16 illustrates an example method 1400 for determining an amount of insulin to deliver to a patient. For purposes of explanation, the method 1400 is explained as being executed by the bolus calculator 22 a. The method 1400 can begin executing when a request to deliver a multiwave bolus to the patient is received, as shown at operation 1410. As discussed, the request can be received from the patient via a user interface such as the touch display 16 of the device 10. Upon receiving the request, the bolus calculator 22 a can determine a correction bolus amount corresponding to the requested multiwave bolus and a meal bolus amount corresponding to the requested multiwave bolus, as shown at operations 1412 and 1414, respectively. In some embodiments, the bolus calculator 22 a determines the correction bolus amount and the meal bolus amount from a most recent advice history record where a bolus recommendation was made.
Once the bolus calculator 22 a has determined the correction bolus amount, the bolus calculator 22 a can determine whether the correction bolus amount is greater than zero, as shown at operation 1416. If the correction bolus amount is greater than zero, the bolus calculator 22 a sets the initial amount of insulin in the initial dose equal to the entire correction bolus amount, as shown at operation 1418.
The bolus calculator 22 a further determines whether the meal bolus amount is greater than zero, as shown at operation 1420. If the meal bolus amount is greater than zero, the user can choose to distribute the meal bolus amount amongst the plurality of doses, as shown at operation 1422. It should be appreciated that the meal bolus amount may be distributed amongst the additional doses only or may also be distributed amongst the initial dose and the additional doses.
Once the user has confirmed the amounts of insulin to deliver in each dose of the multiwave bolus, the bolus calculator 22 a can instruct the insulin pump 36 to deliver the initial dose of insulin, as shown at 1424. It should be appreciated that if a correction bolus recommendation was made to the patient without a meal bolus recommendation, the bolus calculator 22 a will only instructs the insulin pump 36 to deliver the initial dose of insulin. Conversely, if a meal bolus recommendation was made, the bolus calculator 22 a may instruct the insulin pump 36 to deliver the additional doses of insulin as well.
The method 1400 illustrated in FIG. 16 is provided for example and is not intended to be limiting. Variations of the method 1400 are contemplated and are within the scope of the disclosure.
As described above, the bolus calculator 22 a makes bolus recommendations to a patient. Further, the bolus calculator 22 a can be configured to make a correction bolus recommendation and a meal bolus recommendation, as discussed above. In some embodiments, the device 10 is configured to display a graphical user interface (GUI) which presents the correction bolus recommendation and the meal bolus recommendation and to receive input from the patient modifying the correction bolus recommendation and/or the meal bolus recommendation.
In some embodiments, the bolus calculator 22 a is configured to allow a patient to modify the meal bolus amount and/or the correction bolus amount. FIG. 17 illustrates an example GUI 1500 that may displayed on the touchscreen display 16 of the device 10. In some embodiments, the GUI 1500 can display a correction bolus amount value 1610 and a meal bolus amount 1620. As should be appreciated, the correction bolus amount value 1610 can be the amount indicated in the correction bolus recommendation and the meal bolus amount value 1620 can be the amount indicated in the meal bolus recommendation. In the illustrative example, the correction bolus amount value is displayed in a correction bolus amount modification field 1612 and the meal bolus amount value 1620 is displayed in a meal bolus amount modification field 1622. The GUI 1600 further displays a total bolus amount value 1630 which indicates the total bolus recommendation for the patient. The total bolus amount value 1630 can be indicative of the sum of the meal bolus recommendation and the correction bolus recommendation. In the illustrative embodiment, the total bolus amount value 1630 is displayed in a total bolus amount modification field 1632. It is noted that in cases where the sum of the correction bolus and the meal bolus is negative, that the total bolus amount may be displayed as zero.
The correction bolus amount modification field 1612 allows the patient to modify the correction bolus amount value 1610 and the meal bolus amount modification field 1622 allows the patient to modify the meal bolus amount value 1620. The GUI 1600 further displays input buttons 1650 and 1652 which allow the patient to increment (input button 1650) or decrement (input button 1652) a selected value. For instance, in the example the correction bolus amount modification field 1612 is selected. The patient can increment the correction bolus amount value 1610 by a predetermined amount, e.g., 0.05 units, by pressing the input button 1650 and can decrement the correction bolus amount value 1610 by the predetermined amount by pressing the input button 1652. If the patient wishes to modify the meal bolus amount value 1620, the patient can touch and select the meal bolus amount modification field 1622. Once the meal bolus amount modification field 1622 is selected, the patient can modify the meal bolus amount value 1620 as described with respect to the modification of the correction bolus amount value 1610. When the patient modifies one or both of the correction bolus amount value 1610 and the meal bolus amount value 1620, the bolus calculator 22 a can adjust the total bolus amount 1630 to reflect the sum of the modified correction bolus amount value 1610 and/or the modified meal bolus amount value 1620. The adjusted total bolus amount 1630 can be presented in the total bolus amount field 1632.
The GUI 1600 may present additional data to the patient. For example, the GUI 1600 may display the most recent bG measurement 1660, the maximum allowed bG value 1662, and a carbohydrate amount associated with the most current bG measurement 1664. It should be appreciated that the GUI 1600 is provided for example only and not intended to be limiting. Further, while the GUI 1600 is described with respect to a touch screen, the foregoing GUI 1600 can be implemented on a device 10 having a physical partial keyboard or a physical number pad.
Referring now to FIG. 18, an example method 1700 for adjusting a bolus recommendation using a graphical user interface 1600 is depicted. At operation 1710, the device 10 determines a correction bolus amount value, a meal bolus amount value, and a total bolus amount value. It should be appreciated that the bolus amount values can be determined in any suitable manner. At operation 1712, the device 10 presents the GUI 1600 on the display 16 of the device 10. It should be appreciated that the GUI 1600 may be presented in response to the patient selecting the particular screen from a menu option or in response to a bolus recommendation being made to the patient.
At operation 1714, the device 10 presents the correction bolus amount value, the meal bolus amount value, and the total bolus amount value in the GUI 1600. In an example embodiment, the correction bolus amount value, the meal bolus amount value, and the total bolus amount value can be presented in the correction bolus amount modification field 1612, the meal bolus amount modification field 1622, and the total bolus amount field 1632, respectively.
At operation 1716, the device 10 can receive input indicating an instruction to modify at least one of the correction bolus amount value and the meal bolus amount value. As was described with respect to FIG. 16, the patient can select the correction bolus amount modification field 1612 or the meal bolus amount modification field 1622, and can adjust the value presented therein. It should be appreciated that other techniques for modifying the meal bolus amount value and the correction bolus amount value may also be implemented. At operation 1718, the device 10 displays the modified correction bolus amount value and/or the modified meal bolus amount value in place of the value or values which were modified.
At operation 1720, the device 10 adjusts the total bolus amount value based on the received input. The device 10 can calculate the adjusted bolus amount value by adding the correction bolus amount value and the meal bolus amount value, as modified by the patient. At operation 1722, the device 10 can present the adjusted total bolus amount value in place of the previously presented total bolus amount value.
At operation 1724, the device 10 generates an advice history record indicating any adjusted values. It should be appreciated that generating an advice history record can include generating a new advice record or modifying a previously created advice history record which contained the original correction bolus recommendation and meal bolus recommendation. For example, if the patient modifies the correction bolus amount, the device 10 can populate the correction bolus field in the advice history record which contained the correction bolus recommendation. Similarly, if the patient modifies the meal bolus recommendation, the device 10 can populate the meal bolus field in the advice history record which contained the meal bolus recommendation. Alternatively, the device 10 can create a new advice history record. The new advice history record can indicate the correction bolus recommendation and the meal bolus recommendation, as well as any modified values. The new advice history record can replace a previous advice history record which only contained the bolus recommendations.
It should be appreciated that the method 1700 of FIG. 18 is provided for example only and not intended to be limiting. Variations of the method are contemplated and are within the scope of the disclosure.
In some embodiments, the display 16 of the device 10 may be configured to display a predetermined number of significant digits, e.g., three significant digits. In these embodiments, the bolus calculator 22 a can be configured to maintain an actual value of a value to be displayed as well as the display value of the value to be displayed. For example, if the display 16 only displays three significant digits and the patient has been recommended 9.25 units of insulin, the bolus calculator 16 can display the value 9.25 to the patient. If the patient wishes to increase the amount of insulin to take, the bolus calculator 22 a can display the value increasing for example by increments of 0.05 until the total bolus reaches 10.0 units on the display 16 then continue in increments of 0.1 units to maintain three significant digits. If the patient then decides to reduce the amount, the bolus calculator 22 a can display the value decrementing in 0.1 unit resolution on the display 16 until the total bolus is decreased to 10.0 units after which 0.05 unit decrements would apply to maintain the three significant digits.
In some embodiments, the bolus calculator 22 a can be configured to display medical data including a bolus history to a user, e.g., patient or treating physician. The bolus history can include information such as how much insulin was recommended to the patient or how much insulin was administered to the patient. Furthermore, the bolus calculator 22 a can be further configured to display to the user whether the patient followed the bolus recommendation, did not follow the bolus recommendation, or entered an insulin amount without a bolus recommendation. As will be described below, the bolus calculator 22 a can display the information on the medical data on the display 16 of the device 10 or on a remote device, e.g., a computing device of the treating physician.
FIG. 19 illustrates an exemplary GUI 1800 that can be displayed by the device 10. The GUI 1800 may be configured to display medical data according to the date on which the medical data was obtained. In some embodiments, the GUI 1800 may be arranged such that the entries in a row correspond to a particular history record and the entries displayed in a column correspond to a particular data type. Furthermore, each calendar day may be represented with an information bar, e.g., information bar 1802. The information bar 1802 may include a date field 1804, a bG measurement field 1806, a bolus history field 1808, and a meal history field 1810. In the illustrated example, the date field 1804 corresponds to medical data collected on a particular day, e.g., Feb. 10, 2011. Entries appearing in the column of the date field 1802 indicate the time of the history record to which the medical data displayed in the same row corresponds.
Entries displayed in the column corresponding to the bG measurement field 1806 indicate a bG measurement of the patient corresponding to the time displayed in the date field 1804. Thus, if a history record for a particular time includes a bG measurement, the bG measurement is displayed in the column of the bG measurement field 1806 and the row corresponding to the time of the history record. The entries can be displayed with an indicator 1812 that displays the source of the bG measurement. For example, the indicator 1812 may indicate that the bG measurement was obtained from a bG strip. It should be appreciated that a different indicator may be displayed when the bG measurement is obtained from a different source, e.g., a continuous glucose monitor.
Entries displayed in the column corresponding to the bolus history field 1808 represent a bolus history of the patient time associated with the time displayed in the date field 1804. Thus, if a history record for a particular time includes bolus history data, the bolus history data is displayed in the column of the bolus history field 1808 and in the row corresponding to the history record. As should be appreciated, the bolus history data can indicate whether a bolus recommendation was made to the patient, whether insulin was delivered to the patient, and/or an amount of insulin that was delivered to the patient. Entries displayed in the column of the bolus history field 1808 can include indicators that indicate a treatment recommendation determined by the device 10 that has been verified as being followed, a treatment recommendation determined by the device 10 that has been verified as not being followed, and treatment data manually entered by the patient to the diabetes management device without a treatment recommendation. For example, if the patient is recommended a specific amount of insulin in a bolus recommendation and the patient takes the specific amount of insulin, then a first indicator, e.g., indicator 1814, can be displayed proximate to the amount of insulin delivered to the patient, e.g., amount 1816. Similarly, if the patient is recommended a specific amount of insulin in a bolus recommendation and the patient takes an amount that is not equal to the specific amount of insulin, then a second indicator, e.g., indicator 1818, can be displayed proximate to the amount of insulin delivered to the patient, e.g., amount 1820. Furthermore, if the patient administers insulin in the absence of a bolus recommendation a value is shown without an indicator. Furthermore, a bolus type indicator may be displayed next to the amount of insulin delivered as well. For example, indicator 1822 indicates that a standard bolus was delivered to the patient. In this example, the standard bolus included 6.5 units of insulin. It should be appreciated that other bolus type indicators may be displayed to indicate a multiwave bolus or an extended bolus.
Entries displayed in the column corresponding to the meal history field 1810 represent a meal history of the patient time corresponding to the time displayed in the date field 1804. Thus, if a history record for a particular time includes meal history data, the meal history data is displayed in the column of the meal history field 1810 and in the row corresponding to the history record. For example, if the patient enters data indicative of a carbohydrate intake, the amount of carbohydrates ingested by the patient, e.g., carbohydrate amount 1824, can be displayed in the column corresponding to the meal history field 1810.
It is should be appreciated that the GUI 1800 is provided for example only and not intended to be limiting. Furthermore, additional data fields may be displayed in the GUI 1800 as well.
In some embodiments, the device 10 is configured to provide the medical data to a remote device for display on the remote device. In these embodiments, the remote device 10 can display the medical data in a graphical user interface. FIG. 20 illustrates an example GUI 1900 that can be displayed at the remote device. It should be appreciated that the remote device includes one or more processors that execute computer readable instructions for presenting the GUI 1900 as well as for rendering the medical data provided to the GUI 1900.
The illustrated GUI 1900 is a trend graph that displays the trends of a user. The GUI 1900 may be accessed by the user when the user selects the “Graphs” menu option 1922 and subsequently the “Trends” menu option 1924. The user can further select a range of dates. In the illustrated example the user has selected to view trends for the week beginning on May 8, 2007 and ending on May 14, 2007. It should be appreciated that the graph may correspond to different time periods, e.g., a single day, a month, or any other period of time.
In the illustrated example, the GUI 1900 displays a bG measurement of the patient at a particular time, an amount of insulin that was recommended to the patient at the particular time, and the amount of insulin that was taken by the patient at the particular time. The GUI 1900 can display different visual indicators to indicate different events. For example, a solid dot, e.g., dot 1902, can indicate an amount of insulin that was recommended to the patient. A straight line, e.g., line 1904, can indicate a standard bolus was delivered to the patient, a “u”-shaped line, e.g., line 1906, can indicate an extended bolus was delivered to the patient, and an inverted “h”-shaped line, e.g., 1908, can indicate a multiwave bolus was delivered to the patient. The units on the right side of the GUI 1900 indicate the amount of insulin that was recommended and/or administered to the patient. For example, on the 8th of May at 9:06 PM, the patient was recommended 4.1 units of insulin. This can be observed from the GUI 1900, as dot 1902 is displayed at a location corresponding to 4.1 units of insulin and at 9:06. The patient actually had 6.8 units of insulin delivered at 9:06 in a multiwave bolus, which is indicated in the GUI 1900 by the “h”-shaped indicator 1908 that extends to 5.0 units. Similarly, at 7:00 PM on May 9, 2007 the patient was administered 4.0 units of insulin in a standard bolus. This can be observed in GUI 1900 by the straight line indicator 1904 that extends to 4.0 insulin units. Furthermore, the user can observe that the 4.0 units of insulin were administered without a bolus recommendation (no recommendation dot).
The GUI 1900 may also display bG measurements of the patient. The units on the left side of the GUI 1900 indicate the glucose concentration measured from the patient at a particular time. An X can be used to indicate the measured bG value. For example, on May 8, 2007 at 3:05 PM, a bG measurement of 215 mg/dl was determined by the device 10. This can be observed by the X indicator 1912 aligned at 215 mg/dl at a time corresponding to May 8, 2007 at 3:05 PM.
Using the foregoing GUI 1900 a treating physician can observe trends in the patient's treatment regimen. The treating physician can identify the bolus recommendations being made to the patient, as well as the amounts of insulin that the patient is having administered. Further, the treating physician can observe the effect of the insulin on the patient's bG measurements. The treating physician can use the depicted graph to explain to the patient trends in his or her treatment and where adjustments can be made.
It should be appreciated that the GUI 1900 described above is provided for example. The indicators are provided for example and not intended to be limiting.
As discussed above, the bolus calculator 22 a can be configured to determine if the patient is in a hypoglycemic state. That is, if the patient's bG levels are below a minimum threshold, the patient may be in a hypoglycemic state. In these scenarios, the bolus calculator 22 a may calculate a recommendation that includes a suggested amount of carbohydrates for the patient to ingest. When the bolus calculator 22 a determines the recommended amount of carbohydrates, the bolus calculator 22 a may display the recommendation to the patient on the display 16. In some embodiments, the bolus calculator 22 a is configured to generate an advice history record indicating that the patient ingested the recommended carbohydrate amount unless the patient provides input indicating otherwise. For example, if the patient is provided with the carbohydrate recommendation, and the patient does nothing, the bolus calculator 22 a can create the advice history record such that the carbohydrate amount equals the recommended amount. If, however, the patient provides input indicating that an alternative amount of carbohydrates was ingested or no carbohydrates were ingested, the bolus calculator 22 a can generate the advice history record based on the provided input. Alternatively if the patient chooses to document the amount of carbohydrates, the bolus calculator 22 a may default the carbohydrate field to the carbohydrate recommendation for confirmation or override by the patient.
1. A method for presenting a graphical user interface (GUI) for modifying medical data on a handheld diabetes management device, the method comprising:
receiving, by a bolus calculator, a blood glucose measure from a patient, where the bolus calculator is implemented as computer executable instructions executed by a computer processor of the handheld diabetes management device;
determining, by the bolus calculator, a recommended correction bolus amount value for a patient based in part of the blood glucose measure, wherein, as a correction bolus amount value, the recommended correction bolus amount value is indicative of a first amount of insulin to recommend to the patient to lower an elevated glucose level;
determining, by the bolus calculator, a recommended meal bolus amount value, wherein as a meal bolus amount value, the recommended meal bolus amount value is indicative of a second amount of insulin to recommend to the patient to counteract a carbohydrate intake documented by the patient;
presenting, by the handheld diabetes management device, the GUI on a display of the handheld diabetes management device;
presenting, by the handheld diabetes management device, the recommended correction bolus amount value determined by the bolus calculator in the GUI, where the recommended correction bolus amount value can be changed by an input to the GUI;
presenting, by the handheld diabetes management device, the recommended meal bolus amount value determined by the bolus calculator in the GUI where the recommended meal bolus amount value can be changed by an input to the GUI;
presenting, by the handheld diabetes management device, a total bolus amount value in the GUI, the total bolus amount value being equal to a sum of the correction bolus amount value and the meal bolus amount value;
receiving, by the handheld diabetes management device, a change to at least one of the recommended correction bolus amount value and the recommended meal bolus amount value from the patient, where the change is an input by the patient to the GUI;
generating, by the bolus calculator, an advice history record, where the advice history record includes the value for the recommended correction bolus amount presented on the GUI, the value for the recommended meal bolus amount presented on the GUI, the value for the total bolus amount presented on the GUI, a first indicator as to whether the recommended correction bolus amount was changed and a second indicator as to whether the recommended meal bolus amount was changed, where at least one of the first indicator and the second indicator is set to an affirmative value in response to receiving the change;
storing, by the bolus calculator, the advice history record on a computer-readable memory of the handheld diabetes management device.
2. The method of claim 1, wherein the recommended correction bolus amount is presented in a correction bolus amount modification field of the GUI.
receiving, by the handheld diabetes management device, a selection of the correction bolus amount modification field presented in the GUI;
receiving, by the handheld diabetes management device, an instruction to either increment or decrement the correction bolus amount value presented in the GUI by a predetermined value, wherein the instruction is the first input;
adjusting, by the bolus calculator, the recommended correction bolus amount value based on the instruction, wherein after being adjusted, the recommended correction bolus amount is provided as an adjusted correction bolus amount; and
presenting, by the handheld diabetes management device, the adjusted correction bolus amount value in the correction bolus amount modification field of the GUI in place of the recommended correction bolus amount value.
adjusting, by the bolus calculator, the total amount bolus value based on the adjusted correction bolus amount value, wherein after being adjusted, the total amount bolus value is provided as an adjusted total amount bolus value; and
presenting, by the handheld diabetes management device, the adjusted total amount bolus value in place of the total amount bolus value in the GUI.
5. The method of claim 2, wherein the recommended meal bolus amount is presented in a meal bolus amount modification field.
receiving, by the handheld diabetes management device, a selection of the meal bolus amount modification field;
receiving, by the handheld diabetes management device, an instruction to either increment or decrement the meal bolus amount value presented in the GUI by a predetermined value, wherein the instruction is the second input;
adjusting, by the bolus calculator, the recommended meal bolus amount based on the instruction, wherein after being adjusted, the recommended meal bolus amount is provided as an adjusted meal bolus amount; and
presenting, by the handheld diabetes management device, the adjusted meal bolus amount value in the meal bolus amount modification field of the GUI in place of the recommended meal bolus amount value.
adjusting, by the bolus calculator, the total amount bolus value based on the adjusted meal bolus amount value, wherein after being adjusted, the total amount bolus value is provided as an adjusted total amount bolus value; and
8. The method of claim 7, wherein the recommended correction bolus amount is presented in the correction bolus amount modification field and the recommended meal bolus amount is presented in the meal bolus amount modification field.
receiving, by the handheld diabetes management device, a first selection of the correction bolus amount modification field;
receiving, by the handheld diabetes management device, a first instruction to either increment or decrement the correction bolus amount value presented in the GUI by a predetermined value, wherein the first instruction is the first input;
adjusting, by the bolus calculator, the recommended correction bolus amount value based on the first instruction, wherein after being adjusted, the recommended correction bolus amount is provided as an adjusted correction bolus amount;
presenting, by the handheld diabetes management device, the adjusted correction bolus amount value in the correction bolus amount modification field of the GUI in place of the recommended correction bolus amount value;
receiving, by the handheld diabetes management device, a second selection of the meal bolus amount modification field of the GUI;
receiving, by the handheld diabetes management device, a second instruction to either increment or decrement the meal bolus amount value presented in the GUI by the predetermined value, wherein the second instruction is the second input;
adjusting, by the bolus calculator, the recommended meal bolus amount value based on the instruction, wherein after being adjusted, the recommended meal bolus amount value is provided as an adjusted meal bolus amount value; and
presenting, by the handheld diabetes management device, the adjusted meal bolus amount value in the meal bolus amount modification field in place of the recommended meal bolus amount value.
adjusting, by the bolus calculator, the total amount bolus value based on the adjusted meal bolus amount value and the adjusted correction bolus amount value, wherein after being adjusted, the total amount bolus value is provided as an adjusted total amount bolus value; and
11. A handheld diabetes management device having one or more processors and a non-transitory computer readable medium storing computer readable instructions, the computer readable instructions, when executed by the one or more processors, causing the handheld diabetes management device to perform operations comprising:
determining, by the bolus calculator, a recommended correction bolus amount value for a patient based in part of the blood glucose measure, wherein, as a correction bolus amount value, the recommended correction bolus amount value is indicative of a first amount of insulin to recommend to the patient to lower an elevated glucose;
determining, by the bolus calculator, a recommended meal bolus amount value based in part of the blood glucose measure, wherein as a meal bolus amount value, the recommended meal bolus amount value is indicative of a second amount of insulin to recommend to the patient to counteract a carbohydrate intake documented by the patient;
presenting, by the handheld diabetes management device, a graphical user interface (GUI) on a display of the handheld diabetes management device;
presenting, by the handheld diabetes management device, the recommended correction bolus amount value determined by the bolus calculator in the GUI, where the recommended connection bolus amount value can be changed by an input to the GUI;
receiving, by the handheld diabetes management device, a change to at least one of the recommended correction bolus amount value and the recommended meal bolus amount value;
generating, by the bolus calculator, an advice history record where the advice history record includes the value for the recommended correction bolus amount presented on the GUI, the value for the recommended meal bolus amount presented on the GUI, the value for the total bolus amount presented on the GUI, a first indicator as to whether the recommended correction bolus amount was changed and a second indicator as to whether the recommended meal bolus amount was changed, where at least one of the first indicator and the second indicator is set to an affirmative value in response to receiving a change;
12. The device of claim 11, wherein the recommended correction bolus amount is presented in a correction bolus amount modification field of the GUI.
14. The device of claim 13, wherein the operations further comprise:
15. The device of claim 11, wherein the recommended meal bolus amount is presented in a meal bolus amount modification field.
16. The device of claim 15, wherein the operations further comprise:
17. The device of claim 16, wherein the operations further comprise:
18. The device of claim 17, wherein the recommended correction bolus amount is presented in the correction bolus amount modification field and the recommended meal bolus amount is presented in the meal bolus amount modification field.
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