Systems and methods for automated insulin delivery response to inaccurate or missed glucose values
AssigneeTandem Diabetes Care, Inc.
InventorsJacob Kearns, Michael Michaud, Geoffrey A. Kruse, Garrett Marin, Paul Harris, Thomas R. Ulrich, Brendan Nichols
Life of this patent
Estimating the term…
Abstract
Disclosed herein are systems and methods incorporating an ambulatory infusion pump and a CGM. These systems that can include software and related methods to provide improved automated insulin delivery algorithms that enable the algorithms to safely continue delivering insulin for some time periods of missing or known inaccurate glucose values.
Claims20
An ambulatory infusion pump system, comprising:
- a pump mechanism configured to facilitate delivery of medicament to a user;
- a communications device adapted to receive glucose levels from a continuous glucose monitor (CGM);
- and
- at least one processor functionally linked to the pump mechanism and the communications device, the at least one processor configured to:
- while automatically determining and delivering medicament doses to the user based on glucose levels received from the CGM, detect a CGM data event;
- and
- based on detecting the CGM data event, execute a safety mechanism, wherein the safety mechanism determines a current glucose value noise based on recent glucose levels received from the CGM and a variance between the glucose levels and predicted glucose levels, and reduces an amount of one or more medicament doses or delays delivery of one or more medicament doses if the current glucose value noise is above a threshold.
A method comprising:
- while automatically determining and delivering medicament doses to a user based on glucose levels received from a continuous glucose monitor (CGM), detect a CGM data event;
- and
- based on detecting the CGM data event, execute a safety mechanism, wherein the safety mechanism determines a current glucose value noise based on recent glucose levels received from the CGM and a variance between the glucose levels and predicted glucose levels, and reduces an amount of one or more medicament doses or delays delivery of one or more medicament doses if the current glucose value noise is above a threshold.
A non-transitory computer-readable medium having instructions stored thereon that, when executed by at least one computing device, cause the at least one computing device to perform operations comprising:
- while automatically determining and delivering medicament doses to a user based on glucose levels received from a continuous glucose monitor (CGM), detect a CGM data event;
- and based on detecting the CGM data event, execute a safety mechanism, wherein the safety mechanism determines a current glucose value noise based on recent glucose levels received from the CGM and a variance between the glucose levels and predicted glucose levels, and reduces an amount of one or more medicament doses or delays delivery of one or more medicament doses if the current glucose value noise is above a threshold.
Dependencies are inferred from the claim text.