Insulin pump having selectable insulin absorption models
Methods of estimating human insulin absorption for use in an insulin pump are disclosed. A method includes prompting a user to select between a first insulin absorption model and a second insulin absorption model. The method also includes prompting a user to provide at least one model parameter. The method further includes forming an applied insulin absorption model from the selected insulin absorption model and the at least one model parameter.
1 . A method of estimating human insulin absorption for use in an insulin pump, the method comprising:
prompting a user to select between a first insulin absorption model and a second insulin absorption model;
prompting a user to provide at least one model parameter; and
forming an applied insulin absorption model from the selected insulin absorption model and the at least one model parameter.
2 . The method of claim 1 , further comprising employing the applied insulin absorption model to calculate an insulin level of the user.
3 . The method of claim 2 , wherein employing the applied insulin absorbing model to calculate the insulin level of the user includes applying the equation
Current
IOB
=
Initial
Bolus
Amount
*
(
Total
Time
+
Start
Time
-
Elapsed
Time
)
Duration
of
Activity
.
4 . The method of claim 1 , wherein the first insulin absorption model is linear.
5 . The method of claim 1 , wherein the second insulin absorption model is nonlinear.
6 . The method of claim 1 , further comprising providing a third insulin absorption model, wherein the third insulin absorption model is a customizable insulin absorption model.
7 . The method of claim 1 , wherein the at least one parameter includes a start time.
8 . The method of claim 1 , wherein the at least one parameter includes a tail time.
9 . The method of claim 8 , further comprising employing the applied insulin absorption model to calculate an insulin level of the user within the tail time by employing the equation
Current
IOB
=
0.05
*
Initial
Bolus
Amount
*
(
Elapsed
Time
Since
Tail
Time
Started
)
Total
Tail
Time
.
10 . The method of claim 8 , further comprising employing the applied insulin absorption model to calculate an insulin level of the user within the tail time by employing the equation
Current
IOB
=
Tail
Threshold
%
*
Initial
Bolus
Amount
*
(
Elapsed
Time
Since
Tail
Time
Started
)
Total
Tail
Time
11 . The method of claim 1 , wherein the at least one parameter includes a duration.
12 . The method of claim 1 , wherein prompting the user to select between the first and second insulin absorption models is performed by the insulin pump.
13 . The method of claim 1 , wherein prompting the user to select between the first and second insulin absorption models is performed by a computer interfaced with the insulin pump.
14 . The method of claim 1 , wherein the insulin level is the current insulin level of the user.
15 . The method of claim 1 , further comprising modifying the applied insulin absorption model based on user entered data.
16 . The method of claim 15 , wherein the user entered data is selected from a group consisting of:
age;
weight;
sex;
type of insulin;
fitness level; and
body mass index.
17 . The method of claim 1 , further comprising modifying the applied insulin absorption model based on non-user entered data.
18 . The method of claim 17 , wherein the non-user entered data includes bolus size.
19 . An insulin pump comprising:
a pump mechanism;
a memory configured to store a first insulin absorption model, a second insulin absorption model, and at least one model parameter;
a programmable circuit arranged to control the pump mechanism and operatively connected to the memory, the programmable circuit programmed to:
prompt a user to select between the first insulin absorption model and the second insulin absorption model;
prompt a user to provide the at least one model parameter; and
form an applied insulin absorption model from the selected insulin absorption model and the at least one model parameter.
20 . The insulin pump of claim 19 , wherein the programmable circuit is further programmed to employ the applied insulin absorption model to calculate an insulin level of the user.
21 . The insulin pump of claim 19 , wherein employing the applied insulin absorbing model to calculate the insulin level of the user applies the equation
Current
IOB
=
Initial
Bolus
Amount
*
(
Total
Time
+
Start
Time
-
Elapsed
Time
)
Duration
of
Activity
.
22 . The insulin pump of claim 19 , wherein the at least one model parameter includes a start time.
23 . The insulin pump of claim 19 , wherein the at least one model parameter includes a tail time.
24 . The insulin pump of claim 19 , wherein the at least one model parameter includes a duration.
25 . The insulin pump of claim 19 , wherein the first insulin absorption model is linear.
26 . The insulin pump of claim 19 , wherein the second insulin absorption model is nonlinear.
27 . The insulin pump of claim 19 , wherein the programmable circuit is further programmed to modify the applied insulin absorption model based on user entered data.
28 . The insulin pump of claim 19 , wherein the programmable circuit is further programmed to modify the applied insulin absorption model based on non-user entered data.
29 . A method of estimating human insulin absorption for use in an insulin pump, the method comprising:
prompting a user to select between a linear absorption model and a nonlinear insulin absorption model;
prompting a user to provide a duration of the insulin absorption;
prompting a user to provide a start time;
prompting a user to provide a tail time;
forming an applied insulin absorption model from the selected insulin absorption model, the duration, the start time, and the tail time;
employing the applied insulin absorption model to calculate an insulin level of the user.
30 . The method of claim 29 , wherein prompting the user to select between the linear absorption model and the nonlinear absorption model is performed by the insulin pump.