Patent Document ID: 10154804
Application ID: 11700666
Patent Flag: 1

Claim One:
1. An infusion pump for infusing insulin from a reservoir into a body of a user, the infusion pump comprising: a housing; a drive mechanism contained within the housing and operatively coupled to the reservoir to deliver insulin from the reservoir through a fluid path into the body of the user; and a controller contained within the housing, wherein the controller optimizes delivery of insulin into the body of the user to cover a planned meal by, prior to consumption of the meal by the user, (a) obtaining from the user a carbohydrate count for the meal, a meal-type indicator for the meal, an insulin amount to cover the meal, and a plurality of insulin delivery patterns for delivery of said insulin amount to cover the meal, (b) generating a respective predicted post-prandial glucose concentration profile for each one of said plurality of insulin delivery patterns based on the carbohydrate count, the meal-type indicator, the insulin amount, and a meal appearance rate, and (c) determining whether any one of said respective predicted post-prandial glucose concentration profiles is acceptable, wherein said determination is made solely by the controller and independently of the user, wherein the controller determines acceptability of the respective predicted post-prandial glucose concentration profiles by comparing each of said respective predicted post-prandial glucose concentration profiles to a predetermined glucose profile and selecting one of the respective predicted post-prandial glucose concentration profiles that is closest to the predetermined glucose profile within an acceptable range of deviation, wherein the carbohydrate count is equal to the total amount of carbohydrates contained in the meal, wherein said total amount of carbohydrates appear as glucose in the user's blood plasma in accordance with a predetermined meal appearance rate curve having a peak, wherein the meal-type indicator corresponds to a predetermined amount of time calculated as a difference between a first point in time when the meal is to be consumed and a second point in time when said peak is reached, wherein said meal appearance rate curve is defined by the relation R A ⁡ ( t ) = C H V G * τ m 2 * e - t τ m , wherein R A (t) is the meal appearance rate, V G is glucose distribution volume, C H is the carbohydrate count, and τ m is a time constant for the meal, and wherein V G , C H , and τ m are predetermined inputs based on the meal, and wherein the controller generates commands that instruct the drive mechanism to infuse the insulin amount into the body of the user according to the delivery pattern that corresponds to the selected glucose profile.