US 11,883,632 B2
Safety constraints for a control algorithm based drug delivery system
Jason O'Connor, Acton, MA (US); Joon Bok Lee, Acton, MA (US); Trang Ly, Concord, MA (US); Yibin Zheng, Hartland, WI (US); Thomas Arnold Peyser, Menlo Park, CA (US); and Jennifer Lena Schneider, Palo Alto, CA (US)
Assigned to INSULET CORPORATION, Acton, MA (US)
Filed by INSULET CORPORATION, Acton, MA (US)
Filed on Jan. 25, 2023, as Appl. No. 18/159,353.
Application 18/159,353 is a continuation of application No. 16/402,753, filed on May 3, 2019, granted, now 11,565,043.
Claims priority of provisional application 62/667,118, filed on May 4, 2018.
Prior Publication US 2023/0181824 A1, Jun. 15, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G08B 21/04 (2006.01); A61M 5/172 (2006.01); A61B 5/145 (2006.01); A61M 5/142 (2006.01); A61M 5/145 (2006.01); A61B 5/00 (2006.01)
CPC A61M 5/1723 (2013.01) [A61B 5/14532 (2013.01); A61M 5/145 (2013.01); A61M 5/14244 (2013.01); A61B 5/486 (2013.01); A61B 5/6832 (2013.01); A61M 2005/14208 (2013.01); A61M 2005/14252 (2013.01); A61M 2205/18 (2013.01); A61M 2205/52 (2013.01); A61M 2230/201 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a memory operable to store programming code;
a communication device operable to communicate with a glucose sensor;
a processor coupled to the memory and communication circuitry, wherein the processor is operable to execute the programming code stored in the memory, and further operable to:
receive glucose concentration values from the glucose sensor;
detect a decrease in the received glucose concentration values;
attenuate medication delivery in response to the detected decrease in the received glucose concentration values;
determine that an external disturbance is causing the decrease in the received glucose concentration values;
determine that the attenuated medication delivery is not being attenuated fast enough to maintain glucose concentration values above a hypoglycemic threshold; and
in response to the determination that the attenuated medication delivery is not being attenuated fast enough, implement a response that further reduces medication delivery.