US 11,878,151 B2
Intelligent medication delivery systems and methods for dose setting and dispensing monitoring
Sean Saint, San Diego, CA (US); Jack Pryor, Ladera Ranch, CA (US); and Arnold Holmquist, Dana Point, CA (US)
Assigned to Medtronic MiniMed, Inc., Northridge, CA (US)
Filed by Medtronic MiniMed, Inc., Northridge, CA (US)
Filed on Jun. 22, 2022, as Appl. No. 17/846,406.
Application 17/846,406 is a continuation of application No. 17/156,681, filed on Jan. 25, 2021, granted, now 11,369,743, issued on Jun. 28, 2022.
Application 17/156,681 is a continuation of application No. 16/407,046, filed on May 8, 2019, granted, now 10,898,653, issued on Jan. 26, 2021.
Claims priority of provisional application 62/668,723, filed on May 8, 2018.
Prior Publication US 2022/0347390 A1, Nov. 3, 2022
Int. Cl. G08B 27/00 (2006.01); A61M 5/315 (2006.01); G08B 21/18 (2006.01); G08B 21/02 (2006.01); A61K 38/28 (2006.01)
CPC A61M 5/3155 (2013.01) [G08B 21/02 (2013.01); G08B 21/182 (2013.01); G08B 21/185 (2013.01); A61K 38/28 (2013.01); A61M 2205/18 (2013.01); A61M 2205/3317 (2013.01); A61M 2205/3584 (2013.01); A61M 2205/3592 (2013.01); A61M 2205/50 (2013.01); A61M 2205/502 (2013.01); A61M 2205/52 (2013.01); A61M 2230/201 (2013.01); A61M 2230/63 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multi-channel pattern encoder for an insulin injection device, comprising:
a processing unit;
a voltage source electrically coupled to an input of the processing unit via a pull-up resistor configured to pull the input of the processing unit to a high logic signal;
a conductive pattern having a plurality of contact pads electrically coupled to ground; and
an electrically conductive sweeping contact electrically coupled to the input of the processing unit and to the voltage source via the pull-up resistor, the sweeping contact configured to rotate relative to the conductive pattern about a shared axis to move into contact and out of contact with the conductive pattern, wherein:
the sweeping contact is electrically grounded when the sweeping contact is contacting at least one contact pad of the plurality of contact pads such that current flows from the voltage source to ground through the pull-up resistor and no voltage is detected at the input of the processing unit; and
a voltage is detected at the input of the processing unit when the sweeping contact is not contacting at least one contact pad of the plurality of contact pads such that there is no current flow from the voltage source to ground through the pull-up resistor.