US5822715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diabetes management system and method for controlling blood glucose
Assignee: Robert Bosch Healthcare Systems Inc
•
Filing: 1997-04-18
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Granted: 1998-10-13
•
Expires: 2017-04-18
Abstract
Abstract A diabetes management system for predicting a future blood glucose value of a patient and for recommending a corrective action to the patient when the future blood glucose value lies outside of a target range. The system includes a patient-operated apparatus for measuring blood glucose values and for storing data relating to insulin doses administered to the patient. The apparatus predicts the patient's future blood glucose value based upon the patient's current blood glucose value, the fraction of insulin action remaining from the insulin doses, and the patient's insulin sensitivity. The apparatus also determines the corrective action for the patient when the predicted blood glucose value lies outside of a target range. The system also includes a physician computer in communication with the apparatus for receiving the blood glucose values and insulin dose data and for calculating an adjusted insulin sensitivity for use in subsequent predictions.
Inventors
- 👤 David R. L. Worthington
- 👤 Stephen J. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:30
CPC Classifications
G; G16; G16H; G16H20/00; G16H20/10; G16H20/13; A; A61; A61B; A61B5/00; A61B5/41; A61B5/411; A61B5/68; A61B5/6887; A61B5/6896; A61B5/72; A61B5/7271; A61B5/7275; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/48785; G01N33/48792; G09; G09B; G09B19/00; G16H10/00; G16H10/40; G16H20/30; G16H50/00; G16H50/50; A61B5/0002; A61B5/145; A61B5/14532; G01N35/00; G01N35/00584; G01N35/00722; G01N2035/00891; G16H20/17; G16H20/60; G16H40/00; G16H40/60; G16H40/63; G16H50/30; G16H70/00; G16H70/20; Y; Y10; Y10S; Y10S128/00; Y10S128/92
Claims Analysis
Total Claims: 54
Claim 1
Independent Claim
235 words
An apparatus for assisting a patient having diabetes mellitus in controlling blood glucose, said apparatus comprising: a) an input means for entering a blood glucose value G(t d ) representative of a blood glucose concentration of the patient at time t d and for entering an insulin dose value representative of an insulin dose administered to the patient prior to time t d ; b) a memory means for storing an insulin sensitivity value representative of an insulin sensitivity of the patient and for storing information for determining an insulin action value F k (t d ) representative of a fraction of insulin action remaining at time t d from said insulin dose; c) a processor connected to said input means and said memory means for determining said insulin action value F k (t d ) and for determining a future blood glucose value G(t j ) representative of an expected blood glucose concentration of the patient at time t j , wherein said processor determines said future blood glucose value G(t j ) in dependence upon said blood glucose value G(t d ), said insulin dose value, said insulin sensitivity value, and said insulin action value F k (t d ); and d) a display means connected to said processor for displaying said future blood glucose value G(t j ), thereby enabling the patient to take timely corrective action to prevent hypoglycemia or hyperglycemia.
Claim 2
Independent Claim
235 words
An apparatus for assisting a patient having diabetes mellitus in controlling blood glucose, said apparatus comprising: a) an input means for entering a blood glucose value G(t d ) representative of a blood glucose concentration of the patient at time t d and for entering an insulin dose value representative of an insulin dose administered to the patient prior to time t d ; b) a memory means for storing an insulin sensitivity value representative of an insulin sensitivity of the patient and for storing information for determining an insulin action value F k (t d ) representative of a fraction of insulin action remaining at time t d from said insulin dose; c) a processor connected to said input means and said memory means for determining said insulin action value F k (t d ) and for determining a future blood glucose value G(t j ) representative of an expected blood glucose concentration of the patient at time t j , wherein said processor determines said future blood glucose value G(t j ) in dependence upon said blood glucose value G(t d ), said insulin dose value, said insulin sensitivity value, and said insulin action value F k (t d ); and d) a display means connected to said processor for displaying said future blood glucose value G(t j ), thereby enabling the patient to take timely corrective action to prevent hypoglycemia or hyperglycemia.
Claim 3
Dependent Claim
86 words
The apparatus of claim 1, wherein said memory means includes means for storing maximum and minimum values defining a target blood glucose range of the patient, said processor includes means for determining if said future blood glucose value G(t j ) lies outside of said target range and means for determining said corrective action for the patient when said future blood glucose value G(t j ) lies outside of said target range, and said display means includes means for recommending said corrective action to the patient.
Claim 4
Dependent Claim
70 words
The apparatus of claim 2, wherein said memory means further includes means for storing a target blood glucose value of the patient, said corrective action comprises an administration of a supplemental insulin dose, and said processor further comprises means for determining said supplemental insulin dose in dependence upon said insulin sensitivity value and a difference between said future blood glucose value G(t j ) and said target blood glucose value.
Claim 5
Dependent Claim
67 words
The apparatus of claim 2, wherein said memory means further includes means for storing a target blood glucose value of the patient, said corrective action comprises a consumption of a number of grams of carbohydrates, and said processor further comprises means for determining said number of grams in dependence upon a difference between said future blood glucose value G(t j ) and said target blood glucose value.
Claim 6
Dependent Claim
75 words
The apparatus of claim 1, wherein said memory means further includes means for storing a hypoglycemic value indicative of a hypoglycemic threshold of the patient, said processor includes means for determining if said future blood glucose value G(t j ) lies below said hypoglycemic value, and said apparatus further comprises audio means connected to said processor for audibly alerting the patient when said future blood glucose value G(t j ) lies below said hypoglycemic value.
Claim 7
Dependent Claim
40 words
The apparatus of claim 1, wherein said input means comprises a blood glucose measuring means for measuring a blood sample of the patient and for producing said blood glucose value G(t d ) from a measurement of said blood sample.
Claim 8
Dependent Claim
45 words
The apparatus of claim 1, wherein said insulin dose has an insulin type, said input means includes means for entering said insulin type, and said processor includes means for determining said insulin action value F k (t d ) in dependence upon said insulin type.
Claim 9
Dependent Claim
21 words
The apparatus of claim 7, wherein said insulin type is selected from the group consisting of regular insulin and lispro insulin.
Claim 10
Dependent Claim
62 words
The apparatus of claim 1, wherein said processor includes means for determining an insulin action value F k (t j ) representative of a fraction of insulin action remaining at time t j from said insulin dose and means for determining said future blood glucose value G(t j ) in further dependence upon said insulin action value F k (t j ).
Claim 11
Dependent Claim
40 words
The apparatus of claim 1, wherein said processor includes means for determining an ultimate time point at which said insulin dose will have no insulin action remaining and means for setting time t j equal to said ultimate time point.
Claim 12
Dependent Claim
49 words
The apparatus of claim 1, wherein said processor includes means for determining a plurality of future blood glucose values representative of a corresponding plurality of expected blood glucose concentrations of the patient, and wherein said display means includes means for displaying said future blood glucose values in graphical form.
Claim 13
Dependent Claim
34 words
The apparatus of claim 1, further comprising a communication means connected to said processor for establishing a communication link between said apparatus and a healthcare provider computer and for transmitting and receiving data therebetween.
Claim 14
Dependent Claim
22 words
The apparatus of claim 12, wherein said communication means comprises a modem means for establishing said communication link through a communication network.
Claim 15
Dependent Claim
22 words
The apparatus of claim 12, wherein said communication means comprises an input/output port for establishing said communication link through a connection cord.
Claim 16
Independent Claim
253 words
A system for assisting a patient having diabetes mellitus in controlling blood glucose, said system comprising: a) an input means for entering a blood glucose value G(t d ) representative of a blood glucose concentration of the patient at time t d and for entering an insulin dose value representative of an insulin dose administered to the patient prior to time t d ; b) a memory means for storing maximum and minimum values defining a target blood glucose range of the patient, an insulin sensitivity value representative of an insulin sensitivity of the patient, and information for determining an insulin action value F k (t d ) representative of a fraction of insulin action remaining at time t d from said insulin dose; c) a processor connected to said input means and said memory means for determining said insulin action value F k (t d ), for determining a future blood glucose value G(t j ) representative of an expected blood glucose concentration of the patient at time t j , and for determining a corrective action for the patient when said future blood glucose value G(t j ) lies outside of said target range, wherein said processor determines said future blood glucose value G(t j ) in dependence upon said blood glucose value G(t d ), said insulin dose value, said insulin sensitivity value, and said insulin action value F k (t d ); and d) a display means connected to said processor for recommending said corrective action to the patient.
Claim 17
Independent Claim
253 words
A system for assisting a patient having diabetes mellitus in controlling blood glucose, said system comprising: a) an input means for entering a blood glucose value G(t d ) representative of a blood glucose concentration of the patient at time t d and for entering an insulin dose value representative of an insulin dose administered to the patient prior to time t d ; b) a memory means for storing maximum and minimum values defining a target blood glucose range of the patient, an insulin sensitivity value representative of an insulin sensitivity of the patient, and information for determining an insulin action value F k (t d ) representative of a fraction of insulin action remaining at time t d from said insulin dose; c) a processor connected to said input means and said memory means for determining said insulin action value F k (t d ), for determining a future blood glucose value G(t j ) representative of an expected blood glucose concentration of the patient at time t j , and for determining a corrective action for the patient when said future blood glucose value G(t j ) lies outside of said target range, wherein said processor determines said future blood glucose value G(t j ) in dependence upon said blood glucose value G(t d ), said insulin dose value, said insulin sensitivity value, and said insulin action value F k (t d ); and d) a display means connected to said processor for recommending said corrective action to the patient.
Claim 18
Dependent Claim
70 words
The system of claim 15, wherein said memory means further includes means for storing a target blood glucose value of the patient, said corrective action comprises an administration of a supplemental insulin dose, and said processor further comprises means for determining said supplemental insulin dose in dependence upon said insulin sensitivity value and a difference between said future blood glucose value G(t j ) and said target blood glucose value.
Claim 19
Dependent Claim
67 words
The system of claim 15, wherein said memory means further includes means for storing a target blood glucose value of the patient, said corrective action comprises a consumption of a number of grams of carbohydrates, and said processor further comprises means for determining said number of grams in dependence upon a difference between said future blood glucose value G(t j ) and said target blood glucose value.
Claim 20
Dependent Claim
75 words
The system of claim 15, wherein said memory means further includes means for storing a hypoglycemic value indicative of a hypoglycemic threshold of the patient, said processor includes means for determining if said future blood glucose value G(t j ) lies below said hypoglycemic value, and said system further comprises audio means connected to said processor for audibly alerting the patient when said future blood glucose value G(t j ) lies below said hypoglycemic value.
Claim 21
Dependent Claim
40 words
The system of claim 15, wherein said input means comprises a blood glucose measuring means for measuring a blood sample of the patient and for producing said blood glucose value G(t d ) from a measurement of said blood sample.
Claim 22
Dependent Claim
45 words
The system of claim 15, wherein said insulin dose has an insulin type, said input means includes means for entering said insulin type, and said processor includes means for determining said insulin action value F k (t d ) in dependence upon said insulin type.
Claim 23
Dependent Claim
21 words
The system of claim 20, wherein said insulin type is selected from the group consisting of regular insulin and lispro insulin.
Claim 24
Dependent Claim
62 words
The system of claim 15, wherein said processor includes means for determining an insulin action value F k (t j ) representative of a fraction of insulin action remaining at time t j from said insulin dose and means for determining said future blood glucose value G(t j ) in further dependence upon said insulin action value F k (t j ).
Claim 25
Dependent Claim
40 words
The system of claim 15, wherein said processor includes means for determining an ultimate time point at which said insulin dose will have no insulin action remaining and means for setting time t j equal to said ultimate time point.
Claim 26
Dependent Claim
49 words
The system of claim 15, wherein said processor includes means for determining a plurality of future blood glucose values representative of a corresponding plurality of expected blood glucose concentrations of the patient, and wherein said display means includes means for displaying said future blood glucose values in graphical form.
Claim 27
Dependent Claim
68 words
The system of claim 15, wherein said input means includes means for entering a plurality of blood glucose values and a plurality of insulin dose values, and said system further comprises a computing means in communication with said processor for receiving said blood glucose values and said insulin dose values and for calculating from said blood glucose values and said insulin dose values an adjusted insulin sensitivity value.
Claim 28
Dependent Claim
56 words
The system of claim 25, wherein said input means, said memory means, said processor, and said display means are included in a patient-operated apparatus, said computing means comprises a healthcare provider computer, and said apparatus includes a communication means connected to said processor for establishing a communication link between said apparatus and said healthcare provider computer.
Claim 29
Dependent Claim
22 words
The system of claim 26, wherein said communication means comprises a modem means for establishing said communication link through a communication network.
Claim 30
Dependent Claim
22 words
The system of claim 26, wherein said communication means comprises an input/output port for establishing said communication link through a connection cord.
Claim 31
Independent Claim
269 words
A method for assisting a patient having diabetes mellitus in controlling blood glucose, said method comprising the following steps: a) providing the patient with an apparatus for determining a future blood glucose value G(t j ) representative of an expected blood glucose concentration of the patient at time t j , wherein said apparatus comprises a memory, an input means for entering a blood glucose value G(t d ) representative of a blood glucose concentration of the patient at time t d and for entering an insulin dose value representative of an insulin dose administered to the patient prior to time t d , a display, and a processor connected to said memory, said input means, and said display; b) storing in said memory an insulin sensitivity value representative of an insulin sensitivity of the patient; c) storing in said memory information for determining an insulin action value F k (t d ) representative of a fraction of insulin action remaining at time t d from said insulin dose; d) entering in said processor said insulin dose value and said blood glucose value G(t d ); e) determining in said processor said insulin action value F k (t d ); f) determining in said processor said future blood glucose value G(t j ) in dependence upon said blood glucose value G(t d ), said insulin dose value, said insulin sensitivity value, and said insulin action value F k (t d ); and g) displaying said future blood glucose value G(t j ) on said display, thereby enabling the patient to take timely corrective action to prevent hypoglycemia or hyperglycemia.
Claim 32
Independent Claim
269 words
A method for assisting a patient having diabetes mellitus in controlling blood glucose, said method comprising the following steps: a) providing the patient with an apparatus for determining a future blood glucose value G(t j ) representative of an expected blood glucose concentration of the patient at time t j , wherein said apparatus comprises a memory, an input means for entering a blood glucose value G(t d ) representative of a blood glucose concentration of the patient at time t d and for entering an insulin dose value representative of an insulin dose administered to the patient prior to time t d , a display, and a processor connected to said memory, said input means, and said display; b) storing in said memory an insulin sensitivity value representative of an insulin sensitivity of the patient; c) storing in said memory information for determining an insulin action value F k (t d ) representative of a fraction of insulin action remaining at time t d from said insulin dose; d) entering in said processor said insulin dose value and said blood glucose value G(t d ); e) determining in said processor said insulin action value F k (t d ); f) determining in said processor said future blood glucose value G(t j ) in dependence upon said blood glucose value G(t d ), said insulin dose value, said insulin sensitivity value, and said insulin action value F k (t d ); and g) displaying said future blood glucose value G(t j ) on said display, thereby enabling the patient to take timely corrective action to prevent hypoglycemia or hyperglycemia.
Claim 33
Dependent Claim
64 words
The method of claim 29, further comprising the step of determining in said processor an insulin action value F k (t j ) representative of a fraction of insulin action remaining at time t j from said insulin dose, and wherein said future blood glucose value G(t j ) is determined in further dependence upon said insulin action value F k (t j ).
Claim 34
Dependent Claim
54 words
The method of claim 29, wherein the step of determining said future blood glucose value G(t j ) is preceded by the steps of determining in said processor an ultimate time point at which said insulin dose will have no insulin action remaining and setting time t j equal to said ultimate time point.
Claim 35
Dependent Claim
47 words
The method of claim 29, further comprising the steps of determining in said processor a plurality of future blood glucose values representative of a corresponding plurality of expected blood glucose concentrations of the patient and displaying said future blood glucose values in graphical form on said display.
Claim 36
Dependent Claim
79 words
The method of claim 29, further comprising the steps of storing in said memory maximum and minimum values defining a target blood glucose range of the patient, determining in said processor if said future blood glucose value G(t j ) lies outside of said target range, determining in said processor said corrective action for the patient when said future blood glucose value G(t j ) lies outside of said target range, and recommending said corrective action on said display.
Claim 37
Dependent Claim
71 words
The method of claim 33, wherein said corrective action comprises an administration of a supplemental insulin dose, and said method further comprises the steps of storing in said memory a target blood glucose value of the patient and determining in said processor said supplemental insulin dose in dependence upon said insulin sensitivity value and a difference between said future blood glucose value G(t j ) and said target blood glucose value.
Claim 38
Dependent Claim
68 words
The method of claim 33, wherein said corrective action comprises a consumption of a number of grams of carbohydrates, and said method further comprises the steps of storing in said memory a target blood glucose value of the patient and determining in said processor said number of grams in dependence upon a difference between said future blood glucose value G(t j ) and said target blood glucose value.
Claim 39
Dependent Claim
62 words
The method of claim 29, further comprising the steps of storing in said memory a hypoglycemic value indicative of a hypoglycemic threshold of the patient, determining in said processor if said future blood glucose value G(t j ) lies below said hypoglycemic value, and audibly alerting the patient when said future blood glucose value G(t j ) lies below said hypoglycemic value.
Claim 40
Dependent Claim
57 words
The method of claim 29, wherein said input means comprises a blood glucose meter and the step of entering said blood glucose value G(t d ) comprises the steps of measuring a blood sample of the patient with said glucose meter and producing said blood glucose value G(t d ) from a measurement of said blood sample.
Claim 41
Dependent Claim
45 words
The method of claim 29, wherein said insulin dose has an insulin type, said method further comprises the step of entering said insulin type in said processor, and said insulin action value F k (t d ) is determined in dependence upon said insulin type.
Claim 42
Dependent Claim
21 words
The method of claim 38, wherein said insulin type is selected from the group consisting of regular insulin and lispro insulin.
Claim 43
Independent Claim
308 words
A method for assisting a patient having diabetes mellitus in controlling blood glucose, said method comprising the following steps: a) providing the patient with an apparatus for determining a future blood glucose value G(t j ) representative of an expected blood glucose concentration of the patient at time t j , wherein said apparatus comprises a memory, an input means for entering a blood glucose value G(t d ) representative of a blood glucose concentration of the patient at time t d and for entering an insulin dose value representative of an insulin dose administered to the patient prior to time t d , a display, and a processor connected to said memory, said input means, and said display; b) storing in said memory an insulin sensitivity value representative of an insulin sensitivity of the patient, information for determining an insulin action value F k (t d ) representative of a fraction of insulin action remaining at time t d from said insulin dose, and maximum and minimum values defining a target blood glucose range of the patient; c) entering in said processor said insulin dose value and said blood glucose value G(t d ); d) determining in said processor said insulin action value F k (t d ); e) determining in said processor said future blood glucose value G(t j ) in dependence upon said blood glucose value G(t d ), said insulin dose value, said insulin sensitivity value, and said insulin action value F k (t d ); f) determining in said processor if said future blood glucose value G(t j ) lies outside of said target range; g) determining in said processor a corrective action for the patient when said future blood glucose value G(t j ) lies outside of said target range; and h) recommending said corrective action to the patient on said display.
Claim 44
Independent Claim
308 words
A method for assisting a patient having diabetes mellitus in controlling blood glucose, said method comprising the following steps: a) providing the patient with an apparatus for determining a future blood glucose value G(t j ) representative of an expected blood glucose concentration of the patient at time t j , wherein said apparatus comprises a memory, an input means for entering a blood glucose value G(t d ) representative of a blood glucose concentration of the patient at time t d and for entering an insulin dose value representative of an insulin dose administered to the patient prior to time t d , a display, and a processor connected to said memory, said input means, and said display; b) storing in said memory an insulin sensitivity value representative of an insulin sensitivity of the patient, information for determining an insulin action value F k (t d ) representative of a fraction of insulin action remaining at time t d from said insulin dose, and maximum and minimum values defining a target blood glucose range of the patient; c) entering in said processor said insulin dose value and said blood glucose value G(t d ); d) determining in said processor said insulin action value F k (t d ); e) determining in said processor said future blood glucose value G(t j ) in dependence upon said blood glucose value G(t d ), said insulin dose value, said insulin sensitivity value, and said insulin action value F k (t d ); f) determining in said processor if said future blood glucose value G(t j ) lies outside of said target range; g) determining in said processor a corrective action for the patient when said future blood glucose value G(t j ) lies outside of said target range; and h) recommending said corrective action to the patient on said display.
Claim 45
Dependent Claim
64 words
The method of claim 40, further comprising the step of determining in said processor an insulin action value F k (t j ) representative of a fraction of insulin action remaining at time t j from said insulin dose, and wherein said future blood glucose value G(t j ) is determined in further dependence upon said insulin action value F k (t j ).
Claim 46
Dependent Claim
54 words
The method of claim 40, wherein the step of determining said future blood glucose value G(t j ) is preceded by the steps of determining in said processor an ultimate time point at which said insulin dose will have no insulin action remaining and setting time t j equal to said ultimate time point.
Claim 47
Dependent Claim
47 words
The method of claim 40, further comprising the steps of determining in said processor a plurality of future blood glucose values representative of a corresponding plurality of expected blood glucose concentrations of the patient and displaying said future blood glucose values in graphical form on said display.
Claim 48
Dependent Claim
71 words
The method of claim 40, wherein said corrective action comprises an administration of a supplemental insulin dose, and said method further comprises the steps of storing in said memory a target blood glucose value of the patient and determining in said processor said supplemental insulin dose in dependence upon said insulin sensitivity value and a difference between said future blood glucose value G(t j ) and said target blood glucose value.
Claim 49
Dependent Claim
68 words
The method of claim 40, wherein said corrective action comprises a consumption of a number of grams of carbohydrates, and said method further comprises the steps of storing in said memory a target blood glucose value of the patient and determining in said processor said number of grams in dependence upon a difference between said future blood glucose value G(t j ) and said target blood glucose value.
Claim 50
Dependent Claim
62 words
The method of claim 40, further comprising the steps of storing in said memory a hypoglycemic value indicative of a hypoglycemic threshold of the patient, determining in said processor if said future blood glucose value G(t j ) lies below said hypoglycemic value, and audibly alerting the patient when said future blood glucose value G(t j ) lies below said hypoglycemic value.
Claim 51
Dependent Claim
57 words
The method of claim 40, wherein said input means comprises a blood glucose meter and the step of entering said blood glucose value G(t d ) comprises the steps of measuring a blood sample of the patient with said glucose meter and producing said blood glucose value G(t d ) from a measurement of said blood sample.
Claim 52
Dependent Claim
46 words
The method of claim 40, wherein said insulin dose has an insulin type, said method further comprises the steps of entering said insulin type in said processor, and wherein said insulin action value F k (t d ) is determined in dependence upon said insulin type.
Claim 53
Dependent Claim
21 words
The method of claim 48, wherein said insulin type is selected from the group consisting of regular insulin and lispro insulin.
Claim 54
Dependent Claim
53 words
The method of claim 40, further comprising the steps of entering in said processor a plurality of blood glucose values and a plurality of insulin dose values, determining from said blood glucose values and said insulin dose values an adjusted insulin sensitivity value, and storing said adjusted insulin sensitivity value in said memory.
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